CN105958006B - A kind of electrode of lithium cell, preparation method and lithium battery with heat sinking function - Google Patents
A kind of electrode of lithium cell, preparation method and lithium battery with heat sinking function Download PDFInfo
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- CN105958006B CN105958006B CN201610577114.1A CN201610577114A CN105958006B CN 105958006 B CN105958006 B CN 105958006B CN 201610577114 A CN201610577114 A CN 201610577114A CN 105958006 B CN105958006 B CN 105958006B
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- electrode
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- heat pipe
- battery
- active material
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 44
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 44
- 238000002360 preparation method Methods 0.000 title claims description 10
- 239000007772 electrode material Substances 0.000 claims abstract description 14
- 239000003792 electrolyte Substances 0.000 claims abstract description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 16
- -1 alkoxy silane Chemical compound 0.000 claims description 15
- 238000004132 cross linking Methods 0.000 claims description 15
- 229910000077 silane Inorganic materials 0.000 claims description 15
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 10
- 238000006243 chemical reaction Methods 0.000 claims description 10
- 239000010439 graphite Substances 0.000 claims description 9
- 229910002804 graphite Inorganic materials 0.000 claims description 9
- 230000005611 electricity Effects 0.000 claims description 8
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 7
- 239000004734 Polyphenylene sulfide Substances 0.000 claims description 6
- 239000011149 active material Substances 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- 229920000069 polyphenylene sulfide Polymers 0.000 claims description 6
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 5
- 240000002853 Nelumbo nucifera Species 0.000 claims description 5
- 235000006508 Nelumbo nucifera Nutrition 0.000 claims description 5
- 235000006510 Nelumbo pentapetala Nutrition 0.000 claims description 5
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical group [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims description 5
- 239000004917 carbon fiber Substances 0.000 claims description 5
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 5
- 239000003963 antioxidant agent Substances 0.000 claims description 4
- 230000003078 antioxidant effect Effects 0.000 claims description 4
- 239000007822 coupling agent Substances 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 4
- 239000000843 powder Substances 0.000 claims description 3
- 238000000605 extraction Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 239000002826 coolant Substances 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 2
- 230000008569 process Effects 0.000 abstract description 2
- 230000000903 blocking effect Effects 0.000 abstract 1
- 239000000203 mixture Substances 0.000 description 17
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 8
- 229910052799 carbon Inorganic materials 0.000 description 7
- 239000003054 catalyst Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 239000003960 organic solvent Substances 0.000 description 6
- 235000019441 ethanol Nutrition 0.000 description 5
- 239000003999 initiator Substances 0.000 description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 4
- 239000002131 composite material Substances 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 230000017525 heat dissipation Effects 0.000 description 3
- 150000002500 ions Chemical class 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 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 2
- DTQVDTLACAAQTR-UHFFFAOYSA-N Trifluoroacetic acid Chemical compound OC(=O)C(F)(F)F DTQVDTLACAAQTR-UHFFFAOYSA-N 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 239000013543 active substance Substances 0.000 description 2
- 125000000217 alkyl group Chemical group 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O ammonium group Chemical group [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 2
- 125000001301 ethoxy group Chemical group [H]C([H])([H])C([H])([H])O* 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 2
- ICIWUVCWSCSTAQ-UHFFFAOYSA-M iodate Chemical compound [O-]I(=O)=O ICIWUVCWSCSTAQ-UHFFFAOYSA-M 0.000 description 2
- 230000001678 irradiating effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 125000000956 methoxy group Chemical group [H]C([H])([H])O* 0.000 description 2
- 229920006389 polyphenyl polymer Polymers 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 2
- 235000017557 sodium bicarbonate Nutrition 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 150000003568 thioethers Chemical class 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- QNODIIQQMGDSEF-UHFFFAOYSA-N (1-hydroxycyclohexyl)-phenylmethanone Chemical compound C=1C=CC=CC=1C(=O)C1(O)CCCCC1 QNODIIQQMGDSEF-UHFFFAOYSA-N 0.000 description 1
- VESLRNDUOCLYDT-UHFFFAOYSA-N 1-phenylprop-2-en-1-amine Chemical compound C=CC(N)C1=CC=CC=C1 VESLRNDUOCLYDT-UHFFFAOYSA-N 0.000 description 1
- DDFHBQSCUXNBSA-UHFFFAOYSA-N 5-(5-carboxythiophen-2-yl)thiophene-2-carboxylic acid Chemical compound S1C(C(=O)O)=CC=C1C1=CC=C(C(O)=O)S1 DDFHBQSCUXNBSA-UHFFFAOYSA-N 0.000 description 1
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical group [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 1
- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical compound C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 description 1
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical group [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 1
- 229910000733 Li alloy Inorganic materials 0.000 description 1
- 229910052493 LiFePO4 Inorganic materials 0.000 description 1
- 102220479493 Pantetheinase_R33N_mutation Human genes 0.000 description 1
