Title:
NEGATIVE ELECTRODE ACTIVE MATERIAL CONTAINING OXYGEN-CONTAINING SILICON MATERIAL, AND METHOD FOR PRODUCING SAME
Document Type and Number:
WIPO Patent Application WO/2019/064728
Kind Code:
A1
Abstract:
Provided are: a negative electrode active material which contains a silicon material and makes it possible to modify the capacity maintenance rate of a secondary battery to a suitable value; and a method for producing the negative electrode active material. A negative electrode active material characterized by containing an oxygen-containing silicon material having an oxygen content (WO %) of 16 to 27% by mass exclusive (i.e., 16 < WO < 27) and a silicon content (WSi %) of 62 to 81% by mass exclusive (i.e., 62 < WSi < 81).
Inventors:
YAMAGUCHI YASUHIRO (JP)
IYAMA AYATO (JP)
MOHRI TAKASHI (JP)
HARATA MASANORI (JP)
WATANABE YUSUKE (JP)
OSHIMA HIROKI (JP)
IYAMA AYATO (JP)
MOHRI TAKASHI (JP)
HARATA MASANORI (JP)
WATANABE YUSUKE (JP)
OSHIMA HIROKI (JP)
Application Number:
PCT/JP2018/023079
Publication Date:
April 04, 2019
Filing Date:
June 18, 2018
Export Citation:
Assignee:
TOYOTA JIDOSHOKKI KK (JP)
International Classes:
H01M4/38; C01B33/113; H01M4/48
Domestic Patent References:
| WO2014080608A1 | 2014-05-30 | |||
| WO2007015419A1 | 2007-02-08 |
Foreign References:
| JP2016138029A | 2016-08-04 | |||
| JP2015106563A | 2015-06-08 | |||
| JP2011222151A | 2011-11-04 |
Attorney, Agent or Firm:
KYORITSU INTERNATIONAL (JP)
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