| 摘要 |
PCT No. PCT/JP96/02400 Sec. 371 Date Apr. 25, 1997 Sec. 102(e) Date Apr. 25, 1997 PCT Filed Aug. 28, 1996 PCT Pub. No. WO97/08353 PCT Pub. Date Mar. 6, 1997A rare earth metal-nickel hydrogen storage alloy having a composition represented by the formula (1)(R1-xLx)(Ni1-yMy)z(1)(R: La, Ce, Pr, Nd; L: Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Y, Sc, Mg, Ca; M: Co, Al, Mn, Fe, Cu, Zr, Ti, Mo, Si, V, Cr, Nb, Hf, Ta, W, B, C; 0.01</=x</=0.1; 0</=y</=0.5; 4.5</=z</=5.0), the alloy including in an amount of not less than 10 volume % and less than 95 volume % thereof crystals each containing not less than 2 and less than 20 antiphase boundaries extending perpendicular to C-axis of a crystal grain of the alloy per 20 nm along the C-axis, not less than 60% and less than 95% of added amount of said element represented by L in the formula (1) being arranged in antiphase areas, a method for producing the same, and an anode for a nickel-hydrogen rechargeable battery. The anode for a nickel-hydrogen rechargeable battery can improve initial activity, battery capacity, and battery life all at the same time.
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