Contemporary Amperex Technology Co., Ltd.

Xing Ji

Ting Li

The electrode sheet includes a current collector, an active material layer, a first insulating layer, and a second insulating layer. The current collector includes a body portion and a tab extending from a first end of the body portion. The body portion includes a coated region and a transition region provided between the coated region and the tab; the active material layer is provided on a surface of the coated region; the first insulating layer is provided on an end surface of the body portion; at least part of the second insulating layer is provided on a surface of the transition region; the second insulating layer includes a first thermoplastic polymer and a second thermoplastic polymer.

Electrode sheet and preparation method therefor, battery cell, battery, and electric device

An electrode sheet, a preparation method, a battery cell, a battery, and an electric device are provided. The electrode sheet includes a current collector having a main body and a tab extending from a first end of the main body in a first direction. The main body includes a coated region and a transition region located between the coated region and the tab. An active material layer is formed on the coated region. A first insulating layer is disposed on the end face of the first end. A second insulating layer is at least partially disposed on the surface of the transition region and includes a thermoplastic polymer. The thermoplastic polymer has a volumetric particle size distribution DV50 of 6-10 μm and a maximum particle size Dmax of 90-110 μm. The electrode sheet improves the reliability of the battery cell.

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Ningde, China

Xing Ji