CN108807814A - Diaphragm for lithium ion battery - Google Patents
Diaphragm for lithium ion battery Download PDFInfo
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- CN108807814A CN108807814A CN201810560465.0A CN201810560465A CN108807814A CN 108807814 A CN108807814 A CN 108807814A CN 201810560465 A CN201810560465 A CN 201810560465A CN 108807814 A CN108807814 A CN 108807814A
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- Prior art keywords
- lithium
- lithium ion
- coating
- ion battery
- slurry
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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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/409—Separators, membranes or diaphragms characterised by the material
- H01M50/411—Organic material
-
- 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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/409—Separators, membranes or diaphragms characterised by the material
- H01M50/449—Separators, membranes or diaphragms characterised by the material having a layered structure
-
- 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
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Battery Electrode And Active Subsutance (AREA)
- Cell Separators (AREA)
- Secondary Cells (AREA)
Abstract
The diaphragm for lithium ion battery of the present invention, diaphragm include：Basement membrane and coating, basement membrane single side or two-sided upper be 1-6 μm coated with thickness and lead lithium coating, the material for leading lithium coating is by accounting for weight ratio 1-3% polymer at 40 DEG C -50 DEG C, 1-3% nano-lithium ion conductors, the slurry of 93-97% solvents and 0.5-1.5% pore creating materials composition, the slurry be uniformly mixed at a temperature of 40 DEG C to 50 DEG C and be coated in basement membrane single side or it is two-sided on, in the environment of humidity is 35-45%, temperature is to dry the slurry at 70-100 DEG C, so that the slurry is formed on basement membrane leads lithium coating, this leads the glass transition temperature of lithium coating at 300 DEG C or more, heat decomposition temperature reaches 550 DEG C or more, leading lithium coating has the function of lithium ion conduction and electronic isolation function, so that the high temperature resistance of lithium ion battery is improved.
Description
Technical field
The present invention relates to technical field of lithium ion, and in particular to a kind of diaphragm for lithium ion battery, the lithium from
Sub- battery security height, long lifespan.
Background technology
The explosion on fire of lithium ion battery and capacity attenuation always need the technical bottleneck broken through.Explosion on fire is common
The reason is that caused by Li dendrite or foreign particles puncture diaphragm cause internal short-circuit.High schoolmate is in its patent《A kind of lithium-ion electric
Pond pore-creating ceramics isolation film and preparation method thereof》(application number：CN201310391112.X in), proposition is coated in inorganic ceramic
Anti-puncture ability is improved on basic diaphragm, to improve the safety of battery.But ceramic particle can be because bonding loosely takes off
It falls, not only reduces safety protection function, but also reduce production efficiency, the particle to descend slowly and lightly also polluted production environment, affect people
Member's health.In addition, inorganic ceramic functions only as mechanical iris action physically, it is helpless to lithium ion transport.
Capacity attenuation in lithium ion battery charge and discharge process, often caused by free state Li+It participates in being formed more and more
Solid electrolyte interface layer (Solid Polymer Interface, SEI) and the conductive capability for reducing electrolyte.《Lithium battery
Diaphragm coating, diaphragm and diaphragm preparation method》(application number：CN201710194090.6), propose to contain in membrane surface coating
The slurry of lithium titanium compound, as supplement lithium source.But Li-Ti oxide has certain electron conduction, coating, which has, to be made
At the hidden danger of battery plus-negative plate pole piece short circuit, from the principle this material with electron conduction be not suitable for using battery every
On film.
《A kind of two-layer compound diaphragm cell and its mend lithium method》(application number：CN201710949412.3), propose to work as lithium
Li during ion battery charge and discharge cycles+It, can metal in the battery is lithium to be mended by pre-setting when amount is reduced
It fills.But this benefit lithium mode reduces battery energy density, and lithium metal is present in battery the safety for being easy to cause battery
Hidden danger.
