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CN107342432A - A kind of agricultural wastes fuel cell - Google Patents

A kind of agricultural wastes fuel cell Download PDF

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Publication number
CN107342432A
CN107342432A CN201710545908.4A CN201710545908A CN107342432A CN 107342432 A CN107342432 A CN 107342432A CN 201710545908 A CN201710545908 A CN 201710545908A CN 107342432 A CN107342432 A CN 107342432A
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China
Prior art keywords
agricultural wastes
fuel cell
anode
cathode
cell according
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郭桦
邓渝林
刘聪敏
徐冬
李雄威
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GUODIAN NEW ENERGY TECHNOLOGY INSTITUTE
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GUODIAN NEW ENERGY TECHNOLOGY INSTITUTE
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00Fuel cells; Manufacture thereof
    • H01M8/16Biochemical fuel cells, i.e. cells in which microorganisms function as catalysts
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30Hydrogen technology
    • Y02E60/50Fuel cells

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  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Biochemistry (AREA)
  • Microbiology (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Fuel Cell (AREA)

Abstract

The present invention relates to a kind of agricultural wastes fuel cell, it is characterised in that including anode-side component, anode circulation system, PEM, cathode side component and cathode circulation system;Wherein PEM is placed between cathode circulation system and anode circulation system, anode-side component is stored in anode circulation system, cathode side component is stored in cathode circulation system, both sides material is kept apart by PEM, anode-side component by anode circulation system by the electron transmission of carrying into external circuit, proton is pumped into cathode side component by PEM with by cathode circulation system, external circuit electronics combined generation water.Agricultural wastes fuel cell provided by the invention, the chemical energy of organic matter in agricultural wastes can be directly and efficiently converted into electric energy at low temperature, have the advantages of environmental protection and electric energy output power density are high, electrochemical efficiency is high concurrently.

Description

A kind of agricultural wastes fuel cell
Technical field
The invention belongs to direct liquid catalyst fuel cell field, and in particular to a kind of agricultural wastes fuel cell, Biomass energy in agricultural wastes is directly converted into electric energy under low temperature, environmental protection is had concurrently and electric energy output power density is high, electrochemical The advantages of learning efficiency high.
Background technology
Agricultural wastes are the organic species being dropped in agricultural production process, mainly contain cellulose, hemicellulose Element, lignin, soluble protein and sugar etc..China is large agricultural country, and agricultural wastes have huge recycling potentiality.With straw Exemplified by stalk, China can produce more than one hundred million tons of stalks, stalk resource very abundant every year.The recycling of agricultural crop straw, both may be used It to increase peasant income, can also reduce environmental pollution, effectively using renewable resource, circulate and pass through for China's rural development Ji, promote agricultural sustainable development significant.Again by taking the vinasse similar with stalk chemical composition as an example, China is every at present Year spirit stillage annual production is the maximum accessory substance of liquor industry more than 100,000,000 tons.Vinasse acidity is big, not easy to maintain, easily rotten It is rotten rotten and cause serious environmental pollution.How rational and efficient use vinasse, be to realize liquor industry recycling and can The key of sustainable development.
Agricultural wastes, which generate electricity, can not only realize the safe handling of agricultural wastes, while can also realize agriculture waste Thing recycling, it is the development trend that agricultural wastes rationally utilize.Fuel cell has energy conversion efficiency high and green The advantages of environmentally friendly, it is considered to be one has promising technology very much.Microbiological fuel cell using agricultural wastes as substrate Technology, it is possible to achieve agricultural wastes are degraded and generated electricity synchronously, and power output density is generally 0.004-0.025mW/cm2.So It is main including output power density is low, stability is poor, agricultural wastes degradation efficiency is low and the technology is there is also many deficiencies It is expensive etc. with electrode material catalyst.
The content of the invention
In order to solve the above-mentioned technical problem, the present invention provides a kind of agricultural wastes fuel cell, can be straight at low temperature Connect and agricultural wastes are converted into electric energy, have the advantages of environmental protection and electric energy output power density are high, electrochemical efficiency is high concurrently.This hair It is bright to adopt the following technical scheme that:
(1) a kind of agricultural wastes fuel cell, including anode-side component, anode circulation system, PEM, Cathode side component and cathode circulation system, described PEM be placed in cathode circulation system and anode circulation system it Between, anode-side component is stored in anode circulation system, and cathode side component is stored in cathode circulation system, both sides Material is kept apart by PEM, and anode-side component is by anode circulation system by the electron transmission of carrying to external electrical Lu Zhong, proton is pumped into cathode side component by PEM with by cathode circulation system, external circuit electronics is combined life Cheng Shui.
(2) the agricultural wastes fuel cell according to (1), the PEM have the first side and the second side, Anode electrode and solution are placed in the first side of PEM, and cathode electrode and solution are placed in the second side of PEM.
(3) the agricultural wastes fuel cell according to (1) or (2), the anode circulation system include anode liquid Circulating pump, filter, jointed anode battery lead plate and the anode manifolds in anode reaction pond.
