POSITIVE ELECTRODE ACTIVE MATERIAL AND BATTERY

WIPO Patent Application WO/2006/095760

A1

Disclosed is a battery improved in load characteristics, low-temperature characteristics and high-temperature cycle characteristics. Specifically disclosed is a positive electrode (13) containing a lithium-cobalt complex oxide represented by Li_aCo_xMI_yMII_zO₂ (wherein MI represents at least one element selected from Al, Cr, V, Mn and Fe; MII represents at least one of Mg and Ca; and 0.9 ≤ a ≤ 1.1, 0.9 ≤ x < 1, 0.001 ≤ y ≤ 0.05, 0.001 ≤ z ≤ 0.05 and x + y + z = 1), and further containing Zr as a sub-component. The ratio of the Zr content relative to Co in the lithium-cobalt complex oxide (Zr/Co) is not less than 0.01 mol% but not more than 10 mol%.

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YONEZAWA KEI (JP)
SATO TAKASHI (JP)
OKAWA TSUYOSHI (JP)
YAMAMOTO YOSHIKATSU (JP)

PCT/JP2006/304445

September 14, 2006

March 08, 2006

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SONY CORP (JP)
YONEZAWA KEI (JP)
SATO TAKASHI (JP)
OKAWA TSUYOSHI (JP)
YAMAMOTO YOSHIKATSU (JP)

H01M4/02; H01M4/505; H01M4/525; H01M10/05; H01M10/0525; H01M10/0569

JP2002203553A	2002-07-19
JP2001319652A	2001-11-16
JP2005050779A	2005-02-24
JP2005129489A	2005-05-19
JP2005190900A	2005-07-14
JP2005285720A	2005-10-13
JP2005317499A	2005-11-10

Fujishima, Youichiro (9-5 Shinjuku 1-chom, Shinjuku-ku Tokyo 22, JP)

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