NONAQUEOUS ELECTROLYTE BATTERY - YUASA BATTERY CO LTD

Title:

NONAQUEOUS ELECTROLYTE BATTERY

Document Type and Number:

WIPO Patent Application WO/2004/102700

Kind Code:

A1

Abstract:

A nonaqueous electrolyte battery excelling in battery performance in high-temperature environment. In particular, a nonaqueous electrolyte battery including a positive electrode and a negative electrode and, interposed therebetween, a nonaqueous electrolyte containing at least one cyclic carbonate having a carbon to carbon &pgr bond and at least one cyclic organic compound having an S=O bond, characterized in that the main component of positive electrode active substance as a constituent of the positive electrode is an oxide firing product of lamellar rock salt crystal structure represented by the formula Li_m[Ni_bM_(1-b)O₂] (wherein M represents at least one element of Groups 1 to 16 excluding Ni, Li and O, and 0 ≤ m ≤ 1.1) wherein the value of b satisfies the relationship 0 < b < 1, especially an oxide firing product of lamellar rock salt crystal structure represented by the formula Li_m[Mn_aNi_bCo_cO₂] (wherein 0 ≤ m ≤ 1.1, a+b+c = 1, &Verbar a-b&Verbar ≤ 0.05, a≠0 and b≠0) wherein the value of c satisfies the relationship 0 ≤ c < 1.

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Inventors:

NAKAGAWA HIROE (JP)
INAMASU TOKUO (JP)
NUKUDA TOSHIYUKI (JP)

Application Number:

PCT/JP2004/003612

Publication Date:

November 25, 2004

Filing Date:

March 18, 2004

Export Citation:

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Assignee:

YUASA BATTERY CO LTD (JP)
NAKAGAWA HIROE (JP)
INAMASU TOKUO (JP)
NUKUDA TOSHIYUKI (JP)

International Classes:

H01M4/52; H01M4/525; H01M10/0569; H01M4/131; H01M4/50; H01M4/505; H01M4/58; H01M4/587; H01M10/0525; H01M10/0567; H01M10/36; (IPC1-7): H01M4/02; H01M4/48; H01M4/58; H01M10/40

Foreign References:

JP2002083632A	2002-03-22
JP2002329528A	2002-11-15
JP2003086249A	2003-03-20
JPH11121032A	1999-04-30
JP2001043895A	2001-02-16
JP2002025611A	2002-01-25
JP2002270230A	2002-09-20
JP2003077534A	2003-03-14
JP2003203673A	2003-07-18
JP2004087168A	2004-03-18
JP2004063144A	2004-02-26
JP2004063145A	2004-02-26

Attorney, Agent or Firm:

Matsumoto, Satoru (2-11 Nihonbashi 3-Chome, Chuo-K, Tokyo 27, JP)

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