Graphene-coated silicon material, electric arc preparation method and application thereof
The invention relates to a graphene-coated silicon material, an electric arc preparation method and application thereof, and relates to the field of lithium ion negative electrode materials, and the preparation method comprises the following steps: S1, preparing a positive electrode and a negative e...
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| creator | CUI WEIGUO LIU JUNCHEN FEI PENGYANG JIANG ZHIGUO |
| description | The invention relates to a graphene-coated silicon material, an electric arc preparation method and application thereof, and relates to the field of lithium ion negative electrode materials, and the preparation method comprises the following steps: S1, preparing a positive electrode and a negative electrode: pressing graphite powder into the negative electrode; graphite powder and a silicon-based material are mixed, then a binder is added, the mixture is mixed evenly and pressed into an anode, and the weight ratio of the graphite powder to the silicon-based material to the binder in the anode is (1-4): (0.1-2.6): (0.125-0.4); and S2, graphene in-situ coating: applying a certain voltage between the cathode and the anode under a certain atmosphere and pressure to generate arc discharge between the cathode and the anode, so that the generated graphene in-situ coats the silicon material in the anode, and the graphene-coated silicon material is obtained. The graphene-coated silicon material is generated in situ by |
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| subjects | BASIC ELECTRIC ELEMENTS CHEMICAL SURFACE TREATMENT CHEMISTRY COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL DIFFUSION TREATMENT OF METALLIC MATERIAL ELECTRICITY INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL METALLURGY PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION |
| title | Graphene-coated silicon material, electric arc preparation method and application thereof |
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