公开(公告)号：US20230231117A1

公开(公告)日：2023-07-20

申请号：US18191888

申请日：2023-03-29

Applicant: SoftBank Corp. ,  Enpower Japan Corp.

Inventor： Yoshiki TAKAYANAGI ,  Takaya SAITO ,  Shuntaro MIYAKAWA ,  Yong CHE ,  Tsutomu TAKAHASHI ,  Fandong MENG

IPC: H01M4/36 ,  H01M4/40 ,  H01M4/04 ,  H01M10/0569 ,  H01M10/44 ,  H01M4/58

CPC classification number: H01M4/366 ,  H01M4/405 ,  H01M4/0404 ,  H01M10/0569 ,  H01M10/446 ,  H01M4/58 ,  H01M2004/027

Abstract: A negative electrode material that is used for a negative electrode of a lithium secondary battery containing a non-aqueous electrolyte solution, includes: a first layer that contains lithium metal as a negative electrode active material; and a second layer that is arranged on at least one surface of the first layer. The second layer consists of a compound represented by a general formula MxAy (M is an element selected from a group consisting of Al, In, Mg, Ag, Si, and Sn, and A is an element selected from a group consisting of O, N, P, and F, and 0.3