Binder and application thereof
AssigneeDongguan Amperex Technology Limited
InventorsSuchiao Chu, Baoxiao Cheng, Lei Yu, Jiawen Li
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Abstract
A binder includes a polyethyleneimine salt and a carboxylate salt polymer. The binder of this application can effectively release stress and maintain the integrity of a molecular network during expansion of particles of a negative active material, thereby exhibiting advantages of both high strength and high toughness, effectively reducing disruption of a bonding interface, and improving cycle performance of the electrochemical device.
Claims20
A binder, wherein the binder comprises a polyethyleneimine salt and a carboxylate salt polymer.
An electrochemical device comprising a negative electrode plate, the negative electrode plate comprises a negative current collector and a negative active material layer disposed on at least one surface of the negative current collector;
- wherein the negative active material layer comprises a binder, the binder comprises a polyethyleneimine salt and a carboxylate salt polymer.
An electronic device, comprising an electrochemical device, the electrochemical device comprises a negative electrode plate, the negative electrode plate comprises a negative current collector and a negative active material layer disposed on at least one surface of the negative current collector;
- wherein the negative active material layer comprises a binder, the binder comprises a polyethyleneimine salt and a carboxylate salt polymer.
Dependencies are inferred from the claim text.