| 摘要 |
PURPOSE:To obtain a hydrogen storage electrode having good utilization of stored hydrogen, long life, and high capacity by containing a specific La-Ni-Co group hydrogen storage alloy. CONSTITUTION:A hydrogen storage electorde containes a hydrogen storage alloy indicated in LaNixCoyMz. M shows at least one element selected from a group comprising Mg, V, Cr, Mn, Fe, Cu, Nb, Mo, Sn, Al, and Tl, and the relation of x, y, and z is 4.5<=x+y+z<=5.5, and the value of z is 1.0<z<=2.0. Thereby, the hydrogen storage electrode having small characteristic-deterioration caused by corrosion of the alloy, small capacity-deterioration caused by powdering the alloy, good utilization of stored hydrogen, long life, and high capacity over a long period of cycles is obtained. |
