Graphical abstract<'/> Enhanced cyclic stability of SnS microplates with conformal carbon coating derived from ethanol vapor deposition for sodium-ion batteries
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首页> 外文期刊>Applied Surface Science >Enhanced cyclic stability of SnS microplates with conformal carbon coating derived from ethanol vapor deposition for sodium-ion batteries
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Enhanced cyclic stability of SnS microplates with conformal carbon coating derived from ethanol vapor deposition for sodium-ion batteries

机译：乙醇气相沉积衍生的具有保形碳涂层的SnS微板的循环稳定性增强，用于钠离子电池

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Graphical abstractDisplay OmittedHighlights•Carbon coated SnS was achieved by CVD using ethanol vapor as carbon source.•The carbon coating enhances conductivity and relieves volume changes of SnS.•The carbon coated SnS exhibits enhanced rate capability and cycling stability.AbstractCarbon coated SnS microplates (SnS@C MPs) were prepared via a facile chemical vapor deposition method using SnS2nanoflakes as precursor and ethanol vapor as carbon source. The carbon coating restrains the growth of SnS during the heat treatment. Furthermore, it improves the electronic conductivity as well as accommodates volume variations of SnS during the sodiation and desodiation processes. Therefore, the rate capability and cycle performance of the SnS@C MPs as anode materials for sodium-ion batteries are remarkably enhanced compared with the bare SnS and the SnS2precursor. At current densities of 0.1, 0.2, 0.5, 1 and 2 A g−1, the optimized SnS@C MPs exhibit stable capacities of 602.9, 532.1, 512.2, 465.9 and 427.2 mAh g−1, respectively. At 1 A g−1, they show a reversible capacity of 528.8 mAh g−1in the first cycle, and maintain 444.7 mAh g−1after 50 cycles, with capacity retention of 84.1%. The carbon coating through chemical vapor deposition using ethanol vapor as carbon sources is green, simple and cost-effective, which shows great promise to improve the reversible Na+storage of electrode materials.
机译： 图形摘要 < ce：simple-para>省略显示 突出显示 • 涂有碳的SnS原为 • 碳涂层增强了导电性并缓解了S的体积变化nS。 • 涂有碳的SnS表现出增强的速率能力和循环稳定性。 摘要 2 纳米片为前体，乙醇蒸气为碳源。碳涂层抑制了热处理期间SnS的生长。此外，它改善了电导率，并适应了增盐和脱盐过程中SnS的体积变化。因此，与裸露的SnS和SnS 2 相比，作为钠离子电池负极材料的SnS @ C MPs的速率能力和循环性能显着提高。前体。在0.1、0.2、0.5、1和2 1A g -1 的电流密度下，优化的SnS @ C MP的稳定容量为602.9、532.1、512.2， 465.9和427.2 mAh g -1 。在1 A g − 1 处，它们显示的可逆容量为528.8 mAh g − 1 在第一个循环中，在50个循环后保持444.7 mAh g -1 ，容量保持率为84.1％。通过使用乙醇蒸气作为碳源的化学气相沉积进行的碳涂层是绿色的，简单的且具有成本效益的，这显示出很大的希望来改善可逆的Na + 电极材料。

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  • 来源
    《Applied Surface Science》 |2018年第1期|912-918|共7页
  • 作者

    Xiang Li; Jiangwen Liu; Liuzhang Ouyang; Bin Yuan; Lichun Yang; Min Zhu;

  • 作者单位

    School of Materials Science and Engineering, Guangdong Provincial Key Laboratory of Advanced Energy Storage Materials, South China University of Technology;

    School of Materials Science and Engineering, Guangdong Provincial Key Laboratory of Advanced Energy Storage Materials, South China University of Technology;

    School of Materials Science and Engineering, Guangdong Provincial Key Laboratory of Advanced Energy Storage Materials, South China University of Technology;

    School of Materials Science and Engineering, Guangdong Provincial Key Laboratory of Advanced Energy Storage Materials, South China University of Technology;

    School of Materials Science and Engineering, Guangdong Provincial Key Laboratory of Advanced Energy Storage Materials, South China University of Technology;

    School of Materials Science and Engineering, Guangdong Provincial Key Laboratory of Advanced Energy Storage Materials, South China University of Technology;

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  • 正文语种 eng
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  • 关键词

    SnS; Anode; Sodium-ion battery; Carbon coating; Chemical vapor deposition;

    机译：SnS;阳极;钠离子电池;碳涂层;化学气相沉积;

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