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• 作者：Hong-Xia Huang ; Guo-Hui Li ; Xin-Ying Wang ; Yin Li ; Xing Teng ; Ting Qi
• 关键词：La–Mg–Ni ; based alloy ; Composite alloys ; Electrochemical property ; Kinetics
• 刊名：Rare Metals
• 出版年：2015
• 出版时间：May 2015
• 年：2015
• 卷：34
• 期：5
• 页码：338-343
• 全文大小：927 KB
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• 作者单位：Hong-Xia Huang (1)
  Guo-Hui Li (1)
  Xin-Ying Wang (1)
  Yin Li (1)
  Xing Teng (1)
  Ting Qi (1)
  
  1. Guangxi Scientific Experiment Center of Mining, Metallurgy and Environment, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin, 541004, China
  
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Metallic Materials
  Chinese Library of Science
  
• 出版者：Journal Publishing Center of University of Science and Technology Beijing, in co-publication with Sp
• ISSN：1867-7185

文摘

In order to improve the overall electrochemical properties of AB₅-type storage alloys, the new type composite alloys M1Ni_3.5Co_0.6Mn_0.4Al_0.5-em class="EmphasisTypeItalic">x wt% Mm_0.89-Mg_0.11-Ni_2.97Mn_0.14Al_0.20Co_0.54 (x?=?0, 5, 10; M1 means mischmetal) were prepared by means of ball milling. The composite alloys are shown to be single LaNi₅ phase by X-ray diffraction (XRD) patterns. The maximum discharge capacity slightly increases from 315 mAh·g? for M1Ni_3.5Co_0.6Mn_0.4Al_0.5 to 324 mAh·g? (x?=?5) and 325 mAh·g? (x?=?10). The addition of AB₃-type La–Mg–Ni-based alloy has a positive effect on the cycle stability. With the addition of Mm_0.89Mg_0.11Ni_2.97Mn_0.14-Al_0.20Co_0.54 alloy, the exchange current density (I ₀ ), the limiting current density (I _L ), and the diffusion coefficient of hydrogen (D) of the alloy electrodes increase, leading to a corresponding improvement of the high rate dischargeability.