(4) the agricultural wastes fuel cell according to any one of (1)-(3), the cathode circulation system include negative electrode Circulating pump, connection cathode electrode plate and the cathode manifold in cathode reaction pond.
(5) the agricultural wastes fuel cell according to any one of (1)-(4), the anode-side component include agriculture Industry discarded object, oxidant, water, accelerator, the intermediate product generated in agricultural wastes degradation process.
(6) the agricultural wastes fuel cell according to any one of (1)-(5), the fibre of the butt of the agricultural wastes In dimension element, hemicellulose and lignin the content of any one or the content of any two and/or three content sums exceed 30%.
Total content of organic carbon based on agricultural wastes butt after dehydration is more than 30%, based on agricultural wastes after dehydration Butt high pure nitrogen protection under with 10 DEG C/min heating rate linear temperature increase to 1000 DEG C, 200-400 DEG C heating pyrolysis The weight-loss ratio in section is more than 30%.
The agricultural wastes can be the organic species being dropped in the plantation, harvesting and process of manufacture of agricultural, Water content is between 0-90%.
(7) the agricultural wastes fuel cell according to any one of (1)-(6), the particulate matter of the agricultural wastes are straight Footpath is 15nm-100cm.
(8) the agricultural wastes fuel cell according to any one of (1)-(7), the agricultural wastes are needed by powder The preprocessing process of immersion, pickling and washing in broken, water, so as to remove the impurity such as silt, metal fillings, reduce content of ashes.
(9) the agricultural wastes fuel cell according to any one of (1)-(8), the mass concentration of the agricultural wastes For 0.5-70%, the agricultural wastes mass concentration is using agricultural wastes butt as standard.
(10) the agricultural wastes fuel cell according to any one of (1)-(9), the agricultural wastes and oxidant Between redox reaction by illumination, either heating or illumination and heating act on initiation simultaneously.
(11) the agricultural wastes fuel cell according to any one of (1)-(10), the illumination is sunshine or people Make light source or sunshine combines with artificial light.
(12) the agricultural wastes fuel cell according to any one of (1)-(11), the intensity of illumination scope is 1- 100mW/cm2
(13) the agricultural wastes fuel cell according to any one of (1)-(12), the wave-length coverage of the illumination are 10-750nm。
(14) the agricultural wastes fuel cell according to any one of (1)-(13), the temperature range of the heating are 25-350℃。
(15) the agricultural wastes fuel cell according to any one of (1)-(14), the oxidant are included with the next item down Or any two or two combination of the above:Phosphomolybdic acid (H3[PMo12O40]), phosphomolybdate, phosphotungstic acid (H3[PW12O40]), phosphorus tungsten Hydrochlorate, the phosphomolybdic acid (H of vanadium substitution5[PMo10V2O40]、H5[PMo9V3O40]), phosphomolybdate, the polyoxometallate of vanadium substitution Composition (H3[PW11MoO40])。
(16) the agricultural wastes fuel cell according to any one of (1)-(15), the shared anode of the oxidant are molten The mass fraction of liquid is 0.5-50%.
(17) the agricultural wastes fuel cell according to any one of (1)-(16), the accelerator are useless for enhancing agricultural Gurry and the composition of oxidant reaction degree, including with the next item down or the combination of any two or more than two:Lewis acid, Bronsted acid, lewis base.
(18) the agricultural wastes fuel cell according to any one of (1)-(17), the promoter concentration is 2ppm- 2%.
(19) the agricultural wastes fuel cell according to any one of (1)-(18), the cathode side component include Catalyst, water and oxidant.
(20) the agricultural wastes fuel cell according to any one of (1)-(19), the catalyst are included with the next item down Or the combination of any two or more than two:Phosphomolybdic acid (H3[PMo12O40]), phosphomolybdate, phosphotungstic acid (H3[PW12O40])、 Phosphotungstate, the phosphomolybdic acid (H of vanadium substitution5[PMo9V3O40], H12[P3Mo18V7O85]), vanadium substitution phosphomolybdate, multi-metal oxygen Composition (the H of hydrochlorate3[PW11MoO40])。
(21) the agricultural wastes fuel cell according to any one of (1)-(20), the mass fraction of the catalyst are 0.1-70%.
(22) the agricultural wastes fuel cell according to any one of (1)-(21), the oxidant are included with the next item down Or any two or two combination of the above:Oxygen, air, hydrogen peroxide, potassium permanganate..
(23) the agricultural wastes fuel cell according to any one of (1)-(22), anodic dissolution volume and cathode solution Volume ratio is 1:0.5~1:20.
(24) the agricultural wastes fuel cell according to any one of (1)-(23), power output density is 0.1- 200mW/cm2, electrochemical efficiency 10-40%.