Invention content
The purpose of the present application is to solve the diaphragm of existing lithium ion battery to be easy to cause short circuit and lead to lithium ion
The short disadvantage of battery life, and a kind of diaphragm for lithium ion battery is provided, which enhances intensity, improves inside battery
The ability of resistance to shorting and being folded without breaking, and lithium can be mended to extend the cycle life of battery.
In order to achieve the goal above, the technical solution adopted in the present invention is：
A kind of diaphragm for lithium ion battery of the present invention, lithium ion battery include：Anode pole piece, diaphragm and cathode pole
Piece, between anode pole piece and cathode pole piece, diaphragm includes diaphragm：Basement membrane and coating, coating be coated in basement membrane single side or
On person is two-sided, wherein：The coating is that thickness leads lithium coating for 1-6 μm, which is by 40 DEG C -50 DEG C
Account for the slurry of weight ratio 1-3% polymer, 1-3% nano-lithium ions conductor, 93-97% solvents and 0.5-1.5% pore creating materials composition
Material, the slurry be uniformly mixed at a temperature of 40 DEG C to 50 DEG C and be coated in basement membrane (2) single side or it is two-sided on, be in humidity
In the environment of 35-45%, temperature be 70-100 DEG C at dry the slurry so that the slurry forms on basement membrane and leads lithium coating,
Phenyl-diformyl between middle polymer is poly(p-phenylene terephthalamide) (poly-p-phenylene terephthamide) or is poly-
One or two kinds of combination in m-phenylene diamine (MPD) (MPIA (poly-m-phenyleneisophthalamide)), nanometer lithium from
Sub- conductor is the graphene with lithium alkylide (Li-R) functional group, and solvent is hexamethyl phosphoramide, dimethylacetylamide, N- methyl
One kind in pyrrolidones and tetramethylurea or arbitrary several combination；Pore creating material is diethyl carbonate, dimethyl carbonate and carbon
One or more arbitrary combinations in sour methyl ethyl ester, this leads the glass transition temperature of lithium coating at 300 DEG C or more, heat decomposition temperature
Reach 550 DEG C or more, leading lithium coating has the function of lithium ion conduction and electronic isolation function so that the high temperature resistant of lithium ion battery
Performance is improved；
A kind of diaphragm for lithium ion battery of the present invention, wherein：The Li elements of the nano-lithium ion conductor contain 20-
100ppm；
A kind of diaphragm for lithium ion battery of the present invention, wherein：It is described that lead lithium coating poly- to benzene by accounting for weight ratio 2%
Two formyl p-phenylenediamine (poly-p-phenylene terephthamide), 2% stone with lithium alkylide (Li-R) functional group
The slurry of black alkene, 95% hexamethyl phosphoramide and 1% diethyl carbonate composition；
A kind of diaphragm for lithium ion battery of the present invention, wherein：The material for leading lithium coating is by accounting for weight ratio 3%
Poly (MPIA (poly-m-phenyleneisophthalamide)), 1.5% carry lithium alkylide
(Li-R) graphene of functional group, the mixture of 94% dimethylacetylamide and N-Methyl pyrrolidone and 1.5% carbonic acid diformazan
The slurry of ester composition；
A kind of diaphragm for lithium ion battery of the present invention, wherein：The material for leading lithium coating is by accounting for weight ratio
1.5% poly (MPIA (poly-m-phenyleneisophthalamide)), 2.0% carry alkyl
The graphene of lithium (Li-R) functional group, the mixture of 96% hexamethyl phosphoramide and N-Methyl pyrrolidone and 0.5% carbonic acid first
The slurry of ethyl ester composition；
A kind of diaphragm for lithium ion battery of the present invention, wherein：The material for leading lithium coating is by accounting for weight ratio
2.0% poly(p-phenylene terephthalamide) (poly-p-phenylene terephthamide), 2.0% carry lithium alkylide (Li-
R) graphene of functional group, the mixture of 95% tetramethylurea and N-Methyl pyrrolidone and 1.0% diethyl carbonate and carbon
The slurry of the mixture composition of dimethyl phthalate；
A kind of diaphragm for lithium ion battery of the present invention, wherein：The solid content of the slurry is 2-7%；
A kind of diaphragm for lithium ion battery of the present invention, wherein：The basement membrane is polyethylene (PE), polypropylene
(PP), any one in polyamide (PA), polytetrafluoroethylene (PTFE) (PTFE), polyvinylidene fluoride (PVDF) or polyvinyl chloride (PVC)
Kind；
A kind of diaphragm for lithium ion battery of the present invention, wherein：By intaglio press by the slurry equably
It is formed on two-sided or single side coated in basement membrane and leads lithium coating, which is 2-3 μm；
A kind of diaphragm for lithium ion battery of the present invention, wherein：The specific strength for leading lithium coating not less than 28 grams/
Denier.
