摘要
采用X射线光电子谱(XPS)测定了稀土贮氢合金电极材料表面元素的浓度和表面的原子的电子状态,指出La_(0.75)Nd_(0.05)Pr_(0.2)(NiCoMnAl)_5合金的快速活化可能是由于表面存在大量的金属Ni弥散分布在la_2o_3基体上。
The La0.75 Nd0.05 Pr0.2 ( NiCoMnAl)5 has been characterized by using electrochemical techniques and X-ray photo-electron spectroscopy. The result showed that nickel clusters dispersed in the matrix of La2O3 and this could promote the process of activation. The electrode passivation was probably caused by the surface oxidation of nickel.
出处
《物理测试》
CAS
1998年第5期15-18,共4页
Physics Examination and Testing
基金
国家自然科学基金
关键词
稀土贮氢合金
表面分析
XPS
电极材料
rate - earth based hydrogen storage alloy
surface anlysis
X - ray photoelectron
speetroscopy(XPS)
