| 元素掺杂对镁基储氢合金电化学性能的影响 |
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| 引用本文： | 杨尘,朱云峰,张文锋,朱瑾予,李李泉.元素掺杂对镁基储氢合金电化学性能的影响[J].陶瓷科学与艺术,2011(4). |
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| 作者姓名： | 杨尘 朱云峰 张文锋 朱瑾予 李李泉 |
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| 作者单位： | 南京工业大学材料科学与工程学院; |
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| 基金项目： | 国家自然科学基金资助项目(51071085) |
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| 摘 要： | 利用氢化燃烧合成复合高能球磨法制备镁基储氢电极合金Mg2NiH4,并对合金进行不同元素(Cr、Co、Nb、Ti和V)掺杂处理。使用X线衍射仪(XRD)和电化学工作站对材料结构性能进行表征,并考察不同元素掺杂对电极合金的结构和电化学性能的影响。结果表明:少量金属元素掺杂处理并没有改变合金的主相结构。元素掺杂降低了合金电极的最大放电容量和动力学性能,但是合金电极的电化学循环稳定性均得到不同程度的提高,其中Ti掺杂处理对于改善合金电极电化学循环性能最为明显。
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| 关 键 词： | 镁基储氢合金 氢化燃烧合成 金属掺杂 电化学性能 |
Effects of metal doping on electrochemical properties of Mg-based hydrogen storage alloys |
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| YANG Chen,ZHU Yunfeng,ZHANG Wenfeng,ZHU Jinyu,LI Liquan.Effects of metal doping on electrochemical properties of Mg-based hydrogen storage alloys[J].Ceramics Science & Art,2011(4). |
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| Authors: | YANG Chen ZHU Yunfeng ZHANG Wenfeng ZHU Jinyu LI Liquan |
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| Affiliation: | YANG Chen,ZHU Yunfeng,ZHANG Wenfeng,ZHU Jinyu,LI Liquan(College of Materials Science and Engineering,Nanjing University of Technology,Nanjing 210009,China) |
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| Abstract: | Mg-based hydrogen storage electrode alloy Mg2NiH4 was prepared by hydriding combustion synthesis(HCS) combined with mechanical milling(MM).The Mg2Ni-based hydride was doped with different metal elements(Cr,Co,Nb,Ti,and V) during the HCS process.The crystal structures and electrochemical performances of the Mg2Ni-based hydrides doped with different metals were investigated by X-ray diffraction(XRD) and electrochemical measurements.Results showed that the crystal structure of the alloy was unchanged after met... |
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| Keywords: | Mg-based hydrogen storage alloys hydriding combustion synthesis metal doping electrochemical properties |
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