CN109411761A - The multifunctional unit combination electrode slurry and preparation method of the polymer containing active carbonyl group - Google Patents
The multifunctional unit combination electrode slurry and preparation method of the polymer containing active carbonyl group Download PDFInfo
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- CN109411761A CN109411761A CN201811468194.2A CN201811468194A CN109411761A CN 109411761 A CN109411761 A CN 109411761A CN 201811468194 A CN201811468194 A CN 201811468194A CN 109411761 A CN109411761 A CN 109411761A
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- 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
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
- H01M4/624—Electric conductive fillers
- H01M4/625—Carbon or graphite
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- 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
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- 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
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
- H01M4/621—Binders
- H01M4/622—Binders being polymers
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- 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
Abstract
The present invention provides the multifunctional unit combination electrode slurries and preparation method of a kind of polymer containing active carbonyl group, traditional binder and stabilizer can not only partly or entirely be replaced with polymer containing active carbonyl group, reduce the dosage of inactive ingredients in traditional electrode slurry, improve the lithium ion diffusivity of electrode, simultaneously, its active carbonyl group can also contribute capacity, and then effectively improve the power density and energy density of electrode.The electrode slurry of the polymer provided by the present invention containing active carbonyl group, it is characterized by: in solid phase components, the mass fraction of electrode active material is 90%~95%, the mass fraction of conductive additive is 0.5%~5%, the mass fraction of active carbonyl group polymer is 0.5%~12%, the mass fraction of binder is 0%~10%, and stabilizer mass fraction is 0%~2%.
Description
Technical field
The invention belongs to field of batteries, and in particular to a kind of multifunctional unit combination electrode slurry of the polymer containing active carbonyl group
Material and preparation method.
Technical background
Today's society energy shortage and problem of environmental pollution are serious, and sustainable development is the common hope of the whole mankind and struggle
Thus target has caused the rapid development of new energy technology, and lithium ion battery is the important composition of Development of Novel green energy resource
Part.Lithium ion battery has been widely used in moving because having many advantages, such as long service life, highly-safe, environmentally protective
Electronic equipment, electric car, field of aerospace and extensive energy storage field.
Traditional lithium ion battery electrode sizing agent mainly includes active material, conductive additive, binder, stabilizer and molten
Agent, active material provide energy density, and conductive additive improves electrode conductivuty, and add stabilizer raising electrocondution slurry and stablize
Property, binder improves structural stability.Current commercialized positive electrode active material mainly has LiFePO4, lithium nickelate, manganese
Sour lithium, cobalt acid lithium, nickel cobalt aluminium ternary, nickel-cobalt-manganese ternary etc., negative electrode material mainly has artificial graphite, natural graphite, lithium titanate etc..
But these common electrode material electric conductivity are poor, and lithium ion diffusion velocity is slow, in electrode production process, need to be added
A large amount of conductive agent, therefore result in the need for that a certain amount of binder and stabilizer is added to guarantee between active material and conductive agent
Stable and uniform contact.Binder employed in lithium ion battery electrode sizing agent preparation process is usually electrically inactive at present
Kynoar, polyvinyl alcohol, polytetrafluoroethylene (PTFE), polyethylene glycol, carboxymethyl cellulose and modified SBR rubber etc., conductive paste
Material stabilizer be usually inactive dodecyl sodium sulfate, neopelex, polyvinyl alcohol, sodium lignin sulfonate,
Cetyl trimethylammonium bromide, polyvinylpyrrolidone, although the component of these electrochemically inactives, which can play, stablizes electricity
The effect of pole structure, but their addition also results in the reduction of battery energy density, while can also hinder electrochemical reaction
The diffusion of electronics and ion in the process reduces the power density of battery.
Summary of the invention
The present invention be to solve the above-mentioned problems and carry out, and it is an object of the present invention to provide a kind of polymer containing active carbonyl group it is more
Function integrates combination electrode slurry and preparation method thereof, and it is nonactive can to reduce stabilizer and binder etc. in traditional electrode slurry
The dosage of component improves the lithium ion diffusivity of electrode, can more contribute capacitance, and then effectively improves the power density of electrode
And energy density.
The present invention to achieve the goals above, uses following scheme:
<electrode slurry>
The present invention provides a kind of multifunctional unit combination electrode slurry of polymer containing active carbonyl group, it is characterised in that:
In solid phase components, the mass fraction of electrode active material is 90%~95%, the mass fraction of conductive additive is 0.5%~
5%, the mass fraction of active carbonyl group polymer is 0.5%~12%, and the mass fraction of binder is 0%~10%, stabilizer
Mass fraction is 0%~2%.
Preferably, the multifunctional unit combination electrode slurry of the polymer provided by the invention containing active carbonyl group, can also have
Have following characteristics: active carbonyl group polymer contains one of imide group, acrylate group, amide group or a variety of.
Preferably, the multifunctional unit combination electrode slurry of the polymer provided by the invention containing active carbonyl group, can also have
Have following characteristics: active carbonyl group polymer is one of polyimide, polyacrylate, polyamide-based (nylon) or more
Kind.
Preferably, the multifunctional unit combination electrode slurry of the polymer provided by the invention containing active carbonyl group, can also have
Have following characteristics: polyimides include: equal phthalic anhydride type polyimides (being synthesized by pyromellitic acid anhydride with aromatic diamine),
Ether anhydride type polyimides (synthesis is synthesized with diamine by diphenyl ether tetracarboxylic anhydride), ketone acid anhydride type polyimides (benzophenone tetracid
Dianhydride is synthesized with diamine), bismaleimide (being synthesized by maleic anhydride with diamine), PMR type polyimides is (by aromatic series
The monomers such as the monoalkyl ester of the dialkyl ester of tetrabasic carboxylic acid, aromatic diamine and 5- norbornene -2,3- dicarboxylic acids gather on the spot
Close), 1,4,5,8 naphthalenetetracarboxylic acid acid anhydride type polyimides (being synthesized by 1,4,5,8 naphthalenetetracarboxylic acid acid anhydride with diamine), tetracarboxylic acid anhydride
Type imines (being synthesized by tetracarboxylic acid anhydride with diamine), 1,2,4,5- cyclohexanetetracarboxylic acid dianhydride type polyimides (by 1,2,4,
5- cyclohexanetetracarboxylic acid dianhydride is synthesized with diamine), 3,4,9,10- tetracarboxylic anhydride type polyimides (3,4,9,10- tetracarboxylic acid
Acid anhydrides is synthesized with diamine) at least one；Polyacrylate is polymethyl acrylate, polyethyl acrylate, polyacrylic acid
At least one of butyl ester, polymethyl methacrylate, polyethyl methacrylate, polybutyl methacrylate；Polyamide is
Nylon 6 (polycaprolactam), nylon66 fiber (polyhexamethylene adipamide), nylon 11 (poly- omega-amino undecanoyl), nylon 12 (poly- ten
Two lactams), nylon 610 (polyhexamethylene sebacamide), nylon 612, nylon 1010, nylon 46, nylon 7, nylon 9, nylon 13,
At least one of nylon 61, nylon 9 T.
Preferably, the multifunctional unit combination electrode slurry of the polymer provided by the invention containing active carbonyl group can also have
Following characteristics: the molecular weight of active carbonyl group polymer is 200~5000000.
Preferably, the multifunctional unit combination electrode slurry of the polymer provided by the invention containing active carbonyl group can also have
Following characteristics: electrode active material is positive electrode active materials or negative electrode active material, also, positive electrode active materials are ferric phosphate
Lithium, lithium nickelate, LiMn2O4, cobalt acid lithium, nickel cobalt aluminium ternary, any one in nickel-cobalt-manganese ternary material, negative electrode active material is
Artificial graphite, natural graphite, lithium titanate, any one in silicon-carbon cathode material.
Preferably, the multifunctional unit combination electrode slurry of the polymer provided by the invention containing active carbonyl group can also have
Following characteristics: conductive additive is at least one of carbon black, acetylene black, carbon nanotube, graphene, carbon fibre material.
Preferably, the multifunctional unit combination electrode slurry of the polymer provided by the invention containing active carbonyl group can also have
Following characteristics: the viscosity of electrode slurry is 3000~12000mPas.
<preparation method>
Further, the present invention also provides a kind of multifunctional unit combination electrode slurries for preparing the polymer containing active carbonyl group
Method, it is characterised in that: using electrode active material, conductive additive and active carbonyl group polymer as raw material, or by electrode
Active material, conductive additive, active carbonyl group polymer, binder or/and stabilizer mix in solvent step by step as raw material
And stir evenly, obtain the electrode slurry that solid content is 45%~60%, wherein in the solid phase components of electrode slurry, electrode
The mass fraction of active material is 90%~95%, and the mass fraction of conductive additive is 0.5%~5%, active carbonyl group polymerization
The mass fraction of object is 0.5%~12%, and the mass fraction of binder is 0%~10%, stabilizer mass fraction is 0%~
2%.
