NEGATIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM ION SECONDARY BATTERY, AND LITHIUM ION SECONDARY BATTERY

Title:

NEGATIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM ION SECONDARY BATTERY, AND LITHIUM ION SECONDARY BATTERY

Document Type and Number:

WIPO Patent Application WO/2010/098452

Kind Code:

A1

Abstract:

Disclosed is a negative electrode active material for a lithium ion secondary battery, which is capable of further improving the charge/discharge cycle characteristics. Also disclosed is a lithium ion secondary battery which uses the negative electrode active material for a lithium ion secondary battery. The negative electrode active material for a lithium ion secondary battery is composed of composite particles each of which has a core/shell structure configured of a core part that is formed from a polymer and a shell part that is formed of a metal layer. The metal layer of the shell part is formed by metal plating. Preferably, the metal layer comprises at least a metal layer (a1) that is formed by electroless plating and a metal layer (a2) that is formed by electrolytic plating, in this order from the core part side.

Inventors:

WAKIZAKA YASUHIRO (JP)
SUGIMOTO TAKUMI (JP)

Application Number:

PCT/JP2010/053111

Publication Date:

September 02, 2010

Filing Date:

February 26, 2010

Export Citation:

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Assignee:

ZEON CORP (JP)
WAKIZAKA YASUHIRO (JP)
SUGIMOTO TAKUMI (JP)

International Classes:

H01M4/38; H01M4/134; H01M4/1395; H01M4/36; H01M10/052; H01M10/0566

Domestic Patent References:

WO2008132933A1

2008-11-06

Foreign References:

JP2007123100A	2007-05-17
JP2007311057A	2007-11-29
JPH10162823A	1998-06-19
JP2007123100A	2007-05-17

Other References: