| 酸化镀铜复合表面处理对AB_3型贮氢合金电化学性能的影响 |
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| 引用本文： | 白桃于,闻明科,韩树民,李媛.酸化镀铜复合表面处理对AB_3型贮氢合金电化学性能的影响[J].燕山大学学报,2009,33(1). |
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| 作者姓名： | 白桃于 闻明科 韩树民 李媛 |
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| 作者单位： | 1. 燕山大学,环境与化学工程学院,河北,秦皇岛,066004
2. 中海石油炼化有限责任公司,广东,惠州,516086 |
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| 摘 要： | 研究了酸化镀铜表面复合处理对AB3型贮氢合金La0.88Mg0.12Ni2.95Mn0.10Co0.55Al0.10电化学性能的影响.经酸化镀铜复合表面处理后,AB3型贮氢合金的初始活化性能、倍率放电性能和循环稳定性均得到明显提高,C1xp/Cmxp从61.1%提高到75%左右,在0.2C和5C放电电流密度下合金的HRD分别提高7.0%和12.8%,合金电极在100周时的容量保持率S100从91%升高到93%以上.合金表面镀覆的铜层对合金内部金属元素的保护作用有效地改善了AB3型贮氢合金的电化学性能.酸化镀铜复合表面处理实现了酸处理和表面镀铜在同一处理液中一步完成,是一种简单方便的表面改性处理方法.
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| 关 键 词： | AB3型贮氢合金 表面处理 电化学性能 MH/Ni电池 负极材料 |
Effect of duplex surface treatment on electrochemical properties of AB_3-type hydrogen storage alloy by acidification-copperize |
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| BAI Tao-yu,WEN Ming-ke,HAN Shu-min,LI Yuan.Effect of duplex surface treatment on electrochemical properties of AB_3-type hydrogen storage alloy by acidification-copperize[J].Journal of Yanshan University,2009,33(1). |
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| Authors: | BAI Tao-yu WEN Ming-ke HAN Shu-min LI Yuan |
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| Institution: | 1. College of Environmental and Chemical Engineering;Yanshan University;Qinhuangdao;Hebei 066004;China;2. Huizhou Refinery Project CNOOC Oil and Petrochemicals Co.;Ltd.;Huizhou;Guangdong 516086;China |
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| Abstract: | The effect of acidification-copperplating duplex surface treatment on electrochemical properties of La0.88Mg0.12Ni2.95Mn0.10-Co0.55Al0.10 hydrogen storage alloy was studied. The initial activation characteristics,the high rate dischargeability(HRD) and the capacity retention are all improved obviously by the acidification-copperplating duplex surface treatment. The 1st/ max promotes from 61.1% to 75%,the HRD of discrepancy increases 7.0% and 12.8% at discharge current density of 0.2 and 5,respectively,and t... |
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| Keywords: | AB_3-type hydrogen storage alloy surface treatment electrochemical property MH/Ni battery negative electrode materials |
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