CN113249060A - Preparation method of polyvinylidene fluoride modified by lithium ion battery binder - Google Patents
Preparation method of polyvinylidene fluoride modified by lithium ion battery binder Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J127/00—Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Adhesives based on derivatives of such polymers
- C09J127/02—Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Adhesives based on derivatives of such polymers not modified by chemical after-treatment
- C09J127/12—Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Adhesives based on derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
- C09J127/16—Homopolymers or copolymers of vinylidene fluoride
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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
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- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
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- H01M4/622—Binders being polymers
- H01M4/623—Binders being polymers fluorinated polymers
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- Y02E60/10—Energy storage using batteries
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Abstract
The invention discloses a preparation method of a lithium ion battery binder modified polyvinylidene fluoride, which comprises the steps of adding cobalt nitrate hexahydrate into a methanol solution, carrying out ultrasonic dissolution to obtain a solution A, adding 2-methylimidazole into the methanol solution, carrying out ultrasonic dissolution to obtain a solution B, then pouring the solution A into the solution B, carrying out magnetic stirring for 2-6 h, centrifuging, washing for 2-3 times by using the methanol solution, and carrying out vacuum drying to obtain ZIF-67; adding the ZIF-67 obtained in the step S1 into a solvent, then carrying out ultrasonic treatment until the solution becomes turbid to obtain a suspension, absorbing the upper layer of the suspension, adding the suspension into a polytetrafluoroethylene reaction kettle, then adding polyvinylidene fluoride, placing the suspension in an oven to react at 200-220 ℃ for 1.5-3 h, cooling to room temperature, transferring the mixture into an injection pump, and spinning the mixture into a solid solution; and fishing out the spinning in the solid bath solution, drying in vacuum, placing in a ball mill, carrying out ball milling for 2-3 h, adding ZIF-67 in the step S1, and continuing ball milling for 2-3 h to obtain the binder modified polyvinylidene fluoride.
Description
Technical Field
The invention belongs to the technical field of lithium ion batteries, and particularly relates to a preparation method of polyvinylidene fluoride modified by a lithium ion battery binder.
Background
Lithium ion batteries have been widely used in various digital electronic products because of a series of outstanding advantages such as high energy density, light weight, stable working voltage, long cycle life, high safety performance, and small environmental pollution. The electrode of the lithium ion battery is formed by coating positive and negative electrode materials on the surface of a current collector with a binder. The materials used as binders must therefore have the following main characteristics: 1) bonding the active materials to each other and to the current collector; 2) electrochemical stability, non-reactivity and mutual solubility with electrolytes; 3) the coating film has enough bonding strength when the amount is small, and does not fall off from the current collector to generate cracks; 4) high purity, less impurities and no denaturation at high temperature. Currently, polyvinylidene fluoride is the most widely used binder for lithium ion batteries. However, polyvinylidene fluoride and electrode materials have weak van der waals force, so that electrode particles are easy to fall off, and the specific discharge capacity is attenuated.
Disclosure of Invention
In view of the above problems, the present invention aims to provide a preparation method of a binder modified polyvinylidene fluoride for a lithium ion battery, wherein the preparation method comprises the following steps:
s1: adding cobalt nitrate hexahydrate into a methanol solution, carrying out ultrasonic dissolution to obtain a solution A, adding 2-methylimidazole into the methanol solution, carrying out ultrasonic dissolution to obtain a solution B, then pouring the solution A into the solution B, carrying out magnetic stirring for 2-6 h, centrifuging, washing for 2-3 times by using the methanol solution, and carrying out vacuum drying to obtain the metal organic framework material ZIF-67.
S2: adding the metal organic framework material ZIF-67 obtained in the step S1 into a solvent, then carrying out ultrasonic treatment until the solution becomes turbid to obtain a suspension, absorbing the upper layer of the suspension, adding the suspension into a polytetrafluoroethylene reaction kettle, then adding polyvinylidene fluoride, placing the suspension in an oven to react at 200-220 ℃ for 1.5-3 h, cooling to room temperature, moving the mixture into an injection pump, and spinning the mixture into solid solution.
S3: and fishing out the spinning in the solid bath solution, drying in vacuum, placing in a ball mill, carrying out ball milling for 2-3 h, adding the metal organic framework material ZIF-67 in the step S1, and continuing ball milling for 2-3 h to obtain the binder modified polyvinylidene fluoride.
Further, the mass-volume ratio of the cobalt nitrate hexahydrate to the methanol solution in the solution A is (2.36-3.12) g, (10-20) mL; the mass-volume ratio of the 2-methylimidazole methanol solution in the solution B is (1.23-1.89) g, (10-15) mL.
