公开(公告)号：US20220069273A1

公开(公告)日：2022-03-03

申请号：US17007102

申请日：2020-08-31

Applicant: GM Global Technology Operations LLC

Inventor： Erik D. Huemiller ,  Nicholas P. Irish ,  Ryan C. Sekol ,  Dmitrity Bruder ,  Shaomao Xu ,  Jin Liu

IPC: H01M4/04 ,  H01M4/66 ,  H01M10/058

Abstract: A method of making a calendered electrode for a battery cell comprises introducing a coated electrode having a first surface extending thereover. The coated electrode has a predetermined density of active materials for ion transport. The method further comprises selectively modifying the coated electrode by patterning the first surface to define a patterned electrode having a first portion and a second portion. After the step of selectively modifying, the method further comprises compressing the patterned electrode by calendering the first surface to provide the first portion having a first density of active materials and the second portion having a second density of active materials. The second density is greater than the first density to define the calendered electrode having a spatial variation of active material density.