恒电位阶跃法研究贮氢合金MlNi_(3.75)Co_(0.65)Mn_(0.4)Al_(0.2)中氢的扩散行为

电化学（中英文） ›› 2001, Vol. 7 ›› Issue (4): 445-451.

恒电位阶跃法研究贮氢合金MlNi_(3.75)Co_(0.65)Mn_(0.4)Al_(0.2)中氢的扩散行为

原鲜霞,徐乃欣

中国科学院上海冶金研究所,中国科学院上海冶金研究所上海200050 ,上海200050

收稿日期:2001-11-28 修回日期:2001-11-28 出版日期:2001-11-28 发布日期:2001-11-28

Study of Hydrogen Diffusion Behavior in Hydrogen Storage Alloy MlNi_(3.75)Co_(0.65) Mn_(0.4) Al_(0.2) with Potential Step Method

YUAN Xian xia *, XU Nai xin

(Shanghai Institute of Meatallurgy, Chinese Academy of Sciencs, Shanghai 200050, China

Received:2001-11-28 Revised:2001-11-28 Published:2001-11-28 Online:2001-11-28

摘要/Abstract

摘要： 本文用恒电位阶跃法研究了不同放电深度 (DOD)和不同温度下贮氢合金MlNi3.75Co0 .6 5Mn0 .4 Al0 .2 中氢的扩散行为 .结果表明 :室温下该合金中氢的扩散系数随DOD的增大而增大 ,在5 0 %DOD的该合金中 ,氢的扩散系数随温度的升高而增大 ,扩散活化能为 19.87kJ/mol

关键词: 贮氢合金, 氢的扩散系数, 恒电位阶跃法

Abstract: Potential step method was employed to study the hydrogen diffusion behavior in hydrogen storage alloy MlNi 3.75 Co 0.65 Mn 0.4 Al 0.2 with various depth of discharge(DOD) at ambient temperature and with 50%DOD at various temperatures. It was found that hydrogen diffusion cofficient in the hydrogen storage alloy increaes with the increase in DOD at ambient temperature. and for the alloy with 50%DOD,the hydrogen diffusion coefficient increases with the increase in temperature and the activation energy for hydrogen diffusion in the alloy is 19.87 kJ/mol.

Key words: Hydrogen storage alloy, Hydrogen diffusion coefficient , Potential step method

中图分类号:

TM911

原鲜霞,徐乃欣. 恒电位阶跃法研究贮氢合金MlNi_(3.75)Co_(0.65)Mn_(0.4)Al_(0.2)中氢的扩散行为[J]. 电化学（中英文）, 2001, 7(4): 445-451.

YUAN Xian xia *, XU Nai xin . Study of Hydrogen Diffusion Behavior in Hydrogen Storage Alloy MlNi_(3.75)Co_(0.65) Mn_(0.4) Al_(0.2) with Potential Step Method[J]. Journal of Electrochemistry, 2001, 7(4): 445-451.

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链接本文: https://electrochem.xmu.edu.cn/CN/

https://electrochem.xmu.edu.cn/CN/Y2001/V7/I4/445

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