ALKALINE STORAGE BATTERY - SANYO ELECTRIC CO

Title:

ALKALINE STORAGE BATTERY

Document Type and Number:

WIPO Patent Application WO/2007/034760

Kind Code:

A1

Abstract:

Disclosed is an alkaline storage battery comprising a negative electrode, a positive electrode, a separator and an alkaline electrolyte solution in a package can. The negative electrode contains a hydrogen storage alloy represented by the following general formula: Ln1-xMgx(Ni1-yTy)z (wherein Ln represents at least one element selected from lanthanoid elements, Ca, Sr, Sc, Y, Ti, Zr and Hf; T represents at least one element selected from V, Nb, Ta, Cr, Mo, Mn, Fe, Co, Al, Ga, Zn, Sn, In, Cu, Si, P and B; and 0 < x ≤ 1, 0 ≤ y ≤ 0.5 and 2.5 ≤ z ≤ 4.5) as a negative electrode active material. In this alkaline storage battery, the hydrogen equilibrium pressure (P) is regulated to satisfy 0.02 MPa ≤ P ≤ 0.11 MPa when the hydrogen amount stored in the hydrogen storage alloy (H/M (atomic ratio)) at 40˚C is 0.5.

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Inventors:

KATAYAMA YOSHINOBU (JP)
YOSHIDA SHUHEI (JP)
SUGII HIROMASA (JP)
HARADA YASUYUKI (JP)
MASUDA YOSHIHIRO (JP)
OCHI MAKOTO (JP)
TAKEE MASAO (JP)

Application Number:

PCT/JP2006/318430

Publication Date:

March 29, 2007

Filing Date:

September 15, 2006

Export Citation:

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Assignee:

SANYO ELECTRIC CO (JP)
KATAYAMA YOSHINOBU (JP)
YOSHIDA SHUHEI (JP)
SUGII HIROMASA (JP)
HARADA YASUYUKI (JP)
MASUDA YOSHIHIRO (JP)
OCHI MAKOTO (JP)
TAKEE MASAO (JP)

International Classes:

H01M4/38; C22C19/00; H01M4/24; H01M10/30

Foreign References:

JP2004115870A	2004-04-15
JP2005248252A	2005-09-15
JP2002105564A	2002-04-10
JP2002313432A	2002-10-25
JP2005032573A	2005-02-03

Other References: