コバルト酸リチウム及びその製造方法並びに非水電解質ニ次電池

Title:

コバルト酸リチウム及びその製造方法並びに非水電解質ニ次電池

Document Type and Number:

Japanese Patent JP4114918

Kind Code:

B2

Abstract:

To provide lithium cobaltate which is excellent in load characteristics and blister inhibition and is useful as a positive electrode active material in a non-aqueous electrolyte secondary battery, its preparation process, and a non-aqueous electrolyte secondary battery using a positive electrode active material containing the same.

The lithium cobaltate is obtained from cobalt oxyhydroxide and a lithium compound and has an average particle size of 10-15 μm and a residual lithium carbonate content of ≤0.1 wt.%. In the preparation method of the lithium cobaltate, cobalt oxyhydroxide having an angle of repose of ≤50° and a tap density of 1.3-1.8 g/cm3is mixed with the lithium compound and subsequently baked.

Inventors:

Katsuyuki Negishi
Hidekazu Awano
Yoshio Oishi
Nobuyuki Yamazaki

Application Number:

JP2002367952A

Publication Date:

July 09, 2008

Filing Date:

December 19, 2002

Export Citation:

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Assignee:

Nippon Chemical Industry Co., Ltd.

International Classes:

C01G51/00; H01M4/131; H01M4/525; H01M10/05

Domestic Patent References:

JP2001155729A
JP2001307729A
JP2003002661A
JP2002060225A
JP2002042811A
JP11273678A

Foreign References:

WO2001027032A1

Attorney, Agent or Firm:

Kenji Akatsuka

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