公开(公告)号：US20240313263A1

公开(公告)日：2024-09-19

申请号：US18259300

申请日：2021-12-16

Applicant: Shenzhen Capchem Technology Co., Ltd.

Inventor： Shiguang Hu ,  Yunxian Qian ,  Chaowei Cao ,  Pengkai Guo ,  Xiaoxia Xiang ,  Chi Wang ,  Shuhuai Xiang ,  Qun Chen ,  Yonghong Deng

IPC: H01M10/0567 ,  C07D411/14 ,  H01M4/02 ,  H01M4/131 ,  H01M4/525 ,  H01M10/0525

CPC classification number: H01M10/0567 ,  C07D411/14 ,  H01M4/131 ,  H01M4/525 ,  H01M10/0525 ,  H01M2004/028 ,  H01M2300/0025

Abstract: A lithium-ion battery includes a positive electrode, a negative electrode, and a non-aqueous electrolyte. The positive electrode includes a positive electrode material layer, the positive electrode material layer includes a positive electrode active material, and the positive electrode active material includes LiNixCoyMnzL(1-x-y-2)O2, where L is Al, Sr, Mg. Ti, Ca, Zr, Zn, Si, Cu, V or Fe, 0.5≤x≤1, 0≤y≤0.5, 0≤z≤0.5, 0≤x+y+z≤1, and an upper limit voltage of the lithium-ion battery is ≥4.2 V. The non-aqueous electrolyte includes a solvent, an electrolyte salt and a compound represented by formula 1: A-D-B-E-C, Formula 1. Based on a total mass of the non-aqueous electrolyte as 100%, the compound represented by the formula 1 is added in an amount of 0.01 to 5.0%.

公开(公告)号：US20250087749A1

公开(公告)日：2025-03-13

申请号：US18580635

申请日：2022-06-20

Applicant: SHENZHEN CAPCHEM TECHNOLOGY CO., LTD.

Inventor： Shuhuai Xiang ,  Zhongcang Zhou ,  Yang Yi ,  Shiguang Hu

IPC: H01M10/0567 ,  H01M10/0525 ,  H01M10/0568 ,  H01M10/0569 ,  H01M10/42

Abstract: The application relates to the technical field of lithium ion batteries, in particular to a non-aqueous electrolyte and a lithium ion battery. In order to overcome the technical problem of poor high-temperature performance of the existing lithium ion battery, the application provides a non-aqueous electrolyte, comprising a solvent, a lithium salt and at least one of bicyclic compound represented by structural formulas 1-1 to 1-3: Meanwhile, the application also discloses a lithium ion battery comprising the non-aqueous electrolyte. The non-aqueous electrolyte and the lithium ion battery provided by the application can effectively improve the high-temperature cycle performance and high-temperature storage performance of battery.

公开(公告)号：US20240322242A1

公开(公告)日：2024-09-26

申请号：US18577680

申请日：2022-06-21

Applicant: SHENZHEN CAPCHEM TECHNOLOGY CO., LTD.

Inventor： Shuhuai Xiang ,  Yang Yi ,  Shiguang Hu ,  Yong Zhang

IPC: H01M10/0567 ,  C07F5/04 ,  H01M10/0525 ,  H01M10/0568 ,  H01M10/0569 ,  H01M10/42

CPC classification number: H01M10/0567 ,  C07F5/04 ,  H01M10/0525 ,  H01M10/0568 ,  H01M10/0569 ,  H01M10/4235 ,  H01M2300/004

Abstract: Provided is a non-aqueous electrolyte, comprising a solvent, an electrolyte salt and a compound represented by structural formula 1:




wherein, A, G and X are each independently selected from a cyclic sulfate group and its derivatives, a cyclic sulfonate group and its derivatives, a cyclic sulfite group and its derivatives or a group D; one or none of A, G and X is selected from the group D, and the group D is selected from a C1-C4 alkyl group, a C1-C4 unsaturated hydrocarbon group, a C1-C4 haloalkyl group, a C1-C4 nitrile group, a C1-C4 ether group or a C1-C4 ketone group. The application also provides a battery comprising the non-aqueous electrolyte. By adopting the above compound as an additive for the non-aqueous electrolyte, the film-forming quality of the surfaces of positive and negative electrodes can be effectively improved, and thus the battery performance is improved.