公开(公告)号：US12283658B2

公开(公告)日：2025-04-22

申请号：US17472802

申请日：2021-09-13

Applicant: Ningde Amperex Technology Limited

Inventor： Chenxi Jiang

IPC: H01M10/0562 ,  H01M4/02 ,  H01M4/38 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0585

Abstract: An electrochemical apparatus includes a positive electrode plate including a positive electrode active material layer; a negative electrode plate including a negative electrode active material layer; and a separator disposed between the positive electrode plate and the negative electrode plate. A mass ratio of fluorine to sulfur in a surface layer of the positive electrode active material layer is A, and a mass ratio of fluorine to sulfur in a surface layer of the negative electrode active material layer is B, where 30≤A≤300, and 5≤B≤50.

公开(公告)号：US20220200050A1

公开(公告)日：2022-06-23

申请号：US17560628

申请日：2021-12-23

Applicant: Ningde Amperex Technology Limited

Inventor： Chenxi Jiang ,  Yafei Zhang ,  Hongming Yu ,  Xinghua Tao

IPC: H01M10/0567 ,  H01M10/0525

Abstract: An electrochemical apparatus includes a positive electrode sheet including a positive electrode active material layer; a negative electrode sheet including a negative electrode active material layer; and a separator disposed between the positive electrode sheet and the negative electrode sheet. A mass ratio of fluorine to nitrogen on a surface layer of the positive electrode active material layer is A, a mass ratio of fluorine to nitrogen on a surface layer of the negative electrode active material layer is B, 3≤A≤50, and 30≤B≤300.