CN114446674B - Novel capacitance carbon polarity composite material, capacitance electrode, preparation method of capacitance electrode and capacitor - Google Patents
Novel capacitance carbon polarity composite material, capacitance electrode, preparation method of capacitance electrode and capacitor Download PDFInfo
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- CN114446674B CN114446674B CN202210214548.0A CN202210214548A CN114446674B CN 114446674 B CN114446674 B CN 114446674B CN 202210214548 A CN202210214548 A CN 202210214548A CN 114446674 B CN114446674 B CN 114446674B
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- capacitor
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 159
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 76
- 239000002131 composite material Substances 0.000 title claims abstract description 63
- 239000003990 capacitor Substances 0.000 title claims abstract description 53
- 238000002360 preparation method Methods 0.000 title claims abstract description 22
- 229910021389 graphene Inorganic materials 0.000 claims abstract description 35
- 150000001335 aliphatic alkanes Chemical class 0.000 claims abstract description 25
- 238000010438 heat treatment Methods 0.000 claims abstract description 18
- 239000011248 coating agent Substances 0.000 claims description 23
- 238000000576 coating method Methods 0.000 claims description 23
- 239000000843 powder Substances 0.000 claims description 18
- 239000002184 metal Substances 0.000 claims description 15
- 239000002245 particle Substances 0.000 claims description 12
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 10
- 238000002156 mixing Methods 0.000 claims description 7
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 239000003960 organic solvent Substances 0.000 claims description 4
- OTMSDBZUPAUEDD-UHFFFAOYSA-N Ethane Chemical compound CC OTMSDBZUPAUEDD-UHFFFAOYSA-N 0.000 claims description 3
- 239000001294 propane Substances 0.000 claims description 3
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 2
- 239000005977 Ethylene Substances 0.000 claims description 2
- 239000000853 adhesive Substances 0.000 claims description 2
- 230000001070 adhesive effect Effects 0.000 claims description 2
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 claims description 2
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 claims description 2
- 239000003973 paint Substances 0.000 claims 2
- 238000000034 method Methods 0.000 abstract description 6
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N dimethyl sulfoxide Natural products CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 description 7
- 239000011230 binding agent Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007772 electrode material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- -1 ethylene, propylene Chemical group 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Inorganic materials O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/22—Electrodes
- H01G11/30—Electrodes characterised by their material
- H01G11/32—Carbon-based
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/22—Electrodes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/84—Processes for the manufacture of hybrid or EDL capacitors, or components thereof
- H01G11/86—Processes for the manufacture of hybrid or EDL capacitors, or components thereof specially adapted for electrodes
-
- 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
- Y02E60/13—Energy storage using capacitors
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Electric Double-Layer Capacitors Or The Like (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
The invention discloses a novel capacitance carbon polarity composite material, a capacitance electrode, a preparation method thereof and a capacitor, wherein the preparation method of the novel capacitance carbon polarity composite material comprises the following steps: placing activated carbon in a vacuum pot, and injecting alkane into the vacuum pot; and heating the vacuum pot to split the alkane and grow graphene on the surface of the activated carbon, so as to prepare the novel capacitance carbon polarity composite material. According to the invention, the active carbon and alkane placed in the vacuum pot are heated, so that the alkane is split and graphene grows on the surface of the active carbon, and the novel capacitance carbon polarity composite material is prepared. The novel capacitance carbon polarity composite material prepared by the method has higher conductivity, and graphene growing on the surface of active carbon can be used for storing charges. The novel capacitance carbon polarity composite material is used for preparing the capacitance electrode, so that the conductivity of the capacitance electrode and the capacitance of the capacitor can be effectively improved.
Description
Technical Field
The invention relates to the technical field of electrode materials, in particular to a novel capacitance carbon polarity composite material, a capacitance electrode, a preparation method of the capacitance electrode and a capacitor.
Background
The two poles of the capacitor product are generally manufactured by coating a polar material on a metal sheet, bonding the polar material and the metal sheet together by using an adhesive, and finally connecting the metal sheet by using a wire. Typically, the polar materials coated on the electrodes are all based on activated carbon. The activated carbon is produced by heating carbon and then impacting the carbon with nitrogen, or carbon dioxide, to form a plurality of holes or through-holes which are good sites for future charge storage. The more holes or through holes, the better the electricity storage effect, and fig. 1 is a simple form of activated carbon particles.
However, the conductivity of the prepared electrode needs to be improved by using the existing activated carbon as a polar material coated on the electrode, and the capacitance of the capacitor product prepared by using the electrode needs to be improved.
Accordingly, the prior art is still in need of improvement and development.
