桂林电子科技大学学报2012，Vol.32Issue(3)：254-258,5.
不同放电深度下LaNi3.8Co0.6Mn0.3Al0.3合金的电化学行为研究
Electrochemical behaviors of LaNi3.8Co0.6Mn0.3Al0.3 alloy under different depth of discharge
摘要
Abstract
The electrochemical behaviors of LaNi3.8 Co0 (Mii0.3 AI0.3 alloy under different depth of discharge(DOD) have been studied by electrochemical impedance spectroscopy (EIS) to discuss the relationship between electrochemical reaction and kinetics. It shows that the area of active reaction superficial on the electrode S and internal contact resistance j?w decrease gradually with the increasing of DOD, implying the improvement of electrical conductivity. Moreover, the exchange current density Ioincreases, indicated the surface reaction rate has been accelerated, while the hydrogen diffusion coefficient decreases obviously. To electrode kinetics, the electrochemical reaction kinetics is mainly controlled by surface reaction at low depth of discharge, and hydrogen diffusion internal of alloy particles at high depth of discharge.关键词
储氢合金/电化学行为/交流阻抗/表面反应/氢扩散系数Key words
hydrogen storage alloys/electrochemical behaviors/electrochemical impedance/surface reaction/ hydrogen diffusion coefficient分类
信息技术与安全科学引用本文复制引用
刘文平,周怀营,倪成员,王仲民,姚青荣,兰兴先..不同放电深度下LaNi3.8Co0.6Mn0.3Al0.3合金的电化学行为研究[J].桂林电子科技大学学报,2012,32(3):254-258,5.基金项目
国家自然科学基金(50971049) （50971049）
广西研究生教育创新计划(2011105950805M39) （2011105950805M39）
