METHOD FOR MANUFACTURING POSITIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM SECONDARY CELL, POSITIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM SECONDARY CELL, AND LITHIUM SECONDARY CELL

WIPO Patent Application WO/2012/147837

A1

The present invention provides a method for manufacturing a positive electrode active material for a lithium secondary cell made of a complex composed an olivine-type lithium metal phosphate and carbon, and that can achieve high capacity and good discharge rate characteristics. This method for manufacturing a positive electrode active material for a lithium secondary cell is characterized in having: a step for measuring the composition ratio of a phosphate compound represented by composition formula LiMPO4 (where element M is Fe, Mn, or one or more transition metals among Ti, V, Cr, Co, Ni, Nb, Ta, Mo, and W) and specifying an element for which the composition ratio does not reach Li:M:P = 1:1:1; a step for kneading a lithium source, a metal (M) source, or a phosphate source as an element source corresponding to the specified element, the phosphate compound, and a carbonaceous material or a carbonaceous material precursor to obtain a first carbon-containing mixture; and a step for baking the first carbon-containing mixture.

ORIJI GAKU (JP)
SHIRAKAWA AKIHIKO (JP)
KABE ISAO (JP)
INOSE TSUYOSHI (JP)
TONEGAWA AKIHISA (JP)

PCT/JP2012/061182

November 01, 2012

April 26, 2012

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SHOWA DENKO KK (JP)
ORIJI GAKU (JP)
SHIRAKAWA AKIHIKO (JP)
KABE ISAO (JP)
INOSE TSUYOSHI (JP)
TONEGAWA AKIHISA (JP)

H01M4/58; C01B25/45; H01M4/36

JP2011100625A	2011-05-19
JP2010218884A	2010-09-30

SHIGA Masatake et al. (JP)
Masatake Shiga (JP)

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