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镍氢蓄电池的高容量化起着决定性作用的是作为蓄电池负极使用的贮氢合金的高容量化。钒基贮氢合金的吸氢量大约是现有ＬａＮｉ5系贮氢合金的 2 7倍 ,但是只有 50 %左右的氢能释放出来 ,因此 ,近年来为改善钒基贮氢合金的电化学性能进行了大量研究。日本东北大学研究了作为镍氢
High-capacity nickel-metal hydride batteries play a decisive role as the battery negative electrode used in high-capacity hydrogen storage alloys. The hydrogen absorption capacity of vanadium-based hydrogen storage alloy is about 27 times higher than that of the existing LaNi5-based hydrogen storage alloy, but only about 50% of the hydrogen can be released. Therefore, in recent years, the electrochemical performance of the vanadium-based hydrogen storage alloy has been improved A lot of research. Japan’s Tohoku University studied as nickel hydrogen