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Title:
NEGATIVE-ELECTRODE ACTIVE SUBSTANCE, MIXED NEGATIVE-ELECTRODE ACTIVE SUBSTANCE MATERIAL, AND METHOD FOR MANUFACTURING NEGATIVE-ELECTRODE ACTIVE SUBSTANCE
Document Type and Number:
WIPO Patent Application WO/2018/168196
Kind Code:
A1
Abstract:
The present invention provides a negative-electrode active substance that includes negative-electrode active substance particles, characterized in that: the negative-electrode active substance particles include silicon compound particles containing a silicon compound (SiOx: 0.5 ≤ x ≤ 1.6); and, in a spectrum obtained by 29Si-MAS-NMR of the silicon compound particles, the silicon compound particles have three or more peaks within a chemical shift range of -40 ppm to -120 ppm and do not have any peaks within a chemical shift range of -65 ± 3 ppm. As a result, a negative-electrode active substance that can improve cycle characteristics when used as the negative-electrode active substance of a secondary cell is provided.

Inventors:
HIROSE TAKAKAZU (JP)
TAKAHASHI KOHTA (JP)
MATSUNO TAKUMI (JP)
SAKAI REIKO (JP)
OSAWA YUSUKE (JP)
Application Number:
PCT/JP2018/001570
Publication Date:
September 20, 2018
Filing Date:
January 19, 2018
Export Citation:
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Assignee:
SHINETSU CHEMICAL CO (JP)
International Classes:
H01M4/48; H01M4/36
Domestic Patent References:
WO2015025443A12015-02-26
WO2016203696A12016-12-22
WO2016121324A12016-08-04
Foreign References:
JP2001185127A2001-07-06
JP2002042806A2002-02-08
JP2006164954A2006-06-22
JP2006114454A2006-04-27
JP2009070825A2009-04-02
JP2008282819A2008-11-20
JP2008251369A2008-10-16
JP2008177346A2008-07-31
JP2007234255A2007-09-13
JP2009212074A2009-09-17
JP2009205950A2009-09-10
JP2997741B22000-01-11
Other References:
CHUNHUI, GAO ET AL.: "Superior Cycling Performance of SiOx/C Composite with Arrayed Mesoporous Architecture as Anode Material for Lithium-Ion Batteries", JOURNAL OF THE ELECTROCHEMICAL SOCIETY, vol. 161, no. 14, 2014, pages A2216 - A2221, XP055542283
See also references of EP 3598542A4
Attorney, Agent or Firm:
YOSHIMIYA Mikio et al. (JP)
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