Electrode piece and battery
AssigneeZhuhai Cosmx Battery Co., Ltd.
InventorsShuanghu ZHANG, Jian ZHANG, Leiming SUN
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Abstract
Disclosed are an electrode piece and a battery. The electrode piece includes a current collector and a functional layer located on a first surface of the current collector, the first surface is provided with a tab, and the functional layer is composed of a normal area away from the tab and a recessed area near the tab, and a thickness of the recessed area is less than a thickness of the normal area. The present disclosure can effectively prevent problems such as excessive thickness of part of a cell near the tab, thereby improving battery qualities such as safety and charging/discharging rate.
Claims20
An electrode piece, comprising a current collector and a functional layer located on a first surface of the current collector, wherein the first surface is provided with a tab, the functional layer on the first surface is composed of a normal area away from the tab and a recessed area close to the tab, and a thickness of the recessed area is less than a thickness of the normal area.
Dependencies are inferred from the claim text.