Preferably, the side of the multifunctional unit combination electrode slurry of preparation polymer containing active carbonyl group provided by the invention
Method can also have the feature that solvent is N-Methyl pyrrolidone (NMP), n,N-Dimethylformamide (DMF), water, isopropyl
Any one in alcohol.
The action and effect of invention
The present invention replaces traditional binder and stabilizer with active carbonyl group polymer moieties or all, reduces traditional electrode
The dosage of inactive ingredients in slurry preparation process improves electricity to improve the lithium ion diffusivity and electrode stability of electrode
The power density of pole；In addition, active carbonyl group polymer itself also has good electro-chemical activity, it being capable of additional contribution capacitor
Amount, and then promote the energy density of electrode and increase its specific capacity.
Detailed description of the invention
Fig. 1 is that the half-cell of the electrode material and conventional electrode materials containing polyimides (PI) prepared in embodiment one exists
Cycle performance test curve comparison diagram under 0.5C multiplying power；
Fig. 2 be in embodiment one the electrode material half-cell containing polyimides (PI) for preparing in 0.1C (scheming a), 0.2C
Charging and discharging curve figure under (figure b), 0.5C (figure c), 1C (figure d) multiplying power.
Specific embodiment
Below in conjunction with attached drawing to the multifunctional unit combination electrode slurry of the polymer of the present invention containing active carbonyl group and
The specific embodiment of preparation method is described in detail.
<embodiment one>
A kind of iron phosphate lithium electrode slurry and preparation method thereof containing polyimides is provided in the present embodiment one.
Preparation method:
1) 30.08g LiFePO4 is weighed, 0.48g carbon black is added in 12.12g N-Methyl pyrrolidone (NMP), mixing
It is put into three sections of double-planet de-airing mixer point after uniformly and stirs 10min, 20min, 90min respectively, setting revolving speed is respectively
100rpm、300rpm、500rpm。
2) 0.48g carbon nanotube is added in 9.024g NMP, after ultrasonic disperse 3h, addition 0.096g polyimides (by
Isosorbide-5-Nitrae, 5,8- naphthalenetetracarbacidic acidic acid anhydrides and 1, the synthesis of 3,5- tri- (4- aminobenzene) benzene), stabilization is made in magnetic agitation 2h under 450rpm revolving speed
Carbon nano tube dispersion liquid.
3) above-mentioned polyimides 0.544g, Kynoar (PVDF) 0.64g are weighed respectively, and 7.1g solvent NMP is added,
Magnetic agitation 12h, is made mixed solution under 500rpm revolving speed.
4) carbon nano tube dispersion liquid is added in LiFePO4 and black stock, using double-planet de-airing mixer,
90min is stirred under 500rpm revolving speed.
5) step 4 gained mixed solution is added to LiFePO4, carbon black, carbon nanotube mixture matter after step 5 stirring
In, using double-planet de-airing mixer, 90min is stirred under 500rpm revolving speed, obtains iron phosphate lithium electrode slurry.
Performance characterization:
Complete iron phosphate lithium electrode slurry will be mixed to be uniformly coated in carbon-coated aluminum foils, coating thickness 0.07mm.It will
The pole piece coated dries 6h in 60 DEG C of air dry ovens, moves into vacuum drying in vacuum oven, controls 120 DEG C of temperature, the time
12h.Roll-in after drying reuses the positive electrode pole piece that slicer is cut into diameter 10mm.
In the present embodiment one, lithium ionic cell positive pole is prepared using commercialized anode electrode active material
Piece, lithium metal make cathode pole piece, and electrolyte used is that lithium hexafluoro phosphate is assembled into half-cell progress electro-chemical test.It will be resulting
Iron phosphate lithium positive pole piece is assembled into half-cell and carries out electro-chemical test under 0.5C multiplying power, and gathers with PVDF is used for binder
Vinylpyrrolidone (PVP) is that the conventional electrode materials of stabilizer compare.
As shown in Figure 1, substituting the positive electrode of binder and stabilizer in 115 circle of circulation using active carbonyl group polymer
Specific capacity is basicly stable constant afterwards, and stablizes in higher level 132mAh/g, improves about compared to conventional electrode materials
46.7%；As shown in Fig. 2, from charging and discharging curve of the positive electrode under 0.1C, 0.2C, 0.5C, 1C multiplying power it can also be seen that
Electrode material puts the conservation rate that ten times greater rear specific capacity still has 71% in multiplying power, has embodied preferable chemical property.
