CN110233236A - A kind of battery with ion homeostasis electrode - Google Patents
A kind of battery with ion homeostasis electrode Download PDFInfo
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- CN110233236A CN110233236A CN201810183718.7A CN201810183718A CN110233236A CN 110233236 A CN110233236 A CN 110233236A CN 201810183718 A CN201810183718 A CN 201810183718A CN 110233236 A CN110233236 A CN 110233236A
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- ion homeostasis
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- 230000019948 ion homeostasis Effects 0.000 title claims abstract description 69
- 150000002500 ions Chemical class 0.000 claims abstract description 42
- 238000000034 method Methods 0.000 claims abstract description 11
- 230000008569 process Effects 0.000 claims abstract description 9
- 238000010521 absorption reaction Methods 0.000 claims abstract description 3
- 230000002441 reversible effect Effects 0.000 claims abstract description 3
- 229910052744 lithium Inorganic materials 0.000 claims description 18
- 229910052751 metal Inorganic materials 0.000 claims description 17
- 239000002184 metal Substances 0.000 claims description 17
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 16
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 4
- 230000005012 migration Effects 0.000 claims description 4
- 238000013508 migration Methods 0.000 claims description 4
- 230000008859 change Effects 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 claims description 2
- NPYPAHLBTDXSSS-UHFFFAOYSA-N Potassium ion Chemical compound [K+] NPYPAHLBTDXSSS-UHFFFAOYSA-N 0.000 claims description 2
- FKNQFGJONOIPTF-UHFFFAOYSA-N Sodium cation Chemical compound [Na+] FKNQFGJONOIPTF-UHFFFAOYSA-N 0.000 claims description 2
- PTFCDOFLOPIGGS-UHFFFAOYSA-N Zinc dication Chemical compound [Zn+2] PTFCDOFLOPIGGS-UHFFFAOYSA-N 0.000 claims description 2
- REDXJYDRNCIFBQ-UHFFFAOYSA-N aluminium(3+) Chemical compound [Al+3] REDXJYDRNCIFBQ-UHFFFAOYSA-N 0.000 claims description 2
- -1 iron ion Chemical class 0.000 claims description 2
- 229910001425 magnesium ion Inorganic materials 0.000 claims description 2
- 229910001414 potassium ion Inorganic materials 0.000 claims description 2
- 229910001415 sodium ion Inorganic materials 0.000 claims description 2
- 238000005303 weighing Methods 0.000 claims description 2
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 claims 1
- 229910001424 calcium ion Inorganic materials 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 5
- 230000007704 transition Effects 0.000 abstract description 2
- 239000003792 electrolyte Substances 0.000 description 20
- 239000000463 material Substances 0.000 description 14
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical group [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 12
- 229910001416 lithium ion Inorganic materials 0.000 description 12
- 230000013632 homeostatic process Effects 0.000 description 6
- 229910021645 metal ion Inorganic materials 0.000 description 6
- 230000005611 electricity Effects 0.000 description 5
- 229910003002 lithium salt Inorganic materials 0.000 description 5
- 159000000002 lithium salts Chemical class 0.000 description 5
- 210000004027 cell Anatomy 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 210000001787 dendrite Anatomy 0.000 description 4
- IIPYXGDZVMZOAP-UHFFFAOYSA-N lithium nitrate Chemical compound [Li+].[O-][N+]([O-])=O IIPYXGDZVMZOAP-UHFFFAOYSA-N 0.000 description 4
- 239000002904 solvent Substances 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- JDZCKJOXGCMJGS-UHFFFAOYSA-N [Li].[S] Chemical compound [Li].[S] JDZCKJOXGCMJGS-UHFFFAOYSA-N 0.000 description 3
- 239000000654 additive Substances 0.000 description 3
- 230000000996 additive effect Effects 0.000 description 3
- 239000010406 cathode material Substances 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 238000003487 electrochemical reaction Methods 0.000 description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- 229910001290 LiPF6 Inorganic materials 0.000 description 2
- 229910001228 Li[Ni1/3Co1/3Mn1/3]O2 (NCM 111) Inorganic materials 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 239000010405 anode material Substances 0.000 description 2
- 229910021383 artificial graphite Inorganic materials 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 239000003575 carbonaceous material Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 239000011889 copper foil Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- YQCIWBXEVYWRCW-UHFFFAOYSA-N methane;sulfane Chemical compound C.S YQCIWBXEVYWRCW-UHFFFAOYSA-N 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910021384 soft carbon Inorganic materials 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 229910010707 LiFePO 4 Inorganic materials 0.000 description 1
- 229910002097 Lithium manganese(III,IV) oxide Inorganic materials 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 239000011149 active material Substances 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000006183 anode active material Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- CPSYWNLKRDURMG-UHFFFAOYSA-L hydron;manganese(2+);phosphate Chemical compound [Mn+2].OP([O-])([O-])=O CPSYWNLKRDURMG-UHFFFAOYSA-L 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000013067 intermediate product Substances 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 229910052987 metal hydride Inorganic materials 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 229910001453 nickel ion Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000011848 phosphorous-based material Substances 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 125000004646 sulfenyl group Chemical group S(*)* 0.000 description 1
- 239000011366 tin-based material Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/054—Accumulators with insertion or intercalation of metals other than lithium, e.g. with magnesium or aluminium
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
-
- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Secondary Cells (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The present invention relates to a kind of batteries with ion homeostasis electrode, it is characterised in that: battery possesses the electrode of ion homeostasis, which can be with reversible absorption/release ion.It is controlled by external circuit, in charge and discharge process, the total ion concentration in ion homeostasis electrode is basically unchanged, or is only changed in smaller range.From macroscopically, amount of ions variation occurs in anode and cathode, and ion homeostasis electrode only plays ionic transition effect, to battery capacity without contribution, but ion homeostasis electrode has widened the concept of conventional batteries, can solve the insurmountable Important Problems of current arrangements, is of great significance.The invention belongs to new principle battery, with high capacity, high safety performance, high reliability characteristic, can be mass-produced application.
Description
Technical field
The present invention relates to the battery with ion homeostasis electrode, especially charge-discharge principle be different from conventional lithium from
High capacity, high safety performance, the high reliability battery of sub- battery.
Background technique
With the development of society, the universal development with New Energy Industry of the progress of the mankind, especially modern electronic product,
Increasingly higher demands are proposed to packaged type secondary power supply.Currently, most widely used secondary power supply is lithium ion battery,
It is born from nineteen ninety and comes into human lives so far nearly 30 years, takes many conveniences to human lives.Lithium ion battery is born
Before, the mankind have invented multiple battery, including dry cell, alkaline battery, lead-acid battery, nickel-metal hydride battery etc..These electricity
The universal principle in pond is, anode and cathode forms different oxidation state/reduction-states respectively by chemically reacting with electrolyte, with
This storage electric energy.In charge and discharge process, electrolyte reacts simultaneously with anode and cathode, electrolyte in Charging state and electric discharge state
Certain variation has occurred in ingredient.Since electrolyte participates in the electrochemical reaction of anode and cathode, the dosage of electrolyte can be largely
The degree that upper limitation electrochemical reaction occurs, therefore, the energy density of battery is difficult to significantly be promoted.
Lithium ion battery is referred to as " rocking chair type battery ", this is because in charge and discharge process, lithium ion directly shuttle in
Between anode and cathode, electrolyte is only used as the medium of lithium ion mobility, is not involved in electrochemical reaction, the electrolyte before and after charge and discharge
Quality and lithium salt do not have significant change.The energy density of battery is mainly by the capacity limit of anode and cathode, with electrolyte dosage
Relationship it is unobvious, while the capacity of anode and cathode is higher, therefore the energy density of battery can greatly promote.But due to
The capacity of " rocking chair type battery " anode and cathode material gradually performs to ultimate attainment, and the energy density of battery, which has been difficult to have, significantly to be promoted
Space, need the limitation that new battery system breaks through energy density bottleneck.
The system that current people most pay close attention to is lithium an- ode battery, compared to conventional lithium ion battery, lithium an- ode
The advantage that relative potentials are low, gram volume is high is one of best metal of battery system.Using lithium anode, energy density is extremely
Can achieve the 2 times or more of present level less, wherein lithium-sulfur cell is considered as next-generation battery system after lithium ion battery,
It is high with energy density, cheap and be concerned.The energy density of current lithium ion battery has reached 250wh/kg, uses
After new anode and cathode material system, energy density can achieve 300wh/kg, not exceed 350wh/kg at most, and lithium-sulfur cell
Energy density can be more than 400wh/kg or even 500wh/kg, this will greatly increase the practicability of battery, improves in all its bearings
People's lives.But due to the characteristic of lithium metal, will form Li dendrite before and after charge and discharge, there are serious security risks.
Although people have studied decades, effective scheme there is no to solve the problems, such as cathode Li dendrite at present.Therefore, it is conceived to current
Battery technology and research achievement develop a high safety performance with practical value, high-capacity battery, to promotion social progress
Development is of great significance.
Summary of the invention
The present invention is directed to the working principle of lithium ion battery, proposes a kind of battery with ion homeostasis electrode,
It is expected to further promote the energy density and security performance of battery.
To achieve the purpose of the present invention, the technical scheme is that a electricity with ion homeostasis electrode of exploitation
Pond.
The above-mentioned battery with ion homeostasis electrode includes at least metal anode, ion homeostasis electricity in battery
Pole and cathode are separated with diaphragm between each electrode.
The above-mentioned battery with ion homeostasis electrode, anode active material be lithium metal, sodium, potassium, magnesium, calcium, aluminium,
The compound of one of zinc, iron or a variety of or above-mentioned metal and other materials.
The above-mentioned battery with ion homeostasis electrode, ion be lithium ion, sodium ion, potassium ion, magnesium ion, calcium from
One of son, aluminium ion, zinc ion, iron ion are a variety of.
The above-mentioned battery with ion homeostasis electrode, ion homeostasis electrode can with reversible absorption/release ion,
And ion can pass through ion homeostasis electrode.
The above-mentioned battery with ion homeostasis electrode, ion homeostasis electrode are passed through using permission metal ion
Electrically conductive collector, comprising in metal mesh, multicellular metal foil, foam metal foil, carbon-base film material, porous, electrically conductive polymeric membrane
It is one or more.
The above-mentioned battery with ion homeostasis electrode, ion homeostasis electrode material use metal ion activity material
Material, active electrode can be absorbed metal ion, while can also include carbon materials with release metal ions, metal ion activity material
One of material, silica-base material, tin-based material, phosphorous-based materials, lithium titanate sill, metal oxide materials a variety of are answered
It closes.
The above-mentioned battery with ion homeostasis electrode, cathode material is using LiFePO 4, lithium ferric manganese phosphate, cobalt acid
Lithium, LiMn2O4, nickel ion doped, binary material, ternary material, rich lithium material, sulfenyl material are (using sulphur as the composite wood of active material
Material or compound) one of or it is a variety of.
The above-mentioned battery with ion homeostasis electrode, ion homeostasis electrode is absorbable/release metal ions most
Largely≤battery intermediate ion migration total amount 50%, the 50% of capacity≤cathode of ion homeostasis electrode or anode capacity.
The above-mentioned battery with ion homeostasis electrode, during the charging process, ion migrate dynamic to ion from cathode
State counter electrode, ion are migrated from ion homeostasis electrode to anode；During discharge, ion from anode migrate to from
Sub- dynamic equilibrium electrode, ion are migrated from ion dynamic electrode to cathode
The above-mentioned battery with ion homeostasis electrode, in charge and discharge process, ion homeostasis electrode intermediate ion total amount
Change rate≤50%；Or before and after charge and discharge, ion homeostasis electrode intermediate ion total amount variation≤battery intermediate ion migrates total amount
50%.
The above-mentioned battery with ion homeostasis electrode, using one or more electronic circuit control ion homeostasis
The total amount of electrode intermediate ion.
The above-mentioned battery with ion homeostasis electrode, load connects between cathode-ion homeostasis electrode or yin
Between pole-anode, control circuit is connect between ion homeostasis electrode-anode, and it is flat that control circuit controls anode-ion dynamic
The migration velocity and total amount of ion, make the migration velocity of its ion between ion homeostasis electrode-cathode between weighing apparatus electrode
It is substantially suitable with total amount.
The above-mentioned battery with ion homeostasis electrode, circuit is using the control such as constant voltage circuit, constant-current circuit, hybrid circuit
Mode processed, control discharge process in from anode to the amount of ions of ion homeostasis electrode with from ion homeostasis electrode to
The amount of ions of cathode is substantially suitable, and in charging process from cathode to the amount of ions of ion homeostasis electrode with from ion
The amount of ions of dynamic equilibrium electrode to anode is substantially suitable, for being guaranteed from total amount with this, in ion homeostasis electrode
Total ion concentration is basically unchanged.From macroscopically, amount of ions variation occurs in anode and cathode, and ion homeostasis electrode only plays
Ionic transition effect.
Ion homeostasis electrode contributes very little to the performance of battery capacity, or even can reduce battery to a certain extent
Energy density, but play a significant role: 1. metallic dendrites, which pierce through internal short-circuit caused by diaphragm, can only cause anode-ion dynamic
Short circuit between state counter electrode, but ion homeostasis electrode potential is low, capacity is low, and short circuit releases energy smaller, Bu Huizao
At serious safeties accidents such as on fire, explosions, the security performance of battery is greatly promoted；2. external circuit passes through metal dynamic equilibrium electrode
Metallic dendrite can be detected and pierce through internal short-circuit caused by diaphragm, provide early warning for disposition risk；3. because ion dynamic electrode exists
It is obstructed between anode and cathode, during a large amount of ions freely can not move to cathode, battery production and use by anode in a short time
Security risk substantially reduces, and is less prone to the accidents such as short-circuit fire burning；4. soluble for the charge and discharge of certain materials intermediate
Shuttle effect caused by product, and ion homeostasis electrode can effectively stop the shuttle of intermediate product, improves the charge and discharge of battery
Electrical efficiency and cycle life reduce self-discharge of battery, and the practicability for improving next-generation high-capacity battery plays a significant role.
Compared with existing lithium ion battery, there are apparent difference, ion exists the working principle and working method of this battery
It shuttles between cathode-ion homeostasis electrode-anode three, but the charge and discharge that can be achieved on battery and battery are to load
Driving.Using the battery of the principle, the characteristic with high capacity, high safety performance and high reliability is expected to solve current
The insurmountable problem of battery system provides solution for next generation's energy technology.
Specific embodiment
The present invention is described in further details below in conjunction with specific example.It should be pointed out that specific implementation described herein
Example for explaining only the invention, is not intended to limit the present invention.
Embodiment 1:
Anode uses NCM111, and cathode uses metal lithium sheet, and ion homeostasis electrode uses artificial graphite, and mineral carbon load is more
On the copper foil of hole, ion homeostasis electrode with a thickness of 30 μm, separated between three electrodes using 12 μm of diaphragms, using lithium piece-
Diaphragm-ion homeostasis electrode-membrane-anode sequence is assembled into battery, and electrolyte, electrolyte LiPF6(1.2 is added
Mol/L) it is lithium salts, VC, PS are additive (2.0 wt.%), and solvent is EC:EMC:DMC(vol 20:10:70), it is assembled into electricity
Pond.Three electrodes draw three conducting wires respectively.After battery assembly is completed, shelves for 24 hours, infiltrate electrolyte sufficiently, then carry out
Following charge and discharge steps.
