COMPOSITE FOR ELECTRODE ACTIVE MATERIAL AND SECONDARY BATTERY COMPRISING THE SAME

WIPO Patent Application WO/2010/114287

A2

The present invention relates to a composite usable as electrode active materials for a secondary battery and a secondary battery using the same, wherein the composite comprises: a 1st material selected from a metal and metalloid which can alloy reversibly with lithium; a 2nd material selected from a group consisting of a metal which is impossible to alloy with lithium, a compound containing the metal, and a compound containing a metal or metalloid which can alloy irreversibly with lithium; and a 3rd material having higher electrical conductivity than that of the 2nd material, the 3rd material being 10-10,000 ppm on the basis of total weight of the composite. The electrical conductivity of the composite according to the present invention increases due to the 3rd material and electrical conductive paths are formed between the materials therein, and thus the volume variation of the composite is uniform at the time of charging and discharging, and as a result, the thickness variation of electrodes can be minimized and in addition if this composite is used for a secondary battery, the life characteristics of the battery can be improved.

LEE YONGJU (KR)
UHM INSUNG (KR)
CHOI SEUNGYOUN (KR)
KIM JEYOUNG (KR)
JUNG DONG SUB (KR)

PCT/KR2010/001942

October 07, 2010

March 30, 2010

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LG CHEMICAL LTD (KR)
LEE YONGJU (KR)
UHM INSUNG (KR)
CHOI SEUNGYOUN (KR)
KIM JEYOUNG (KR)
JUNG DONG SUB (KR)

H01M4/52; H01M4/38; H01M4/58

KR20070059389A	2007-06-12
KR20070082784A	2007-08-22

None
See also references of EP 2416410A4

HAM, Hyun-Kyung (Kukdong Building 60-1,Chungmuro3-ka, Chung-ku, Seoul 100-705, KR)

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