LITHIUM ION SECONDARY CELL NEGATIVE ELECTRODE MATERIAL AND METHOD FOR MANUFACTURING SAME

Title:

LITHIUM ION SECONDARY CELL NEGATIVE ELECTRODE MATERIAL AND METHOD FOR MANUFACTURING SAME

Document Type and Number:

WIPO Patent Application WO/2016/017583

Kind Code:

A1

Abstract:

A lithium ion secondary cell negative electrode material is obtained in the present invention. The negative electrode material contains: particles (A) containing elements other than elemental carbon that are capable of storing and emitting lithium ions; graphite particles (B) that are capable of storing and emitting lithium ions, the median in the reference distribution for the primary particle aspect ratio as relates to the graphite particles (B) being 1.4-3.0; and carbon fibers (C). A three-dimensionally interwoven net structure is formed using one or more of the carbon fibers (C). The particles (A) are fused to the structure, and the structure is fused to at least a portion of the surface of the graphite particles (B). A lithium ion secondary cell is obtained using the negative electrode material.

Inventors:

KURITA TAKAYUKI (JP)
MATSUO AKIRA (JP)
ISHII NOBUAKI (JP)

Application Number:

PCT/JP2015/071249

Publication Date:

February 04, 2016

Filing Date:

July 27, 2015

Export Citation:

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Assignee:

SHOWA DENKO KK (JP)

International Classes:

H01M4/587; H01M4/36; H01M4/38; H01M4/62

Domestic Patent References:

WO2013114095A1	2013-08-08
WO2010038609A1	2010-04-08

Foreign References:

JP2005310760A	2005-11-04
JP2012501515A	2012-01-19
JP2012169259A	2012-09-06
JP2004182512A	2004-07-02

Other References: