| 化学镀铜对A2B7型贮氢合金电极电化学性能的影响 |
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| 引用本文： | 田晓光.化学镀铜对A2B7型贮氢合金电极电化学性能的影响[J].科学技术与工程,2010,10(1). |
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| 作者姓名： | 田晓光 |
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| 作者单位： | 1. 郑州交通职业学院,郑州,450062
2. 郑州日产汽车有限公司,郑州,450062 |
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| 摘 要： | 以A2B7型贮氢合金La0.75Mg0.25Ni3.44Al0.06为对象,系统研究了合金覆铜后进行不同温度退火处理的电极电化学性能。结果表明,表面包覆Cu及退火处理后的贮氢合金电极的活化性能及循环稳定性有所提高。线性极化扫描和电化学阻抗图谱分析结果表明,包覆Cu及退火处理后提高了合金电极的交换电流密度I0,降低了电化学阻抗,说明包覆处理改善了合金表面的电催化活性,加快了合金表面电荷的迁移速率,从而提高了高倍率放电能力。
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| 关 键 词： | A2B7型贮氢合金 化学镀铜 电化学性能 |
| 收稿时间： | 2009/9/23 0:00:00 |
| 修稿时间： | 2009/10/13 0:00:00 |
Electrochemical Properties studies on chemical copper microencapsulating for La-Mg-Ni system A2B7 type hydrogen storage alloy |
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| TIAN Xiao-guang.Electrochemical Properties studies on chemical copper microencapsulating for La-Mg-Ni system A2B7 type hydrogen storage alloy[J].Science Technology and Engineering,2010,10(1). |
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| Authors: | TIAN Xiao-guang |
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| Institution: | Zhengzhou Transportation Vocational College/a>;Zhengzhou Nissan Automobile CO./a>;LTD.1/a>;Zhengzhou 450062/a>;P.R.China |
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| Abstract: | The effects of copper-microencapsulating and annealing on the electrochemical properties of La0.75Mg0.25Ni3.44Al0.06 hydrogen storage alloy electrode in different temperature has been systemically explored.It was indicated by experiments that copper-microencapsulating and annealing results in increasing cycling stability of La0.75Mg0.25Ni3.44Al0.06 hydrogen storage alloy electrode.The results of linear polarization and impedance spectroscopy show that hydrogen storage alloys coated could increase exchange c... |
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| Keywords: | A2B7 type hydrogen storage alloy chemical copper microencapsulatingelectrochemical properties |
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