Invention Application
US20070072079A1 Hydrogen-absorbing alloy electrode, alkaline storage battery, and method of manufacturing the alkaline storage battery 审中-公开
吸氢合金电极,碱性蓄电池以及碱性蓄电池的制造方法

  • Patent Title: Hydrogen-absorbing alloy electrode, alkaline storage battery, and method of manufacturing the alkaline storage battery
  • Patent Title (中): 吸氢合金电极,碱性蓄电池以及碱性蓄电池的制造方法
  • Application No.: US11528312
    Application Date: 2006-09-28
  • Publication No.: US20070072079A1
    Publication Date: 2007-03-29
  • Inventor: Shigekazu YasuokaYoshifumi MagariJun Ishida
  • Applicant: Shigekazu YasuokaYoshifumi MagariJun Ishida
  • Priority: JP2005-281103 20050928; JP2006-051841 20060228
  • Main IPC: H01M4/58
  • IPC: H01M4/58
Hydrogen-absorbing alloy electrode, alkaline storage battery, and method of manufacturing the alkaline storage battery
Abstract:
Conductivity of a negative electrode is improved in an alkaline storage battery that uses as its negative electrode a hydrogen-absorbing alloy electrode employing a hydrogen-absorbing alloy containing at least a rare-earth element, nickel, magnesium, and aluminum, to sufficiently enhance the cycle life of the alkaline storage battery. The negative electrode of the alkaline storage battery uses a hydrogen-absorbing alloy electrode employing hydrogen-absorbing alloy particles containing at least a rare-earth element, nickel, magnesium, and aluminum. A surface layer is formed on the hydrogen-absorbing alloy particles, the surface layer having a weight ratio of aluminum to nickel less than that of the interior portion of the hydrogen-absorbing alloy. The weight ratio of aluminum to nickel in the surface layer is 0.015 or less.
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