Uncertainty in Determination of Hydrogen Diffusion Coefficient in Metal Hydride Electrode Based on the Transition Region of Diffusion-controlled Impedance

Authors

Xian-xia YUAN, Shanghai Institute of Metallurgy, Chinese Academy of Sciences, Shanghai 200050, China;
Nai-xin XU, Shanghai Institute of Metallurgy, Chinese Academy of Sciences, Shanghai 200050, China;

Corresponding Author

Xian_xia YUAN

Abstract

Hydrogen diffusion coefficient in MlNi 3.75 Co 0.65 Mn 0.4 Al 0.2 metal hydride electrode has been determined with transition region of diffusion_controlled impedance.Multiple solutions were obtained at each data point because of the periodic characteristic of some functions used in the calculation,and the maximum difference between the solutions reached several orders of magnitude.On the other hand,the solutions varied for different data points in the transition region of diffusion_controlled impedance of the same experimental plot.It could be concluded that this method is not so well defined and some modification is required.

Keywords

Metal hydride electrode, Hydrogen diffusion coefficient, Electrochemical impedance

DOI Link

https://doi.org/10.61558/2993-074X.3278

Publication Date

2002-02-28

Online Available Date

2002-02-28

Revised Date

2002-02-28

Received Date

2002-02-28

Recommended Citation

Xian-xia YUAN, Nai-xin XU. Uncertainty in Determination of Hydrogen Diffusion Coefficient in Metal Hydride Electrode Based on the Transition Region of Diffusion-controlled Impedance[J]. Journal of Electrochemistry, 2002 , 8(1): Article 12.
DOI: 10.61558/2993-074X.3278
Available at: https://jelectrochem.xmu.edu.cn/journal/vol8/iss1/12

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