PARTICULATE COMPOSITE, ACTIVE MATERIAL AGGREGATE, CATHODE ACTIVE MATERIAL SUBSTANCE, CATHODE, SECONDARY BATTERY AND MANUFACTURING METHODS FOR SAME

WIPO Patent Application WO/2011/108465

A1

Disclosed is a particulate composite and the like capable of being a precursor for a small particle, low-crystalline lithium transition metal silicate compound. Also disclosed is a cathode active material substance, containing a lithium transition metal silicate compound, which demonstrates a charge/discharge reaction at room temperature. The composite comprises silicon oxide particles, transition metal oxide particles and lithium transition metal silicate particles, where the silicon oxide particles and transition metal oxide particles have powder X-ray diffraction peaks in the vicinity of 2θ = 33.1° and 2θ = 35.7° and are amorphous, and the lithium transition metal silicate particles are microcrystals. Further disclosed is a cathode active material substance obtained by powdering an active material aggregate produced by heat treating the particulate composite.

OHKUBO MICHIO (JP)
YAGI TAKESHI (JP)
SHIMADA MICHIHIRO (JP)
UNO NAOKI (JP)
HIRAYAMA YOSUKE (JP)
NISHIMURA TAKESHI (JP)
TANI TOSHIO (JP)

PCT/JP2011/054351

September 09, 2011

February 25, 2011

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FURUKAWA ELECTRIC CO LTD (JP)
OHKUBO MICHIO (JP)
YAGI TAKESHI (JP)
SHIMADA MICHIHIRO (JP)
UNO NAOKI (JP)
HIRAYAMA YOSUKE (JP)
NISHIMURA TAKESHI (JP)
TANI TOSHIO (JP)

H01M4/58; C01B33/12; H01M4/36

WO2008107571A2	2008-09-12
WO2010089931A1	2010-08-12

JP2011076793A	2011-04-14
JP2007335325A	2007-12-27
JP2009104794A	2009-05-14

INOUE, SEIICHI (JP)
Seiichi Inoue (JP)

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