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 235000019270 ammonium chloride Nutrition 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 235000019400 benzoyl peroxide Nutrition 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Chemical group BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 1
- 229910052794 bromium Chemical group 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 238000002242 deionisation method Methods 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- LTYMSROWYAPPGB-UHFFFAOYSA-N diphenyl sulfide Chemical compound C=1C=CC=CC=1SC1=CC=CC=C1 LTYMSROWYAPPGB-UHFFFAOYSA-N 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 125000005909 ethyl alcohol group Chemical group 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 229910052740 iodine Inorganic materials 0.000 description 1
- 239000011630 iodine Substances 0.000 description 1
- 239000001989 lithium alloy Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000007773 negative electrode material Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000007774 positive electrode material Substances 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000010792 warming Methods 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
- 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
-
- 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
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- 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
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
-
- 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
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/654—Means for temperature control structurally associated with the cells located inside the innermost case of the cells, e.g. mandrels, electrodes or electrolytes
-
- 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
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6552—Closed pipes transferring heat by thermal conductivity or phase transition, e.g. heat pipes
-
- 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
- H01M4/139—Processes of manufacture
-
- 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)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The present invention provides a kind of electrode of lithium cell and lithium battery with heat sinking function, electrode includes the electrode active material of battery main body and body exterior, battery main body is made of heat pipe, electrode active material is arranged in the outside of main body, electrode body is sealed in shell and the hot junction with the part of electrolyte contacts as heat pipe, and electrode body stretches out shell and the cold end as the part of external terminal as heat pipe.Electrode reduces the temperature of battery by the cooling medium in heat pipe in the cycle of hot junction and cold end, and there is no the blocking of medium in heat transfer process, radiating efficiency is high, and by electrode directly as radiating element, simplify the structure of battery, reduces difficulty of processing and manufacturing cost.
Description
Technical field
The present invention relates to a kind of electrode of lithium cell and preparation method and lithium batteries, and in particular to a kind of lithium electricity with heat sinking function
Pond electrode, preparation method and lithium battery.
Background technology
The lithium rechargeable battery (hereinafter referred to as lithium battery) of broad sense is mainly by anode, cathode, between positive and negative anodes
Diaphragm and electrolyte constituted, diaphragm makes positive and negative anodes be separated from each other, and is not in contact each other.Lithium battery have high-energy density,
The advantages that high power density, capacitance be big and memory-less effect.However, the electrolyte of lithium battery has combustibility, and lithium electricity
During the work time, the active material of positive and negative anodes can decompose and discharge amount of heat, cause lithium battery in improper service condition in pond
Under, danger may be will produce, or even set off an explosion.
Lithium battery mainly can be divided into two kinds of forms because of heat caused by improper use：One kind is that positive and negative terminal meets improper bear
When load, the reaction of caused inside battery, such as overcharge (charging voltage is excessively high), cross put, external short circuit (instantaneous large-current) etc.
Generated heat can cause battery bulk temperature to rise；Another kind is lithium battery by external force, such as hit, puncture, crushing when,
It can make inside battery moment partial short-circuit and generate high temperature.Other than the generated heat of improper use, lithium battery is normally chemical
Reaction is also main heat source.
When lithium battery temperature reaches a certain degree, lithium battery interior material can be caused and generate chemical reaction and release heat
Amount, if accumulation of heat speed is more than radiating rate so that temperature continues to increase, then causes other exothermic effects, and lithium will be caused electric
Pond self-heating, temperature rapid increase, this is referred to as thermal runaway (Thermal Runaway), is that lithium battery generates dangerous master
Want reason.Therefore, how to remove the heat of lithium battery and heat accumulation is avoided to be very important project.
The mode of prior art generally use setting cooling fin cools down to lithium battery, and a kind of mode is to set cooling fin
It sets in the outside of battery case, heat diffuses to battery case from inside battery, then transfers heat to cooling fin by shell,
Since the capacity of heat transmission of shell is bad, heat dissipation effect in this way have it is to be hoisted；Another way is that cooling fin is arranged
In the inside of battery case and between positive/negative plate, which is bad in addition to heat dissipation effect, the heat dissipation between positive/negative plate
Piece can also influence the flowing of inside battery ion, and then influence the working efficiency of battery.
The object of the present invention is to provide a kind of electrode of lithium cell and manufacturing method with heat sinking function, the main body of electrode by
Heat pipe is constituted, and the outside of main body is provided with electrode active material, electrode body be sealed in shell and with electrolyte contacts
Hot junction of the part as heat pipe, electrode body stretch out shell and the cold end as the part of external terminal as heat pipe.Pass through
Cooling medium in heat pipe reduces the temperature of battery in the cycle of hot junction and cold end, and does not have the resistance of medium in heat transfer process
Gear, radiating efficiency is high, and simplifies the structure of battery directly as radiating element by electrode, reduces difficulty of processing and is manufactured into
This.
Invention content
The present invention provides a kind of electrode of lithium cell with heat sinking function, can effectively improve the radiating efficiency of battery, letter
Electrochemical cell structure, and reduce difficulty of processing and manufacturing cost.
Specifically, technical scheme of the present invention is mainly achieved in the following ways：
The present invention provides a kind of electrode of lithium cell with heat sinking function, and electrode includes the electricity of battery main body and body exterior
Pole active material, battery main body are made of heat pipe, and electrode active material is arranged in the outside of main body, and electrode body is sealed in shell
Interior and hot junction of the part as heat pipe with electrolyte contacts, electrode body stretch out shell and make as the part of external terminal
For the cold end of heat pipe.
Further, electrode of lithium cell of the present invention, electrode body at least two are located at the two of diaphragm
Positive active material is arranged in the electrode body outside of side, diaphragm side, and setting cathode is lived outside the electrode body of the diaphragm other side
Property substance.
Further, electrode of lithium cell of the present invention, electrode body are divided into two groups, are located at the both sides of diaphragm,
And every group of battery passes through the entirety that is electrically connected to form in cold end.One group of positive electrode or negative electrode energy are constituted by multiple electrodes main body
The radiating efficiency of electrode is further increased, while increasing the contact area of electrode and electrolyte, improves the transformation efficiency of battery.
Further, electrode of lithium cell of the present invention, negative electrode active material can be lithium, lithium alloy or graphite etc., just
Pole active material can be LiFePO4, cobalt acid lithium etc..
The present invention also provides a kind of manufacturing methods of above-mentioned electrode, are located in advance using the outer surface of organic solution opposite heat tube
Reason forms surface micro-structure, later in micro-structure surface settling electrode active substance, finally in the cold end extraction electrode of heat pipe
Lug.
Further, the manufacturing method of electrode of lithium cell of the present invention first uses 5% or so dilute sulfuric acid or dilute salt
The appearance of sour opposite heat tube is corroded -2 minutes 30 seconds, forms coarse structure in the appearance of heat pipe, then heat pipe is put by quality point
Number is respectively polyphenylene sulfide 30-50%, coupling agent 3-10%, antioxidant 0.5-5%, carbon fiber powder 20-30% and surplus carbon
In the mixing liquid that sour hydrogen sodium is constituted, -2 hours 30 minutes are stood, to adhere to by polyphenylene sulfide and carbon fiber in the appearance of heat pipe
The surface micro-structure that composite material is formed.Diphenyl sulfide has metal material (appearance of heat pipe is generally made from a metal) higher
Adhesive capacity, the carbon fiber in composite material material can adjust the resistivity of surface micro-structure.Because of carbon in preparation process
The addition of sour hydrogen sodium can prevent the fully crosslinked of polyphenylene sulfide, and to make, the surface of surface micro-structure forms size and depth is random
The small rut of distribution increases the bond strength of active material and surface micro-structure in order to the deposition of subsequent electrode active material.
Further, the manufacturing method of electrode of lithium cell of the present invention, by sol gel reaction and it is ultraviolet or/
With heat cross-linking reaction settling electrode active substance on surface micro-structure.Concretely：It can be ultraviolet or hot by containing in strand
Alkoxy silane, lotus positive electricity alkoxy silane, the graphite of crosslinked group is dilute and electrode active material to carry out colloidal sol-jointly solidifying
Glue reacts, and then carries out UV crosslinking or heat cross-linking, electrode active material is deposited on surface micro-structure.Wherein, molecule
In chain containing can alkoxy silane, the lotus positive electricity alkoxy silane of ultraviolet or heat cross-linking group form ion during the reaction
The main body of exchange membrane, electrode active material are embedded under the action of graphite is dilute in amberplex, and electrode is collectively formed most
Outer layer active layer.Amberplex can make the ion penetration in electrolyte consequently facilitating with electrode activity thing qualitative response.
In the strand containing can ultraviolet or heat cross-linking group alkoxy silane, chemical formula is represented by
R1aR2bSiY (4-a-b), wherein R1 are 4- ethenylphenyls, γ-(methacryloxypropyl) propyl, γ-glycidyl ether oxygen third
Base or 3- (to vinyl-aminotoluene base)-propyl；R2 is the alkyl or aryl of 1-6 carbon；Y is methoxy or ethoxy；A's
Value is 1 or 2, and the value of b is 0 or 1, and (a+b)≤2；Can select it is one such, can also simultaneously use two kinds or two kinds with
In upper strand containing can ultraviolet or heat cross-linking group alkoxy silane.
The lotus positive electricity alkoxy silane, chemical formula are represented by [R33N (CH2) nSiY3]+X-, and wherein R3 is 1-4
The straight chained alkyl of a carbon；N is the integer of 1-4；Y is methoxy or ethoxy；X is iodine or bromine.
Sol gel reaction of the present invention, refer to by strand containing can ultraviolet or heat cross-linking group alcoxyl
Base silane and lotus positive electricity alkoxy silane and graphite is dilute and electrode active material, are being added organic solvent, catalyst and initiation
It is kept stirring under conditions of agent until forming mixture of viscous form.Catalyst include hydrochloric acid, sulfuric acid, trifluoroacetic acid, sodium hydroxide,
Ammonium chloride or ammonium fluoride etc., initiator include photoinitiator 1173, photoinitiator 184, photoinitiator 651, photoinitiator 907 or
Dibenzoyl peroxide etc., organic solvent include ethyl alcohol.
UV crosslinking of the present invention refers to：Under the action of ultraviolet lamp, uniform illumination is carried out to mixture of viscous form.
Heat cross-linking of the present invention refers to：Mixture of viscous form is warming up to 200-300 DEG C or so, then keeps the temperature 15-
30 minutes.
Description of the drawings
Fig. 1 is the structural schematic diagram of lithium battery described in the invention；
Specific embodiment explanation
Embodiment 1
As shown in Figure 1, a kind of electrode of lithium cell (2) with heat sinking function, lithium battery includes shell (1) and is arranged outside
Electrolyte (not marking reference numeral) in shell (1) and electrode (2), the electrode include electrode body (2A, 2B) and electrode
The active material (3A, 3B) of body surfaces, two electrode bodies are located at the both sides of diaphragm (4), and electrode body is by heat pipe structure
At the electrode main body-portions conduct of shell (1) is stretched out in hot junction (B) of the electrode main body-portions as heat pipe in shell (1)
The cold end of heat pipe.At work, a large amount of heat is gathered near electrode (electrode point for being located at enclosure) lithium battery, heat
Heat heat pipe in cooling medium volatilization and to cold end move, by the heat diffusion of inside battery to cold end, and from cold end to
Outer diverging, condensed cooling medium flow back to heat pipe hot junction again, so on circulate, internal temperature of battery are reduced to reach
Effect.
Embodiment 2
The preparation process of electrode of lithium cell：First heat pipe batch is put into and fills 5% or so dilute sulfuric acid or the appearance of dilute hydrochloric acid
In device, the appearance of opposite heat tube is corroded 30 seconds, to form coarse structure in the appearance of heat pipe, then by heat pipe taking-up deionized water
It rinses repeatedly 3 times, it is polyphenylene sulfide 50%, coupling agent 10%, antioxidant 3%, carbon fiber that then heat pipe, which is put by mass fraction,
It ties up in the mixing liquid that powder 35% and surplus sodium bicarbonate are constituted, stands 45 minutes, to adhere to by polyphenyl in the appearance of heat pipe
The surface micro-structure that thioether and carbon fibre composite are formed.
By γ-glycidyl ether oxygen propyl trimethoxy silicane (KH-560), γ-(methacryloxypropyl) propyl trimethoxy
Base silane (KH-570), iodate N- (3- triethoxies silicon substrate) propyl-N, N, N- trimethyl ammoniums and appropriate graphite is dilute and electrode active
Property substance mix after, organic solvent, catalyst and initiator is added, stirring 12 hours forms mixture of viscous form.Wherein,
KH-560 and KH-570 be strand in containing can ultraviolet or heat cross-linking group alkoxy silane, and press 1：1 ratio
Admixed graphite is dilute to account for the 10% of mixture gross mass, and electrode active material accounts for the 30% of mixture gross mass.Organic solvent is second
Alcohol, the amount of ethyl alcohol are 6 times of the total amounts (molar ratio) of KH-560 and KH-570, and catalyst chooses hydrochloric acid, accounts for mixture gross mass
5%, initiator choose photoinitiator 1173, account for the 2% of mixture gross mass.
