| 摘要 |
PURPOSE:To produce an electrochemical electrode having high performance and long service life with low cost by employing alloy for forming metal hydride of special structure containing Ni while having C14 type Laves phase. CONSTITUTION:In alloys for forming metal hydride to be shown by general formula ABa, C14(MgZn2) type Laves phase structure alloy where main alloy phase is containing Ni by 5-50atom% is employed for electrochemical electrode. In the formula, A means more than one kind of Ti, Zr, Hf while B means more than one kind of V, Nb, Ta, Cr, Mo, Mn, Fe, Co, Cu, La, Ce as well as 5- 50wt% of Ni and a=1.5-2.5. Such alloy includes, for example, Ti0.3Zr0.7Mn0.8 Cr0.8Ni0.4 (where, Ni=13.3atom%). When employing such alloy, the performance and the serive life of metal hydride negative pole for alkali secondary cell are improved. |