<embodiment two>
The preparation method of iron phosphate lithium electrode slurry provided in the present embodiment two containing polyimides includes following step
It is rapid:
1) 28.96g LiFePO4 is weighed, 0.224g carbon black is added in 8g NMP, is put into double-planet vacuum after mixing
Three sections of blender point stirs 10min, 10min, 90min respectively, and setting revolving speed is respectively 100rpm, 200rpm, 500rpm.
2) 0.256g graphene powder is added in 4.76g NMP, after ultrasonic disperse 2h, 0.1024g polyimides is added
Stable graphene point is made in (by Isosorbide-5-Nitrae, 5,8- naphthalenetetracarbacidic acidic acid anhydrides are synthesized with certain herbaceous plants with big flowers diamines), magnetic agitation 2h under 500rpm revolving speed
Dispersion liquid.
3) it weighs 1.2g Kynoar (PVDF) and makees binder, separately weigh the above-mentioned polyimides of 1.2g, 5g NMP is added
In, magnetic agitation 12h, is made binder solution under 500rpm revolving speed.
4) LiFePO4 that graphene dispersing solution is added after stirring is stirred with black stock matter, using double-planet
De-airing mixer stirs 90min under 500rpm revolving speed；
5) it is stirred, uses in the LiFePO4, carbon black, graphene compounding substances after stirring binder solution addition
Double-planet de-airing mixer stirs 110min under 600rpm revolving speed, obtains iron phosphate lithium electrode slurry.
<embodiment three>
Contain the cobalt acid lithium electrode slurry of polyimides and polymethyl methacrylate (PMMA) provided in the present embodiment three
The preparation method of material includes the following steps:
1) 28.8g cobalt acid lithium is weighed, 0.64g carbon black is added 12.12g solvent NMP, it is true to be put into double-planet after mixing
Empty blender is divided to two sections to stir 20min, 90min respectively, and setting revolving speed is respectively 300rpm, 500rpm.
2) 0.64g graphene powder is added in 12.032g NMP, after ultrasonic disperse 2h, 0.064g polyimides is added
(being synthesized by pyromellitic dianhydride with p-phenylenediamine), 0.064 polyvinylpyrrolidone, magnetic agitation 2h under 500rpm revolving speed, system
At stable graphene dispersing solution.
3) 1.792g polymethyl methacrylate (PMMA) substitution binder is weighed, is added in 8g solvent NMP, 500rpm turns
The lower magnetic agitation 12h of speed, is made solution.
4) cobalt acid lithium that graphene dispersing solution is added after stirring is stirred with black stock matter, it is true using double-planet
Empty blender stirs 90min under 500rpm revolving speed；
5) in the cobalt acid lithium, carbon black, graphene compounding substances after stirring step 4 acquired solution addition step 5, using double
Planetary vacuum stirrer stirs 90min under 500rpm revolving speed, obtains cobalt acid lithium electrode slurry.
<example IV>
The preparation method of nickel cobalt manganese electrode slurry containing polyimides and nylon 6 provided in the present embodiment four includes such as
Lower step:
1) 29.6g nickel-cobalt-manganese ternary material is weighed, 0.7g carbon black is added in 14g NMP, is put into double-planet after mixing
Three sections of de-airing mixer point stirs 20min, 10min, 90min respectively, and setting revolving speed is respectively 200rpm, 300rpm, 600rpm.
2) 0.9g acetylene black powder is added in 16.92g NMP, after ultrasonic disperse 4h, 0.18g polyvinylpyrrolidine is added
Ketone makees stabilizer, and stable acetylene black dispersion liquid is made in magnetic agitation 2h under 500rpm revolving speed.
3) 0.31g polyimides is weighed respectively (to be closed by 3,4,9,10- tetracarboxylic anhydride and 4,4- diamino diphenyl disulfide
At), 0.2g nylon 6 is added in 5.58g NMP, and magnetic agitation 12h, is made mixed solution under 500rpm revolving speed.
4) the nickel-cobalt-manganese ternary material that acetylene black dispersion liquid is added after stirring is stirred with black stock matter, is used
Double-planet de-airing mixer stirs 120min under 600rpm revolving speed；
5) nickel-cobalt-manganese ternary material, carbon black, acetylene black that step 4 gained mixed solution is added after step 5 stirring are mixed
In substance, using double-planet de-airing mixer, 120min is stirred under 500rpm revolving speed, obtains nickel cobalt manganese electrode slurry.
<embodiment five>
The preparation method packet of iron phosphate lithium electrode slurry provided in the present embodiment five containing polymethyl acrylate (PMA)
Include following steps:
1) 30.4g LiFePO4 is weighed, 0.16g carbon black is added in 12.12g DMF, it is true to be put into double-planet after mixing
Empty blender, stirs 180min, and setting revolving speed is 400rpm.
2) 0.16g graphene powder is added in 2.976g DMF, after ultrasonic disperse 3h, 0.064g polyacrylic acid first is added
Ester substitutes stabilizer, and stable graphene dispersing solution is made in magnetic agitation 5h under 600rpm revolving speed.
3) 1.216g polymethyl acrylate substitution binder is weighed, is added in 5g DMF, magnetic agitation under 600rpm revolving speed
For 24 hours, solution is made.
4) LiFePO4 that graphene dispersing solution is added after stirring is stirred with black stock matter, using double-planet
De-airing mixer stirs 120min under 200rpm revolving speed.
5) step 3 gained mixed solution is added in the compounding substances after step 4 stirring, is stirred under vacuum using double-planet
Machine stirs 100min under 600rpm revolving speed, obtains iron phosphate lithium electrode slurry.
<embodiment six>
The preparation of negative electrode slurry containing polymethyl methacrylate (PMMA) and nylon66 fiber provided in the present embodiment six
Method includes the following steps:
1) 29.6g natural graphite is weighed, is added in 9g deionized water, is then placed in double-planet de-airing mixer 1500rpm
120min is stirred under revolving speed.
2) 0.768g graphene powder is added in 14.28g deionized water, after ultrasonic disperse 4h, the poly- first of 0.154g is added
Base methyl acrylate, magnetic agitation 4h under 500rpm revolving speed.Double-planet de-airing mixer is added, magnetic force stirs under 1500rpm revolving speed
Mix 120min.
3) 0.662g polymethyl methacrylate is weighed respectively, and 0.662g nylon66 fiber is added in 6g deionized water, 600rpm
Magnetic agitation 20h under revolving speed；
4) double-planet de-airing mixer is added in step 1 to 3 acquired solutions, magnetic agitation 120min under 1500rpm revolving speed,
Uniform negative electrode slurry is made.
<embodiment seven>
The system of negative electrode slurry containing polyimides and polymethyl methacrylate (PMMA) provided in the present embodiment seven
Preparation Method includes the following steps:
1) 22.2g lithium titanate is weighed, 0.288g acetylene black is weighed, is added in 9g isopropanol, is put into duplicate rows after mixing
120min is stirred under star de-airing mixer 1500rpm revolving speed.
2) 0.288g carbon nanotube is added in 5.357g isopropanol, after ultrasonic disperse 4h, the poly- methyl-prop of 0.1152g is added
E pioic acid methyl ester replaces stabilizer, magnetic agitation 4h under 500rpm revolving speed.Double-planet de-airing mixer is added, under 1500rpm revolving speed
Magnetic agitation 120min.
3) 0.4968g polymethyl methacrylate, 0.612g polyimides are weighed respectively (by pyromellitic dianhydride and second two
Amine synthesis), it is added in 6g isopropanol, substitution binder solution is made in magnetic agitation 20h under 600rpm revolving speed.
4) double-planet de-airing mixer is added in step 1 to 3 acquired solutions, magnetic agitation 120min under 1500rpm revolving speed,
Uniform negative electrode slurry is made.
In above embodiments two to seven, using active carbonyl group polymer (polyimides, PMMA, PMA, nylon 6, nylon
At least one of 66) conventional binders and stabilizer are partly or entirely substituted, more function of the polymer containing active carbonyl group are prepared for
Combination electrode slurry can be integrated.For binder, PVP is that the traditional electrode slurry of stabilizer is compared, containing active carbonyl with PVDF is used
The multifunctional unit combination electrode slurry of based polyalcohol is obviously improved in specific capacity and two aspect of high rate performance.
Above-described embodiment is only the illustration done to technical solution of the present invention.The carbonyl according to the present invention containing activity
Multifunctional unit combination electrode slurry of based polyalcohol and preparation method thereof is not merely defined in be retouched in the above-described embodiments
The content stated, but be defined by the scope defined by the claims..Base of the those skilled in the art of the invention in the embodiment
Any modify or supplement or equivalence replacement done on plinth, all in claim range claimed of the invention.