The fuel cell that the technical program provides includes two reaction tanks, and the heteropoly acid that a reaction tank contains anode is urged Agent (POM-A) and agricultural wastes fuel, another reaction tank contain the heteropolyacid catalyst (POM-B) and oxygen of negative electrode. POM-A is reduced by agricultural wastes first in anode reactor, meanwhile, POM-B is reduced in negative electrode, and the POM-B being reduced can With by the oxidizing regeneration such as oxygen.In fact, POM-A and POM-B are used as catalyst rather than reactant, because two kinds More acid solutions can be reproduced completely, without any mass loss.Therefore, the net reaction of the fuel cell has related only to agricultural The organic composition and oxygen of discarded object.Specific course of reaction can be divided into four steps:
The first step, POM-A solution are reduced in anode by organic composition in agricultural wastes in a heated condition first, Electronics on organic matter is transferred to POM-A by organic matter;
Second step, reduction-state POM-A solution is set to be recycled on graphite electrode plate by circulating pump, now, on POM-A molecules Entrained electronics is delivered to external circuit by graphite electrode, is eventually transferred into the POM-B of negative electrode.At the same time, proton leads to Cross film and POM-B is transferred to by POM-A.By whole process, the chemical energy being stored in agricultural wastes organic matter is converted into electricity Can, externally acting.
3rd step, the POM-B of oxidation state receive external circuit electronics, are reduced to relative lower valency, and electrode potential reduces.
4th step, the POM-B of reduction-state is oxidizing by oxygen etc., loses electronics and chemical valence raises, so as to obtain Regeneration.At the same time, generation water is combined with oxonium ion through the proton of proton membrane.
Pass through above-mentioned technical proposal of the present invention provides a kind of agricultural wastes fuel cell, in the fuel cell, agriculture Industry discarded object is 25~350 DEG C first by heteropoly acid-A (POM-A) solution oxide, reaction temperature, and the POM being reduced will be obtained Electron transport to fuel cell anode.These electronics are by external circuit, finally by heteropoly acid-B (POM-B) institute of negative electrode Capture.In the fuel cell system, POM-B electrode potential is higher than the POM-A electrode potentials being reduced, than the electrode of oxygen Potential is low.Therefore, in the agricultural wastes fuel cell, the POM-A in reducing condition is as anode, and POM-B is as cloudy Pole.The POM-B solution of reducing condition in negative electrode can return to original state by oxygen re-oxidation.Because POM-A can lead to Cross and carried out by efficient degradation and carries a large amount of electronics for the organic matters such as the cellulose in agricultural wastes, hemicellulose and lignin, The electrode potential of anode is reduced, so as to increase the output voltage of external circuit and output current, thus the technology has output The advantages of power density is high, electrochemical efficiency is high.Involved low temperature direct fuel cell technology can be by agricultural in the present invention The chemical energy of organic matter is directly and efficiently converted into electric energy in discarded object, without causing any fine particulates to pollute.The technology It is anti-in galvanic anode and the organic matter generation redox in agricultural wastes by the use of heteropoly acid as oxidant and charge carrier Electronics and proton should be produced, electronics externally does work by external circuit, proton by after PEM cell cathode generate water, So as to realize in agricultural wastes biomass energy to the trans-utilization of electric energy.Because heteropoly acid can be by agricultural wastes The organic matter such as cellulose, hemicellulose and lignin carry out efficient degradation and carry a large amount of electronics, reduce the electrode of anode Potential, so as to increase the output voltage of external circuit and output current, thus the technology has output power density height, electrochemistry The advantages of efficiency high.Meanwhile agricultural wastes fuel cell technology can realize that the high-efficiency cleaning of agricultural wastes utilizes, and And it is catalyst and electric charge that different types of heteropoly acid, which is respectively adopted, in negative electrode due to the agricultural wastes fuel cell and anode Carrier, instead of the noble metal catalyst in original fuel cell, finally realize the agricultural wastes fuel that non precious metal is catalyzed Battery technology, it is a new fuel cell technology for taking into account high-performance and the great prospect of environmental benefit.
Brief description of the drawings
The present invention is further detailed explanation with reference to the accompanying drawings and detailed description.
Fig. 1 is the structural representation of the agricultural wastes fuel cell of the present invention.
12 be anode reaction pond in figure, and 1-1 is agricultural wastes, and 2 be filter, and 3 be anode manifolds, and 4 be anode liquid Circulating pump, 5 be anode electrode plate, and 6 be PEM, and 7 be cathode electrode plate, and 8 be cathode manifold, and 9 be cathode reaction pond, 10 For negative electrode liquid circulation pump.
Fig. 2 is voltage-current density and power-current densogram.Reaction condition is:Stalk (butt, 0.6g) and Phosphomolybdic acid (H3[PMo12O40], 30mL) the continuous heating 2h under 100 DEG C of pre-heating conditions, anodic dissolution and cathode solution volume ratio For:1:1.
Fig. 3 is voltage-current density and power-current densogram.Reaction condition is:Vinasse (butt, 0.6g) and Phosphomolybdic acid (H3[PMo12O40], 30mL) the continuous heating 2h under 100 DEG C of pre-heating conditions, anodic dissolution and cathode solution volume ratio For:1:1.