Further, in the step S1, the centrifugation speed is 9000-12000 r/min and the centrifugation time is 10-15 min.
Further, the solvent in step S2 refers to any one of N, N-dimethylformamide and N, N-dimethylacetamide.
Further, the solid bath solution is an absolute ethyl alcohol solution.
Furthermore, in the step S2, the mass-to-volume ratio of the ZIF-67 to the solvent to the polyvinylidene fluoride is (0.36-0.69) g, (10-25) mL and (2.6-4.2) g.
Further, the mass ratio of the spun yarn obtained in the step S3 and the ZIF-67 obtained in the drying step S2 is (1.2-2.6): (0.25-0.54).
Further, the injection voltage of the electrostatic spinning in the step S2 is 12-15 kV, the injection rate is 0.4-0.5 mL/h, and the injection distance is 13-16 cm.
Has the advantages that: according to the invention, the metal organic framework material ZIF-67 with a two-dimensional layered structure and good conductivity is adopted, the metal organic framework material ZIF-67 is suspended in a solvent through time-up ultrasonic to obtain a suspension, then the suspension is mixed with polyvinylidene fluoride and modified in a high-temperature and high-pressure environment, the spinning solution is obtained through electrostatic spinning, and then the mixture is ground and modified with the ZIF-67, so that the obtained binder has excellent peel strength, and the discharge specific capacity and the cycling stability of the lithium ion battery are improved to a certain extent.
Drawings
FIG. 1 is a graph showing the results of peel strength tests of modified polyvinylidene fluoride binders prepared in examples 1-4 of the present invention and the binder of comparative example 1;
fig. 2 is a discharge capacity cycling diagram of a cell assembled from the modified polyvinylidene fluoride binder prepared in example 1 of the invention and the binder of comparative example 1.
Detailed Description
The following embodiments of the present invention are described in detail, and the embodiments are implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Example 1
A preparation method of polyvinylidene fluoride modified by a lithium ion battery binder specifically comprises the following steps:
s1: adding cobalt nitrate hexahydrate into a methanol solution, performing ultrasonic dissolution to obtain a solution A, adding 2-methylimidazole into the methanol solution, performing ultrasonic dissolution to obtain a solution B, then pouring the solution A into the solution B, magnetically stirring for 2 hours, centrifuging at a centrifuging speed of 9000r/min for 10-15 min, washing for 2 times by using the methanol solution, and performing vacuum drying to obtain a metal organic framework material ZIF-67, wherein the mass-to-volume ratio of the cobalt nitrate hexahydrate to the methanol solution in the solution A is 2.36g:10 mL; the mass-to-volume ratio of the 2-methylimidazole methanol solution in the solution B is 1.23g:10 mL.
S2: adding the metal organic framework material ZIF-67 in the step S1 into N, N-dimethylformamide, performing ultrasonic treatment until the solution becomes turbid to obtain a suspension, absorbing the upper layer in the suspension, adding the suspension into a polytetrafluoroethylene reaction kettle, adding polyvinylidene fluoride, placing the suspension in an oven for reaction at 200 ℃ for 1.5 hours, cooling to room temperature, transferring to an injection pump, and spinning into an absolute ethyl alcohol solution, wherein the mass-volume ratio of the ZIF-67 to the N, N-dimethylformamide to the polyvinylidene fluoride is 0.36g:10mL:2.6 g; the injection voltage of the electrospinning was 12kV, the injection rate was 0.4mL/h, and the injection distance was 13 cm.
S3: and fishing out the spun yarn in the absolute ethyl alcohol solution, drying in vacuum, placing in a ball mill, carrying out ball milling for 2 hours, adding the metal organic framework material ZIF-67 in the step S1, and continuing ball milling for 2 hours to obtain the binder modified polyvinylidene fluoride, wherein the mass ratio of the spun yarn obtained in the step S2 to the ZIF-67 is 1.2: 0.25.
Example 2
A preparation method of polyvinylidene fluoride modified by a lithium ion battery binder specifically comprises the following steps:
s1: adding cobalt nitrate hexahydrate into a methanol solution, performing ultrasonic dissolution to obtain a solution A, adding 2-methylimidazole into the methanol solution, performing ultrasonic dissolution to obtain a solution B, then pouring the solution A into the solution B, magnetically stirring for 6 hours, centrifuging at a centrifuging speed of 12000r/min for 15 minutes, washing for 3 times by using the methanol solution, and performing vacuum drying to obtain a metal organic framework material ZIF-67, wherein the mass-volume ratio of the cobalt nitrate hexahydrate to the methanol solution in the solution A is 3.12g:20 mL; the mass-to-volume ratio of the 2-methylimidazole methanol solution in the solution B is 1.89g:15 mL.