1, ion homeostasis electrode-metal negative electrode electric current is controlled, low current is melted into 0.3V, makes target graphite table
Face forms stable SEI film；
2, continue that ion homeostasis electrode-metal negative electrode circuit is allowed to discharge, current potential is made to be down to 0.06V, stop electric discharge.
3, control ion homeostasis electrode-metal electrode be pressure constant state, anode-ion homeostasis electrode with
0.5C-0.5C condition circulation, and record battery capacity, battery efficiency and cycle life.
Embodiment 2:
Anode uses porous carbon sulfur loaded, and cathode uses metal lithium sheet, and ion homeostasis electrode uses soft carbon material, and soft carbon is negative
Be loaded on 300 mesh copper mesh, target with a thickness of 30 μm, separated between three electrodes using 16 μm of diaphragms, using lithium piece-every
Film-ion homeostasis electrode-membrane-anode sequence is assembled into battery, electrolyte is added, electrolyte is that LITFSI is lithium
Salt, the LiNO3 of 0.4mol/L are additive, and solvent is DOL+DME(vol 1:1), it is assembled into battery.Three electrodes are drawn respectively
Three conducting wires.After battery assembly is completed, shelves for 24 hours, infiltrate electrolyte sufficiently, then carry out following charge and discharge steps.
1, ion homeostasis electrode-metal negative electrode electric current is controlled, makes target-metal negative electrode circuit electric discharge, makes electricity
Potential drop stops electric discharge to 0.06V.
2, control ion homeostasis electrode-metal electrode be pressure constant state, anode-ion homeostasis electrode with
0.5C-0.5C condition circulation, and record battery capacity, battery efficiency and cycle life.
Comparative example 1:
Anode uses NCM111, and cathode uses artificial graphite, and mineral carbon load is on copper foil, using 12 μm of diaphragms, using graphite-every
Film-anode sequence is assembled into battery, electrolyte is added, electrolyte is LiPF6(1.2 mol/L) it is lithium salts, VC, PS are addition
Agent (2.0 wt.%), solvent are EC:EMC:DMC(vol 20:10:70), it is assembled into battery.After battery assembly is completed, shelve
For 24 hours, it infiltrates electrolyte sufficiently, then after carrying out low current chemical conversion, then carries out 0.5C-0.5C charge and discharge cycles.
Embodiment 2:
Anode uses porous carbon sulfur loaded, and cathode is used metal lithium sheet, separated between electrode using 16 μm of diaphragms, using lithium piece-
Diaphragm-anode sequence is assembled into battery, electrolyte is added, electrolyte is that LITFSI is lithium salts, and the LiNO3 of 0.4mol/L is
Additive, solvent are DOL+DME(vol 1:1), it is assembled into battery.Three electrodes draw three conducting wires respectively.Battery pack installs
It after, shelves for 24 hours, infiltrates electrolyte sufficiently, then carry out 0.5C-0.5C charge and discharge cycles.
Summarize, the circulating cycle number of the 80% of initial capacity be reduced to as the cycle life of battery using battery capacity, watch embodiment 1,
2 with ion homeostasis electrode battery as a result, result is as shown in the table:
| Case study on implementation | Battery capacity (mAh) | Efficiency for charge-discharge (%) | Cycle life |
| Embodiment 1 | 1650 | 99 | 860 weeks |
| Embodiment 2 | 3720 | 98 | 820 weeks |
| Comparative example 1 | 930 | 99 | 910 weeks |
| Comparative example 2 | 4580 | 96 | 350 weeks |
By upper table data it is found that under conditions of same volume, the capacity of lithium ion battery (comparative example 1) is relatively low, and uses new
The battery (embodiment 1) of type charge-discharge principle, the capacity of battery greatly promote, efficiency for charge-discharge and cycle life and conventional lithium from
Sub- battery is not much different；For lithium-sulfur cell, although the capacity of battery can be reduced to a certain extent, battery fills
Discharging efficiency and cycle life greatly promote.It can be seen that not sacrificing battery performance largely using the battery of new principle
Under the conditions of, the energy density and security performance of battery can be increased substantially.
