Negative electrode sheet and battery
AssigneeEve Power Co., Ltd.
InventorMengyuan WANG
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Abstract
A negative electrode sheet and a battery are provided in the disclosure. The negative electrode sheet includes a negative electrode current collector and a coating. The coating includes an inner layer and an outer layer. The inner layer is close to a surface of the negative electrode current collector, and the outer layer is away from the surface of the negative electrode current collector. A first negative electrode active material in the inner layer includes a silicon-based negative electrode material, and a second negative electrode active material in the outer layer includes a carbon-based negative electrode material.
Claims20
A negative electrode sheet, comprising a negative electrode current collector and a coating, wherein the coating comprises an inner layer and an outer layer, the inner layer is close to a surface of the negative electrode current collector, and the outer layer is away from the surface of the negative electrode current collector, wherein
- a first negative electrode active material in the inner layer comprises a silicon-based negative electrode material, the silicon-based negative electrode material comprises at least one of silicon oxide, silicon carbide, nano silicon, or a silicon alloy;
- and
- a second negative electrode active material in the outer layer comprises a carbon-based negative electrode material, the carbon-based negative electrode material comprises at least one of natural graphite, artificial graphite, hard carbon, soft carbon, mesocarbon microbeads, or graphene.
A battery, comprising a negative electrode sheet, a positive electrode sheet, an electrolyte, and a separator, wherein the negative electrode sheet comprises a negative electrode current collector and a coating, wherein the coating comprises an inner layer and an outer layer, the inner layer is close to a surface of the negative electrode current collector, and the outer layer is away from the surface of the negative electrode current collector, wherein
- a first negative electrode active material in the inner layer comprises a silicon-based negative electrode material, the silicon-based negative electrode material comprises at least one of silicon oxide, silicon carbide, nano silicon, or a silicon alloy;
- and
- a second negative electrode active material in the outer layer comprises a carbon-based negative electrode material, the carbon-based negative electrode material comprises at least one of natural graphite, artificial graphite, hard carbon, soft carbon, mesocarbon microbeads, or graphene.
Dependencies are inferred from the claim text.