CN109360939A - A kind of flexibility of lithium ion battery is without collector thin film pole piece preparation method - Google Patents
A kind of flexibility of lithium ion battery is without collector thin film pole piece preparation method Download PDFInfo
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- CN109360939A CN109360939A CN201811071209.1A CN201811071209A CN109360939A CN 109360939 A CN109360939 A CN 109360939A CN 201811071209 A CN201811071209 A CN 201811071209A CN 109360939 A CN109360939 A CN 109360939A
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- pole piece
- thin film
- ion battery
- lithium ion
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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
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/139—Processes of manufacture
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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
-
- 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
Abstract
The present invention provides a kind of the flexible without collector thin film pole piece preparation method of lithium ion battery, the invention the preparation method is as follows: firstly, active material, conductive agent, binder and solvent are uniformly mixed, be prepared into slurry；Then, slurry is uniformly coated in the sapphire substrate surface of smooth hydrophobic to form continuous film, is dried；Secondly, by dry and be coated with film Sapphire Substrate impregnate in deionized water, adopt makes film fall off from sapphire substrate surface with machinery method；Finally, being picked up the film to fall off from water using copper mesh, flexibility is can be obtained without collector thin film pole piece in drying.This method be prepared it is flexible without collector thin film pole piece can self-supporting, there is good mechanical strength and flexibility.Present invention process is simple controllably, preparation cost is low, and performance boost is significantly reliable, and the flexibility of preparation shows superior chemical property without collector thin film pole piece.
Description
Technical field
The present invention relates to flexible lithium ion battery technical field is related to, it is specifically related to a kind of flexibility of lithium ion battery
Without collector thin film pole piece preparation method.
Background technique
Lithium ion battery due to energy density is high, self discharge is small, have extended cycle life, safety is good, it is pollution-free, can quickly fill
The advantages that electric discharge, makes it be widely used in fields such as electronic equipment, digital product, electric car and energy stores.
In recent years, in particular with the continuous development of electronic technology, electronic equipment is just sent out towards miniaturization, portable and wearable direction
Exhibition.In order to meet the miniaturization of electronic equipment, portable and wearable demand, developing flexible device has been trend of the times.It is flexible
The realization of device, vital link are the flexibilities of battery.Therefore, it develops a kind of with high-energy density and with excellent
Good lithium ion battery flexible has become one of current field of lithium ion battery research hotspot.
Common lithium ion battery is mainly by anode pole piece, cathode pole piece, diaphragm, electrolyte, tab and outer packing group
At.Currently, positive and negative electrode pole piece is prepared generally by active material is coated uniformly in a form of slurry in metal collector
It obtains, wherein anode pole piece is using metal aluminum foil as collector, and cathode pole piece is using metal copper foil as collector.Using this
The positive and negative electrode pole piece that method obtains, not only metal collector quality is larger, causes battery energy density low, and flexible very poor,
Adhesion strength between metal collector and active material is weak, and after bending is repeated several times, active material is easily from metal collector
On fall off, cause device service life decline.Therefore, it is limited in flexible device by the battery that conventional method prepares
In application.
There is more preferable battery flexible in order to obtain, researcher proposes many preparation methods in this regard.To current
Until, the flexible battery preparation method having been reported both at home and abroad is concentrated mainly on the following aspects: [document 1:Kretschmer
K et al.Green Chemistry, 2016,18 (9): 2691-2698；Document 2:Song J Y et
Al.Nanomaterials, 2018,8 (2): 90；Document 3:Gao P.ACS applied materials&interfaces,
2018,10 (4): 3938-47；Document 4:Li N.Proceedings of the National Academy of
Sciences, 2012,109 (43): 17360-17365], that is, utilize the high flexible materials such as carbon paper, carbon cloth, textile, graphene
As conductive current collector, electrode plates purpose flexible is improved to reach.Although these methods make great progress,
Generally existing some problems: electrode plates in the preparation, are needed using vacuum filtration technique, this preparation process complexity, at
This height takes a long time, and is not suitable for large-scale production；Although in addition, utilizing the high flexibilities material such as carbon paper, carbon cloth, textile, graphene
Expect substituted metal collector, improves the flexibility of battery, but collector still occupies battery portion quality, reduces to a certain extent
The energy density of battery.Therefore, the flexible electrode pole piece with high-energy density how is effectively prepared, is flexible lithium ion battery
One problem of field urgent need to resolve.
