リチウム二次電池用正極活物質およびそれを使用したリチウム二次電池

Title:

リチウム二次電池用正極活物質およびそれを使用したリチウム二次電池

Document Type and Number:

Japanese Patent JP4639634

Kind Code:

B2

Abstract:

To provide a lithium secondary battery which keeps a high energy density and has a high reliability in high temperature operation, even if positive pole active materials are used that are charged and discharged at a voltage of 4.5 V or more.

The positive pole active material for the lithium secondary battery consisting of a complex oxide having a spinel structure which is expressed by a formula Lia[MmMn2-m-zZzXx]O4is used (in the formula, M expresses at least one transition metal selected from Ni, Cr, Fe, Co, and Cu, Z expresses at least one metal selected from Sr, Y, Zr, Ru, Rh, Pd, Ba, Hf, Ta, and W, and X expresses at least one element selected from Li, B, Na, Al, Mg, Si, and Ti, wherein 0≤a≤1, 0.4COPYRIGHT: (C)2006,JPO&NCIPI

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Inventors:

Ken Noguchi
Yamazaki Ikiko
Tatsuharu Numata

Application Number:

JP2004138753A

Publication Date:

February 23, 2011

Filing Date:

May 07, 2004

Export Citation:

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Assignee:

NEC

International Classes:

H01M4/505; H01M4/525; H01M10/05

Domestic Patent References:

JP11071115A

Attorney, Agent or Firm:

Akio Miyazaki
Masaaki Ogata
Ishibashi Masayuki

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