能源危机日益加重,寻求替代能源已迫在眉睫.Ni-MH动力电池以其在多方面的优势而成为HEV和EV首选的动力设备.动力电池对电极材料提出了较一般电池不同的要求.主要介绍了近年来动力电池用新型贮氢合金种类、常用替代元素的作用及其发展方向.AB3型贮氢合金以其出众的放电容量和活化性能有望成为AB5型贮氢合金的替代品应用于动力电池.由于Co的毒害效应,且近年来金属Ni、Co的价格不断上涨,低Co、无Co以及低Ni贮氢合金成为新的研究方向.我国稀土资源丰富,为我国发展Ni-MH动力电池提供了有利条件,可推动我国电动车的发展,也有利于环境保护.
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