POSITIVE ACTIVE MATERIAL FOR SECONDARY BATTERY AND POSITIVE ELECTRODE FOR SECONDARY BATTERY USING THE SAME AND SECONDARY BATTERY

Title:

POSITIVE ACTIVE MATERIAL FOR SECONDARY BATTERY AND POSITIVE ELECTRODE FOR SECONDARY BATTERY USING THE SAME AND SECONDARY BATTERY

Document Type and Number:

Japanese Patent JP3675439

Kind Code:

B2

Abstract:

PROBLEM TO BE SOLVED: To provide a positive material for a lithium ion secondary battery that has high capacity and high energy density having a high voltage of 4.5 V or more to Li.
SOLUTION: In Li(NixMn2-x)O4 (where, 0.4≤x≤0.6), a part of Mn is substituted by a metal element that is lighter than Mn and is capable of taking on univalence to trivalence, and further, O is substituted by F or Cl.

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Inventors:

Ken Noguchi
Tatsuharu Numata
Daisuke Kawasaki

Application Number:

JP2002332535A

Publication Date:

July 27, 2005

Filing Date:

November 15, 2002

Export Citation:

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Assignee:

NEC

International Classes:

C01G53/00; H01M4/131; H01M4/1315; H01M4/505; H01M4/525; H01M10/05; H01M10/052; H01M10/0566; (IPC1-7): H01M4/58; H01M4/02; H01M10/40

Domestic Patent References:

JP2001319653A
JP2000323140A
JP2001068109A

Other References:

第41回電池討論会講演要旨集,2000年,2D19,p.458-459

Attorney, Agent or Firm:

Shinji Hayami

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