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The influence of processing parameters on the electrochemical performance of sulphate based cathode materials.

机译：工艺参数对硫酸盐基正极材料电化学性能的影响。

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摘要

This project focuses on synthesis, characterisation and evaluation of the electrochemical performance of Li2Fe2(SO4) 3 as a potential novel cathode material. A sol-gel technique has been used as a basis for the synthesis method in order to control the morphology of the synthesised material. Physical characterisation included SEM and XRD. Battery cells were constructed within a controlled atmosphere glove box and the electrochemical behaviour evaluated using a computer controlled cyclic facility for up to 50 cycles at different discharge rates. Several approaches, including carbon ball-milling and the use of a nickel foam charge collector, were taken to improve the electrochemical performance of the material since its primary weakness was found to be low electrical conductivity. Through the carbon ball-milling approach the specific capacity of the material was raised to 40mAh/g from initial results of 15mAh/g. The operating voltage was also stabilized at 3.6V.
机译：该项目致力于Li2Fe2（SO4）3作为潜在的新型阴极材料的电化学性能的合成，表征和评估。为了控制合成材料的形态，已将溶胶-凝胶技术用作合成方法的基础。物理表征包括SEM和XRD。在可控气氛手套箱内构建电池，并使用计算机控制的循环设备在不同的放电速率下最多进行50次循环，以评估电化学行为。由于发现了材料的主要弱点是低电导率，因此采取了几种方法，包括碳球磨和使用镍泡沫电荷收集器，来改善材料的电化学性能。通过碳球磨法，材料的比容量从最初的15mAh / g提高到40mAh / g。工作电压也稳定在3.6V。

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  • 作者

    Milojevic, Marko.;

  • 作者单位

    University of Toronto (Canada).;

  • 授予单位 University of Toronto (Canada).;
  • 学科 Engineering Materials Science.
  • 学位 M.A.Sc.
  • 年度 2006
  • 页码 77 p.
  • 总页数 77
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 工程材料学;
  • 关键词

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