Title:
MANGANESE OXIDE FOR POSITIVE ELECTRODE ACTIVE MATERIAL
Document Type and Number:
WIPO Patent Application WO/2005/100250
Kind Code:
A1
Abstract:
A manganese oxide capable of realizing a high-rate performance superior to that of the prior art. There is provided a manganese oxide of the composition formula: MnSaHbMexOc·zH2O (wherein Me is one of Ti, Ca, Mg and Ln or a combination thereof), characterized in that a is in the range of 0.005 to 0.015, b in the range of 0.3 to 0.5, c in the range of 1.8 to 2.3, x 0 or >0 but ≤0.015, and z >0. Preferably, there is provided a manganese oxide wherein the ratio of H to S, b/a, is in the range of 2 to 100. Through incorporation of given amounts of S and H in the manganese oxide, proton (H+) is fed directly and rapidly from the interior of the manganese oxide at the time of discharge reaction, so that even under high load, it becomes easy to follow the discharge reaction (high-rate discharge).
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Inventors:
KAGEI SHINYA (JP)
OCHI YASUHIRO (JP)
HATA YOSHIMI (JP)
OCHI YASUHIRO (JP)
HATA YOSHIMI (JP)
Application Number:
PCT/JP2005/000229
Publication Date:
October 27, 2005
Filing Date:
January 12, 2005
Export Citation:
Assignee:
MITSUI MINING & SMELTING CO (JP)
KAGEI SHINYA (JP)
OCHI YASUHIRO (JP)
HATA YOSHIMI (JP)
KAGEI SHINYA (JP)
OCHI YASUHIRO (JP)
HATA YOSHIMI (JP)
International Classes:
H01M4/50; C01G45/00; C25B1/21; (IPC1-7): C01G45/00; H01M4/50
Foreign References:
| JP2004047445A | 2004-02-12 | |||
| JP2003163003A | 2003-06-06 |
Attorney, Agent or Firm:
Takeuchi, Saburo c/o TAKEUCHI & ASSOCIATES (2F. Toranomon 11 Mori Bldg., 6-4, Toranomon 2-chom, Minato-ku Tokyo 01, JP)
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