Disclosure of Invention
In view of the shortcomings of the prior art, the invention aims to provide a novel capacitance carbon polarity composite material, a capacitance electrode, a preparation method thereof and a capacitor, and aims to solve the problems that the conductivity of a polarity material coated on the surface of the existing capacitance electrode is poor and the capacitance of a capacitor prepared by the capacitance electrode is poor.
The technical scheme of the invention is as follows:
a preparation method of a novel capacitance carbon polarity composite material comprises the following steps:
placing activated carbon in a vacuum pot, and injecting alkane into the vacuum pot;
and heating the vacuum pot to split the alkane and grow graphene on the surface of the activated carbon, so as to prepare the novel capacitance carbon polarity composite material.
The preparation method of the novel capacitance carbon polarity composite material comprises the step of preparing the novel capacitance carbon polarity composite material, wherein the alkane is one or more of methane, ethane, propane, ethylene and propylene.
The preparation method of the novel capacitance carbon polarity composite material comprises the step of heating at 800-1000 ℃.
The preparation method of the novel capacitance carbon polarity composite material comprises the step of heating for 25-35min.
The invention discloses a novel capacitance carbon polarity composite material, which is prepared by adopting a preparation method of the novel capacitance carbon polarity composite material.
A preparation method of a capacitor electrode comprises the following steps:
mixing the novel capacitance carbon polar composite material and graphene powder in an organic solvent to form a mixed coating;
and coating the mixed coating on the surface of a metal sheet, and fixing the mixed coating on the surface of the metal sheet through a binder to prepare the capacitor electrode.
The preparation method of the capacitor electrode comprises the step of preparing the novel capacitor carbon polar composite material, wherein the particle size of the novel capacitor carbon polar composite material is 150-250 meshes.
The preparation method of the capacitor electrode comprises the step of preparing graphene powder with a particle size of 800-1200 meshes.
The invention relates to a capacitor electrode, which is prepared by adopting the preparation method of the capacitor electrode.
A capacitor comprising the capacitive electrode of the present invention.
The beneficial effects are that: according to the invention, the active carbon and alkane placed in the vacuum pot are heated, so that the alkane is split and graphene grows on the surface of the active carbon, and the novel capacitance carbon polarity composite material is prepared. The novel capacitance carbon polarity composite material prepared by the method has higher conductivity, and graphene growing on the surface of active carbon can be used for storing charges. The novel capacitance carbon polarity composite material is used for preparing the capacitance electrode, so that the conductivity of the capacitance electrode and the capacitance of the capacitor can be effectively improved.
Drawings
Fig. 1 is a schematic structural diagram of a conventional activated carbon.
FIG. 2 is a flow chart of a method for preparing a novel capacitor carbon polar composite material according to the invention.
FIG. 3 is a schematic structural diagram of a novel capacitive carbon polar composite material prepared in accordance with the present invention.
Fig. 4 is a schematic diagram of a capacitor electrode prepared according to the present invention.
Detailed Description
The invention provides a novel capacitor carbon polarity composite material, a capacitor electrode, a preparation method thereof and a capacitor, and aims to make the purposes, technical schemes and effects of the invention clearer and more definite, and the invention is further described in detail below. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Referring to fig. 2, fig. 2 is a schematic diagram showing a preparation method of a novel capacitor carbon polar composite material according to the present invention, which includes the following steps:
s10, placing activated carbon in a vacuum pot, and injecting alkane into the vacuum pot;
and S20, performing heating treatment on the vacuum pot to enable the alkane to split and grow graphene on the surface of the activated carbon, so as to prepare the novel capacitance carbon polarity composite material.
According to the invention, the activated carbon and alkane placed in the vacuum pot are heated, so that the alkane is split and graphene grows on the surface of the activated carbon, and the graphene grows on the surface of the activated carbon in an angular shape as shown in figure 3. The novel capacitance carbon polarity composite material prepared by the method has higher conductivity, and graphene growing on the surface of active carbon can be used for storing charges, so that the capacity of the capacitance is improved.
In some embodiments, the alkane is one or more of methane, ethane, propane, ethylene, propylene, but is not limited thereto. By way of example, the alkane is methane, which splits into element C and 2H during heating 2 In this process, the split carbon grows graphene as shown in fig. 3 around the activated carbon when the temperature is lowered, and the surface of the activated carbon becomes hedgehog-shaped.
In some embodiments, the temperature of the heating treatment is 800-1000 ℃, but is not limited thereto. The temperature of the heating treatment may be 800 ℃, 850 ℃, 900 ℃, 950 ℃, 1000 ℃ or the like, for example.
In some embodiments, the time of the heating treatment is 25 to 35 minutes, but is not limited thereto. As an example, the time of the heating treatment may be 25min, 30min, 35min, or the like.
