0790323-A1 is referenced by 3 patents and cites 6 patents.

A rare earth metal/nickel-base hydrogen absorbing alloy having a composition represented by formula (1): (R1-x Lx )(Ni1-y My )z , (wherein R represents La, Ce, Pr, or Nd; L represents Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Y, Sc, Mg, or Ca; and M represents Co, Al, Mn, Fe, Cu, Zr, Ti, Mo, Si, V, Cr, Nb, Hf, Ta, W, B, or C; 0,01 <= x <= 0.1; 0 <= y <= 0.5; and 4.5 <= z <= 5.0), wherein the content of crystals with the number of reversed-phase boundaries present perpendicularly to the C axis of crystal grains in the alloy being 2 to less than 20 per 20 nm in the direction of the C axis is 10 to less than 95 vol.% and the amount of L in the formula (I) present in the reversed-phase region is 60 to less than 95 % of the amount of L added. The negative electrode for the nickel-hydrogen secondary battery can simultnaneously improve all of the initial activity, battery capacity, and battery life.

Title
Rare earth metal/nickel-base hydrogen absorbing alloy, process for preparing the same, and negative electrode for nickel-hydrogen secondary battery
Application Number
EP19960928668 19960828
Publication Number
0790323 (A1)
Application Date
August 28, 1996
Publication Date
August 20, 1997
Inventor
Kaneko Akihito
JP
Assignee
Santoku Metal
JP
IPC
H01M 04/38
C22C 19/00
H01M 04/38
H01M 04/24
H01M 04/38
H01M 04/24
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