| LaNi4.7Al0.3单颗粒微电极电化学行为的研究 |
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| 引用本文： | 刘军,杨毅夫,邵惠霞,高峰,熊跃,陈卫华.LaNi4.7Al0.3单颗粒微电极电化学行为的研究[J].高等学校化学学报,2006,27(10):1962-1964. |
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| 作者姓名： | 刘军 杨毅夫 邵惠霞 高峰 熊跃 陈卫华 |
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| 作者单位： | 武汉大学化学与分子科学学院,武汉,430072 |
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 摘 要： | 报道了一种单颗粒微电极制备新方法, 并研究了LaNi4.7Al0.3球形单颗粒微电极的电化学行为.
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| 关 键 词： | 储氢合金 LaNi4.7Al0.3 单颗粒微电极 循环伏安曲线 扩散系数 |
| 文章编号： | 0251-0790（2006）10-1962-03 |
| 收稿时间： | 12 29 2005 12:00AM |
| 修稿时间： | 2005-12-29 |
Studies on Electrochemical Behavior of LaNi4.7Al0.3 Single Micro-particle Electrode |
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| LIU Jun,YANG Yi-Fu,SHAO Hui-Xia,GAO Feng,XIONG Yue,CHEN Wei-Hua.Studies on Electrochemical Behavior of LaNi4.7Al0.3 Single Micro-particle Electrode[J].Chemical Research In Chinese Universities,2006,27(10):1962-1964. |
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| Authors: | LIU Jun YANG Yi-Fu SHAO Hui-Xia GAO Feng XIONG Yue CHEN Wei-Hua |
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| Affiliation: | College of Chemistry and Molecular Science, Wuhan University, Wuhan 430072, China |
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| 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 LaNi4.7Al0.3 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 LaNi4.7Al0.3 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. |
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| Keywords: | Hydrogen storage alloy LaNi_ 4 7Al_ 0 3 Single micro-particle electrode(SMPE) Cyclic voltammogram Diffusion coefficient |
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