Beneficial effects of the present invention：
Lithium ion conductor can be both adhered on basement membrane by the polymer used in the present invention as binder, can also be utilized
Itself excellent intensity is as protective layer, isolation inside battery positive and negative anodes short circuit, to improve safety.
Nano-lithium ion conductive particles in the present invention, conducting lithium ions, non-conducting electronics are highly suitable for conduct
The coating of lithium battery, has prevented the internal short-circuit of battery caused because of electronic conduction.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram of lithium ion battery；
Fig. 2 is the structural schematic diagram of another lithium ion battery.
In fig. 1 and 2, label 1 is anode pole piece；Label 2 is basement membrane；Label 3 is cathode pole piece；Label 4 is coating.
Specific implementation mode
As depicted in figs. 1 and 2, lithium ion battery of the invention includes：Anode pole piece 1, diaphragm 2 and cathode pole piece 3, diaphragm
Between anode pole piece 1 and cathode pole piece 3, diaphragm includes：Basement membrane 2 and coating 4, coating 4 be coated in basement membrane 2 single side or
On two-sided, basement membrane 2 is polyethylene (PE), polypropylene (PP), polyamide (PA), polytetrafluoroethylene (PTFE) (PTFE), polyvinylidene fluoride
(PVDF) any one or in polyvinyl chloride (PVC).Coating 4 is that thickness leads lithium coating for 1-6 μm, its thickness is preferably 2-
3μm.The material for leading lithium coating 4 be by accounting for weight ratio 1-3% polymer at 40 DEG C -50 DEG C, 1-3% nano-lithium ions are led
The solid content of the slurry of body, 93-97% solvents and 0.5-1.5% pore creating materials composition, slurry is 2-7%, and the slurry is at 40 DEG C
At a temperature of to 50 DEG C be uniformly mixed and coated in basement membrane 2 single side or it is two-sided on, humidity be 35-45% in the environment of, temperature
Degree is to dry the slurry at 70-100 DEG C so that the slurry forms on basement membrane 2 and leads lithium coating, this leads the specific strength of lithium coating not
Less than 28 g deniers.Wherein polymer is poly(p-phenylene terephthalamide) (poly-p-phenylene terephthamide)
Or it is one or two kinds of in poly MPIA (poly-m-phenyleneisophthalamide)
Combination, nano-lithium ion conductor are the graphenes with lithium alkylide Li-R functional groups, its Li constituent contents are 20-100ppm.
Solvent is one kind or arbitrary several in hexamethyl phosphoramide, dimethylacetylamide, N-Methyl pyrrolidone and tetramethylurea
Combination；Pore creating material is one or more arbitrary combinations in diethyl carbonate, dimethyl carbonate and methyl ethyl carbonate, this leads lithium
For coated glass temperature at 300 DEG C or more, heat decomposition temperature reaches 550 DEG C or more, and leading lithium coating has the function of lithium ion conduction
With electronic isolation function so that the high temperature resistance of lithium ion battery is improved.
Embodiment 1
At 40 DEG C, 2% poly(p-phenylene terephthalamide) (poly-p-phenylene of weight ratio will be accounted for
Terephthamide), 2% graphene with lithium alkylide Li-R functional groups and 1% diethyl carbonate are added to 95% hexamethyl
In phosphinylidyne amine solvent, the Li constituent contents of the graphene with lithium alkylide Li-R functional groups are 50ppm.In the environment of isolation dust
Under, above-mentioned slurry is uniformly mixed in double planetary mixer and obtains stable slurry, then, using intaglio press by above-mentioned slurry
Be uniformly coated on basement membrane 2 it is two-sided on, dried in the case where relative ambient humidity is 35% and temperature is 70 DEG C so that the slurry exists
It is formed on basement membrane 2 and leads lithium coating, which is 35 g deniers, its glass transition temperature is 350 DEG C, thermal decomposition temperature
Degree reaches 580 DEG C, and the service life of formed lithium ion battery is 1.3 times of the existing lithium ion battery service life.
Embodiment 2
At 42 DEG C, 3% poly MPIA (poly-m- of weight ratio will be accounted for
Phenyleneisophthalamide), 1.5% graphene with lithium alkylide Li-R functional groups and 1.5% dimethyl carbonate add
Enter to 94% dimethylacetylamide and N-Methyl pyrrolidone admixture solvent in, carry lithium alkylide Li-R functional groups stone
The Li constituent contents of black alkene are 80ppm.In the environment of dust is isolated, above-mentioned slurry is uniformly mixed in double planetary mixer
To stable slurry, then, above-mentioned slurry is uniformly coated on the single side of basement membrane 2 using intaglio press, in versus environmental
Humidity is 38% and temperature is to be dried at 80 DEG C so that the slurry forms on basement membrane 2 and leads lithium coating, and the ratio for leading lithium coating is strong
Degree is 39 g deniers, its glass transition temperature is 340 DEG C, and heat decomposition temperature reaches 590 DEG C, and the service life of formed lithium ion battery is
1.6 times of existing lithium ion battery service life.
Embodiment 3
At 45 DEG C, 1.5% poly MPIA (poly-m- of weight ratio will be accounted for
Phenyleneisophthalamide), 2.0% graphene with lithium alkylide Li-R functional groups and 0.5% methyl ethyl carbonate add
Enter to 96% hexamethyl phosphoramide and the in the mixed solvent of N-Methyl pyrrolidone, carries the graphite of lithium alkylide Li-R functional groups
The Li constituent contents of alkene are 60ppm.In the environment of dust is isolated, above-mentioned slurry is uniformly mixed in double planetary mixer and obtains
Stable slurry, then, using intaglio press by above-mentioned slurry be uniformly coated on basement membrane 2 it is two-sided on, it is wet in versus environmental
Degree is 35% and temperature is to be dried at 90 DEG C so that the slurry forms on basement membrane 2 and leads lithium coating, this leads the specific strength of lithium coating
For 42 g deniers, its glass transition temperature is 375 DEG C, and heat decomposition temperature reaches 583 DEG C, and the service life of formed lithium ion battery is existing
There are 1.8 times of lithium ion battery service life.
Embodiment 4
At 48 DEG C, 2.0% poly(p-phenylene terephthalamide) poly-p-phenylene of weight ratio will be accounted for
Terephthamide, 2.0% graphene with lithium alkylide Li-R functional groups and 1.0% diethyl carbonate and dimethyl carbonate
Mixture be added to the in the mixed solvent of 95% tetramethylurea and N-Methyl pyrrolidone, with lithium alkylide Li-R functional groups
The Li constituent contents of graphene are 40ppm.In the environment of dust is isolated, above-mentioned slurry is uniformly mixed in double planetary mixer
Obtain stable slurry, then, using intaglio press by above-mentioned slurry be uniformly coated on basement membrane 2 it is two-sided on, in opposite ring
Border humidity is 31% and temperature is to be dried at 85 DEG C so that the slurry forms on basement membrane 2 and leads lithium coating, this leads the ratio of lithium coating
Intensity is 43 g deniers, its glass transition temperature is 355 DEG C, and heat decomposition temperature reaches 598 DEG C, the service life of formed lithium ion battery
It is 2.0 times of the existing lithium ion battery service life.
