| 储氢合金粉表面电化学修饰镍磷合金的研究 |
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| 引用本文： | 吕燕.储氢合金粉表面电化学修饰镍磷合金的研究[J].唐山学院学报,2014,27(6):42-44. |
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| 作者姓名： | 吕燕 |
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| 作者单位： | 唐山学院 环境与化学工程系,河北 唐山,063000 |
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| 基金项目： | 2012年度唐山市科学技术研究与发展计划项目，唐山学院2013年度科研项目 |
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| 摘 要： | 作为镍氢电池负极活性物质,储氢合金是影响电极电化学性能的主要因素,对储氢合金进行表面处理可有效提高镍氢电池电极的电化学性能。实验采用电化学方法对储氢合金表面进行镍磷合金修饰处理,通过扫描电镜(SEM)及EDX能谱对电极表面进行了表征分析,测定了处理前后镍氢电池在1.5C和2C下的大电流放电性能,通过交流阻抗和循环伏安曲线对处理后电极进行了评价。测试结果表明,通过电化学修饰镍磷合金,储氢合金电极的大电流放电性能有所提高,电化学阻抗减小,循环寿命增长,有效提高了镍氢电池的性能。
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| 关 键 词： | 镍氢电池 储氢合金 镍磷合金 电化学性能 |
A Study on Decorative Electrochemical Coating of Hydrogen Storage Alloy Powder With Nickel-Phosphorus Alloy |
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| LV Yan.A Study on Decorative Electrochemical Coating of Hydrogen Storage Alloy Powder With Nickel-Phosphorus Alloy[J].Journal of Tangshan College,2014,27(6):42-44. |
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| Authors: | LV Yan |
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| Institution: | LV Yan ( Department of Environment and Chemical Engineering, Tangshan College, Tangshan 063000, China) |
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| Abstract: | As active material of the nickel-metal hydride battery anode,hydrogen storage alloy is the main factor affecting the electrochemical properties of the electrodes,and the surface treat-ment of hydrogen storage alloy can effectively improve the electrochemical properties of the elec-trode of Ni-MH batteries.In the experiment discussed in this paper,the surface of hydrogen stor-age alloy is coated with nickel-phosphorus alloy,scanning electronic microscopy（SEM）,X-ray diffraction（XRD）are used to analyze the properties of the electrode surface,the large current dis-charge performances of Ni-MH batteries are measured before and after the coating in 1.5 C and 2 C,and post-treated electrodes are evaluated through AC impedance spectroscopy and cyclic voltam-metry curve.The results show that the large current discharge performance of hydrogen storage alloy e-lectrode coated with nickel-phosphorus alloy is improved,the electrochemical impedance decreases,and the cycle life increase,thus effectively improving the performance of Ni-MH batteries. |
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| Keywords: | Ni-MH battery hydrogen storage alloy nickel-phosphorus alloy electrochemical performance |
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