公开(公告)号：US20240097187A1

公开(公告)日：2024-03-21

申请号：US18269755

申请日：2021-12-16

Applicant: SHENZHEN CAPCHEM TECHNOLOGY CO., LTD.

Inventor： Yunxian Qian ,  Shiguang Hu ,  Guiyan Sun ,  Xionggui Lin ,  Yonghong Deng

IPC: H01M10/0567 ,  H01M4/525 ,  H01M4/62 ,  H01M10/0568 ,  H01M10/0569

CPC classification number: H01M10/0567 ,  H01M4/525 ,  H01M4/623 ,  H01M10/0568 ,  H01M10/0569 ,  H01M2004/028

Abstract: The existing positive electrode material that is doped or coated with compound has the problem OF ion dissolution and battery performance deterioration at high temperature. To solve it, the invention provides a lithium-ion battery, comprising a positive electrode, a negative electrode and a non-aqueous electrolyte, wherein the positive electrode comprises a positive electrode material layer, the positive electrode material layer comprises a positive electrode active material, and the positive electrode active material comprises LiMO2, where M is selected from one or more of Ni, Co and Mn, and the positive electrode active material is doped with a compound containing metal element A and/or coated with a compound containing metal element A, the non-aqueous electrolyte comprises a solvent, an electrolyte salt and a compound represented by Structural formula 1. The lithium-ion battery provided by the invention could effectively improve the overall stability of the material.

公开(公告)号：US20240178368A1

公开(公告)日：2024-05-30

申请号：US18010818

申请日：2022-11-16

Applicant: SHENZHEN CAPCHEM TECHNOLOGY CO., LTD.

Inventor： Yonghong Deng ,  Yunxian Qian ,  Shiguang Hu ,  Guiyan Sun ,  Xiaoxia Xiang ,  Xionggui Lin ,  Chaowei Cao

IPC: H01M4/134 ,  H01M10/0567

CPC classification number: H01M4/134 ,  H01M10/0567 ,  H01M2004/027 ,  H01M2300/0028

Abstract: The present application provides a secondary battery, including a positive electrode, a negative electrode with a negative electrode material layer, and a non-aqueous electrolyte, the negative electrode material layer comprises a negative electrode active material, and the negative electrode active material comprises a silicon-based material;
the non-aqueous electrolyte comprises a solvent, an electrolyte salt and an additive, the additives comprises a compound represented by structural formula 1;




wherein 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 at the same time, and X, R1 and R2 comprise at least one sulfur atom;








the secondary battery meets the following requirements:







0
.
2

⁢
1

≤


m
*
n
*
r

S

≤
40

;




and 40%≤m≤90%, 0.05%≤n≤2%, 1.2 g/cm3≤r≤1.8 g/cm3, 5%≤S≤30%.