Production method of positive electrode active material for lithium secondary battery

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United States of America Patent

PATENT NO 8968594
APP PUB NO 20140203218A1
SERIAL NO

14223344

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Abstract

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A method is employed for producing a positive electrode active material for a lithium secondary battery that comprises mixing lithium phosphate having a particle diameter D90 of 100 μm or less, an M element-containing compound having a particle diameter D90 of 100 μm or less (where, M is one type or two or more types of elements selected from the group consisting of Mg, Ca, Fe, Mn, Ni, Co, Zn, Ge, Cu, Cr, Ti, Sr, Ba, Sc, Y, Al, Ga, In, Si, B and rare earth elements) and water, adjusting the concentration of the M element with respect to water to 4 moles/L or more to obtain a raw material, and producing olivine-type LiMPO4 by carrying out hydrothermal synthesis using the raw material.

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Patent Owner(s)

  • SHOWA DENKO K.K.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kabe, Isao Yokohama, JP 17 74
Oriji, Gaku Kawasaki, JP 11 61
Shirakawa, Akihiko Chiba, JP 28 166
Tonegawa, Akihisa Yokohama, JP 11 27

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