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Electrochemical performance of ball-milled magnesium(2)-nickel electrodes.

机译:球磨镁(2)-镍电极的电化学性能。

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摘要

A Mg2Ni alloy was chosen to investigate the effects of a ball milling treatment on the alloy's electrochemical characteristics when the alloy was used as an electrode in a Ni-MH (metal hydride) battery. The mechanical grinding (MG) treatment was carried out in a Spex 8000 high-energy mill with ball milling times ranging from 0.5hrs to 80hrs, and ball-to-powder weight ratios ranging from 1:1 to 10:1. The structural changes taking place on ball milling were determined using X-ray diffraction and SEM (Scanning Electron Microscopy) techniques. Electrodes were fabricated from the ball-milled Mg 2Ni powders, and electrochemical measurements were made in a 6M KOH solution using a Solartron 1285 Potentiostat/Galvanostat. These measurements were used to determine electrochemical properties, including exchange current density, i0, polarization resistance, RP, and charge/discharge characteristics.;The equivalency of P-C-T and E-C-T curves at room temperature was demonstrated for a LaNi4.7Al0.3 alloy. (Abstract shortened by UMI.).
机译:选择了一种Mg2Ni合金,以研究将球磨处理对Ni-MH(金属氢化物)电池中的电极进行球磨处理对合金电化学特性的影响。机械研磨(MG)处理是在Spex 8000高能磨机中进行的,球磨时间为0.5小时至80小时,球粉重量比为1:1至10:1。使用X射线衍射和SEM(扫描电子显微镜)技术确定球磨时发生的结构变化。由球磨的Mg 2Ni粉末制成电极,并使用Solartron 1285恒电位仪/恒电位仪在6M KOH溶液中进行电化学测量。这些测量用于确定电化学性能,包括交换电流密度,i 0,极化电阻,RP和充电/放电特性。;证实了LaNi4.7Al0.3合金在室温下的P-C-T和E-C-T曲线的等效性。 (摘要由UMI缩短。)。

著录项

  • 作者

    Niu, Hao (Shirley).;

  • 作者单位

    University of Windsor (Canada).;

  • 授予单位 University of Windsor (Canada).;
  • 学科 Materials science.;Energy.;Electrical engineering.
  • 学位 M.Sc.
  • 年度 1999
  • 页码 192 p.
  • 总页数 192
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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