公开(公告)号：US20230109890A1

公开(公告)日：2023-04-13

申请号：US17912970

申请日：2021-01-26

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Kyohei Sakamoto ,  Nobuhiko Hojo ,  Masaki Hasegawa

IPC: H01M4/62 ,  H01M4/38

Abstract: This negative electrode for secondary batteries is provided with a negative electrode mixture that contains a negative electrode active material, an additive and a conductive agent. The negative electrode active material contains an Si-containing material; the additive contains an alkali metal sulfate salt; and the conductive agent contains carbon nanotubes. The content of the alkali metal sulfate salt in the negative electrode mixture is from 0.0025% by mass to 0.1% by mass relative to the total mass of the negative electrode active material.