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电化学(中英文) ›› 2007, Vol. 13 ›› Issue (2): 132-135.  doi: 10.61558/2993-074X.1794

• 研究论文 • 上一篇    下一篇

Mg/Mg_(1.8)La_(0.2)Ni纳米复合材料的吸放氢性能研究

孙洪亮;张燕燕;张海昌;杨化滨;周作祥;   

  1. 南开大学新能源材料化学研究所,南开大学新能源材料化学研究所,南开大学新能源材料化学研究所,南开大学新能源材料化学研究所,南开大学新能源材料化学研究所 天津300071,天津300071,天津300071,天津300071,天津300071
  • 收稿日期:2007-05-28 修回日期:2007-05-28 出版日期:2007-05-28 发布日期:2007-05-28

Hydriding and Dehydriding Properties of Mg/Mg_(1.8)La_(0.2)Ni Nanocomposites

SUN Hong-liang,ZHANG Yan-yan,ZHANG Hai-chang,YANG Hua-bin,ZHOU Zuo-xiang   

  1. (Institute of New Energy Material Chemistry,Nankai University,Tianjin 300071,China
  • Received:2007-05-28 Revised:2007-05-28 Published:2007-05-28 Online:2007-05-28

摘要: 应用高能球磨法制备Mg-x%Mg1.8La0.2Ni(x=10、20和30)纳米复合储氢材料.X射线衍射(XRD)、透射电镜(TEM)和选区电子衍射(SAED)测试表明,该复合材料具有纳米晶和非晶态混合结构的性质,吸氢温度降低,较好的吸放氢动力学性能,在423K,2.5MPa氢压的条件下,50s内即可达到最大吸氢量.

关键词: 燃料电池, 镁基合金, 复合储氢材料, 高能球磨

Abstract: Mg-x %Mg1.8La0.2Ni(x=10,20 and 30)nanocomposites have been synthesized by high-energy ball milling method.Results of the X-ray diffraction(XRD),transmission electron microscopy(TEM)and selected area electron diffraction(SAED)tests were showed that each composite had a nanocrystalline/amorphous structure,which was beneficial for the improvement of the hydriding and dehydriding properties of Mg.The hydrogen absorption temperature decreased and the hydrogen sorption kinetics were improved.Under the conditions of 423 K and the hydrogen pressure of 2.5MPa,each composite could reach the maximum hydriding capacity within 50 s.

Key words: fuel cell, magnesium-based alloy, hydrogen storage composite material, high-energy ball milling

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