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Performance Improvement of Magnesium Sulfur Batteries with Modified Non-Nucleophilic Electrolytes

机译：改性非亲核电解质改善镁硫电池的性能

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摘要

The combination of a magnesium anode with a sulfur cathode is one of the most promising electrochemical couples because of its advantages of good safety, low cost, and a high theoretical energy density. However, magnesium sulfur batteries are still in a very early stage of research and development, and the discovery of suitable electrolytes is the key challenge for further improvement. Here, a new preparation method for non-nucleophilic electrolyte solutions using a two-step reaction in one-pot is presented, which provides a feasible way to optimize the physiochemical properties of the electrolyte for the application in magnesium sulfur batteries. The first use of modified electrolytes in glymes and binary solvents of glyme and ionic liquid shows beneficial effects on the performance of magnesium sulfur batteries. New insights into the reaction mechanism of electrochemical conversion between magnesium and sulfur are also investigated.
机译：镁阳极与硫阴极的结合是最有前途的电化学对之一，因为它具有安全性好，成本低和理论能量密度高的优点。但是，镁硫电池仍处于研究和开发的早期阶段，发现合适的电解质是进一步改进的关键挑战。在此，提出了一种采用两步法一锅法制备非亲核电解液的新方法，为优化用于镁硫电池的电解液的理化性质提供了一种可行的方法。改性电解质在甘醇二甲醚以及甘醇二甲醚和离子液体的二元溶剂中的首次使用显示出对镁硫电池性能的有益影响。还研究了镁与硫之间电化学转化反应机理的新见解。

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  • 来源
    《Advanced energy materials》 |2015年第3期|1-9|共9页
  • 作者

    Zhirong Zhao-Karger; Xiangyu Zhao; Di Wang; Thomas Diemant; R. JÜrgen Behm; Maximilian Fichtner;

  • 作者单位

    Institute of Nanotechnology Karlsruhe Institute of Technology (KIT);

    Institute of Nanotechnology Karlsruhe Institute of Technology (KIT);

    College of Materials Science and Engineering Nanjing Tech University Nanjing China;

    Institute of Nanotechnology Karlsruhe Institute of Technology (KIT);

    Institute of Surface Chemistry and Catalysis Ulm University Ulm Germany;

    Institute of Surface Chemistry and Catalysis Ulm University Ulm Germany;

    Helmholtz Institute Ulm for Electrochemical Energy Storage (HIU) Ulm Germany;

    Institute of Nanotechnology Karlsruhe Institute of Technology (KIT);

    Helmholtz Institute Ulm for Electrochemical Energy Storage (HIU) Ulm Germany;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    magnesium batteries; magnesium sulfur batteries; non-nucleophilic electrolytes; reaction mechanisms;

    机译：镁电池;镁硫电池;非亲核电解质;反应机理;

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