CN110707328A - Preparation method of graphene-coated aluminum foil - Google Patents
Preparation method of graphene-coated aluminum foil Download PDFInfo
- Publication number
- CN110707328A CN110707328A CN201911053750.4A CN201911053750A CN110707328A CN 110707328 A CN110707328 A CN 110707328A CN 201911053750 A CN201911053750 A CN 201911053750A CN 110707328 A CN110707328 A CN 110707328A
- Authority
- CN
- China
- Prior art keywords
- graphene
- aluminum foil
- coated aluminum
- graphite powder
- preparing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- H01M4/64—Carriers or collectors
- H01M4/66—Selection of materials
- H01M4/663—Selection of materials containing carbon or carbonaceous materials as conductive part, e.g. graphite, carbon fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/24—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/15—Nano-sized carbon materials
- C01B32/182—Graphene
- C01B32/184—Preparation
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/15—Nano-sized carbon materials
- C01B32/182—Graphene
- C01B32/198—Graphene oxide
-
- 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
- H01M4/64—Carriers or collectors
- H01M4/66—Selection of materials
- H01M4/661—Metal or alloys, e.g. alloy coatings
-
- 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
- H01M4/64—Carriers or collectors
- H01M4/66—Selection of materials
- H01M4/665—Composites
- H01M4/667—Composites in the form of layers, e.g. coatings
-
- 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
-
- 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 invention discloses a preparation method of a graphene coated aluminum foil, which is characterized in that prepared graphene oxide is highly dispersed and can be uniformly attached to the aluminum foil, the thickness (double surfaces) of the coating can be 0.2-2 mu m, the conductivity of a pole piece is improved, and the capacity of a battery can be better exerted under the condition of not losing energy density. And carbon black is added into the graphene dispersion liquid as a conductive medium, so that the conductivity of the graphene dispersion liquid is further enhanced. In addition, the polypropylene resin liquid is added into the Graphene/sp slurry to enhance the adhesive force of the Graphene and the carbon black on the aluminum foil, so that the adhesive property of the Graphene coating and the aluminum foil is greatly improved, the expansion separation phenomenon generated by the conventional carbon material is overcome, the modified Graphene coating aluminum foil has better processing property compared with the traditional aluminum foil, and the comprehensive performance of the lithium ion battery is improved at lower cost.
Description
Technical Field
The invention relates to a preparation method of a graphene coating aluminum foil.
Technical Field
In the structure of a lithium battery, a slurry obtained by mixing conductive carbon black, an active material lithium salt and a binder is generally coated on the surface of an aluminum foil to serve as an anode. The cost for improving the comprehensive performance of the lithium ion battery by improving the aluminum foil is low, and the manufactured battery has high cost performance and becomes a preferred scheme. The carbon material is coated on the surface of the aluminum foil to improve the bonding capability of the aluminum foil and the active material, but the coating thickness is influenced by the larger particle size of the conventional carbon material, so that the energy density of the battery is reduced; in addition, in the using process, after the battery is charged and discharged for many times, the active substances on the surface of the aluminum foil can gradually expand, and the contact area between the aluminum foil and the active substances is gradually reduced, so that various performances of the battery are gradually reduced.
Graphene is a novel carbon material with a two-dimensional nanostructure, has ultrahigh conductivity and super-strong flexibility, can effectively inhibit the expansion separation phenomenon generated by the conventional carbon material modified aluminum foil, and can improve the conductivity to better exert the battery capacity, so that the graphene coated aluminum foil becomes a hotspot of research. However, since graphene is a planar conjugated structure composed of sp2 hybridized carbon atoms, very strong T-m action and van der waals action exist between sheets, so that the dispersibility is very poor, and the practical application of graphene is severely limited.
Disclosure of Invention
Aiming at the problems of the graphene modified aluminum foil, the invention provides a preparation method of a graphene coated aluminum foil. The specific technical scheme is as follows:
a preparation method of a graphene-coated aluminum foil comprises the following steps:
1) preparing a graphene dispersion liquid:
s1-1: adding graphite powder, potassium persulfate and phosphorus pentoxide into concentrated sulfuric acid, heating in a water bath, stirring for 6h, and cooling to room temperature; then diluting and cleaning the graphite powder to be neutral by using ionized water, and drying the graphite powder to obtain pre-oxidized graphite powder;
s1-2: adding the pre-oxidized graphite powder obtained in the step S1-1 into concentrated sulfuric acid, violently stirring in an ice bath, simultaneously adding potassium permanganate, deionized water and hydrogen peroxide for further oxidation, cleaning by using HCl after filtering to remove metal ions, and centrifugally cleaning to be neutral to obtain graphene oxide;
s1-3: adding a high-efficiency graphene dispersing agent into the graphene oxide obtained in the step S1-2, and then ultrasonically mixing in water to prepare a 10wt% highly dispersed graphene dispersion liquid;
2) preparation of graphene coated aluminum foil
S2-1: mixing and uniformly dispersing the Graphene dispersion liquid prepared in the step S1-3 and carbon black, wherein the mass fraction of the Graphene dispersion liquid is that the carbon black is =1:1, and ultrasonically dispersing for 1h to obtain Graphene/sp slurry;
s2-2: adding acrylic resin into the Graphene/sp slurry dispersed in the step S2-1, and fully and ultrasonically stirring and dispersing for 2 hours again to obtain a Graphene coating;
s2-3: soaking the aluminum foil in the graphene coating solution prepared in the step S2-2 for 15-30 min, fishing out, and vacuum drying at 100 ℃ to obtain a graphene coating aluminum foil semi-finished product;
s2-4: and (4) annealing the semi-finished product of the graphene coated aluminum foil prepared in the step (S2-3) for 1h to obtain a finished product of the graphene coated aluminum foil.
In a preferred technical scheme, in step S1-1, the graphite powder, the potassium persulfate and the phosphorus pentoxide are added in the following amounts by weight: 2.5-3.5 parts of graphite powder, 2-3 parts of potassium persulfate and 2-3 parts of phosphorus pentoxide; the using amount of the concentrated sulfuric acid is 0.5wt% of the graphite powder.
In a preferable technical scheme, in the step S1-1, the temperature of the water bath heating is 80 ℃; the drying is room temperature drying, and the dryness is that the water content is lower than 5%.
As a preferable technical solution, in step S1-2, the amount of concentrated sulfuric acid is 5wt% of the amount of graphite powder; the using amount of the potassium permanganate is 0.3wt% of the graphite powder; the HCl concentration was 10%.
As a preferable technical scheme, in the step S1-3, the usage amount of the high-efficiency graphene dispersant is 33wt% of the amount of the graphite powder; the perylene-3, 4,9, 10-tetracarboxylic dianhydride is used as a raw material, and is obtained by carrying out reflux reaction on the perylene-3, 4,9, 10-tetracarboxylic dianhydride and acrylate rubber in toluene and then carrying out formic acid treatment on the perylene-3, 4,9, 10-tetracarboxylic dianhydride.
Further, the efficient graphene dispersant comprises the following components in parts by weight: 5-10 parts of perylene-3, 4,9, 10-tetracarboxylic dianhydride and 1-2 parts of acrylate rubber, and the perylene-3, 4,9, 10-tetracarboxylic dianhydride and the acrylate rubber are mixed and then introduced into a toluene solvent for reflux.
Further, the reflux temperature is 100-110 ℃, and the concentration of formic acid for acidification is 5%.
The method for preparing the Graphene-coated aluminum foil according to claim 1, wherein in the step S2-2, the weight ratio of the addition amount of the acrylic resin to the Graphene/sp slurry is 1: 1.
Preferably, in step S2-4, the annealing process is performed under the protection of nitrogen and hydrogen, and the annealing temperature is 200 ℃.
Further, the introduction amount of nitrogen and hydrogen in the annealing treatment is N2:H2=50sccm:50sccm。
Has the advantages that:
according to the invention, the prepared graphene oxide is highly dispersed, so that the graphene oxide can be uniformly attached to an aluminum foil, the thickness (double surfaces) of the coating can be 0.2-2 μm, the conductivity of a pole piece is improved, and the capacity of a battery can be better exerted under the condition of not losing energy density. And carbon black is added into the graphene dispersion liquid as a conductive medium, so that the conductivity of the graphene dispersion liquid is further enhanced. In addition, the polypropylene resin liquid is added into the Graphene/sp slurry to enhance the adhesive force of the Graphene and the carbon black on the aluminum foil, so that the adhesive property of the Graphene coating and the aluminum foil is greatly improved, the expansion separation phenomenon generated by the conventional carbon material is overcome, the modified Graphene coating aluminum foil has better processing property compared with the traditional aluminum foil, and the comprehensive performance of the lithium ion battery is improved at lower cost.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the embodiments.
The preparation method of the graphene-coated aluminum foil comprises the following steps:
1) preparing a graphene dispersion liquid:
s1-1: adding 3g of graphite powder, 2.5g of potassium persulfate and 2.5g of phosphorus pentoxide into 15mg of concentrated sulfuric acid, heating in a water bath at 80 ℃, stirring for 6 hours, and cooling to room temperature; and diluting and cleaning the graphite powder to be neutral by using 500ml of deionized water, and drying the graphite powder for 3-5 days at room temperature until the water content is lower than 5% to obtain pre-oxidized graphite powder.
S1-2: adding the pre-oxidized graphite powder obtained in the step S1-1 into 150mg of concentrated sulfuric acid, violently stirring at 0 ℃ in an ice bath, slowly adding 15mg of potassium permanganate, 500ml of deionized water and 100ml of hydrogen peroxide for further oxidation, cleaning by using 10% HCl after filtering to remove metal ions, and centrifugally cleaning to be neutral to obtain the graphene oxide.
S1-3: adding a high-efficiency graphene dispersing agent with the graphite powder amount of 33wt% into the graphene oxide obtained in the step S1-2, and then ultrasonically mixing in water to prepare a highly dispersed graphene dispersion liquid with the graphite powder amount of 10 wt%. The efficient graphene dispersing agent is obtained by taking perylene-3, 4,9, 10-tetracarboxylic dianhydride as a raw material, performing reflux reaction on the perylene-3, 4,9, 10-tetracarboxylic dianhydride and acrylate rubber in toluene, and then performing formic acid treatment on the perylene-3, 4,9, 10-tetracarboxylic dianhydride. The dispersant comprises the following components in parts by weight: 5 parts of perylene-3, 4,9, 10-tetracarboxylic dianhydride and 1 part of acrylate rubber, wherein the perylene-3, 4,9, 10-tetracarboxylic dianhydride and the acrylate rubber are mixed and then introduced into a toluene solvent for reflux, the reflux temperature is 110 ℃, and the concentration of formic acid for acidification is 5%.
2) Preparation of graphene coated aluminum foil
S2-1: mixing and uniformly dispersing the Graphene dispersion liquid prepared in the step S1-3 and carbon black, wherein the mass fraction of the Graphene dispersion liquid is that the carbon black is =1:1, and ultrasonically dispersing for 1h to obtain Graphene/sp slurry;
s2-2: adding acrylic resin into the Graphene/sp slurry dispersed in the step S2-1, wherein the addition amount of the acrylic resin is 1:1 by weight of the Graphene/sp slurry, and fully and ultrasonically stirring and dispersing for 2 hours again to obtain a Graphene coating;
s2-3: soaking the aluminum foil in the graphene coating solution prepared in the step S2-2 for 15-30 min to enable the thickness of a carbon layer of graphene to be 0.2-2 mu m, fishing out, and drying in vacuum at 100 ℃ to obtain a graphene coating aluminum foil semi-finished product;
s2-4: and (4) annealing the semi-finished product of the graphene coated aluminum foil prepared in the step (S2-3) for 1h, wherein the annealing conditions are as follows: at a temperature of 200 ℃ in an atmosphere of N2:H2And (5) 50sccm, namely obtaining a graphene coated aluminum foil finished product.
Experiments prove that the graphene coated aluminum foil has better processing performance as a current collector of a battery anode, and the capacity of the battery can be better exerted under the condition of not losing energy density. And carbon black is added into the graphene dispersion liquid as a conductive medium, so that the conductivity of the graphene dispersion liquid is further enhanced. In addition, the polypropylene resin liquid is added into the Graphene/sp slurry to enhance the adhesive force of the Graphene and the carbon black on the aluminum foil, so that the adhesive property of the Graphene coating and the aluminum foil is greatly improved, the expansion separation phenomenon generated by the conventional carbon material is overcome, the modified Graphene coating aluminum foil has better processing property compared with the traditional aluminum foil, and the comprehensive performance of the lithium ion battery is improved at lower cost.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. However, any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention are within the protection scope of the technical solution of the present invention.
Claims (10)
1. A preparation method of a graphene coating aluminum foil is characterized by comprising the following steps: the method comprises the following steps:
1) preparing a graphene dispersion liquid:
s1-1: adding graphite powder, potassium persulfate and phosphorus pentoxide into concentrated sulfuric acid, heating in a water bath, stirring for 6h, and cooling to room temperature; then diluting and cleaning the graphite powder to be neutral by using ionized water, and drying the graphite powder to obtain pre-oxidized graphite powder;
s1-2: adding the pre-oxidized graphite powder obtained in the step S1-1 into concentrated sulfuric acid, violently stirring in an ice bath, simultaneously adding potassium permanganate, deionized water and hydrogen peroxide for further oxidation, cleaning by using HCl after filtering to remove metal ions, and centrifugally cleaning to be neutral to obtain graphene oxide;
s1-3: adding a high-efficiency graphene dispersing agent into the graphene oxide obtained in the step S1-2, and then ultrasonically mixing in water to prepare a 10wt% highly dispersed graphene dispersion liquid;
2) preparation of graphene coated aluminum foil
S2-1: mixing and uniformly dispersing the Graphene dispersion liquid prepared in the step S1-3 and carbon black, wherein the mass fraction of the Graphene dispersion liquid is that the carbon black is =1:1, and ultrasonically dispersing for 1h to obtain Graphene/sp slurry;
s2-2: adding acrylic resin into the Graphene/sp slurry dispersed in the step S2-1, and fully and ultrasonically stirring and dispersing for 2 hours again to obtain a Graphene coating;
s2-3: soaking the aluminum foil in the graphene coating solution prepared in the step S2-2 for 15-30 min, fishing out, and vacuum drying at 100 ℃ to obtain a graphene coating aluminum foil semi-finished product;
s2-4: and (4) annealing the semi-finished product of the graphene coated aluminum foil prepared in the step (S2-3) for 1h to obtain a finished product of the graphene coated aluminum foil.
2. The method for preparing a graphene-coated aluminum foil according to claim 1, wherein: in step S1-1, the graphite powder, the potassium persulfate and the phosphorus pentoxide are added in the following amounts by weight: 2.5-3.5 parts of graphite powder, 2-3 parts of potassium persulfate and 2-3 parts of phosphorus pentoxide; the using amount of the concentrated sulfuric acid is 0.5wt% of the graphite powder.
3. The method for preparing a graphene-coated aluminum foil according to claim 1, wherein: in the step S1-1, the water bath heating temperature is 80 ℃; the drying is room temperature drying, and the dryness is that the water content is lower than 5%.
4. The method for preparing a graphene-coated aluminum foil according to claim 1, wherein: in the step S1-2, the using amount of the concentrated sulfuric acid is 5wt% of the graphite powder; the using amount of the potassium permanganate is 0.3wt% of the graphite powder; the HCl concentration was 10%.
5. The method for preparing a graphene-coated aluminum foil according to claim 1, wherein: in the step S1-3, the using amount of the efficient graphene dispersing agent is 33wt% of the amount of the graphite powder; the perylene-3, 4,9, 10-tetracarboxylic dianhydride is used as a raw material, and is obtained by carrying out reflux reaction on the perylene-3, 4,9, 10-tetracarboxylic dianhydride and acrylate rubber in toluene and then carrying out formic acid treatment on the perylene-3, 4,9, 10-tetracarboxylic dianhydride.
6. The method for preparing a graphene-coated aluminum foil according to claim 5, wherein: the efficient graphene dispersant comprises the following components in parts by weight: 5-10 parts of perylene-3, 4,9, 10-tetracarboxylic dianhydride and 1-2 parts of acrylate rubber, and the perylene-3, 4,9, 10-tetracarboxylic dianhydride and the acrylate rubber are mixed and then introduced into a toluene solvent for reflux.
