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电化学(中英文) ›› 2007, Vol. 13 ›› Issue (1): 40-43.  doi: 10.61558/2993-074X.1779

• 研究论文 • 上一篇    下一篇

储氢合金La_(0.7-x)Ce_xMg_(0.3)Ni_(2.4)Co_(0.6)(x=0~0.4)电化学性能研究

肖玲玲;王一菁;刘毅;曹建胜;宋大卫;焦丽芳;袁华堂;   

  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,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,天津300071,天津300071
  • 收稿日期:2007-02-28 修回日期:2007-02-28 出版日期:2007-02-28 发布日期:2007-02-28

Electrochemical Characteristics of La_(0.7-x)Ce_xMg_(0.3)Ni_(2.4)Co_(0.6)(x=0~0.4)Hydrogen Storage Alloys

XIAO Ling-ling,WANG Yi-jing*,LIU Yi,CAO Jian-sheng,SONG Da-wei,JIAO Li-fang,YUAN Hua-tang   

  1. (Institute of New Energy Material Chemistry,Nankai University,Tianjin 300071,China
  • Received:2007-02-28 Revised:2007-02-28 Published:2007-02-28 Online:2007-02-28

摘要: 研究了以Ce部分取代La对AB3型储氢合金La0.7-xCexMg0.3Ni2.4Co0.6(x=0~0.4)结构和电化学性能的影响.实验表明,该系列合金主要包含LaNi3相和LaNi5相.随着Ce含量的增加,合金电极的最大放电容量逐渐降低,但循环稳定性得到了明显改善.

关键词: AB3型, 储氢合金, 微观结构, 电化学性能

Abstract: The effect of partial substitution of Ce for La on the structure and the electrochemical properties of the La0.7-xCexMg0.3Ni2.4Co0.6(x=0~0.4)hydrogen storage alloys have been investigated systematically.The result of X-ray powder diffraction(XRD) show that the alloys are all consisted of the LaNi3 phase and the LaNi5 phase.The maximum discharge capacity is decreased gradually with increase of the Ce contents,but the cycling life is improved obviously.

Key words: AB3, hydrogen storage alloy, structure characteristics, electrochemical properties

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