In some specific embodiments, the preparation steps of the novel capacitive carbon polar composite material include: placing activated carbon in a vacuum pot, and injecting methane into the vacuum pot; and heating the vacuum pot to 800-1000 ℃ and preserving heat for 30min, and then gradually cooling to enable the alkane to split and grow graphene on the surface of the activated carbon, so as to prepare the novel capacitance carbon polarity composite material.
In some embodiments, a novel capacitive carbon polarity composite is also provided, which is made using the novel capacitive carbon polarity composite preparation method of the present invention.
In some embodiments, there is also provided a method of manufacturing a capacitive electrode, comprising the steps of:
mixing the novel capacitance carbon polar composite material and graphene powder in an organic solvent to form a mixed coating;
and coating the mixed coating on the surface of a metal sheet, and fixing the mixed coating on the surface of the metal sheet through a binder to prepare the capacitor electrode.
As shown in fig. 4, in this embodiment, by mixing the graphene powder with the novel capacitor carbon polar composite material, the graphene powder may be inlaid or distributed between adjacent novel capacitor carbon polar composite materials, so as to increase the contact area of adjacent novel capacitor carbon polar composite materials, thereby effectively improving the conductivity between activated carbons; meanwhile, graphene on the novel capacitance carbon polar composite material can also be used for storing charges. That is, the capacitance electrode prepared by the method of the invention can not only improve the conductivity of the capacitance electrode, but also effectively improve the capacitance capacity of the capacitance electrode when the capacitance electrode is used for preparing a capacitor.
In some embodiments, the organic solvent is dimethylsulfoxide, but is not limited thereto.
In some embodiments, the novel capacitive carbon polar composite has a particle size of 150-250 mesh. In this embodiment, if the particle size of the novel capacitor carbon polar composite material is too small (greater than 250 mesh), many holes in the activated carbon are easily damaged, so that the specific surface area is too small, and the novel capacitor carbon polar composite material is not suitable for being made into a capacitor electrode material; if the particle size of the novel capacitive carbon polar composite material is too large (less than 150 mesh), the contact between adjacent novel capacitive carbon polar composite materials will not be very tight, that is, there are many gaps between them, which can affect the conductivity of the electrode.
In some embodiments, the graphene powder has a particle size of 800-1200 mesh. According to the embodiment, the graphene powder and the novel capacitance carbon polarity composite material are mixed together, so that the graphene powder can be inlaid or distributed between the adjacent novel capacitance carbon polarity composite materials, the contact area of the adjacent novel capacitance carbon polarity composite materials is increased, and the conductivity between the activated carbons is effectively improved. In this embodiment, if the particle size of the graphene powder is too small (greater than 1200 mesh), the graphene powder easily enters into the holes of the novel capacitor carbon polar composite material, so that the stored charge is reduced, and the capacity of the finished capacitor is affected; if the particle size of the adopted graphene powder is too large (smaller than 800 meshes), the graphene powder cannot be effectively distributed between the adjacent novel capacitance carbon polar composite materials, and the conductivity between the adjacent novel capacitance carbon polar composite materials cannot be improved.
In some embodiments, there is also provided a capacitive electrode manufactured using the method of manufacturing a capacitive electrode of the present invention.
In some embodiments, a capacitor is further provided, which includes the capacitor electrode of the present invention, and the capacitor prepared by using the capacitor electrode of the present invention has a better capacitance.
The invention is further illustrated by the following examples:
example 1
A method of making a capacitive electrode comprising the steps of:
placing activated carbon in a vacuum pot, and injecting alkane into the vacuum pot;
heating the vacuum pot at 800 ℃ for 35min to enable the alkane to split and grow graphene on the surface of the active carbon, so as to prepare the novel capacitance carbon polarity composite material;
mixing the novel capacitor carbon polar composite material and graphene powder in dimethyl sulfoxide to form a mixed coating;
and coating the mixed coating on the surface of a metal sheet, and fixing the mixed coating on the surface of the metal sheet through a binder to prepare the capacitor electrode.
Example 2
A method of making a capacitive electrode comprising the steps of:
placing activated carbon in a vacuum pot, and injecting alkane into the vacuum pot;
heating the vacuum pot at 900 ℃ for 30min to enable the alkane to split and grow graphene on the surface of the active carbon, so as to prepare the novel capacitance carbon polarity composite material;
mixing the novel capacitor carbon polar composite material and graphene powder in dimethyl sulfoxide to form a mixed coating;
and coating the mixed coating on the surface of a metal sheet, and fixing the mixed coating on the surface of the metal sheet through a binder to prepare the capacitor electrode.