Summary of the invention
The invention proposes a kind of flexibilities of lithium ion battery without collector thin film pole piece preparation method, the preparation method
First by the Sapphire Substrate of smooth hydrophobic, active material is coated in its surface in a form of slurry, is then impregnated
In deionized water, the flexibility of lithium ion battery is prepared without collector thin film pole piece using mechanically decoupled method.By adopting
It can solve that electrode plates in the prior art are flexible poor, and energy density is low with above-mentioned preparation method, preparation process complexity, cost
The technical problems such as height and afflux weight are big.
In order to solve the above technical problems, the present invention provides a kind of flexibilities of lithium ion battery without collector thin film pole piece
Preparation method, the method includes the steps of: step 1, active material, conductive agent, binder and solvent uniformly being mixed, prepared
At slurry；Step 2, slurry is uniformly coated in the sapphire substrate surface of smooth hydrophobic to form continuous film, is dried；
Step 3, by dry and be coated with film Sapphire Substrate impregnate in deionized water, adopt makes film from indigo plant with machinery method
Jewel substrate surface falls off；Step 4, the film to fall off is picked up from water using copper mesh, flexible nothing can be obtained in vacuum drying
Collector thin film pole piece.
More preferably, the active material in the step 1 be lithium silion cell electrode material, lithium sulphur battery electrode material or lithium from
One of sub- battery electrode material.
More preferably, the lithium silion cell electrode material is in nano-silicon, silicon-base alloy, silicon substrate oxidation or Si-C composite material
One kind；The lithium sulphur battery electrode material is one in elemental sulfur, lithium sulfide, sulfide or sulfide and carbon composite
Kind.
More preferably, the lithium ion battery electrode material is LiFePO4, cobalt acid lithium, LiMn2O4, lithium manganese phosphate, vanadium phosphate
One of lithium, nickel ion doped, nickel cobalt manganese and nickel cobalt aluminium ternary material, lithium titanate, natural or artificial graphite.
More preferably, the conductive agent in the step 1 be conductive black, acetylene black, graphene, carbon nanotube, hollow carbon sphere,
One of Super P, Super S, porous carbon or carbon fiber are a variety of.
More preferably, the binder in the step 1 is polyacrylic acid, Kynoar, polytetrafluoroethylene (PTFE), carboxymethyl cellulose
One of plain sodium or polyvinyl alcohol；The solvent is deionized water, N- methyl adjoins pyrrolidone, isopropanol, dimethylbenzene, acetic acid second
One of vinegar or n,N-Dimethylformamide.
More preferably, the mass ratio of the active material in the step 1, conductive agent and binder is (6~9): (0.5
~3): (0.5~2)；The uniform mixing method is one of grinding or ball milling and its mixing time is 0.5h~5h.
More preferably, the slurry coating thickness in the step 2 is 10 μm~300 μm；The surface of the Sapphire Substrate is thick
Rugosity is 0.1nm~5nm；The diameter of the Sapphire Substrate is 25.4mm~152.4mm.
More preferably, the soaking time in the step 3 is 0.5h~3h.
More preferably, the vacuum degree of vacuum drying is 1.0 × 10 in the step 4-4Pa~1.0Pa, temperature are 40 DEG C~70
DEG C, the time is 2h~10h.
Compared with the prior art, the beneficial effects of the present invention are:
1, the lithium ion battery flexibility prepared by the present invention without collector thin film pole piece without metal collector, this
Sample can substantially mitigate the quality of battery, and battery is made to have higher energy density.
2, lithium ion battery prepared by the present invention it is flexible without collector thin film pole piece not only can self-supporting, have very well
Mechanical strength and flexibility, suitable for the building of flexible battery, and multi-disc can be superimposed using monolithic or simultaneously as electrode.
3, this hair prepare bright lithium ion battery the flexible preparation process without collector thin film pole piece it is simply controllable, repeat
Property it is good, it is at low cost, it is time-consuming short, be suitable for industrial mass production.
4, lithium ion battery prepared by the present invention is flexible without collector thin film pole piece, with higher battery capacity,
Better high rate performance and cycle performance and better practical value.
