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Title:
NEGATIVE-ELECTRODE ACTIVE SUBSTANCE, MIXED NEGATIVE-ELECTRODE ACTIVE SUBSTANCE MATERIAL, AND METHOD FOR MANUFACTURING NEGATIVE-ELECTRODE ACTIVE SUBSTANCE PARTICLES
Document Type and Number:
WIPO Patent Application WO/2018/221268
Kind Code:
A1
Abstract:
The present invention is a negative-electrode active substance containing negative-electrode active substance particles, the negative-electrode active substance being characterized in that the negative-electrode active substance particles comprise silicon compound particles containing an oxygen-containing silicon compound, the silicon compound particles comprise a Li compound, and at least a portion of the Si constituting the silicon compound particles is present in the form of a Si2+ - Si3+ oxide not containing Li and/or in the form of a compound containing Li and Si2+ - Si3+. Also provided is a method for manufacturing negative-electrode active substance particles, the method being capable of manufacturing: a negative-electrode active substance which, when used as a negative-electrode active substance in a secondary battery, is capable of increasing the battery capacity and enhancing cycle characteristics and initial charge/discharge characteristics; a mixed negative-electrode active substance material containing this negative-electrode active substance; and negative-electrode active substance particles contained in a negative-electrode active substance such as that described above.

Inventors:
HIROSE Takakazu (SHIN-ETSU CHEMICAL CO.LTD., 1-10, Hitomi, Matsuida-machi, Annaka-sh, Gunma 24, 〒3790224, JP)
MATSUNO Takumi (SHIN-ETSU CHEMICAL CO.LTD., 1-10, Hitomi, Matsuida-machi, Annaka-sh, Gunma 24, 〒3790224, JP)
SAKAI Reiko (SHIN-ETSU CHEMICAL CO.LTD., 1-10, Hitomi, Matsuida-machi, Annaka-sh, Gunma 24, 〒3790224, JP)
TAKAHASHI Kohta (SHIN-ETSU CHEMICAL CO.LTD., 1-10, Hitomi, Matsuida-machi, Annaka-sh, Gunma 24, 〒3790224, JP)
AWANO Hidekazu (SHIN-ETSU CHEMICAL CO.LTD., 1-10, Hitomi, Matsuida-machi, Annaka-sh, Gunma 24, 〒3790224, JP)
Application Number:
JP2018/019271
Publication Date:
December 06, 2018
Filing Date:
May 18, 2018
Export Citation:
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Assignee:
SHIN-ETSU CHEMICAL CO.,LTD. (6-1 Ohtemachi 2-chome, Chiyoda-ku Tokyo, 04, 〒1000004, JP)
International Classes:
H01M4/48; H01M4/36; H01M4/38; H01M4/485
Domestic Patent References:
WO2017085911A12017-05-26
WO2015015795A12015-02-05
Foreign References:
JP2016042487A2016-03-31
JP2012256539A2012-12-27
JP2015056260A2015-03-23
JP2018006190A2018-01-11
JP2006244813A2006-09-14
JP2017027959A2017-02-02
JP2016530189A2016-09-29
Attorney, Agent or Firm:
YOSHIMIYA Mikio et al. (1st Shitaya Bldg. 8F, 6-11 Ueno 7-chome, Taito-k, Tokyo 05, 〒1100005, JP)
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