Example 3
A method of making a capacitive electrode comprising the steps of:
placing activated carbon in a vacuum pot, and injecting alkane into the vacuum pot;
heating the vacuum pot at 1000 ℃ for 25min to enable the alkane to split and grow graphene on the surface of the active carbon, so as to prepare the novel capacitance carbon polarity composite material;
mixing the novel capacitor carbon polar composite material and graphene powder in dimethyl sulfoxide to form a mixed coating;
and coating the mixed coating on the surface of a metal sheet, and fixing the mixed coating on the surface of the metal sheet through a binder to prepare the capacitor electrode.
It is to be understood that the invention is not limited in its application to the examples described above, but is capable of modification and variation in light of the above teachings by those skilled in the art, and that all such modifications and variations are intended to be included within the scope of the appended claims.
Claims (5)
1. The preparation method of the novel capacitor carbon polarity composite material is characterized by comprising the following steps:
placing activated carbon in a vacuum pot, and injecting alkane into the vacuum pot, wherein the alkane is one or more of methane, ethane, propane, ethylene and propylene;
and (3) carrying out heating treatment on the vacuum pot, wherein the temperature of the heating treatment is 800-1000 ℃, the heating treatment time is 25-35min, so that the alkane is split and graphene grows on the surface of the activated carbon, and the novel capacitance carbon polarity composite material is prepared, and the particle size of the novel capacitance carbon polarity composite material is 150-250 meshes.
2. A novel capacitor carbon polarity composite material, which is characterized by being prepared by the preparation method of claim 1.
3. The preparation method of the capacitor electrode is characterized by comprising the following steps:
mixing the novel capacitive carbon polar composite material of claim 2 with graphene powder in an organic solvent to form a mixed coating;
coating the mixed paint on the surface of a metal sheet, and fixing the mixed paint on the surface of the metal sheet through an adhesive to prepare the capacitor electrode
The particle size of the novel capacitor carbon polar composite material is 150-250 meshes, the particle size of the graphene powder is 800-1200 meshes, and the graphene powder is inlaid or distributed between adjacent novel capacitor carbon polar composite materials.
4. A capacitor electrode produced by the production method according to claim 3.
5. A capacitor comprising the capacitive electrode of claim 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210214548.0A CN114446674B (en) | 2022-03-04 | 2022-03-04 | Novel capacitance carbon polarity composite material, capacitance electrode, preparation method of capacitance electrode and capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210214548.0A CN114446674B (en) | 2022-03-04 | 2022-03-04 | Novel capacitance carbon polarity composite material, capacitance electrode, preparation method of capacitance electrode and capacitor |
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| Publication Number | Publication Date |
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| CN114446674A CN114446674A (en) | 2022-05-06 |
| CN114446674B true CN114446674B (en) | 2024-02-13 |
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| CN202210214548.0A Active CN114446674B (en) | 2022-03-04 | 2022-03-04 | Novel capacitance carbon polarity composite material, capacitance electrode, preparation method of capacitance electrode and capacitor |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109559897A (en) * | 2017-09-26 | 2019-04-02 | 财团法人工业技术研究院 | The electrode and its manufacturing method of composite material and its manufacturing method and application composite material |
| CN109659082A (en) * | 2019-01-16 | 2019-04-19 | 深圳天元羲王材料科技有限公司 | A kind of graphene composite cable and preparation method thereof |
| CN109767992A (en) * | 2019-01-16 | 2019-05-17 | 深圳天元羲王材料科技有限公司 | Radiator heat-dissipation layer preparation method and radiator |
| CN111092207A (en) * | 2019-12-20 | 2020-05-01 | 深圳天元羲王材料科技有限公司 | Positive electrode material, preparation method thereof and lithium-sulfur battery |
| CN111146017A (en) * | 2019-12-24 | 2020-05-12 | 威海三合永新能源科技有限公司 | High-voltage-resistant graphene/activated carbon electrode material and preparation method and application thereof |
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2022
- 2022-03-04 CN CN202210214548.0A patent/CN114446674B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109559897A (en) * | 2017-09-26 | 2019-04-02 | 财团法人工业技术研究院 | The electrode and its manufacturing method of composite material and its manufacturing method and application composite material |
| CN109659082A (en) * | 2019-01-16 | 2019-04-19 | 深圳天元羲王材料科技有限公司 | A kind of graphene composite cable and preparation method thereof |
| CN109767992A (en) * | 2019-01-16 | 2019-05-17 | 深圳天元羲王材料科技有限公司 | Radiator heat-dissipation layer preparation method and radiator |
| CN111092207A (en) * | 2019-12-20 | 2020-05-01 | 深圳天元羲王材料科技有限公司 | Positive electrode material, preparation method thereof and lithium-sulfur battery |
| CN111146017A (en) * | 2019-12-24 | 2020-05-12 | 威海三合永新能源科技有限公司 | High-voltage-resistant graphene/activated carbon electrode material and preparation method and application thereof |
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