Title:
METHOD OF MANUFACTURING NEGATIVE ELECTRODE ACTIVE MATERIAL FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2020/003692
Kind Code:
A1
Abstract:
The present invention is a method of manufacturing a negative electrode active material for a nonaqueous electrolyte secondary battery that comprises silicon compound particles containing lithium, the method being characterized by including a step of preparing silicon compound particles containing a silicon compound (SiOx:0.5≤x≤1.6), a step of mixing a lithium compound with the silicon compound particles to form a mixed material, and a step of firing the mixed material in the presence of inert gas containing oxygen in an amount of 1000 ppm or less, whereby a negative electrode active material for a nonaqueous electrolyte secondary battery that comprises the silicon compound particles containing lithium is manufactured. Thus, the method of manufacturing a negative electrode active material for a nonaqueous electrolyte secondary battery which has good initial efficiency is provided.
Inventors:
AWANO HIDEKAZU (JP)
MATSUNO TAKUMI (JP)
MATSUNO TAKUMI (JP)
Application Number:
PCT/JP2019/015575
Publication Date:
January 02, 2020
Filing Date:
April 10, 2019
Export Citation:
Assignee:
SHINETSU CHEMICAL CO (JP)
International Classes:
H01M4/48; H01M4/36; H01M4/58
Domestic Patent References:
| WO2006025347A1 | 2006-03-09 |
Foreign References:
| JP2017092009A | 2017-05-25 | |||
| JP2003160328A | 2003-06-03 | |||
| JP2017174803A | 2017-09-28 | |||
| JP2017010645A | 2017-01-12 | |||
| JPH07146066A | 1995-06-06 | |||
| JPH10321452A | 1998-12-04 | |||
| JP2003123755A | 2003-04-25 | |||
| JP2002356314A | 2002-12-13 |
Attorney, Agent or Firm:
YOSHIMIYA Mikio et al. (JP)
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