Contemporary Amperex Technology Co., Ltd.

Contemporary Amperex Technology (Hong Kong) Limited

Hao Dong

Ming Zhang

Qifan Wu

Ze Zhong

Huang Tang

De Lin

The present application discloses a secondary battery, a method for preparing the same, a copolymer and an apparatus. The secondary battery includes a binder for binding a first substance and a second substance, the binder including a copolymer, wherein the copolymer comprises at least a first monomer unit represented by formula (I), a second monomer unit represented by formula (II), and a third monomer unit represented by formula (III): The secondary battery provided by the present application can effectively increase the boding force between the first substance and the second substance by including a specific binder, thereby improving the electrochemical performance of the secondary battery.

Secondary battery, method for preparing the same, copolymer and apparatus

A secondary battery includes a positive electrode sheet which includes a positive-electrode current collector, a positive-electrode active material layer, and a coating layer arranged between the positive-electrode current collector and the positive-electrode active material layer. The coating layer includes a conductive agent and a copolymer.

Secondary battery, and battery module, battery pack, and device having same

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Ningde, China

Hao Dong