ALKALINE METAL OXIDE/METAL HYDRIDE BATTERY

摘要

As an active material for its negative electrode, a hydrogen storage alloy for a Ni/H battery has the composition MmNi v Al w Mn x Co y M z where Mm is a misch metal, M is Fe, Cu, or a mixture of Fe and Cu, and where 0.1 ~ z ~ 0.4; 0.2 ~ y ~ 0.4; 0.3 ~ w ~ 0.5; 0.2 ~ x ~ 0.4; and 4.9 ~ v+w+x+y+z ~ 5.1. The partial substitution of Co by M, in conjunction with a special production method including the steps of atomizing the molten alloy, followed by heat-treatment and pulverization, leads to an alloy having a particularly high cycle lifetime and discharge capability.