NEGATIVE ELECTRODE ACTIVE MATERIAL, MIXED NEGATIVE ELECTRODE ACTIVE MATERIAL SUBSTANCE, AND METHOD FOR PRODUCING NEGATIVE ELECTRODE ACTIVE MATERIAL

Title:

NEGATIVE ELECTRODE ACTIVE MATERIAL, MIXED NEGATIVE ELECTRODE ACTIVE MATERIAL SUBSTANCE, AND METHOD FOR PRODUCING NEGATIVE ELECTRODE ACTIVE MATERIAL

Document Type and Number:

WIPO Patent Application WO/2018/061536

Kind Code:

A1

Abstract:

The present invention is a negative electrode active material containing negative electrode active material particles, which is characterized in that: the negative electrode active material particles contain silicon compound particles containing a silicon compound (SiOx, wherein 0.5 ≤ x ≤ 1.6); the silicon compound particles contain an Li compound; and the negative electrode active material particles contain at least one salt selected from among polyacrylic acid salts and carboxymethyl cellulose salts, while containing a metal salt that contains at least one metal selected from among Mg and Al. Consequently, the present invention provides a negative electrode active material which is capable of stabilizing a slurry that is prepared during the production of a negative electrode of a secondary battery, and which is capable of improving the initial charge/discharge characteristics and the cycle characteristics when used as a negative electrode active material of a secondary battery.

Inventors:

HIROSE TAKAKAZU (JP)
TAKAHASHI KOHTA (JP)
MATSUNO TAKUMI (JP)
SAKAI REIKO (JP)

Application Number:

PCT/JP2017/030044

Publication Date:

April 05, 2018

Filing Date:

August 23, 2017

Export Citation:

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Assignee:

SHINETSU CHEMICAL CO (JP)

International Classes:

H01M4/48; C01B33/113; H01M4/36

Foreign References:

JP2016066529A	2016-04-28
JP2015156355A	2015-08-27
JP2016066508A	2016-04-28
JP2014103052A	2014-06-05

Other References: