Studies on Electrochemical Behavior of LaNi4.7Al0.3 Single Micro-particle Electrode

Chem. J. Chinese Universities

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Studies on Electrochemical Behavior of LaNi_4.7Al_0.3Single Micro-particle Electrode

LIU Jun, YANG Yi-Fu, SHAO Hui-Xia, GAO Feng, XIONG Yue, CHEN Wei-Hua

College of Chemistry and Molecular Science, Wuhan University, Wuhan 430072, China

Received:2005-12-29 Revised:1900-01-01 Online:2006-10-10 Published:2006-10-10
Contact: YANG Yi-Fu

Abstract

Abstract:

A new single micro-particle electrode(SMPE) fabrication technique——the inlaid SMPE technique was introduced in this paper. The preparation procedure of an alloy SMPE was described in detail. Based on the SMPE technique, the electrochemical behavior of LaNi_4.7Al_0.3 spherical particles with two different radii was investigated. The results of CV study showed that more detailed electrochemical information of the alloy can be provided on the alloy SMPE as compared with that on the composite alloy electrode. The results of potential step study depict that H diffusion coefficient in LaNi_4.7Al_0.3 keeps almost constant when the size of the alloy particle changes, and the diffusion coefficient measured on the alloy SMPE[(2.5—2.6)×10^-9 cm²/s] is about one order larger than that detected on the composite alloy electrode.

Key words: Hydrogen storage alloy, LaNi_4.7Al_0.3, Single micro\|particle electrode(SMPE), Cyclic voltammogram, Diffusion coefficient

CLC Number:

O646

TrendMD:

LIU Jun, YANG Yi-Fu, SHAO Hui-Xia, GAO Feng, XIONG Yue, CHEN Wei-Hua. Studies on Electrochemical Behavior of LaNi_4.7Al_0.3Single Micro-particle Electrode
[J]. Chem. J. Chinese Universities, doi: .

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Studies on Electrochemical Behavior of LaNi_4.7Al_0.3Single Micro-particle Electrode

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