公开(公告)号：US20230361352A1

公开(公告)日：2023-11-09

申请号：US18347184

申请日：2023-07-05

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Zeli WU ,  Changlong HAN ,  Cuiping ZHANG ,  Bin JIANG ,  Zhiyong AI ,  Lei HUANG

IPC: H01M10/0569 ,  H01M10/0525 ,  H01M10/0568 ,  H01M10/0567 ,  H01M4/525

CPC classification number: H01M10/0569 ,  H01M10/0525 ,  H01M10/0568 ,  H01M10/0567 ,  H01M4/525 ,  H01M2004/028

Abstract: The present application discloses a lithium-ion battery, which has a positive electrode sheet, a negative electrode sheet, a separator, and an electrolyte solution comprising a lithium salt and a solvent, wherein based on the total weight of the electrolyte solution, the percentage by mass of the lithium salt in the electrolyte solution is a %, and the lithium ion battery satisfies 5≤a≤10; and the load on single side of the negative electrode sheet is W grams per 1540.25 mm2, and a and W satisfy 25≤a/W≤50; and the solvent comprises dimethyl carbonate. The lithium ion battery has good safety and high-temperature cycling performance, and also has good kinetic performance.