公开(公告)号：US20210167394A1

公开(公告)日：2021-06-03

申请号：US16644734

申请日：2018-06-20

Applicant: Cornell University

Inventor： Lynden A. Archer ,  Zhengyuan Tu ,  Snehashis Choudhury ,  Shuya Wei ,  Qing Zhao ,  Dylan Vu

IPC: H01M4/62 ,  H01M4/36 ,  H01M4/38 ,  H01M10/052 ,  H01M10/0567

Abstract: Rechargeable batteries are disclosed having a protective membrane layer on surfaces of an electrode such as cathode active material. Such membranes include anionically charged groups and include an anionic membrane or a zwitterionic membrane. Such membranes can minimize contact of electrolyte to the surfaces of the active materials of the cathode where oxidation of electrolyte typically occurs thus promoting thermal stability of the electrolyte especially for high voltage batteries.