The above is only a preferred embodiment of the present invention.It should be pointed out that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
This is considered as protection scope of the present invention.
Claims (7)
1. a kind of battery with ion homeostasis electrode, it is characterised in that: battery includes the electrode of ion homeostasis.
2. a kind of battery with ion homeostasis electrode according to claim 1, it is characterised in that: battery at least wraps
Containing metal anode, ion homeostasis electrode and cathode, separated between electrode with diaphragm.
3. a kind of battery with ion homeostasis electrode according to claim 1, it is characterised in that: ion be lithium from
One of son, sodium ion, potassium ion, magnesium ion, calcium ion, aluminium ion, zinc ion, iron ion are a variety of.
4. a kind of battery with ion homeostasis electrode according to claim 1, it is characterised in that: ion dynamic is flat
Weighing electrode can be with reversible absorption and release ion, and ion can pass through ion homeostasis electrode.
5. a kind of battery with ion homeostasis electrode according to claim 1, it is characterised in that: battery is charging
In the process, ion is migrated from cathode to ion homeostasis electrode, and ion is migrated from ion homeostasis electrode to anode；
During discharge, ion is migrated from anode to ion homeostasis electrode, and ion is migrated from ion dynamic electrode to cathode.
6. a kind of battery with ion homeostasis electrode according to claim 1, it is characterised in that: charge and discharge process
In, change rate≤50% of ion homeostasis electrode intermediate ion total amount；Or before and after charge and discharge, in ion homeostasis electrode
Total ion concentration variation≤battery intermediate ion migration total amount 50%.
7. a kind of battery with ion homeostasis electrode according to claim 6, it is characterised in that: using one or
The total amount of multiple control circuit control ion homeostasis electrode intermediate ions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810183718.7A CN110233236A (en) | 2018-03-06 | 2018-03-06 | A kind of battery with ion homeostasis electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810183718.7A CN110233236A (en) | 2018-03-06 | 2018-03-06 | A kind of battery with ion homeostasis electrode |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111370791A (en) * | 2020-03-16 | 2020-07-03 | 中山大学 | A lithium-sulfur battery formation method and lithium-sulfur battery prepared by the formation method |
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| US20110165457A1 (en) * | 2008-09-19 | 2011-07-07 | He3Da S.R.O. | Lithium accumulator and the method of producing thereof |
| US20150171398A1 (en) * | 2013-11-18 | 2015-06-18 | California Institute Of Technology | Electrochemical separators with inserted conductive layers |
| CN107086290A (en) * | 2017-01-15 | 2017-08-22 | 赵前永 | A kind of multiple electrode structure metal negative electrode battery |
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| US20110165457A1 (en) * | 2008-09-19 | 2011-07-07 | He3Da S.R.O. | Lithium accumulator and the method of producing thereof |
| US20150171398A1 (en) * | 2013-11-18 | 2015-06-18 | California Institute Of Technology | Electrochemical separators with inserted conductive layers |
| CN107086290A (en) * | 2017-01-15 | 2017-08-22 | 赵前永 | A kind of multiple electrode structure metal negative electrode battery |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111370791A (en) * | 2020-03-16 | 2020-07-03 | 中山大学 | A lithium-sulfur battery formation method and lithium-sulfur battery prepared by the formation method |
| CN111370791B (en) * | 2020-03-16 | 2023-12-29 | 中山大学 | Lithium-sulfur battery formation method and lithium-sulfur battery prepared by formation method |
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Application publication date: 20190913 |