稀土系储氢合金电化学性能的研究现状

稀土系储氢合金以其能量密度高、高倍率充放电性能、长的循环寿命和良好的环境相容性等优点,被广泛用于MH-Ni电池负极材料。目前提高稀土系储氢合金的容量,改善其电化学性能,是广大研究者的研究热点。介绍了国内外MH-Ni电池的生产状况,从储氢合金的工艺、组成、工作温度等研究方向,概述了储氢合金的研究现状,并对稀土系储氢合金以及MH-Ni电池的应用和发展前景进行了展望,指出随着移动式和无绳式电子产品数量的增加,电动汽车的迅速发展,以及未来能源结构的改变,储氢合金的应用领域会越来越广。

Research trend in electrochemical properties of rare-earth-based hydrogen storage alloys

Rare-earth-based hydrogen storage alloys are widely used as cathode materials of MH-Ni batteries for their advantages, such as, high energy density, high-rate discharge capacity, long cycle life and better consistence with environment, etc. At present, improving the capacity and the electrochemical property became hot research topic. This paper introduces the production situation of MH-Ni battery at home and abroad. Current research trends are briefly explained. Composition and working temperature, applications and development trends of rare-earth-based hydrogen storage alloys and MH-Ni batteries are prospected. It is indicated that the practical application field of hydrogen storage alloys becomes wider and wider with the increase of output of mobile and cordless electronic product, the rapid development of electric vehicle and the changing of energy structure in the future.