Title:
水素吸蔵合金、該合金を用いた水素吸蔵合金電極及びニッケル水素二次電池
Document Type and Number:
Japanese Patent JP5183077
Kind Code:
B2
Abstract:
To provide a rare earth-Mg-Ni-based hydrogen storage alloy containing inexpensive La as a main component and hardly causing pulverization by charge/discharge and a hydrogen storage alloy electrode using this alloy and hereby to provide a high-capacity nickel-hydrogen secondary battery excellent in cycle characteristics using the rare earth-Mg-Ni-based hydrogen storage alloy at a low cost.
The nickel-hydrogen secondary battery contains particles of a hydrogen storage alloy in a negative pole, and this hydrogen storage alloy has a composition represented by general formula (LaaPrbNdcAd)1-xMgxNiyTz(wherein, A represents at least one element selected from the group consisting of Sm, Eu, etc.; T represents at least one element selected from the group consisting of V, Nb, etc.; subscripts a, b, c and d satisfy relations represented by a≥0.4, b>0, c≥0, d≥0, a≥b>c and a+b+c+d=1, respectively; and subscripts x, y and z are within the ranges represented by 0.10≤x≤0.25, 0.05≤z≤0.35 and 3.0≤y+z≤4.0, respectively).
COPYRIGHT: (C)2008,JPO&INPIT
Inventors:
Kihara Masaru
Kendai Endo
Akira Saguchi
Application Number:
JP2007046884A
Publication Date:
April 17, 2013
Filing Date:
February 27, 2007
Assignee:
Sanyo Electric Co., Ltd.
International Classes:
C22C19/00; H01M4/38
Domestic Patent References:
Foreign References:
| WO2008018494A1 | | | | |
| WO2007018291A1 | | | | |
Attorney, Agent or Firm:
Koji Nagato
Junichi Yamanaka