Fig. 4 is voltage-current density and power-current densogram.Reaction condition is:Stalk (butt, 0.6g) and Phosphomolybdic acid (H3[PMo12O40], 30mL, 0.3mol/L) under 80 DEG C of pre-heating conditions, respectively continuous heating 2h, 6h, 12h and 24h, anodic dissolution are with cathode solution volume ratio:1:1.
Fig. 5 is voltage-current density and power-current densogram.Reaction condition is:Stalk (butt, 0.6g) and Phosphomolybdic acid (H3[PMo12O40], 30mL, 0.3mol/L) under 100 DEG C of pre-heating conditions, respectively continuous heating 2h, 6h, 12h and 24h, anodic dissolution are with cathode solution volume ratio:1:1.
Fig. 6 is voltage-current density and power-current densogram.Reaction condition is:Stalk (butt, 0.6g) and Phosphomolybdic acid (H3[PMo12O40], 30mL, 0.3mol/L) under 150 DEG C of pre-heating conditions, respectively continuous heating 2h, 6h, 12h and 24h, anodic dissolution are with cathode solution volume ratio:1:1.
Fig. 7 is voltage-current density and power-current densogram.Reaction condition is:Vinasse (butt, 0.6g) and Phosphomolybdic acid (H3[PMo12O40], 30mL, 0.3mol/L) under 80 DEG C of pre-heating conditions, respectively continuous heating 2h, 6h, 12h and 24h, anodic dissolution are with cathode solution volume ratio:1:1.
Fig. 8 is voltage-current density and power-current densogram.Reaction condition is:Vinasse (butt, 0.6g) and Phosphomolybdic acid (H3[PMo12O40], 30mL, 0.3mol/L) under 100 DEG C of pre-heating conditions, respectively continuous heating 2h, 6h, 12h and 24h, anodic dissolution are with cathode solution volume ratio:1:1.
Fig. 9 is voltage-current density and power-current densogram.Reaction condition is:Vinasse (butt, 0.6g) and Phosphomolybdic acid (H3[PMo12O40], 30mL, 0.3mol/L) under 150 DEG C of pre-heating conditions, respectively continuous heating 2h, 6h, 12h and 24h, anodic dissolution are with cathode solution volume ratio:1:1.
Figure 10 is the fuel cell continuous discharge the performance test results figure under the conditions of constant current (100mA).Reaction condition For:Stalk (butt, 0.6g) and phosphomolybdic acid (H3[PMo12O40], 30mL, 0.3mol/L) persistently add under 100 DEG C of pre-heating conditions Hot 24h, anodic dissolution are with cathode solution volume ratio:1:1.
Figure 11 is the thermogravimetric curve of stalk and solid before and after phosphomolybdic acid reaction.
Figure 12 is the thermogravimetric curve of vinasse and solid before and after phosphomolybdic acid reaction.
Embodiment
The embodiment of the inventive method given below:
As shown in figure 1, a kind of agricultural wastes fuel cell, including anode-side component, anode circulation system, proton Exchange membrane 6, cathode side component, cathode circulation system, the PEM 6 are placed in cathode circulation system and anode circulation Between system, anode-side component is stored in anode circulation system, and cathode side component is stored in cathode circulation system Interior, both sides material is kept apart by PEM 6, and anode-side component is by anode circulation system by the electron transmission of carrying Into external circuit, proton is by PEM 6 with being pumped into cathode side component, external circuit electricity by cathode circulation system Son combines generation water.Wherein anode circulation system includes anode reaction pond 1, filter 2, anode liquid circulating pump 4, jointed anode The anode manifolds 3 in battery lead plate 5 and anode reaction pond 1, cathode circulation system include cathode reaction pond 9, negative electrode liquid circulation pump 10, Connect cathode electrode plate 7 and the cathode manifold 8 in cathode reaction pond 9.This fuel cell uses the two of different oxidation-reduction potentials Kind heteropoly acid solution:What is stored in anode reaction pond is a kind of heteropoly acid (being abbreviated as POM-A) solution and agricultural wastes, Oxidation reaction occurs for the organic substance under illumination or heating condition in agricultural wastes, and then the POM-A solution of reduction-state is in liquid In the presence of body circulation pump, enter by pipeline in anode graphite battery lead plate, the POM-A solution of reduction-state is by entrained electronics External circuit is transferred to, and initial state is returned to after releasing hydrogen ion in the solution, now the POM-A solution of oxidation state circulates again Return in anode reaction pond.The of a relatively high heteropoly acid solution (being abbreviated as POM-B) of another electrode potential is stored in negative electrode In reaction tank, the POM-B solution after dioxygen oxidation is pumped in negative electrode graphite electrode plate, with reaching negative electrode by external circuit Electronics and through PEM 6 hydrogen ion combine after, original state is returned to, into subsequent cycle, it is preferred that should PEM 6 is Nafion115 films.
The fuel of the agricultural wastes fuel cell of the present invention is agricultural wastes, and the agricultural wastes include but unlimited The organic species being dropped in agricultural planting, harvesting and process of manufacture.Preferably, the butt of the agricultural wastes is consolidated The content of cellulose of body more than 30%, or its dry basis hemicellulose level more than 30%, or its dry basis is wooden Cellulose content is more than 30%, or the cellulose of its dry basis and hemicellulose level sum be more than 30%, or its dry basis Cellulose and content of lignin sum are more than 30%, or the hemicellulose of its dry basis and content of lignin sum exceed 30%, or the cellulose of its dry basis, hemicellulose and content of lignin sum are more than 30%.The present invention uses heteropoly acid While efficient degradation being carried out to organic matters such as the cellulose in agricultural wastes, hemicellulose and lignin so that heteropoly acid A large amount of electronics are obtained, reduce the electrode potential of anode, increase the output voltage and output current of external circuit, thus are improved The output power density and electrochemical efficiency of battery.
Preferably, by crushing, in water, the preprocessing process of immersion, pickling and washing is handled the agricultural wastes, is removed The impurity such as silt, metal fillings are removed, and are used after reducing the content of ashes of agricultural wastes as fuel.Because ash content is including solvable Ash content and insoluble ash content, wherein, insoluble grey branch's obstruction battery inner cycle channel, battery performance is influenceed, need to be by cyclic system System filtering, and the electric energy that the circulatory system is consumed is very high in whole battery system generating energy consumption accounting;Solvable ash content is upon dissolution Metal cation can be formed, it can block PEM, reduce the Penetration ration of PEM, cause the drop of output current It is low, reduce cell output.And pass through the preprocessing process, performance of the fuel cell of the present invention to the circulatory system can be reduced Demand reduces, and reduces circulatory system energy consumption, moreover it is possible to lifts the permeability of the PEM of fuel cell of the present invention, lifts battery Power output, so as to reach reduction system cost, save energy consumption, increase battery electrification efficiency and power output effect.
Embodiment 1:
1. prepare anolyte (POM-A)
Take a certain amount of phosphomolybdic acid H3[PMo12O40], be configured to 0.05mol/L respectively, 0.1mol/L, 0.2mol/L and 0.3mol/L POM-A solution.
2. anolyte (POM-A) and agricultural wastes redox reaction
The POM-A solution 30mL for four kinds of various concentrations being configured to are taken respectively, (butt, are led with straw sample 0.6g successively Want the composition as shown in table 1) mixing, under phosphoric acid (85%, 0.45mL) environment, in 100 DEG C of continuous heatings 2 hours, terminates rear cold But insoluble matter is filtered.
3. prepare catholyte (POM-B)
Vanadium molybdic acid H12[P3Mo18V7O85] it is used as catholyte, solution concentration 0.3mol/L, the volume of cathode solution 30mL, anode and cathode solution volume ratio are 1:1.
4. direct low-quality agricultural wastes fuel cell assembling and method of testing
Agricultural wastes direct fuel cell system, including double electrode plate, graphite felt and PEM, the preferable electricity Pole plate is highdensity graphite electrode plate.There is a runner on double electrode plate, effective geometric projection area is 1cm2.Graphite felt Need by pre-processing, pretreatment condition is:It is 3 that graphite felt is immersed into volume ratio first:1 concentrated sulfuric acid and concentrated nitric acid mixture In, heat 30 minutes at 50 DEG C, then rinsed well with deionized water.The graphite felt of pre- modified is filled into double electrode plate In serpentine flow path, PEM is placed between double electrode plate.Two panels acrylic plastics plate as end plate by double electrode plate and Polytetrafluoro pad fixes, and is leaked to prevent electrolyte.Circulating pump and monocell are connected using polytetrafluoro pipe, so as to realize Electrolyte outer loop.
5.POM-B regenerative responses
The H of reduction-state12[P3Mo18V7O85] solution oxygen mix container (glass container a diameter of 1.5cm, long 20cm, it is interior Filling carbon fiber) in, realize and regenerate with oxygen reaction.The H of reduction-state12[P3Mo18V7O85] solution with 30mL/min flow velocitys enter In to air and liquid mixer and oxygen mix.Oxygen is supplied by steel cylinder device, flow velocity 12mL/min, pressure 1atm.Gas-liquid mixed The temperature of device is 80 DEG C.
6. direct agricultural wastes fuel cell continuous discharge test under low temperature
By the H of reduction-state3[PMo12O40] solution is put into anode reactor, fuel cell is then delivered to by circulating pump Positive plate carry out discharge test.Equally by H12[P3Mo18V7O85] solution is placed in cathode reactor, it is then defeated by circulating pump Deliver to the minus plate of fuel cell.The temperature of two reactors is kept at 80 DEG C, and flow velocity is respectively 30mL/min, and liquid enters Need by 0.2 μm of filter, to prevent the solid impurity blocking pipeline that can not be dissolved in agricultural wastes before anode plate runner.This The electrochemical property test data of embodiment are as shown in Figure 2.
The main component of the wheat stalk sample of table 1
Embodiment 2:
The fuel battery anode catalyst, cathod catalyst, fuel cell system of the present embodiment, and agricultural wastes with The pre-warmed treatment temperature of anode catalyst and mode are same as Example 1, and only agricultural wastes are different.In the present embodiment, agriculture Industry discarded object uses vinasse sample 0.6g (butt, main component are as shown in table 2).The electrochemical property test data of the present embodiment As shown in Figure 3.
The main component of the vinasse sample of table 2
Embodiment 3:
The fuel battery anode catalyst and cathod catalyst and fuel cell system of the present embodiment and the phase of embodiment 1 Together, and stalk treatment temperature pre-warmed from anode catalyst and heat time are different.In the present embodiment, stalk with it is anode-catalyzed The lasting pre-heating temperature of agent is respectively 80 DEG C, 100 DEG C and 150 DEG C, and the heat time is respectively 2h, 6h, 12h and 24h.This implementation The electrochemical property test data of example are as shown in figures 4-6.
Embodiment 4:
The fuel battery anode catalyst and cathod catalyst and fuel cell system of the present embodiment and the phase of embodiment 3 Together, and agricultural wastes treatment temperature pre-warmed with anode catalyst and mode it is same as Example 3, only agricultural wastes It is different.In the present embodiment, agricultural wastes use vinasse sample 0.6g (butt).The electrochemical property test data of the present embodiment As shown in figs. 7-9.
Interpretation of result
Fig. 2 and Fig. 3 be 30mL various concentrations POM-A solution respectively with 0.6g straw sample and 0.6g vinasse sample Mixing, the chemical property change curve under 100 DEG C of pre-heating conditions after continuous heating 2h.As can be seen that working as wine from figure Grain and the amount of stalk are constant, and with the raising of POM-A concentration, maximum power density gradually increases.For straw sample, when When concentration is 0.05mol/L, maximum power density 43mW/cm2, as the 0.3mol/L that concentration improves, maximum power density Reach 64mW/cm2
Fig. 4-Fig. 6 is electrification of the phosphomolybdic acid with stalk with the reaction time under 80 DEG C, 100 DEG C and 150 DEG C three different temperatures Learn performance change curve.From figure as can be seen that at 80 DEG C, the maximum power density of 2h heating is 40mW/cm2;With adding Hot time lengthening, power density significantly improve;It can reach 79mW/cm to maximum power density during 24h2.This explanation biomass In organic matter be gradually dissolved into POM-A solution, oxidation reaction occurs with POM-A molecules, electronics is transferred to from organic matter On POM-A molecules, POM-A reducing degree gradually steps up as time went on.At 100 DEG C, heated by 2h, stalk fuel The power density of battery is up to 63mW/cm2;It is similar with the experimental result under the conditions of 80 DEG C, with extending heating time, power Density significantly improves;When heating extends to 24h, power density 88mW/cm2.When temperature brings up to 150 DEG C, 2h is heated Its maximum power density has reached 80mW/cm2;As the reaction time extends, power density shows when being not as 80 DEG C and 100 DEG C Writing increases, and 6h, 12h and 24h power density difference are smaller, are 104mW/cm respectively2, 108mW/cm2And 114mW/cm2.This says It is bright at relatively high temperatures, organic matter and POM-A reaction rates are very fast, and can reaches higher reduction in a short period of time Degree.Reaction time, which further extends, can not further improve reduction degree, and this is due to that organic matter is most of sends out with POM-A Biochemical reaction, or POM-A reduction degrees have progressively reached saturation.
Fig. 7-Fig. 9 is electrification of the phosphomolybdic acid with vinasse with the reaction time under 80 DEG C, 100 DEG C and 150 DEG C three different temperatures Learn performance change curve.As can be seen that at 80 DEG C from figure, the maximum power density of 2h heating is 31mW/cm2;With heating Time lengthening, power density significantly improve;It can reach 65mW/cm to maximum power density during 24h2.At 100 DEG C, pass through 2h is heated, and the power density of vinasse fuel cell is up to 75mW/cm2;When heating extends to 24h, power density 99mW/cm2。 When temperature brings up to 150 DEG C, its maximum power density of heating 2h has reached 97mW/cm2, 6h, 12h and 24h power is close It is smaller to spend difference, is 107mW/cm respectively2, 111mW/cm2And 111mW/cm2.At 80 DEG C, compared with stalk, under the same terms The power density of vinasse is slightly below the power density of stalk;And when temperature brings up to 150 DEG C, the power of stalk and vinasse is basic Identical, this is due to that the content of cellulose and lignin is higher, it is necessary to could degrade at a higher temperature in vinasse.Therefore, The power density of stalk is high under cryogenic conditions, and both power densities are essentially identical after reaction temperature improves.
Figure 10 is the fuel cell continuous discharge performance curve under the conditions of constant current (100mA).Terminate in every wheel electric discharge Afterwards, new stalk and the POM-A solution reactions of recycling are added, obtains stable performance.From figure as can be seen that all five In individual discharge cycles, power density curve is similar, and initial power density is 48mW/cm2, 10 one-hour rating density are 20mW/cm2, after with the addition of fresh stalk, power density 44W/cm2, equally continue 10h or so, power density reduces again To 20mW/cm2, all discharge processes take around 40 hours.This shows that POM-A has excellent stability in the art, And, can be with continuous discharge with stalk continuous consumption.
Figure 11 is under the protection of high pure nitrogen, by wheat stalk with 10 DEG C/min heating rate linear temperature increase to 1000 ℃.It can be seen that the pyrolytic process of wheat stalk can be divided into three phases:First stage makes a living the substance dehydrates stage, The weightlessness in this stage is mainly as caused by the Free water in material and the loss of chemical bonding water;Second stage is respectively in 185- 400 DEG C, mainly a large amount of decomposition of starch, cellulose and hemicellulose, the softening and decomposition of lignin, charcoal and volatile materials Generation.For in general biomass, hemicellulose is least stable, easily degraded, and its degradation temperature is 150-350 DEG C, The main pyrolysis zone of cellulose occurs between 275-350 DEG C, and carbon amounts is less after pyrolysis, pyrolysis rate quickly, and lignin It is most difficult to degrade, occurs mainly in 250-400 DEG C, its degraded starts relatively morning but the duration is longer, almost crosses over and was entirely pyrolyzed Journey.Cellulose, hemicellulose mainly generate volatile matter after decomposing, charcoal is mainly generated after lignin pyrolysis.The stage loses to be main Weight stage, the weight-loss ratio of wheat stalk reach 60% or so;Phase III be in carbonization process and stalk a small amount of lignin after Continuous degradation period, deep layer volatile matter outer layers slowly spread, and the duration is longer, and residue is ash content and porous fixed carbon. In this stage, sample weight loss 10%.Reacted wheat stalk weight-loss curve is without obvious violent zero-g period, total mistake Rate is 58% again, the weight-loss ratio of relative raw material wheat stalk 90%, illustrates that most organic substance is oxidized and is transferred to POM-A In solution.
Figure 12 is under the protection of high pure nitrogen, by vinasse with 10 DEG C/min heating rate linear temperature increase to 1000 DEG C. It can be seen that the Main Stage of vinasse thermal decomposition is 230-400 DEG C, most of weightlessness of sample occurs in the region, Weight-loss ratio reaches more than 60wt.%, mainly cellulose and hemicellulose thermal cracking processes, contrasts the data of wheat stalk, can To find that vinasse and the main weightless region of stalk and weight-loss ratio essentially coincide, include the slow weightlessness in 400 DEG C of -1000 DEG C of stages Stage is also substantially similar, but the zero-g period in beginning is slightly different, and vinasse do not have constant temperature rank between 150-230 DEG C Section, but slowly decline, from room temperature to 230 DEG C, weight-loss ratio is about 20wt.%.This is due to containing abundant fermentation in vinasse Accessory substance (such as glycerine, organic acid, amino acid, macromolecule sugar small-molecule substance, in the just gradually volatilization of heating starting stage.Instead Vinasse weight-loss curve no obvious violent zero-g period after answering, total weight-loss ratio is 62%, and most of organic matter is initial Stage is all transferred into POM-A solution.
Above-described embodiment is not the exhaustion of embodiment, can also there is other embodiments, and above-described embodiment purpose exists In the explanation present invention, the protection domain being not intended to limit the present invention, all applications come by simple change of the present invention are all fallen within In the protection domain of invention.
This patent specification goes the displaying present invention using example, including optimal mode, and makes to be familiar with this area Technical staff manufactures and used the present invention.This, which invents delegatable scope, is included in the content and specification of claims The content of embodiment and other embodiments.These other examples should also belong to the scope of claims of the present invention, As long as they contain the technical characteristic described by the identical written language of claim, or they include with claim without reality Technical characteristic described by the similar literal language of matter difference.
The full content of all patents, patent application and other bibliography should be incorporated by reference into present specification.But Be if a term in the application mutually conflicts with the term for having included bibliography, it is preferential with the term of the application.
All scopes disclosed herein all include end points, and are to combine independently of one another between end points.
It should be noted that " first ", " second " or similar vocabulary are not offered as any order, quality or importance, It is used only to distinguish different technical characteristics.The qualifier " about " that combined amount uses includes described value and content context refers to Fixed implication (such as:It includes error during measurement specific quantity).

Claims (16)

1. a kind of agricultural wastes fuel cell, it is characterised in that including anode-side component, anode circulation system, proton Exchange membrane, cathode side component and cathode circulation system, anode-side component are stored in anode circulation system, cathode side Component is stored in cathode circulation system, the PEM be placed in cathode circulation system and anode circulation system it Between, the PEM has the first side and the second side, and anode electrode and anodic dissolution are placed in the first side of PEM, cloudy Pole electrode and cathode solution are placed in the second side of PEM.
2. agricultural wastes fuel cell according to claim 1, it is characterised in that the anode circulation system includes sun Pole liquid circulation pump, filter, jointed anode electrode and the anode manifolds in anode reaction pond, the cathode circulation system include the moon Pole liquid circulation pump, connection cathode electrode and the cathode manifold in cathode reaction pond.
3. agricultural wastes fuel cell according to claim 1, it is characterised in that the anode-side component includes Agricultural wastes, oxidant, water, accelerator, the intermediate product generated in agricultural wastes degradation process.
4. agricultural wastes fuel cell according to claim 3, it is characterised in that the butt of the agricultural wastes In cellulose, hemicellulose or lignin the content of any one or the content of any two and/or three content sums exceed 30%.
5. agricultural wastes fuel cell according to claim 3, it is characterised in that the butt of the agricultural wastes Total content of organic carbon is more than 30%, and agricultural wastes butt is linear with 10 DEG C/min heating rate under high pure nitrogen protection 1000 DEG C are warming up to, is more than 30% in the weight-loss ratio that 200-400 DEG C is pyrolyzed section.
6. agricultural wastes fuel cell according to claim 3, it is characterised in that the particulate matter of the agricultural wastes A diameter of 15nm-100cm.
7. agricultural wastes fuel cell according to claim 3, it is characterised in that the agricultural wastes need by The preprocessing process of immersion, pickling and washing in crushing, water, to remove the impurity such as silt, metal fillings, reduce content of ashes.
8. agricultural wastes fuel cell according to claim 3, it is characterised in that the quality of the agricultural wastes is dense Spend for 0.5-70%, the mass concentration of the agricultural wastes is using agricultural wastes butt as standard.
9. agricultural wastes fuel cell according to claim 3, it is characterised in that the agricultural wastes and oxidant Between redox reaction by illumination, either heating or illumination and heating act on initiation simultaneously.
10. agricultural wastes fuel cell according to claim 7, it is characterised in that the temperature range of the heating is 25-350℃。
11. agricultural wastes fuel cell according to claim 3, it is characterised in that the oxidant is included with next Item or any two or two combination of the above:Phosphomolybdic acid (H3[PMo12O40]), phosphomolybdate, phosphotungstic acid (H3[PW12O40]), phosphorus Tungstates, the phosphomolybdic acid (H of vanadium substitution5[PMo10V2O40]、H5[PMo9V3O40]), vanadium substitution phosphomolybdate, polyoxometallate Composition (H3[PW11MoO40])。
12. agricultural wastes fuel cell according to claim 3, it is characterised in that the accelerator is enhancing agricultural Discarded object and the composition of oxidant reaction degree, including with the next item down or the combination of any two or more than two:Louis Acid, Bronsted acid, lewis base.
13. agricultural wastes fuel cell according to claim 1, it is characterised in that the cathode side component bag Include catalyst, water and oxidant.
14. agricultural wastes fuel cell according to claim 11, the catalyst is included with the next item down or any two Item or two combination of the above:Phosphomolybdic acid (H3[PMo12O40]), phosphomolybdate, phosphotungstic acid (H3[PW12O40]), phosphotungstate, vanadium take Phosphomolybdic acid (the H in generation5[PMo9V3O40], H12[P3Mo18V7O85]), vanadium substitution phosphomolybdate, the composition of polyoxometallate (H3[PW11MoO40])。
15. agricultural wastes fuel cell according to claim 11, the oxidant is included with the next item down or any two Item or two combination of the above:Oxygen, air, hydrogen peroxide, potassium permanganate.
16. agricultural wastes fuel cell according to claim 3, it is characterised in that power output density is 0.1- 200mW/cm2, electrochemical efficiency 10-40%.
CN201710545908.4A 2017-07-06 2017-07-06 A kind of agricultural wastes fuel cell Pending CN107342432A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108676818A (en) * 2018-05-18 2018-10-19 清华大学深圳研究生院 A kind of method of the organic waste rapid conversion energy
CN110592607A (en) * 2019-08-09 2019-12-20 国电新能源技术研究院有限公司 System for coupling organic matter direct fuel cell and electrolytic hydrogen production

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105958094A (en) * 2016-05-30 2016-09-21 国电新能源技术研究院 Low-grade coal fuel cell
CN105977514A (en) * 2016-05-30 2016-09-28 国电新能源技术研究院 Sludge fuel cell

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105958094A (en) * 2016-05-30 2016-09-21 国电新能源技术研究院 Low-grade coal fuel cell
CN105977514A (en) * 2016-05-30 2016-09-28 国电新能源技术研究院 Sludge fuel cell

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
XUEBING ZHAO等: ""Low-temperature microbial and direct conversion of lignocellulosic biomass to electricity:Advances and challenges"", 《RENEWABLE AND SUSTAINABLE ENERGY REVIEWS》 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108676818A (en) * 2018-05-18 2018-10-19 清华大学深圳研究生院 A kind of method of the organic waste rapid conversion energy
CN108676818B (en) * 2018-05-18 2021-06-01 清华大学深圳研究生院 Method for quickly converting organic waste into energy
US11535542B2 (en) 2018-05-18 2022-12-27 Tsinghua Shenzhen International Graduate School Method for quickly converting organic waste into energy
CN110592607A (en) * 2019-08-09 2019-12-20 国电新能源技术研究院有限公司 System for coupling organic matter direct fuel cell and electrolytic hydrogen production

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