NEGATIVE ELECTRODE MATERIAL FOR SECONDARY BATTERY, AND SECONDARY BATTERY USING SAME

Title:

NEGATIVE ELECTRODE MATERIAL FOR SECONDARY BATTERY, AND SECONDARY BATTERY USING SAME

Document Type and Number:

WIPO Patent Application WO/2015/088283

Kind Code:

A1

Abstract:

The objective of the present invention is to provide an alloy particle for a negative active material, which is capable of inhibiting, at a significantly high level, oxidation by an electrolyte with respect to the negative active material, and to give oxidation resistance to the alloy particle comprising silicon. The objective is accomplished by a negative electrode material for a secondary battery, which is capable of occluding/releasing lithium and comprises an alloy particle comprising a silicon phase, a metal phase, and bismuth, wherein the size of the crystallite of the silicon phase is at most 10 ㎚, the metal phase comprises one or more kinds of metals that are alloyed with silicon but are not alloyed with lithium, and at least a primary particle by the silicon and the metal is formed.

Inventors:

MATSUBARA KEIKO (JP)
IGARASHI YOSHIYUKI (JP)
LEE MI-RIM (KR)
JUNG HYE-RAN (KR)
LEE YONG-JU (KR)

Application Number:

PCT/KR2014/012286

Publication Date:

June 18, 2015

Filing Date:

December 12, 2014

Export Citation:

Click for automatic bibliography generation Help

Assignee:

LG CHEMICAL LTD (KR)

International Classes:

H01M4/38; B22F9/00; H01M4/134; H01M10/052

Domestic Patent References:

WO2004109839A1

2004-12-16

Foreign References:

KR20080009269A	2008-01-28
KR100582343B1	2006-05-22
KR100388812B1	2003-06-25
KR101226245B1	2013-02-07
US6090505A	2000-07-18
JPH06325765A	1994-11-25
JP2001297764A	2001-10-26
JP2007165300A	2007-06-28

Other References: