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首页> 外文期刊>RSC Advances >In situ grown Nb4N5 nanocrystal on nitrogen-doped graphene as a novel anode for lithium ion battery
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In situ grown Nb4N5 nanocrystal on nitrogen-doped graphene as a novel anode for lithium ion battery

机译：原位生长的NB4N5纳米晶体在氮掺杂石墨烯上作为锂离子电池的新型阳极

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摘要

The metal-rich niobium nitride of Nb4N5 has higher conductivity than Nb3N5 and a higher theoretical specific capacity than NbN. To rationally design a metal-rich anode material, Nb4N5 nanocrystals coated by nitrogen-doped graphene (N-G) have been successfully synthesized by a facile in situ ice bathing method with subsequent annealing in NH3. The use of these as an anode material is reported for the first time. The discharge capacity is 487 mA h g(-1) at the current density of 0.1 A g(-1) (0.0819 mA cm(-2)) after 200 cycles and the high rate discharge capacity is 125 mA h g(-1) at a current density of 5 A g(-1) (4.0926 mA cm(-2)). Specially, the discharge capacity is still enhanced after 200 cycles at 0.1 A g(-1) (0.0819 mA cm(-2)). The Nb4N5/N-G hybrid could be a promising anode material for LIBs with a high rate performance and long cycle life.
机译：Nb4N5的富含金属的氮化铌具有比NB3N5更高的导电性，并且比NBN更高的理论特异性。 为了理性地设计一种富含金属的阳极材料，通过含氮石墨烯（N-G）涂覆的NB4N5纳米晶体已经通过浅冰浴方法成功地合成，其在NH 3中随后的退火。 首次报告将这些作为阳极材料。 在200次循环后的电流密度为0.1Ag（-1）（0.0819 mA（-2）），放电容量为487 mA hg（-1），高速放电容量为125 mA hg（-1） 电流密度为5Ag（-1）（4.0926 mA cm（-2））。 特别是，在0.1Ag（-1）（0.0819 mA cm（-2））时，在200次循环后，放电容量仍然增强。 NB4N5 / N-G杂种可以是具有高速率性能和长循环寿命的LIB的有前途的阳极材料。

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  • 来源
    《RSC Advances》 |2016年第84期|共6页
  • 作者

    Dong Chenlong; Wang Xin; Liu Xiangye; Yuan Xiaotao; Dong Wujie; Cui Houlei; Duan Yuhang; Huang Fuqiang;

  • 作者单位

    Peking Univ Beijing Natl Lab Mol Sci Coll Chem &

    Mol Engn State Key Lab Rare Earth Mat Chem &

    Applicat Beijing 100871 Peoples R China;

    Peking Univ Beijing Natl Lab Mol Sci Coll Chem &

    Mol Engn State Key Lab Rare Earth Mat Chem &

    Applicat Beijing 100871 Peoples R China;

    Peking Univ Beijing Natl Lab Mol Sci Coll Chem &

    Mol Engn State Key Lab Rare Earth Mat Chem &

    Applicat Beijing 100871 Peoples R China;

    Peking Univ Beijing Natl Lab Mol Sci Coll Chem &

    Mol Engn State Key Lab Rare Earth Mat Chem &

    Applicat Beijing 100871 Peoples R China;

    Peking Univ Beijing Natl Lab Mol Sci Coll Chem &

    Mol Engn State Key Lab Rare Earth Mat Chem &

    Applicat Beijing 100871 Peoples R China;

    Chinese Acad Sci Shanghai Inst Ceram CAS Key Lab Mat Energy Convers Shanghai 200050 Peoples R China;

    Beijing Univ Chem Technol Appl Chem Program Fac Sci Beijing 100029 Peoples R China;

    Peking Univ Beijing Natl Lab Mol Sci Coll Chem &

    Mol Engn State Key Lab Rare Earth Mat Chem &

    Applicat Beijing 100871 Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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