Title:
NEGATIVE ELECTRODE ACTIVE MATERIAL FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY AND METHOD FOR MANUFACTURING THE SAME
Document Type and Number:
Japanese Patent JP2020113465
Kind Code:
A
Abstract:
To provide a negative electrode active material which is high in stability against aqueous slurry, and enables the achievement of a high capacity, good cycle characteristics and a satisfactory initial efficiency.SOLUTION: A negative electrode active material for a nonaqueous electrolyte secondary battery comprises negative electrode active material particles. The negative electrode active material particles include silicon compound particles containing a silicon compound (SiOX: 0.5≤X≤1.6). The silicon compound particles contain at least one kind of amorphous silicon and microcrystal silicon. The negative electrode active material particles contain, as a Li compound, at least one kind of Li2SiO3 and Li2Si2O5. In the negative electrode active material particles, a compound having a zeolite crystalline structure deposits to a surface layer part of each negative electrode active material particle.SELECTED DRAWING: Figure 1
Inventors:
OSAWA YUSUKE
HIROSE KIICHI
TAKAHASHI KOTA
MATSUNO TAKUMI
HIROSE KIICHI
TAKAHASHI KOTA
MATSUNO TAKUMI
Application Number:
JP2019004237A
Publication Date:
July 27, 2020
Filing Date:
January 15, 2019
Export Citation:
Assignee:
SHINETSU CHEMICAL CO
International Classes:
H01M4/48; C01B33/113; C01B33/32; H01M4/36
Domestic Patent References:
| JP2015118879A | 2015-06-25 |
Foreign References:
| WO2017145654A1 | 2017-08-31 | |||
| WO2018061536A1 | 2018-04-05 | |||
| WO2018051710A1 | 2018-03-22 |
Attorney, Agent or Firm:
Mikio Yoshimiya
Toshihiro Kobayashi
Toshihiro Kobayashi