Determination of transport and electrochemical kinetic parameters of bare and copper-coated LaNi4.27Sn0.24 electrodes in alkaline solution

被引:75
作者
Zheng, G
Popov, BN
White, RE
机构
[1] Department of Chemical Engineering, University of South Carolina, Columbia
关键词
D O I
10.1149/1.1836545
中图分类号
O646 [电化学、电解、磁化学];
学科分类号
081704 ;
摘要
Electrochemical properties of bare and copper-coated LaNi4.27Sn0.24 electrodes were investigated in alkaline solution. The exchange current density. polarization resistance, and equilibrium potential were determined as functions of the state of charge in the electrodes. The symmetry factors for bare and copper-coated electrodes were estimated to be 0.53 and 0.52, respectively. By using a constant current discharge technique, the hydrogen diffusion coefficient in bare and coated LaNi4.27Sn0.24 was estimated to be 6.75 X 10(-11) cm(2)/s.
引用
收藏
页码:834 / 839
页数:6
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