Embodiment described above is only that the preferred embodiment of the present invention is described, not to the model of the present invention
It encloses and is defined, under the premise of not departing from design spirit of the present invention, technical side of the those of ordinary skill in the art to the present invention
The various modifications and improvement that case is made should all be fallen into the protection domain of claims of the present invention determination.
Claims (10)
1. a kind of diaphragm for lithium ion battery, lithium ion battery include：Anode pole piece (1), diaphragm and cathode pole piece (3),
Diaphragm is located between anode pole piece (1) and cathode pole piece (3), and diaphragm includes：Basement membrane (2) and coating (4), coating (4) are coated in
The single side of basement membrane (2) or it is two-sided on, it is characterised in that：The coating (4) is that thickness leads lithium coating for 1-6 μm, this leads lithium painting
The material of layer is by accounting for weight ratio 1-3% polymer, 1-3% nano-lithium ions conductor, 93-97% solvents at 40 DEG C -50 DEG C
With the slurry of 0.5-1.5% pore creating materials composition, which is uniformly mixed at a temperature of 40 DEG C to 50 DEG C and is coated in basement membrane (2)
Single side or it is two-sided on, in the environment of humidity is 35-45%, temperature the slurry is dried at being 70-100 DEG C so that the slurry
It is formed on basement membrane (2) and leads lithium coating, wherein polymer is poly(p-phenylene terephthalamide) (poly-p-phenylene
Terephthamide) or in poly (MPIA (poly-m-phenyleneisophthalamide))
One or two kinds of combination；Nano-lithium ion conductor is the graphene with lithium alkylide (Li-R) functional group；Solvent is six
One kind in methyl phosphamide, dimethylacetylamide, N-Methyl pyrrolidone and tetramethylurea or arbitrary several combination；Pore-creating
Agent is one or more arbitrary combinations in diethyl carbonate, dimethyl carbonate and methyl ethyl carbonate, this leads the glass of lithium coating
For glass temperature at 300 DEG C or more, heat decomposition temperature reaches 550 DEG C or more, and leading lithium coating has the function of lithium ion conduction and electronics
Insulation function so that the high temperature resistance of lithium ion battery is improved.
2. the diaphragm according to claim 1 for lithium ion battery, it is characterised in that：The nano-lithium ion conductor
Li constituent contents are 20-100ppm.
3. the diaphragm according to claim 2 for lithium ion battery, it is characterised in that：The material for leading lithium coating by
2% poly(p-phenylene terephthalamide) of weight ratio (poly-p-phenylene terephthamide), 2% are accounted for lithium alkylide
(Li-R) slurry of the graphene of functional group, 95% hexamethyl phosphoramide and 1% diethyl carbonate composition.
4. the diaphragm according to claim 2 for lithium ion battery, it is characterised in that：The material for leading lithium coating by
Account for 3% poly of weight ratio (MPIA (poly-m-phenyleneisophthalamide)), 1.5% band
There are the graphene of lithium alkylide (Li-R) functional group, the mixture and 1.5% of 94% dimethylacetylamide and N-Methyl pyrrolidone
The slurry of dimethyl carbonate composition.
5. the diaphragm according to claim 2 for lithium ion battery, it is characterised in that：The material for leading lithium coating
By account for 1.5% poly of weight ratio (MPIA (poly-m-phenyleneisophthalamide)),
2.0% carries the mixture of the graphene of lithium alkylide (Li-R) functional group, 96% hexamethyl phosphoramide and N-Methyl pyrrolidone
With the slurry of 0.5% methyl ethyl carbonate composition.