7. The method of manufacturing a graphene-coated aluminum foil according to claim 5 or 6, wherein: the reflux temperature is 100-110 ℃, and the concentration of formic acid for acidification is 5%.
8. The method for preparing a graphene-coated aluminum foil according to claim 1, wherein: in step S2-2, the weight ratio of the addition amount of the acrylic resin to the Graphene/sp slurry is 1: 1.
9. The method for preparing a graphene-coated aluminum foil according to claim 1, wherein: in step S2-4, the annealing process is performed under the protection of nitrogen and hydrogen, and the annealing temperature is 200 ℃.
10. The method of manufacturing a graphene-coated aluminum foil according to claim 1 or 9, wherein: the introduction amount of the nitrogen and the hydrogen for the annealing treatment is N2:H2=50sccm:50sccm。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911053750.4A CN110707328A (en) | 2019-10-31 | 2019-10-31 | Preparation method of graphene-coated aluminum foil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911053750.4A CN110707328A (en) | 2019-10-31 | 2019-10-31 | Preparation method of graphene-coated aluminum foil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110707328A true CN110707328A (en) | 2020-01-17 |
Family
ID=69203041
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911053750.4A Pending CN110707328A (en) | 2019-10-31 | 2019-10-31 | Preparation method of graphene-coated aluminum foil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110707328A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111534243A (en) * | 2020-05-08 | 2020-08-14 | 安徽格林开思茂光电科技股份有限公司 | Carbon-coated aluminum foil conductive adhesive tape for lithium battery and preparation method thereof |
| CN111909594A (en) * | 2020-08-11 | 2020-11-10 | 江苏万源新材料股份有限公司 | Molecular sieve coating aluminum foil with anticorrosion function and preparation process thereof |
| CN112259372A (en) * | 2020-09-25 | 2021-01-22 | 东莞市普隆电子有限公司 | Novel graphene coating aluminum foil capacitor |
| CN112853432A (en) * | 2021-02-05 | 2021-05-28 | 南京大学 | Preparation method of graphene/aluminum composite material heat dissipation film |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102916197A (en) * | 2012-10-29 | 2013-02-06 | 清华大学深圳研究生院 | Current collector, preparation method of current collector, lithium-ion battery electrode sheet and lithium-ion battery |
| CN104600320A (en) * | 2013-10-30 | 2015-05-06 | 上海悦达墨特瑞新材料科技有限公司 | Functional copper foil based on graphene and preparation method thereof |
| CN106467608A (en) * | 2016-10-11 | 2017-03-01 | 浙江大学常州工业技术研究院 | A kind of ylmethoxy Polyethylene Glycol, its preparation method and the graphene dispersion liquid and preparation method thereof based on base Polyethylene Glycol |
| CN109935837A (en) * | 2018-11-23 | 2019-06-25 | 万向一二三股份公司 | A kind of lithium ion battery carbon-coated aluminum foils |
| CN110034302A (en) * | 2019-03-28 | 2019-07-19 | 合肥国轩高科动力能源有限公司 | A kind of ultra-thin utter misery collector and preparation method thereof |
-
2019
- 2019-10-31 CN CN201911053750.4A patent/CN110707328A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102916197A (en) * | 2012-10-29 | 2013-02-06 | 清华大学深圳研究生院 | Current collector, preparation method of current collector, lithium-ion battery electrode sheet and lithium-ion battery |
| CN104600320A (en) * | 2013-10-30 | 2015-05-06 | 上海悦达墨特瑞新材料科技有限公司 | Functional copper foil based on graphene and preparation method thereof |
| CN106467608A (en) * | 2016-10-11 | 2017-03-01 | 浙江大学常州工业技术研究院 | A kind of ylmethoxy Polyethylene Glycol, its preparation method and the graphene dispersion liquid and preparation method thereof based on base Polyethylene Glycol |
| CN109935837A (en) * | 2018-11-23 | 2019-06-25 | 万向一二三股份公司 | A kind of lithium ion battery carbon-coated aluminum foils |
| CN110034302A (en) * | 2019-03-28 | 2019-07-19 | 合肥国轩高科动力能源有限公司 | A kind of ultra-thin utter misery collector and preparation method thereof |
Non-Patent Citations (3)
| Title |
|---|