S2: adding the metal organic framework material ZIF-67 in the step S1 into N, N-dimethylacetamide, performing ultrasonic treatment until the solution becomes turbid to form a suspension, absorbing the upper layer in the suspension, adding the suspension into a polytetrafluoroethylene reaction kettle, adding polyvinylidene fluoride, placing the suspension in an oven for reaction at 220 ℃ for 1.5-3 h, cooling to room temperature, transferring the reaction product into an injection pump, and spinning the reaction product into an absolute ethyl alcohol solution, wherein the mass-volume ratio of the ZIF-67 to the N, N-dimethylacetamide to the polyvinylidene fluoride is 0.69g to 25mL to 4.2 g; the injection voltage of the electrospinning was 15kV, the injection rate was 0.5mL/h, and the injection distance was 16 cm.
S3: and fishing out the spun yarn in the absolute ethyl alcohol solution, drying in vacuum, placing in a ball mill, carrying out ball milling for 3h, adding the metal organic framework material ZIF-67 in the step S1, and continuing ball milling for 3h to obtain the binder modified polyvinylidene fluoride, wherein the mass ratio of the spun yarn obtained in the step S2 to the ZIF-67 is 2.6: 0.54.
Example 3
A preparation method of polyvinylidene fluoride modified by a lithium ion battery binder specifically comprises the following steps:
s1: adding cobalt nitrate hexahydrate into a methanol solution, performing ultrasonic dissolution to obtain a solution A, adding 2-methylimidazole into the methanol solution, performing ultrasonic dissolution to obtain a solution B, then pouring the solution A into the solution B, magnetically stirring for 4 hours, centrifuging at a centrifugation speed of 10000r/min for 10-15 min, washing for 2 times with the methanol solution, and performing vacuum drying to obtain a metal organic framework material ZIF-67, wherein the mass-volume ratio of the cobalt nitrate hexahydrate to the methanol solution in the solution A is 2.84g:15 mL; the mass-to-volume ratio of the 2-methylimidazole methanol solution in the solution B is 1.45g:12 mL.
S2: adding the metal organic framework material ZIF-67 in the step S1 into N, N-dimethylformamide, performing ultrasonic treatment until the solution becomes turbid to obtain a suspension, absorbing the upper layer in the suspension, adding the suspension into a polytetrafluoroethylene reaction kettle, adding polyvinylidene fluoride, placing the suspension in an oven for reaction at 210 ℃ for 2 hours, cooling to room temperature, transferring the suspension into an injection pump, and spinning into an absolute ethyl alcohol solution, wherein the mass-volume ratio of the ZIF-67 to the N, N-dimethylformamide to the polyvinylidene fluoride is 0.48g:15mL:3.1 g; the injection voltage for electrospinning was 13kV, the injection rate was 0.44mL/h, and the injection distance was 14 cm.
S3: and fishing out the spun yarn in the absolute ethyl alcohol solution, drying in vacuum, placing in a ball mill, carrying out ball milling for 3h, adding the metal organic framework material ZIF-67 in the step S1, and continuing to carry out ball milling for 2h to obtain the binder modified polyvinylidene fluoride, wherein the mass ratio of the spun yarn obtained in the step S2 to the ZIF-67 is 1.7: 0.33.
Example 4
A preparation method of polyvinylidene fluoride modified by a lithium ion battery binder specifically comprises the following steps:
s1: adding cobalt nitrate hexahydrate into a methanol solution, performing ultrasonic dissolution to obtain a solution A, adding 2-methylimidazole into the methanol solution, performing ultrasonic dissolution to obtain a solution B, then pouring the solution A into the solution B, magnetically stirring for 5 hours, centrifuging at a speed of 11000r/min for 14 minutes, washing for 3 times by using the methanol solution, and performing vacuum drying to obtain a metal organic framework material ZIF-67, wherein the mass-to-volume ratio of the cobalt nitrate hexahydrate to the methanol solution in the solution A is 3.03g:18 mL; the mass-to-volume ratio of the 2-methylimidazole methanol solution in the solution B is 1.81g:14 mL.