Preferably the heat pipe for being formed with surface micro-structure is immersed in mixture of viscous form, and irradiating ultraviolet light 2 hours, with
Outermost layer active layer is formed in the outer surface of heat pipe.
Embodiment 3
The preparation process of electrode of lithium cell：First heat pipe batch is put into and fills 5% or so dilute sulfuric acid or the appearance of dilute hydrochloric acid
In device, the appearance of opposite heat tube is corroded 2 minutes, to form coarse structure in the appearance of heat pipe, then by heat pipe taking-up deionization
Water rinses 5 times repeatedly, and it is polyphenylene sulfide 60%, coupling agent 15%, antioxidant 3%, carbon that then heat pipe, which is put by mass fraction,
In the mixing liquid that fiber dust 20% and surplus sodium bicarbonate are constituted, 1 hour is stood, to adhere to by polyphenyl in the appearance of heat pipe
The surface micro-structure that thioether and carbon fibre composite are formed.
By γ-glycidyl ether oxygen propyl trimethoxy silicane (KH-560), γ-(methacryloxypropyl) propyl trimethoxy
Base silane (KH-570), iodate N- (3- triethoxies silicon substrate) propyl-N, N, N- trimethyl ammoniums and tetraethoxysilane with it is appropriate
After the dilute mixing with electrode active material of graphite, organic solvent, catalyst and initiator is added, 12 hours of stirring form thick
Mixture.Wherein, KH-560 and KH-570 be strand in containing can ultraviolet or heat cross-linking group alkoxy silane, and
By 1：1.5 ratio mixing, graphite is dilute to account for the 15% of mixture gross mass, and electrode active material accounts for mixture gross mass
40%.Organic solvent is ethyl alcohol, and the amount of ethyl alcohol is 6 times of the total amounts (molar ratio) of KH-560 and KH-570, and catalyst chooses salt
Acid, accounts for the 5% of mixture gross mass, and initiator chooses photoinitiator 1173, accounts for the 2% of mixture gross mass.
Finally the heat pipe for being formed with surface micro-structure is immersed in mixture of viscous form, and irradiating ultraviolet light 1 hour, together
When heat the mixture to 200 DEG C, later keep the temperature 15 minutes, with the outer surface of heat pipe formed outermost layer active layer.
Claims (3)
1. a kind of preparation method of the electrode of lithium cell with heat sinking function, electrode include the electrode of electrode body and body exterior
Active material, electrode body are made of heat pipe, and electrode active material is arranged in the outside of main body, and electrode body is sealed in shell
And the hot junction with the part of electrolyte contacts as heat pipe, electrode body stretch out shell and the part conduct as external terminal
The cold end of heat pipe, it is characterised in that:
A carries out pretreatment using the outer surface of organic solution opposite heat tube and forms surface micro-structure, and organic solution is that mass fraction is
Polyphenylene sulfide 30-50%, coupling agent 3-10%, antioxidant 0.5-5%, carbon fiber powder 20-30% and surplus sodium bicarbonate structure
At mixing liquid；
B settling electrode active objects on the surface micro-structure by sol gel reaction and the reaction of ultraviolet or/and heat cross-linking
Matter；
Lugs of the c in the cold end extraction electrode of heat pipe.
2. a kind of preparation method of electrode of lithium cell with heat sinking function according to claim 1, which is characterized in that
Before the outer surface of opposite heat tube is pre-processed, 5% dilute sulfuric acid or the appearance of dilute hydrochloric acid opposite heat tube is first used to corrode 30 seconds -2
Minute.
3. a kind of preparation method of electrode of lithium cell with heat sinking function according to claim 1, which is characterized in that will
In strand containing can ultraviolet or heat cross-linking group alkoxy silane, lotus positive electricity alkoxy silane, graphite is dilute and electrode
Active material carries out sol gel reaction jointly, then carries out UV crosslinking or heat cross-linking.
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| WO1994006163A1 (en) * | 1992-09-10 | 1994-03-17 | Pita Witehira | Electrode frame having structural members and additional web material |
| US5840371A (en) * | 1997-07-02 | 1998-11-24 | Bell Communications Research, Inc. | Treatment for improved conductivity of collector-electrode interface in laminated lithium-ion rechargeable batteries |
| CN201838671U (en) * | 2010-06-18 | 2011-05-18 | 艾诺技术有限公司 | Lithium battery with built-in metal conduit |
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