公开(公告)号：US20240421355A1

公开(公告)日：2024-12-19

申请号：US18809341

申请日：2024-08-20

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Hansen Wang ,  Chengyong Liu ,  Shengyuan Huang ,  Bobing Hu ,  Zhangdi Xie ,  Shangju Liao

IPC: H01M10/0569 ,  H01M4/02 ,  H01M4/38 ,  H01M10/052

Abstract: Provided are a non-aqueous electrolyte, a secondary battery, a battery module, a battery pack, and an electrical device. The non-aqueous electrolyte includes orthocarbonate, chain carbonate, cyclic carbonate, and lithium salt, a mass content of the orthocarbonate is 10% to 80%, and at least one of the chain carbonate or the cyclic carbonate is fluoride. A central carbon atom of the orthocarbonate is bonded to four oxygen atoms, each of which is further bonded to an alkyl or halogenated alkyl chain, which plays an electron attraction role for lone pair electrons of the oxygen atoms, and increases steric hindrance surrounding the oxygen atoms, weakening the capability of the oxygen atoms in binding to lithium ions, and facilitating SEI film formation dominated by anion decomposition.