Armstrong, Westerman, Hattori, McLeLand & Naughton
Method of fabricating hydrogen absorbing alloy electrode
 In the present invention, a hydrogen absorbing alloy containing at least nickel, cobalt and aluminum, in which the sum a of the respective abundance ratios of cobalt atoms and aluminum atoms in a portion to a depth of 30 .ANG. from its surface and the sum b of the respective abundance ratios of cobalt atoms and aluminum atoms in a bulk region inside thereof satisfy conditions of a/b.gtoreq.1.30, or a hydrogen absorbing alloy containing at least nickel, cobalt, aluminum and manganese, in which the sum A of the respective abundance ratios of cobalt atoms, aluminum atoms and manganese atoms in a portion to a depth of 30 .ANG. from its surface and the sum B of the respective abundance ratios of cobalt atoms, aluminum atoms and manganese atoms in a bulk region inside thereof satisfy conditions A/B.gtoreq.1.20 is used for a hydrogen absorbing alloy electrode in an alkali secondary battery. 
Sanyo Electric Co., Ltd.
Y Y H
Y10S Y02E H01M
additional additional inventional
Koji Shin Mamoru Kikuko Nobuyuki Yasushi Teruhiko
Nishio Fujitani Kimoto Kato Higashiyama Kuroda Imoto