GALVANOSTATIC DESORPTION OF HYDROGEN FROM PALLADIUM LAYERS .1. THEORY

被引:17
作者
BUCUR, RV
COVACI, I
机构
[1] Institute of Isotopic and Molecular Technology, R-3400 Cluj-Napoca
关键词
D O I
10.1016/0013-4686(79)87075-9
中图分类号
O646 [电化学、电解、磁化学];
学科分类号
081704 ;
摘要
The theory of the galvanostatic desorption of hydrogen held in a finite palladium layer (thickness, l ∼ 10-3-10-2 cm), in a thin palladium layer (thickness, λ ∼ 10-6-10-5 cm) and in a composite finite layer of a non-noble metal protected with a thin palladium layer is developed. The diffusion equations are solved by the Laplace transform and their solutions in term of the concentration of dissolved Ni and weakly adsorbed Nw hydrogen are given. Further the Iτ-functions are estimated for small values of the current, which allows the calculation of the characteristic parameters both of the metallic layer and of the partial steps involved, ie the diffusion and the transfer. The transient overpotentials occurring during the electrochemical desorption for a reversible and an irreversible oxidation step are also calculated. © 1979.
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页码:1213 / 1218
页数:6
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