| 非晶态MgNi+x%B储氢合金的制备及其电化学性能 |
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| 引用本文： | 刘子利,刘新波,刘希琴,吴正洲,阎新春,张校刚.非晶态MgNi+x%B储氢合金的制备及其电化学性能[J].南京航空航天大学学报,2010,42(1). |
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| 作者姓名： | 刘子利 刘新波 刘希琴 吴正洲 阎新春 张校刚 |
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| 作者单位： | 南京航空航天大学材料科学与技术学院,南京,210016 |
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| 基金项目： | 中国博士后基金(20080430221)资助项目 |
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| 摘 要： | 采用机械合金化方法制备了非晶态MgNi+x%B(x=0,2,5,10)储氢合金材料。XRD结构分析表明,含B三元合金的非晶衍射峰的半高宽较宽。合金电极的放电容量随B含量的增加先增加后减小,MgNi+5%B合金电极的放电容量较MgNi合金电极提高了11.9%。合金电极的循环稳定性随B含量的增加而增加,MgNi+10%B合金电极的容量保持率S10较MgNi合金电极提高了67.76%。添加B改善了合金电极的动力学性能,MgNi+5%B合金电极的HRD400、I0和IL分别较MgNi合金电极提高了40.0%,351.5%和20.21%。
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| 关 键 词： | 镁基储氢合金 机械合金化 电化学性能 |
Preparation and Electrochemical Characteristics of Amorphous MgNi+x%B Hydrogen Storage Alloys |
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| Liu Zili,Liu Xinbo,Liu Xiqin,Wu Zhengzhou,ran Xinchun,Zhang Xiaogang.Preparation and Electrochemical Characteristics of Amorphous MgNi+x%B Hydrogen Storage Alloys[J].Journal of Nanjing University of Aeronautics & Astronautics,2010,42(1). |
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| Authors: | Liu Zili Liu Xinbo Liu Xiqin Wu Zhengzhou ran Xinchun Zhang Xiaogang |
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| Institution: | College of Material Science and Engineering/a>;Nanjing University of Aeronautics & Astronautics/a>;Nanjing/a>;210016/a>;China |
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| Abstract: | Amorphous MgNi+x%B(x=0,2,5,10) hydrogen storage alloys are prepared by mechanical alloying(MA) method.The structure of these alloys is examined by Xray diffraction.Results show that the full width at half maximum(FWHM) of diffraction peaks of ternary alloys is increased.The discharge capacity of the alloy electrodes is firstly increased,and then is decreased with increasing the addition of B.Compared with MgNi alloy electrode,the discharge capacity of MgNi+5%B alloy electrode is increased by 11.9%.The elect... |
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| Keywords: | Mg-based hydrogen storage alloys mechanical alloying electrochemical properties |
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