公开(公告)号：US20240396023A1

公开(公告)日：2024-11-28

申请号：US18695613

申请日：2022-09-08

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Yusuke Saito ,  Yosuke Sato ,  Shin Sato ,  Keita Okazaki

IPC: H01M4/36 ,  C01B33/32 ,  H01M4/02 ,  H01M4/58 ,  H01M4/62 ,  H01M10/42

Abstract: A negative electrode active material for a secondary battery includes composite particles each including a matrix, and a silicon phase dispersed in the matrix. Each of the composite particles is coated with a coating layer. The coating layer is a mixture of a carbon material and a fluorine-containing material.