Effect of KOH pretreatment on the hydriding properties of LaNi2.5Co2.5 alloy
Effect of KOH pretreatment on the hydriding properties of LaNi2.5Co2.5 alloy
复制标题
DOI：
10.1016/0925-8388(95)01752-6
复制
发表时间：
1995-12
影响因子：
6.2
通讯作者：
H. Uchida;Y. Watanabe;Y. Matsumura;H. Uchida
中科院分区：
文献类型：
--
作者：
H. Uchida;Y. Watanabe;Y. Matsumura;H. Uchida
采用电化学和气相反应两种方法对lani2.5 co2.5储氢合金进行了研究。比较了两种工艺的平衡特性和反应动力学，结果吻合较好。KOH预处理反应动力学更快；另一方面，没有发现对平衡性质的影响。俄歇能谱分析结果表明，这种现象是由KOH预处理后的表面改性引起的。讨论了气相反应和电化学反应的平衡和动力学特性。
LaNi2.5Co2.5hydrogen storage alloy was investigated by both electrochemical processes and gas phase reactions. A comparison of equilibrium characteristics and reaction kinetics obtained by both processes showed a good agreement. Pretreatment with KOH yielded faster reaction kinetics; on the other hand no effect on the equilibrium properties was found. From results of Auger electron spectroscopy, the phenomena were caused by the surface modification by the KOH pretreatment. The equilibrium and kinetic characteristics both in the gas phase and in the electrochemical reactions are discussed.