POSITIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERIES, POSITIVE ELECTRODE FOR LITHIUM SECONDARY BATTERIES USING SAME, LITHIUM SECONDARY BATTERY, AND METHOD FOR PRODUCING POSITIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERIES

WIPO Patent Application WO/2014/017617

A1

Provided is a positive electrode active material for lithium secondary batteries, which uses a highly safe polyanion compound and has high capacity, high rate characteristics and high energy density. A positive electrode active material for lithium secondary batteries, which contains polyanion compound particles coated with carbon. This positive electrode active material for lithium secondary batteries is characterized in that: the polyanion compound has a structure represented by chemical formula (1); the roughness factor of the polyanion compound, said roughness factor being represented by formula (1), is 1-2; and the average primary particle diameter of the polyanion compound is 10-150 nm. LixMAyOz (chemical formula (1)) (In chemical formula (1), M comprises at least one transition metal element; A represents a typical element that combines with oxygen (O) and forms an anion; 0 < x ≤ 2, 1 ≤ y ≤ 2 and 3 ≤ z ≤ 7.)

KITAGAWA KAN (JP)
TAKANO SHUICHI (JP)
YUASA TOYOTAKA (JP)
TAKAHASHI SHIN (JP)
NAKABAYASHI TAKASHI (JP)
KOBAYASHI MITSURU (JP)

PCT/JP2013/070251

January 30, 2014

July 25, 2013

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HITACHI METALS LTD (JP)

H01M4/136; H01M4/36; H01M4/58; H01M10/052

WO2011013243A1	2011-02-03
WO2011129224A1	2011-10-20

JP2011249324A	2011-12-08
JP2011076820A	2011-04-14
JP2011216477A	2011-10-27
JP2012248378A	2012-12-13

POLAIRE I. P. C. (JP)
Polaire Intellectual Property Corporation (JP)

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