6. the diaphragm according to claim 2 for lithium ion battery, it is characterised in that：The material for leading lithium coating by
2.0% poly(p-phenylene terephthalamide) of weight ratio (poly-p-phenylene terephthamide), 2.0% are accounted for alkane
The graphene of base lithium (Li-R) functional group, the mixture of 95% tetramethylurea and N-Methyl pyrrolidone and 1.0% carbonic acid two
The slurry of the mixture of ethyl ester and dimethyl carbonate composition.
7. the diaphragm for lithium ion battery according to claim 3 to 6 any claim, it is characterised in that：It is described
The solid content of slurry is 2-7%.
8. the diaphragm according to claim 7 for lithium ion battery, it is characterised in that：The basement membrane (2) is polyethylene
(PE), polypropylene (PP), polyamide (PA), polytetrafluoroethylene (PTFE) (PTFE), polyvinylidene fluoride (PVDF) or polyvinyl chloride (PVC)
In any one.
9. the diaphragm according to claim 8 for lithium ion battery, it is characterised in that：It will be described by intaglio press
Slurry, which is uniformly coated on to be formed on the two-sided or single side of basement membrane (2), leads lithium coating, and the thickness for leading lithium coating is 2-5 μm.
10. the diaphragm according to claim 9 for lithium ion battery, it is characterised in that：The ratio for leading lithium coating is strong
Degree is not less than 28 g deniers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810560465.0A CN108807814B (en) | 2018-06-04 | 2018-06-04 | Separator for lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810560465.0A CN108807814B (en) | 2018-06-04 | 2018-06-04 | Separator for lithium ion battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108807814A true CN108807814A (en) | 2018-11-13 |
| CN108807814B CN108807814B (en) | 2020-12-29 |
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ID=64090096
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810560465.0A Active CN108807814B (en) | 2018-06-04 | 2018-06-04 | Separator for lithium ion battery |
Country Status (1)
| Country | Link |
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| CN (1) | CN108807814B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109786623A (en) * | 2018-12-29 | 2019-05-21 | 深圳中兴新材技术股份有限公司 | Improve the method and polymer coating diaphragm of polymer coating diaphragm ionic conductivity |
| CN110416476A (en) * | 2019-07-15 | 2019-11-05 | 河北金力新能源科技股份有限公司 | A kind of high conductance slurry and its preparation method and application, lithium battery diaphragm and lithium battery |
| CN113471412A (en) * | 2020-03-31 | 2021-10-01 | 北京卫蓝新能源科技有限公司 | Composite conductive slurry, preparation method, positive pole piece and lithium ion battery |
| CN114927827A (en) * | 2022-05-27 | 2022-08-19 | 山东海科创新研究院有限公司 | Composite diaphragm for lithium-selenium battery, preparation method of composite diaphragm and lithium-selenium battery |
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| CN103788556A (en) * | 2014-01-26 | 2014-05-14 | 中国科学院长春应用化学研究所 | Graphene-based polymer composite material and preparation method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109786623A (en) * | 2018-12-29 | 2019-05-21 | 深圳中兴新材技术股份有限公司 | Improve the method and polymer coating diaphragm of polymer coating diaphragm ionic conductivity |
| CN110416476A (en) * | 2019-07-15 | 2019-11-05 | 河北金力新能源科技股份有限公司 | A kind of high conductance slurry and its preparation method and application, lithium battery diaphragm and lithium battery |
| CN113471412A (en) * | 2020-03-31 | 2021-10-01 | 北京卫蓝新能源科技有限公司 | Composite conductive slurry, preparation method, positive pole piece and lithium ion battery |
| CN114927827A (en) * | 2022-05-27 | 2022-08-19 | 山东海科创新研究院有限公司 | Composite diaphragm for lithium-selenium battery, preparation method of composite diaphragm and lithium-selenium battery |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108807814B (en) | 2020-12-29 |
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