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材料研究学报  2002, Vol. 16 Issue (4): 394-398    
  论文 本期目录 | 过刊浏览 |
非化学计量LaNi5型储氢合金的性能
唐睿;柳永宁;郭生武;于光
西安交通大学金属材料强度国家重点实验室
引用本文:

唐睿; 柳永宁; 郭生武; 于光 . 非化学计量LaNi5型储氢合金的性能[J]. 材料研究学报, 2002, 16(4): 394-398.

全文: PDF(699 KB)  
摘要: 采用富La混合稀土与Ni、Co、Mg 等元素组合,获得了一种非化学计量LaNi5型储氢合金. 用金相、XRD 和SEM-EDX等方法分析了该合金的组织结构,研究了合金的气相储氢特性以及电化学性能,结果表明:在1.6MPa氢压和温度 29℃下,该合金的储氢量达到1.58 %(质量分数). 该合金的放电容量为380mAh/g,经300次循环后容量保持率为55%. 该合金的基体是CaCu5型结构的LaNi5相,但有第二相(LaMg)Ni3析出,这种第二相的形成是导致该合金大容量的关键.
关键词 储氢合金混合稀土PCT曲线放电容量    
Key words
收稿日期: 1900-01-01     
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