公开(公告)号：US20230299356A1

公开(公告)日：2023-09-21

申请号：US18321794

申请日：2023-05-23

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Zeli Wu ,  Changlong Han ,  Lei Huang ,  Zhiyong Ai

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

CPC classification number: H01M10/0567 ,  H01M10/0525 ,  H01M10/0569 ,  H01M2220/20 ,  H01M2300/0042 ,  H01M2300/0051

Abstract: A method for preparing an SEI (solid electrolyte interphase)-like film component additive, and an electrolyte solution comprising the SEI-like film component additive prepared by the method are provided. Compared with a conventional electrolyte solution (electrolyte solution without adding SEI-like film component additive), the electrolyte solution of the present application can prevent the loss of the effective ingredients caused by the dissolution of the SEI film on the negative electrode in the electrolyte solution during battery storage and use, and the electrolyte solution of the present application can also timely supplement the lost or damaged SEI film with effective ingredients, so that the damaged parts of the SEI film are quickly and timely supplemented.