Abstract
Electrochemical impedance spectroscopy was employed to determine the hydrogen diffusion coefficient in MlNi 3.75 Co 0.65 Mn 0.4 Al 0.2 metal hydride electrode with various states of charge(SOC) at room temperature and with 50% SOC at various temperatures. It was found that hydrogen diffusion coefficient in this electrode decreases with the increase in SOC at ambient temperature, and for the electrode with 50%SOC, hydrogen diffusion coefficient increases with the increase of temperature and the activation energy for hydrogen diffusion in it is 35 kJ/mol.
Keywords
Metal hydride electrode, Hydrogen diffusion coefficient, Electrochemical impedance spectroscopy
Publication Date
2001-08-28
Online Available Date
2001-08-28
Revised Date
2001-08-28
Received Date
2001-08-28
Recommended Citation
Xian xia YUAN, Nai xin XU.
Determination of Hydrogen Diffusion Coefficient in Metal Hydride Electrode with Electrochemical Impedance Spectroscopy[J]. Journal of Electrochemistry,
2001
,
7(3): Article 14.
DOI: 10.61558/2993-074X.3262
Available at:
https://jelectrochem.xmu.edu.cn/journal/vol7/iss3/14
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