S2: adding the metal organic framework material ZIF-67 in the step S1 into N, N-dimethylacetamide, performing ultrasonic treatment until the solution becomes turbid to form a suspension, absorbing the upper layer in the suspension, adding the suspension into a polytetrafluoroethylene reaction kettle, adding polyvinylidene fluoride, placing the suspension in an oven for reaction at 220 ℃ for 2.5 hours, cooling to room temperature, transferring the suspension into an injection pump, and spinning the suspension into an absolute ethyl alcohol solution, wherein the mass-volume ratio of the ZIF-67 to the N, N-dimethylacetamide to the polyvinylidene fluoride is 0.62g:20mL:3.9 g; the injection voltage for electrospinning was 14kV, the injection rate was 0.48mL/h, and the injection distance was 15 cm.
S3: and fishing out the spun yarn in the absolute ethyl alcohol solution, drying in vacuum, placing in a ball mill, carrying out ball milling for 3h, adding the metal organic framework material ZIF-67 in the step S1, and continuing ball milling for 3h to obtain the binder modified polyvinylidene fluoride, wherein the mass ratio of the spun yarn obtained in the step S2 to the ZIF-67 is 2.4: 0.49.
Comparative example 1
Commercially available PVDF was not modified.
And (3) performance testing: preparing uniform slurry of a positive electrode, namely mixing a positive electrode active material lithium iron phosphate, a conductive agent, the binder modified polyvinylidene fluoride prepared in examples 1-4 or the binder in comparative example 1 according to a mass ratio of 8:1:1, performing ball milling for 2 hours, uniformly mixing to obtain positive electrode slurry, and then preparing a test sample strip: the positive electrode slurry is coated on an aluminum foil, dried and subjected to sample preparation according to the sample preparation requirement in the standard GB/T2790-1995 adhesive 180-degree peel strength test method for flexible materials versus rigid materials, the result is shown in the attached figure 1, and the peel strength of the modified polyvinylidene fluoride adhesive prepared in the examples 1-4 is 2.94KN m-1In the above, the excellent peel strength of the polyvinylidene fluoride binder of comparative example 1 is compared, which shows that the adhesive of the present invention has excellent adhesive effect of the inductive polyvinylidene fluoride.
Meanwhile, the modified polyvinylidene fluoride binder in the embodiment 1, the binder in the comparative example 1, the positive active material lithium iron phosphate and the conductive agent are mixed according to the mass ratio of 8:1:1, N-methyl pyrrolidone is dropwise added to be mixed into slurry, the slurry is coated on an aluminum foil, and the button battery is assembled to be subjected to a cyclic discharge performance test under the current density of 0.1C, and the test result is shown in the attached drawing 2.
Claims (8)
1. The preparation method of the polyvinylidene fluoride modified by the lithium ion battery binder is characterized by comprising the following steps:
s1: adding cobalt nitrate hexahydrate into a methanol solution, carrying out ultrasonic dissolution to obtain a solution A, adding 2-methylimidazole into the methanol solution, carrying out ultrasonic dissolution to obtain a solution B, then pouring the solution A into the solution B, carrying out magnetic stirring for 2-6 h, centrifuging, washing for 2-3 times by using the methanol solution, and carrying out vacuum drying to obtain a metal organic framework material ZIF-67;
s2: adding the metal organic framework material ZIF-67 in the step S1 into a solvent, then carrying out ultrasonic treatment until the solution becomes turbid to form a suspension, absorbing the upper layer of the suspension, adding the suspension into a polytetrafluoroethylene reaction kettle, then adding polyvinylidene fluoride, placing the suspension in an oven to react at 200-220 ℃ for 1.5-3 h, cooling to room temperature, moving the mixture into an injection pump, and spinning the mixture into solid solution;
s3: and fishing out the spinning in the solid bath solution, drying in vacuum, placing in a ball mill, carrying out ball milling for 2-3 h, adding the metal organic framework material ZIF-67 in the step S1, and continuing ball milling for 2-3 h to obtain the binder modified polyvinylidene fluoride.
2. The preparation method of the lithium ion battery binder modified polyvinylidene fluoride according to claim 1, wherein the mass-to-volume ratio of the cobalt nitrate hexahydrate to the methanol solution in the solution A is (2.36-3.12) g (10-20) mL; the mass-volume ratio of the 2-methylimidazole methanol solution in the solution B is (1.23-1.89) g, (10-15) mL.
3. The preparation method of the polyvinylidene fluoride modified by the lithium ion battery binder according to claim 1, wherein in the step S1, the centrifugation speed is 9000-12000 r/min and the centrifugation time is 10-15 min.
4. The method according to claim 1, wherein the solvent in step S2 is any one of N, N-dimethylformamide and N, N-dimethylacetamide.
