La(Ni3 .5Co0.8Mn0.4Al0.3)电化学性能的影响
(中国科学院金属研究所, 辽宁省材料与氢重点试验室， 沈阳 110015)
摘 要: 通过稀土族金属中铈、镨和钕部分替代AB5 储氢合金中的镧，研究了稀土组元变化(共13组成分变化)对合金电极电化学性能的影响。 结果表明稀土组元含量变化明显影响合金电极的电化学性能。镨对保持储氢合金电极的高放电容量有利，当含0.2%(摩尔分数)时放电容量达290 mA·h／g，铈则相反；随钕含量的增加，电池的放电容量也降低。
关键字: 稀土 储氢合金 电极 放电容量
（Institute of Metal Research, Chinese Academy of Sciences, Liaoning Key Laboratory of Materials and Hydrogen, Shenyang 110015, P. R. China）
Abstract:The influences of rare earth Ce, Pr and Nd taking place of some La among AB5 hydrogen stroage alloy(13 samples) on the properties of electrochemistry were studied. The results showed that some change of rare earth component has a great effect on the electrochemical property of AB5 -based hydrogen storage alloy. The influence of Pr on the properties of electrochemistry of alloy electrode is smaller than that of Ce. Pr is useful for keeping the high discharge capacity of the hydrogen storage alloy electrode (The discharge capacity is 290mAh/g when its content is 0.2% (mole fraction)), while Ce is harmful. The discharge capacity of hydrogen storage alloy electrode decreases with increasing content of Nd.
Key words: are-earth hydrogen storage alloy electrode discharge capacity
Key words: are-earth hydrogen storage alloy electrode discharge capacity