| JUNSHUO CUI等: "Polyamine-functionalized perylene bisimide for dispersion of graphene in water with high effectiveness and little impact on electrical conductivity", 《JOURNAL OF NANOPARTICLE RESEARCH》 * |
| LI QUN XU等: "Functionalization of reduced graphene oxide nanosheets via stacking interactions with the fluorescent and water-soluble perylene bisimide-containing polymers", 《POLYMER》 * |
| 王汝冰: "石墨烯复合材料制备及其储能应用研究", 《中国博士学位论文全文数据库工程科技I辑》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111534243A (en) * | 2020-05-08 | 2020-08-14 | 安徽格林开思茂光电科技股份有限公司 | Carbon-coated aluminum foil conductive adhesive tape for lithium battery and preparation method thereof |
| CN111909594A (en) * | 2020-08-11 | 2020-11-10 | 江苏万源新材料股份有限公司 | Molecular sieve coating aluminum foil with anticorrosion function and preparation process thereof |
| CN112259372A (en) * | 2020-09-25 | 2021-01-22 | 东莞市普隆电子有限公司 | Novel graphene coating aluminum foil capacitor |
| CN112853432A (en) * | 2021-02-05 | 2021-05-28 | 南京大学 | Preparation method of graphene/aluminum composite material heat dissipation film |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110707328A (en) | Preparation method of graphene-coated aluminum foil | |
| CN111799464A (en) | MXene/graphene composite nanosheet, preparation method and application thereof, electrode plate and application thereof | |
| CN106129344B (en) | Preparation method of tin dioxide/titanium dioxide spherical particle and graphene nanoribbon composite material | |
| CN109873152B (en) | Graphene-silicon-based composite negative electrode material for lithium ion battery and preparation method thereof | |
| CN107170965B (en) | Silicon-carbon composite material and preparation method and application thereof | |
| CN107959027B (en) | Silicon-based negative electrode binder of lithium ion battery and preparation method of negative plate containing binder | |
| WO2017024720A1 (en) | Preparation method for high capacity lithium-ion battery negative electrode material | |
| EP2660199A1 (en) | Composite material of carbon-coated graphene oxide, preparation method and application thereof | |
| CN103035890A (en) | Silicon and graphene composite electrode material and preparation method thereof | |
| US20140113199A1 (en) | Nano-silicon composite lithium ion battery anode material coated with poly (3,4-ethylenedioxythiophene) as carbon source and preparation method thereof | |
| CN103050704B (en) | Porous conductive additive and preparation method thereof, lithium ion battery | |
| CN105845918B (en) | A kind of porous silica material of high power capacity and its preparation method and application | |
| CN105140490B (en) | A kind of flexible anode preparation method of lithium-sulfur cell | |
| CN108400297B (en) | Silicon-based lithium ion battery cathode material and preparation method thereof | |
| CN112421048A (en) | Method for preparing graphite-coated nano-silicon lithium battery negative electrode material at low cost | |
| CN110660987B (en) | Boron-doped hollow silicon spherical particle/graphitized carbon composite material and preparation method thereof | |
| WO2017107807A1 (en) | Method for fabricating lithium-ion battery cathode material and application thereof | |
| CN103991860A (en) | Nitrogen-doped graphene and preparation method thereof | |
| CN111697218A (en) | Silicon-carbon negative electrode material and preparation method thereof | |
| CN109574005B (en) | Preparation method of lithium-sulfur battery negative electrode biological carbon material | |
| CN107492658A (en) | A kind of titanium disulfide nanometer sheet and preparation method thereof | |
| CN103779084A (en) | Anode current collector and preparation method and application thereof | |
| CN114388738B (en) | Silicon-based anode material and preparation method and application thereof | |
| CN103413917B (en) | The preparation method of the lithium manganate cathode pole piece containing Graphene | |
| CN102887504A (en) | Method for preparing carbon material for lithium ion battery cathode |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200117 |
|
| RJ01 | Rejection of invention patent application after publication |