5. The method for preparing the binder modified polyvinylidene fluoride for the lithium ion battery according to claim 1, wherein the solid solution is an absolute ethanol solution.
6. The preparation method of the lithium ion battery binder modified polyvinylidene fluoride according to claim 1, wherein the mass-to-volume ratio of the ZIF-67 to the solvent to the polyvinylidene fluoride in step S2 is (0.36-0.69) g, (10-25) mL, (2.6-4.2) g.
7. The method for preparing the polyvinylidene fluoride modified by the lithium ion battery binder according to claim 1, wherein the mass ratio of the spun yarn obtained in the step S3 and the ZIF-67 obtained in the step S2 is (1.2-2.6): (0.25-0.54).
8. The method for preparing the polyvinylidene fluoride modified by the lithium ion battery binder according to claim 1, wherein the injection voltage of the electrostatic spinning in the step S2 is 12-15 kV, the injection rate is 0.4-0.5 mL/h, and the injection distance is 13-16 cm.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114085302A (en) * | 2021-11-16 | 2022-02-25 | 江苏超电新能源科技发展有限公司 | Preparation method and application of chlorinated polyvinylidene fluoride material |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104241604A (en) * | 2014-09-26 | 2014-12-24 | 浙江大学 | Preparation method for lithium ion battery from electrode material with core-shell structure |
| CN105932291A (en) * | 2016-06-14 | 2016-09-07 | 华南师范大学 | Method for preparing porous carbon material by taking metal organic framework as template, and application thereof |
| CN106328948A (en) * | 2016-10-27 | 2017-01-11 | 华南师范大学 | Preparation method of novel lithium battery negative pole material based on [Zn(BIBBA)2]n |
| FR3063180A1 (en) * | 2017-02-21 | 2018-08-24 | Commissariat Energie Atomique | USE OF A MIXED ORGANIC-INORGANIC MATRIX COMPOUND, SAID MOF, AS AN ELECTRODE ACTIVE MATERIAL. |
| CN108550834A (en) * | 2018-06-01 | 2018-09-18 | 南开大学 | A kind of preparation method and application of lithium ion battery negative material |
| CN109851703A (en) * | 2017-11-30 | 2019-06-07 | 比亚迪股份有限公司 | Vinylidene fluoride analog copolymer and its preparation method and application suitable for binder |
| CN111933934A (en) * | 2020-07-31 | 2020-11-13 | 广东凯金新能源科技股份有限公司 | Battery negative electrode material and preparation method thereof |
-
2021
- 2021-05-11 CN CN202110508424.9A patent/CN113249060B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104241604A (en) * | 2014-09-26 | 2014-12-24 | 浙江大学 | Preparation method for lithium ion battery from electrode material with core-shell structure |
| CN105932291A (en) * | 2016-06-14 | 2016-09-07 | 华南师范大学 | Method for preparing porous carbon material by taking metal organic framework as template, and application thereof |
| CN106328948A (en) * | 2016-10-27 | 2017-01-11 | 华南师范大学 | Preparation method of novel lithium battery negative pole material based on [Zn(BIBBA)2]n |
| FR3063180A1 (en) * | 2017-02-21 | 2018-08-24 | Commissariat Energie Atomique | USE OF A MIXED ORGANIC-INORGANIC MATRIX COMPOUND, SAID MOF, AS AN ELECTRODE ACTIVE MATERIAL. |
| CN109851703A (en) * | 2017-11-30 | 2019-06-07 | 比亚迪股份有限公司 | Vinylidene fluoride analog copolymer and its preparation method and application suitable for binder |
| CN108550834A (en) * | 2018-06-01 | 2018-09-18 | 南开大学 | A kind of preparation method and application of lithium ion battery negative material |
| CN111933934A (en) * | 2020-07-31 | 2020-11-13 | 广东凯金新能源科技股份有限公司 | Battery negative electrode material and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| YANG FENG ET AL.: ""Taming polysulfides and facilitating lithium-ion migration: Novel electrospinning MOFs@PVDF-based composite separator with spiderweb-like structure for Li-S batteries"", 《ELECTROCHIMICA ACTA》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114085302A (en) * | 2021-11-16 | 2022-02-25 | 江苏超电新能源科技发展有限公司 | Preparation method and application of chlorinated polyvinylidene fluoride material |
| CN114085302B (en) * | 2021-11-16 | 2023-03-14 | 江苏超电新能源科技发展有限公司 | Preparation method and application of chlorinated polyvinylidene fluoride material |
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