公开(公告)号：US20250062412A1

公开(公告)日：2025-02-20

申请号：US18721453

申请日：2022-12-07

Applicant: SHENZHEN CAPCHEM TECHNOLOGY CO., LTD.

Inventor： Yunxian Qian ,  Zhongbo Liu ,  Shiguang Hu ,  Yonghong Deng ,  Yong Wang ,  Xiong Huang

IPC: H01M10/0567 ,  H01M4/02 ,  H01M4/525 ,  H01M4/583 ,  H01M10/0568 ,  H01M10/0569

Abstract: A non-aqueous electrolyte is provided and includes an electrolyte salt, a non-aqueous organic solvent, and an additive. The non-aqueous organic solvent includes a carboxylate, and the additive comprises a compound represented by formula 1: where n is 0 or 1, A is selected from C or O, X is selected from R1 and R2 are each independently selected from H, R1 and R2 are not selected from H simultaneously, and X, R1 and R2 at least contain one sulfur atom. The non-aqueous electrolyte satisfies following conditions: 0.02≤an/m≤9, 0.01%≤a≤5%, 5%≤m≤70%, and 8%≤n≤25%; where a is a mass percentage content of the compound represented by the formula 1 in the non-aqueous electrolyte, in %; m is a mass percentage content of the carboxylate in the non-aqueous electrolyte, in %; and n is a mass percentage content of the electrolyte salt in the non-aqueous electrolyte, in %. A conductivity of the non-aqueous electrolyte at 25° C. is greater than or equal to 5 mS/cm.