Detailed description of the invention
Fig. 1 is the flexible digital photograph figure without collector thin film pole piece of lithium ion battery prepared by embodiment 3.
Fig. 2 is the flexible stress/strain curves figure without collector thin film pole piece of lithium ion battery prepared by embodiment 3.
Fig. 3 is the flexible pole piece without collector thin film pole piece and comparative example preparation of lithium ion battery prepared by embodiment 3
It is assembled into the first charge-discharge curve comparison figure of button cell respectively.
Fig. 4 is the flexible pole piece without collector thin film pole piece and comparative example preparation of lithium ion battery prepared by embodiment 3
It is assembled into the curve of double curvature comparison diagram of button cell respectively.
Fig. 5 is the flexible pole piece without collector thin film pole piece and comparative example preparation of lithium ion battery prepared by embodiment 3
It is assembled into 500 circulation specific discharge capacity curve comparison figures of button cell respectively.
Specific embodiment
The present invention is further described with preferred embodiment with reference to the accompanying drawing.
Embodiment 1
For a kind of flexibility of lithium ion battery without collector thin film pole piece, raw material includes: 7 parts of ferric phosphates in mass ratio
Lithium, 2 parts of conductive blacks, 1 part of Kynoar.Preparation method of the flexibility without collector thin film pole piece is the following steps are included: step
Rapid 1, weigh 7 parts of LiFePO4s, 2 parts of conductive blacks, 1 part of Kynoar in mass ratio, three poured into ball grinder, then to
4ml N-Methyl pyrrolidone is added in ball grinder, obtains mixed slurry after ball milling 4h；Step 2, mixed slurry is uniformly coated
In the sapphire substrate surface for the smooth hydrophobic that diameter is 50.8mm, continuous film, 30 DEG C of drying are formed；Step 3, it will dry
And be coated with film Sapphire Substrate impregnate in deionized water, soaking time 1h, benefit make with machinery method film from
Sapphire substrate surface falls off；Step 4, the film to fall off is picked up using copper mesh, after drying 6h under the conditions of 0.1Pa, 40 DEG C
Flexibility is obtained without collector thin film pole piece.
It is manufactured in the present embodiment it is flexible without collector thin film pole piece not only can self-supporting, flexible, energy density is high, and
High rate performance and good cycle.
Embodiment 2
For a kind of flexibility of lithium ion battery without collector thin film pole piece, raw material includes: 7 parts of nickel cobalt mangaic acids in mass ratio
Lithium, 2 parts of acetylene blacks, 1 part of Kynoar.Preparation method of the flexibility without collector thin film pole piece is the following steps are included: step
1,7 parts of nickle cobalt lithium manganates, 2 parts of acetylene blacks, 1 part of Kynoar are weighed in mass ratio, three are poured into ball grinder, then to ball
5ml N-Methyl pyrrolidone is added in grinding jar, obtains mixed slurry after ball milling 3h；Step 2, mixed slurry is coated uniformly on
Diameter is the sapphire substrate surface of the smooth hydrophobic of 50.8mm, forms continuous film, 30 DEG C of drying；Step 3, it will dry simultaneously
Sapphire Substrate coated with film is impregnated in deionized water, and soaking time 2h, benefit makes film from indigo plant with machinery method
Jewel substrate surface falls off；Step 4, the film to fall off is picked up using copper mesh, is obtained after 10h is dried under the conditions of 1.0Pa, 60 DEG C
To flexibility without collector thin film pole piece.
It is manufactured in the present embodiment it is flexible without collector thin film pole piece not only can self-supporting, flexible, energy density is high, battery
Capacity is big, and high rate performance and good cycle.
Embodiment 3
For a kind of flexibility of lithium ion battery without collector thin film pole piece, raw material includes: 8 parts of ferric phosphates in mass ratio
Lithium, 1 part of conductive black, 1 part of Kynoar.Preparation method of the flexibility without collector thin film pole piece is the following steps are included: step
Rapid 1, weigh 8 parts of LiFePO4s, 1 part of conductive black, 1 part of Kynoar in mass ratio, three poured into ball grinder, then to
3ml N-Methyl pyrrolidone is added in ball grinder, obtains mixed slurry after ball milling 4h；Step 2, mixed slurry is uniformly coated
In the sapphire substrate surface for the smooth hydrophobic that diameter is 50.8mm, continuous film, 30 DEG C of drying are formed；Step 3, it will dry
And be coated with film Sapphire Substrate impregnate in deionized water, soaking time 3h, benefit make with machinery method film from
Sapphire substrate surface falls off；Step 4, the film to fall off is picked up using copper mesh, after drying 8h under the conditions of 0.1Pa, 50 DEG C
Flexibility is obtained without collector thin film pole piece.
It is manufactured in the present embodiment it is flexible without collector thin film pole piece not only can self-supporting, flexible, energy density is high, and
High rate performance and good cycle.
Comparative example
A kind of pole piece of button cell, raw material include: in mass ratio 8 parts of LiFePO4s, 1 part of conductive black, 1 part it is poly- inclined
Vinyl fluoride.The preparation method of the pole piece is the following steps are included: step 1, weighs 8 parts of LiFePO4s, 1 part of conductive charcoal in mass ratio
Black, 1 part of Kynoar, pours into ball grinder for three, and 3ml N-Methyl pyrrolidone, ball milling 4h are then added into ball grinder
After obtain mixed slurry；Step 2, mixed slurry is coated uniformly on smooth metal Al foil, forms continuous film,
0.1Pa, thin film pole piece is obtained after drying 8h under the conditions of 50 DEG C.
Fig. 1 is the flexibility of the preparation of embodiment 3 without collector thin film pole piece, and wherein (b)-(e) figure in Fig. 1 is thin film pole piece
Digital photograph figure under differently curved degree.It can be seen from the figure that flexibility prepared by the present invention is without collector thin film pole piece
Can self-supporting, have flexible well.
Fig. 2 is the flexible stress/strain curves figure without collector thin film pole piece prepared by embodiment 3.It can be obtained by Fig. 2,
Flexible breaking strength and elasticity modulus without collector thin film pole piece prepared by embodiment 3 is respectively 0.65MPa and 109.6MPa,
Illustrate that the present invention has good mechanical performance.
It, will in order to further prove that flexibility prepared by the present invention has superior chemical property without collector thin film pole piece
Embodiment 3 and the pole piece of comparative example preparation are assembled into button cell respectively, and carry out electrochemical property test.
The assembling process of button cell is as follows: the pole piece difference of flexible pole piece and comparative example preparation prepared by embodiment 3
The pole piece for being 16mm at diameter with tablet machine drift primary drying, metal Li piece are used as to electrode；In electrolyte, electrolyte is 1mol/L six
Lithium fluophosphate (LiF6P), solvent includes the ethylene carbonate (EC) and methyl carbonate (DMC) that volume ratio is 1: 1, using model
The diaphragm of Celgard2300 is isolated by anode and cathode, and entire assembling process is completed in vacuum glove box.Battery pack installs
Afterwards, it stands for 24 hours, it is to be tested.
Fig. 3 is that the flexible pole piece without collector thin film pole piece and comparative example preparation prepared by embodiment 3 is assembled into button respectively
The first charge-discharge curve comparison figure of formula battery, test electric current are 0.1C.It can be seen from the figure that flexibility nothing prepared by the present invention
The first charge-discharge efficiency of collector thin film pole piece is up to 98%, and specific discharge capacity is up to 156.3mAh/g, is above pair
Ratio (97%&141.99mAh/g@0.1C) illustrates that the present invention has excellent efficiency for charge-discharge and higher battery capacity.
Fig. 4 is that the flexible pole piece without collector thin film pole piece and comparative example preparation prepared by embodiment 3 is assembled into button respectively
The curve of double curvature comparison diagram of formula battery, test electric current is respectively 0.1C, 0.2C, 0.5C, 1C, 2C, 5C and 10C.It can be with from figure
Find out, under entirely test electric current, specific capacity of the flexibility without collector thin film pole piece prepared by the present invention is above comparative example, says
The bright present invention has superior high rate performance and preferable fast charging and discharging ability.
Fig. 5 is that the flexible pole piece without collector thin film pole piece and comparative example preparation prepared by embodiment 3 is assembled into button respectively
500 circulation specific discharge capacity curve comparison figures of formula battery, test electric current are 10C.It can be seen from the figure that prepared by the present invention
Flexibility recycled 500 times at 10C without collector thin film pole piece after specific capacity compared with for the first time almost without decline, 500 times
Battery capacity still keeps 99.99% after circulation, illustrates that the present invention has excellent cycle performance.In addition, as seen from Figure 5,
In entire 500 times circulations, battery capacity of the invention is above comparative example, illustrates that the present invention has again and excellent quickly fills
Discharge capability.
It can be seen that a kind of flexibility of lithium ion battery prepared by the present invention not only may be used without collector thin film pole piece
Self-supporting has good mechanical strength and flexibility, and battery capacity is big, and high rate performance is excellent, good cycle.Meanwhile
Preparation process of the invention is simply controllable, reproducible, at low cost, time-consuming short, is suitable for industrial mass production, has very
Big application prospect.
Claims (10)
1. a kind of flexibility of lithium ion battery is without collector thin film pole piece preparation method, which is characterized in that the preparation method packet
Containing following steps:
Step 1, active material, conductive agent, binder and solvent are uniformly mixed, is prepared into slurry；
Step 2, slurry is uniformly coated in the sapphire substrate surface of smooth hydrophobic to form continuous film, is dried；
Step 3, by dry and be coated with film Sapphire Substrate impregnate in deionized water, adopt makes film with machinery method
It falls off from sapphire substrate surface；
Step 4, the film to fall off is picked up from water using copper mesh, flexibility can be obtained without afflux body thin film pole in vacuum drying
Piece.
2. a kind of lithium ion battery according to claim 1 is flexible without collector thin film pole piece preparation method, special
Sign is: the active material in the step 1 is lithium silion cell electrode material, lithium sulphur battery electrode material or lithium ion battery battery
One of pole material.
3. a kind of lithium ion battery according to claim 2 is flexible without collector thin film pole piece preparation method, special
Sign is: the lithium silion cell electrode material is one of nano-silicon, silicon-base alloy, silicon substrate oxidation or Si-C composite material；
The lithium sulphur battery electrode material is elemental sulfur, lithium sulfide, sulfide or one of sulfide and carbon composite.
4. a kind of lithium ion battery according to claim 2 is flexible without collector thin film pole piece preparation method, special
Sign is: the lithium ion battery electrode material is LiFePO4, cobalt acid lithium, LiMn2O4, lithium manganese phosphate, phosphoric acid vanadium lithium, nickel manganese
One of sour lithium, nickel cobalt manganese and nickel cobalt aluminium ternary material, lithium titanate, natural or artificial graphite.
5. a kind of lithium ion battery according to claim 1 is flexible without collector thin film pole piece preparation method, special
Sign is: conductive agent in the step 1 be conductive black, acetylene black, graphene, carbon nanotube, hollow carbon sphere, Super P,
One of Super S, porous carbon or carbon fiber are a variety of.
6. a kind of lithium ion battery according to claim 1 is flexible without collector thin film pole piece preparation method, special
Sign is: the binder in the step 1 is polyacrylic acid, Kynoar, polytetrafluoroethylene (PTFE), sodium carboxymethylcellulose or poly-
One of vinyl alcohol；The solvent is deionized water, N- methyl adjoins pyrrolidone, isopropanol, dimethylbenzene, acetic acid ethyl ester or N, N-
One of dimethylformamide.
7. a kind of lithium ion battery according to claim 1 is flexible without collector thin film pole piece preparation method, special
Sign is: the mass ratio of active material, conductive agent and binder in the step 1 is (6~9): (0.5~3): (0.5
~2)；The uniform mixing method is one of grinding or ball milling and its mixing time is 0.5h~5h.
8. a kind of lithium ion battery according to claim 1 is flexible without collector thin film pole piece preparation method, special
Sign is: the slurry coating thickness in the step 2 is 10 μm~300 μm；The surface roughness of the Sapphire Substrate is
0.1nm~5nm；The diameter of the Sapphire Substrate is 25.4mm~152.4mm.
9. a kind of lithium ion battery according to claim 1 is flexible without collector thin film pole piece preparation method, special
Sign is: the soaking time in the step 3 is 0.5h~3h.