Claims (10)
1. a kind of multifunctional unit combination electrode slurry of polymer containing active carbonyl group, it is characterised in that:
In solid phase components, the mass fraction of electrode active material is 90%~95%, and the mass fraction of conductive additive is
0.5%~5%, the mass fraction of active carbonyl group polymer is 0.5%~12%, and the mass fraction of binder is 0%~10%,
Stabilizer mass fraction is 0%~2%.
2. the multifunctional unit combination electrode slurry of the polymer according to claim 1 containing active carbonyl group, it is characterised in that:
Wherein, the active carbonyl group polymer contains one of acid imide, acrylate, amide functional group or a variety of.
3. the multifunctional unit combination electrode slurry of the polymer according to claim 2 containing active carbonyl group, it is characterised in that:
Wherein, the active carbonyl group polymer is one of polyimide, polyacrylate, polyamide-based or a variety of.
4. the multifunctional unit combination electrode slurry of the polymer according to claim 3 containing active carbonyl group, it is characterised in that:
Wherein, the polyimides includes: equal phthalic anhydride type polyimides, ether anhydride type polyimides, ketone acid anhydride type polyimides, span
Come acid imide, PMR type polyimides, 1,4,5,8 naphthalenetetracarboxylic acid acid anhydride type polyimides, tetracarboxylic acid anhydride type imines, 1,2,4,5-
At least one of cyclohexanetetracarboxylic acid dianhydride type polyimides, 3,4,9,10- tetracarboxylic anhydride type polyimides；
The polyacrylate is polymethyl acrylate, polyethyl acrylate, butyl polyacrylate, poly-methyl methacrylate
At least one of ester, polyethyl methacrylate, polybutyl methacrylate；
It is described it is polyamide-based for nylon 6, nylon66 fiber, nylon 11, nylon 12, nylon 610, nylon 612, nylon 1010, nylon 46,
At least one of nylon 7, nylon 9, nylon 13, nylon 61, nylon 9 T.
5. the multifunctional unit combination electrode slurry of the polymer according to claim 1 containing active carbonyl group, it is characterised in that:
Wherein, the molecular weight of the active carbonyl group polymer is 200~5000000.
6. the multifunctional unit combination electrode slurry of the polymer according to claim 1 containing active carbonyl group, it is characterised in that:
Wherein, the electrode active material be positive electrode active materials or negative electrode active material,
Also, positive electrode active materials are LiFePO4, lithium nickelate, LiMn2O4, cobalt acid lithium, nickel cobalt aluminium ternary, nickel-cobalt-manganese ternary material
Any one in material,
Negative electrode active material is artificial graphite, natural graphite, lithium titanate, any one in silicon-carbon cathode material.
7. the multifunctional unit combination electrode slurry of the polymer according to claim 1 containing active carbonyl group, it is characterised in that:
Wherein, the conductive additive is at least one of carbon black, acetylene black, carbon nanotube, graphene, carbon fibre material.
8. the method for the multifunctional unit combination electrode slurry of preparation polymer containing active carbonyl group according to claim 1,
It is characterized by:
Wherein, the viscosity of the electrode slurry is 3000~12000mPas.
9. a kind of multifunctional unit for preparing the polymer containing active carbonyl group as claimed in any of claims 1 to 8 in one of claims is compound
The method of electrode slurry, it is characterised in that:
Using electrode active material, conductive additive and active carbonyl group polymer as raw material, or by electrode active material, conduction
Additive, active carbonyl group polymer, binder or/and stabilizer are mixed and stirred for uniformly as raw material in solvent, consolidate
The electrode slurry that content is 45%~60%,
Wherein, in the solid phase components of the electrode slurry, the mass fraction of electrode active material is 90%~95%, and conduction adds
The mass fraction for adding agent is 0.5%~5%, and the mass fraction of active carbonyl group polymer is 0.5%~12%, the quality of binder
Score is 0%~10%, and stabilizer mass fraction is 0%~2%.
10. the method for the multifunctional unit combination electrode slurry of preparation polymer containing active carbonyl group according to claim 9,
It is characterized by:
Wherein, the solvent is N-Methyl pyrrolidone, n,N-Dimethylformamide, water, any one in isopropanol.
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| CN112221478A (en) * | 2020-10-09 | 2021-01-15 | 哈尔滨工程大学 | Graphene oil-absorbing fiber with efficient oil-water separation performance and preparation method thereof |
| CN115216245A (en) * | 2021-04-15 | 2022-10-21 | 恒大新能源技术(深圳)有限公司 | Binder, battery pole piece, preparation method of battery pole piece and secondary battery |
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