Title:
非水電解質二次電池用負極活物質
Document Type and Number:
Japanese Patent JP6477713
Kind Code:
B2
Abstract:
There is provided a negative electrode active material for a nonaqueous electrolyte secondary battery, the negative electrode active material including a base particle containing Si and SiO2, a mixed phase coating that covers a surface of the base particle and contains SiO2 and carbon, and a carbon coating that covers a surface of the mixed phase coating. The base particle is preferably formed of SiOX (0.5≤X≤1.5). The mixed phase coating preferably contains carbon dispersed in a phase formed of SiO2. The cycle characteristics of a nonaqueous electrolyte secondary battery including negative electrode active material particles containing Si and SiO2 are improved.
Inventors:
Meiraku Tatsuya
Hiroyuki Minami
Taizo Sunano
Yoshio Kato
Hiroyuki Minami
Taizo Sunano
Yoshio Kato
Application Number:
JP2016546292A
Publication Date:
March 06, 2019
Filing Date:
August 21, 2015
Export Citation:
Assignee:
Sanyo Electric Co., Ltd.
International Classes:
H01M4/36; H01M4/48
Domestic Patent References:
JP2011060676A | ||||
JP2008153117A | ||||
JP2006092969A | ||||
JP2005123175A |
Foreign References:
WO2015098024A1 | ||||
WO2014098419A1 | ||||
WO2014119256A1 |
Attorney, Agent or Firm:
Tokuda Yoshiaki
Hiroki Nishida
Hiroki Nishida