10. a kind of lithium ion battery flexibility according to claim 1 is without collector thin film pole piece preparation method, feature
: the vacuum degree of vacuum drying is 1.0 × 10 in the step 4-4Pa~1.0Pa, temperature be 40 DEG C~70 DEG C, the time be 2h~
10h。
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110600672A (en) * | 2019-08-07 | 2019-12-20 | 华南师范大学 | Flexible self-supporting three-dimensional porous electrode and preparation method thereof |
| CN110752348A (en) * | 2019-09-11 | 2020-02-04 | 武汉瑞科美新能源有限责任公司 | Method for preparing self-supporting flexible electrode by solvent-nonsolvent method and self-supporting flexible electrode |
| CN111668447A (en) * | 2020-07-11 | 2020-09-15 | 江苏纳能新能源有限公司 | Preparation method of pole piece for button lithium battery/supercapacitor |
| CN111682267A (en) * | 2020-05-14 | 2020-09-18 | 南方科技大学 | Flexible lithium ion battery and preparation method thereof |
| CN111916756A (en) * | 2020-07-31 | 2020-11-10 | 南昌大学 | Flexible film and preparation method and application thereof |
| CN112490416A (en) * | 2020-10-28 | 2021-03-12 | 浙江中科玖源新材料有限公司 | Silicon-carbon composite film, preparation method and application thereof, and lithium ion battery |
| CN113451545A (en) * | 2020-03-24 | 2021-09-28 | 北京石墨烯研究院有限公司 | Flexible battery and preparation method thereof |
| CN114695882A (en) * | 2022-05-02 | 2022-07-01 | 蔡梅 | Flexible lithium iron phosphate positive electrode material for bendable electronic equipment and preparation method |
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| CN106159197A (en) * | 2016-09-30 | 2016-11-23 | 上海空间电源研究所 | A kind of integrated flexible membrane electrode and preparation method thereof |
| CN106711401A (en) * | 2016-12-15 | 2017-05-24 | 安徽大学 | Lithium-ion flexible-cell substrate-free positive plate and preparation method |
| CN108390063A (en) * | 2018-01-19 | 2018-08-10 | 同济大学 | Graphene prepares the method and electrode of flexible self-supporting electrode as conductive adhesive |
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| CN106159197A (en) * | 2016-09-30 | 2016-11-23 | 上海空间电源研究所 | A kind of integrated flexible membrane electrode and preparation method thereof |
| CN106711401A (en) * | 2016-12-15 | 2017-05-24 | 安徽大学 | Lithium-ion flexible-cell substrate-free positive plate and preparation method |
| CN108390063A (en) * | 2018-01-19 | 2018-08-10 | 同济大学 | Graphene prepares the method and electrode of flexible self-supporting electrode as conductive adhesive |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110600672A (en) * | 2019-08-07 | 2019-12-20 | 华南师范大学 | Flexible self-supporting three-dimensional porous electrode and preparation method thereof |
| CN110752348A (en) * | 2019-09-11 | 2020-02-04 | 武汉瑞科美新能源有限责任公司 | Method for preparing self-supporting flexible electrode by solvent-nonsolvent method and self-supporting flexible electrode |
| CN113451545A (en) * | 2020-03-24 | 2021-09-28 | 北京石墨烯研究院有限公司 | Flexible battery and preparation method thereof |
| CN111682267A (en) * | 2020-05-14 | 2020-09-18 | 南方科技大学 | Flexible lithium ion battery and preparation method thereof |
| CN111682267B (en) * | 2020-05-14 | 2023-01-31 | 南方科技大学 | Flexible lithium ion battery and preparation method thereof |
| CN111668447A (en) * | 2020-07-11 | 2020-09-15 | 江苏纳能新能源有限公司 | Preparation method of pole piece for button lithium battery/supercapacitor |
| CN111916756A (en) * | 2020-07-31 | 2020-11-10 | 南昌大学 | Flexible film and preparation method and application thereof |
| CN112490416A (en) * | 2020-10-28 | 2021-03-12 | 浙江中科玖源新材料有限公司 | Silicon-carbon composite film, preparation method and application thereof, and lithium ion battery |
| CN114695882A (en) * | 2022-05-02 | 2022-07-01 | 蔡梅 | Flexible lithium iron phosphate positive electrode material for bendable electronic equipment and preparation method |
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Application publication date: 20190219 |