Studies on the diffusion coefficient of hydrogen through metal hydride electrodes

被引：28

作者：

Chen, J ^{[1
]}

Dou, SX ^{[1
]}

Bradhurst, DH ^{[1
]}

Liu, HK ^{[1
]}

机构：

[1] Univ Wollongong, Inst Mat Technol & Mfg, Wollongong, NSW 2522, Australia

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 1998年 / 23卷 / 03期

关键词：

D O I：

10.1016/S0360-3199(97)00046-3

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The potentiostatic discharge method was used to determine the hydrogen diffusion coefficient in MmNi(5), MmNi(4.5)Mn(0.5), MmNi(3.55)Co(0.75)Mn(0.4)Al(0.3) (Mm = mischmetal), ZrVNi, ZrV0.6Ni1.2Mn0.2 and Zr0.5Ti0.5V0.6Ni1.0Mn0.4 alloy electrodes. The values obtained were of the order of 10(-10) cm(2)/s for the MmNi, system alloys and 10(-11) cm(2)/s for the Zr-based Laves phase alloys. It was found that the higher the content of Mn in the alloy, the larger the value of the hydrogen diffusion Coefficient. The effect of the Ni:alloy ratio in the mixture (alloy and Ni powder) on the diffusion coefficient and on the high rate of discharge were studied. The advantages of the potentiostatic discharge method is also discussed. (C) 1997 International Association for Hydrogen Energy.

引用

页码：177 / 182

页数：6

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