Title:
ALKALINE STORAGE BATTERY
Document Type and Number:
WIPO Patent Application WO/2012/057351
Kind Code:
A1
Abstract:
[Problem] To provide an alkaline storage battery that optimizes the stoichiometric ratio in the composition of a rare earth-Mg-Ni based hydrogen storage alloy and can reduce size and suppress memory effects while maintaining high output and output stability.
[Solution] An alkaline storage battery (10) is provided with an electrode group formed from a negative electrode (11) having a hydrogen storage alloy as a main component, a positive electrode (12) having nickel hydroxide as a main component, and a separator (13) along with an electrolyte, all in an exterior can (17). The general formula for the hydrogen storage alloy is represented by LaxNdyRe1-x-y-zMgzNin-m-vAlmTv (Re being at least one element selected from rare earth elements (other than La and Nd) containing Y; and T being at least one element selected from Co, Mn, and Zn) and satisfies the conditions: 0.13 ≤ x ≤ 0.34, 0.14 ≤ y ≤ 0.60, 0.10 ≤ z ≤ 0.15, 3.50 ≤ n ≤ 3.75, 0.13 ≤ m ≤ 0.22, and v ≥ 0.
Inventors:
TAMURA KAZUAKI (JP)
KATAYAMA YOSHINOBU (JP)
MORI MAKOTO (JP)
NAGAE TERUHITO (JP)
KATAYAMA YOSHINOBU (JP)
MORI MAKOTO (JP)
NAGAE TERUHITO (JP)
Application Number:
PCT/JP2011/075046
Publication Date:
May 03, 2012
Filing Date:
October 31, 2011
Export Citation:
Assignee:
SANYO ELECTRIC CO (JP)
TAMURA KAZUAKI (JP)
KATAYAMA YOSHINOBU (JP)
MORI MAKOTO (JP)
NAGAE TERUHITO (JP)
TAMURA KAZUAKI (JP)
KATAYAMA YOSHINOBU (JP)
MORI MAKOTO (JP)
NAGAE TERUHITO (JP)
International Classes:
H01M4/38; C22C19/00; H01M4/24; H01M4/32; H01M4/62; H01M10/30
Foreign References:
| JP2008084649A | 2008-04-10 | |||
| JP2008300108A | 2008-12-11 | |||
| JP2007311095A | 2007-11-29 | |||
| JP2009087632A | 2009-04-23 | |||
| JP2010231949A | 2010-10-14 |
Attorney, Agent or Firm:
Hiroshi Sumiya (JP)
KADOYA HIROSHI (JP)
KADOYA HIROSHI (JP)
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Claims: