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首页> 外文期刊>Chemical engineering journal >Three-dimensional (3D) flower-like MoSe2/N-doped carbon composite as a long-life and high-rate anode material for sodium-ion batteries
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Three-dimensional (3D) flower-like MoSe2/N-doped carbon composite as a long-life and high-rate anode material for sodium-ion batteries

机译：三维（3D）花状MOSE2 / N掺杂碳复合材料作为钠离子电池的长寿命和高速阳极材料

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摘要

Molybdenum-based composites have attracted tremendous attention as active material fillers for sodium ion batteries (SIBs) due to their high capacity. Herein, three-dimensional (3D) Flower-like MoSe2/nitrogen-doped carbon (MoSe2/CN) composite was successfully prepared through a facile hydrothermal route and followed by annealing treatment. When tested as anode for SIBs, the as-prepared MoSe2/CN composite shows outstanding electrochemical performance, including a good cycling stability (328.7 mA h g(-1) after 500 cycles at 1.0 A g(-1)) and high rate capability (523.6, 407.4, 370, 347, 326, 310.2 and 300.1 mA h g(-1) at 0.1, 0.5, 1.0, 2.0, 3.0, 4.0 and 5.0 A g(-1), respectively). The excellent Na-ion storage performance of the MoSe2/CN composite can be ascribed to the synergistic coupling effect between MoSe2 and nitrogen-doped carbon, which could enhance kinetically facile and cycling stability during the charge and discharge process. Furthermore, in situ XRD results suggest that the capacity fading during cycling is caused by structural instability resulting from the conversion reaction.
机译：由于其高容量，钼基复合材料作为钠离子电池（SIBS）的活性物质填料引起了巨大的关注。这里，通过容易的水热途径成功制备三维（3D）花样的碳（MOSE2 / CN）复合材料，然后通过退火处理。当作为SIBs进行阳极测试时，AS制备的MOSE2 / CN复合材料显示出卓越的电化学性能，包括良好的循环稳定性（328.7 mA Hg（-1），500℃下为1.0 ~g（-1））和高速率能力（ 523.6,407.4,370,347,326,310.2和300.1 mA hg（-1）分别为0.1,0.5,1.0,2.0,3.0,4.0和5.0 a g（-1）。 MOSE2 / CN复合材料的优异Na离子储存性能可以归因于MOSE2和氮掺杂碳之间的协同偶联效果，这可以在充电和放电过程中增强动力学和循环稳定性。此外，原位XRD结果表明循环期间的容量衰落是由转化反应产生的结构不稳定性引起的。

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  • 来源
    《Chemical engineering journal》 |2019年第2019期|共11页
  • 作者

    Zheng Fenghua; Zhong Wentao; Deng Qiang; Pan Qichang; Ou Xing; Liu Yanzhen; Xiong Xunhui; Yang Chenghao; Chen Yu; Lite Meilin;

  • 作者单位

    South China Univ Technol Sch Environm &

    Energy New Energy Res Inst Guangzhou Key Lab Surface Chem Energy Mat Guangzhou 510006 Guangdong Peoples R China;

    South China Univ Technol Sch Environm &

    Energy New Energy Res Inst Guangzhou Key Lab Surface Chem Energy Mat Guangzhou 510006 Guangdong Peoples R China;

    South China Univ Technol Sch Environm &

    Energy New Energy Res Inst Guangzhou Key Lab Surface Chem Energy Mat Guangzhou 510006 Guangdong Peoples R China;

    South China Univ Technol Sch Environm &

    Energy New Energy Res Inst Guangzhou Key Lab Surface Chem Energy Mat Guangzhou 510006 Guangdong Peoples R China;

    South China Univ Technol Sch Environm &

    Energy New Energy Res Inst Guangzhou Key Lab Surface Chem Energy Mat Guangzhou 510006 Guangdong Peoples R China;

    South China Univ Technol Sch Environm &

    Energy New Energy Res Inst Guangzhou Key Lab Surface Chem Energy Mat Guangzhou 510006 Guangdong Peoples R China;

    South China Univ Technol Sch Environm &

    Energy New Energy Res Inst Guangzhou Key Lab Surface Chem Energy Mat Guangzhou 510006 Guangdong Peoples R China;

    South China Univ Technol Sch Environm &

    Energy New Energy Res Inst Guangzhou Key Lab Surface Chem Energy Mat Guangzhou 510006 Guangdong Peoples R China;

    Georgia Inst Technol Sch Mat Sci &

    Engn Atlanta GA 30332 USA;

    South China Univ Technol Sch Environm &

    Energy New Energy Res Inst Guangzhou Key Lab Surface Chem Energy Mat Guangzhou 510006 Guangdong Peoples R China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学工业;
  • 关键词

    Sodium-ion batteries; Anode materials; Electrochemical performance; MoSe2/CN composite;

    机译：钠离子电池;阳极材料;电化学性能;MOSE2 / CN复合材料;

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