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The Mg-based hydrogen storage alloys Mg2Ni, Mg2Ni0.7Fe0.3 and Mg1.7Al0.3Ni were successfully synthesized by a two-step process (sintering and ball milling). The crystal structure and microstructure were examined by X-ray diffraction, Scanning Electron Microscope and Malvern particle size analyzer. New phase appears in the tripe alloys doped with Al and Fe, and the particle size ranges from 3 μm to 5 μm. The electrochemical performance studies indicate that the partial substitution of Al for Mg, and Fe for Ni significantly improve the cycle life, reversibility of hydrogen absorption and desorption. The diffusion process is the control step in the electrode reaction of hydrogen storage alloys.
文献贡献者
天津兰力科：罐头中铅检测(电化学工作站)
天津兰力科：直接甲醇燃料电池(DMFC)阳极催化材料的研究
天津兰力科：直接甲醇燃料电池有序功能铂基合金阳极催化剂的研究
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