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Ultrathin MoS_2/Nitrogen-Doped Graphene Nanosheets with Highly Reversible Lithium Storage

机译：具有高度可逆锂存储能力的超薄MoS_2 /氮掺杂石墨烯纳米片

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摘要

The extensive range of possibilities for using a rechargeable lithium ion battery (LIB) for stationary power storage applications has stimulated significant research to improve its energy, power density and cycling life. The current use of graphite as a commercially available anode material cannot fully meet the energy density requirements for LIB applications in electric vehicles due to its relatively small capacity (372 mAh/g). In the next generation LIB, graphite should be replaced by alternative higher capacity materials and graphene based composite is one of the promising choices. The discovery of graphene has attracted wide-ranging interest due to its unique physical and chemical properties and potential for applications in electronic devices and sensors.This has led to the development of a significant number of graphene-based materials for use as LIB anodes and results have been generally promising due to high specific capacity and improvement of its cycling ability. In recent years, chemical substitutional doping has been used to enhance the properties of graphene-further improving its properties beyond just morphology and size control. This includes the use of sulfur, boron, and nitrogen doping, the latter of which is particularly effective in modulating the electronic properties of graphene Based on these results, we expect that nitrogen-doped (N-doped) graphene will be used as a template for synthesis of active electrode materials.
机译：将可再充电锂离子电池（LIB）用于固定功率存储应用的广泛可能性激发了大量研究以改善其能量，功率密度和循环寿命。由于其相对较小的容量（372 mAh / g），当前将石墨用作可商购获得的阳极材料不能完全满足电动汽车中LIB应用的能量密度要求。在下一代LIB中，应使用替代的高容量材料代替石墨，而基于石墨烯的复合材料是有前途的选择之一。石墨烯的发现因其独特的物理和化学性质以及在电子设备和传感器中的应用潜力而引起了广泛的兴趣，这导致了许多用作LIB阳极的石墨烯基材料的开发和成果。由于高的比容量和其循环能力的提高，已普遍有希望。近年来，化学取代掺杂已被用于增强石墨烯的性能，进一步改善其性能，而不仅仅是形态和尺寸控制。这包括使用硫，硼和氮掺杂，其中后者对调制石墨烯的电子性能特别有效。基于这些结果，我们预计将使用氮掺杂（N掺杂）石墨烯作为模板用于合成活性电极材料。

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  • 来源
    《Advanced energy materials》 |2013年第7期|839-844|共6页
  • 作者

    Kun Chang; Dongsheng Geng; Xifei Li; Jinli Yang; Yongji Tang; Mei Cai; Ruying Li; Xueliang Sun;

  • 作者单位

    Nanomaterials and Energy Lab Department of Mechanical and Materials Engineering the University of Western Ontario London, Ontario, N6A 5B9, Canada;

    Nanomaterials and Energy Lab Department of Mechanical and Materials Engineering the University of Western Ontario London, Ontario, N6A 5B9, Canada;

    Nanomaterials and Energy Lab Department of Mechanical and Materials Engineering the University of Western Ontario London, Ontario, N6A 5B9, Canada;

    Nanomaterials and Energy Lab Department of Mechanical and Materials Engineering the University of Western Ontario London, Ontario, N6A 5B9, Canada;

    Nanomaterials and Energy Lab Department of Mechanical and Materials Engineering the University of Western Ontario London, Ontario, N6A 5B9, Canada;

    General Motors R&.D Center Warren, Ml 48090-9055 USA;

    Nanomaterials and Energy Lab Department of Mechanical and Materials Engineering the University of Western Ontario London, Ontario, N6A 5B9, Canada;

    Nanomaterials and Energy Lab Department of Mechanical and Materials Engineering the University of Western Ontario London, Ontario, N6A 5B9, Canada;

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