Title:
NEGATIVE ELECTRODE MATERIAL FOR POWER STORAGE DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/021937
Kind Code:
A1
Abstract:
With the present invention, provided is a negative electrode material with which it is possible to obtain a power storage device in which the storage capacity is high, and a decrease in storage capacity due to repeated charging and discharging is suppressed. This negative electrode material for a power storage device comprises many particles. Each particle has a mother particle made of an Si based alloy, and a covering layer that covers this mother particle and is made of a carbon based material. This Si based alloy includes Si: 50 to 95 at% [inclusive], Cr: 5 to 20 at.% [inclusive], Ti: 5 to 20 at.% [inclusive], and element A: 0 to 10 at.% [inclusive]. Element A is one or more elements selected from the group consisting of V, Fe, Ni, Mo, Nb, Co, Al, and Sn.
Inventors:
HIRONO TOMOKI (JP)
SAWADA TOSHIYUKI (JP)
SAWADA TOSHIYUKI (JP)
Application Number:
PCT/JP2019/025079
Publication Date:
January 30, 2020
Filing Date:
June 25, 2019
Export Citation:
Assignee:
SANYO SPECIAL STEEL CO LTD (JP)
International Classes:
H01M4/38; H01G11/30; H01M4/36
Foreign References:
| JP2017228403A | 2017-12-28 | |||
| JP2015115140A | 2015-06-22 | |||
| JP2014186992A | 2014-10-02 | |||
| JP2015133320A | 2015-07-23 | |||
| JP2016225143A | 2016-12-28 |
Attorney, Agent or Firm:
TAKAMURA Masaharu et al. (JP)
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