Negative electrode sheet and preparation method therefor, secondary battery, and electric device
AssigneeContemporary Amperex Technology Co., Limited
InventorsYuquan Ai, Chengfeng Li
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Abstract
A positive electrode sheet and a preparation method therefor, a secondary battery, and an electric device. The negative electrode sheet includes a negative electrode current collector, an active material layer, and a passivation layer, where the active material layer is provided between the negative electrode current collector and the passivation layer; the active material layer includes a negative electrode active material, the passivation layer includes ion resin, and the ion resin includes one or more of carboxymethyl cellulose and a metal salt of carboxymethyl cellulose.
Claims19
A negative electrode sheet, comprising a negative electrode current collector, an active material layer, and a passivation layer;
- wherein the active material layer is provided between the negative electrode current collector and the passivation layer;
- and
- wherein the active material layer comprises a negative electrode active material, the passivation layer comprises ion resin, and the ion resin comprises one or more of carboxymethyl cellulose and a metal salt of carboxymethyl cellulose, and a weight-average molecular weight of the ion resin is 70000-250000 Da.
Dependencies are inferred from the claim text.