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FeNb11O29 nanotubes: Superior electrochemical energy storage performance and operating mechanism

机译：FENB11O29纳米管：卓越的电化学储能性能和操作机构

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摘要

Due to high capacity from multiple redox couples, niobium-based oxides are promising anode materials for lithium-ion batteries (LIBs). However, their poor electronic conductivity restricts their electrochemical performance. Here, we report the FeNb11O29 nanotubes as an advanced anode material. FeNb11O29 nanotubes exhibit an impressive charge capacity of 272.64 mAh g(-1) with high initial cycle Coulombic efficiency of 90.13% at 0.1 C and outstanding cyclic stability (only 0.0123% of capacity decay per cycle during 2000 cycles). Furthermore, according to the in-situ XRD, the behavior of lithium atoms distribution in the FeNb11O29 framework during the insertion and extraction is studied in detail. In addition, full cells are assembled with commercially available cathodes. Coupled with LiFePO4, which is used as cathode, the full cell displays good electrochemical performance. In summary, FeNb11O29 nanotubes can be used as an ideal anode material due to the excellent electrochemical performance.
机译：由于来自多个氧化还原耦合的高容量，基于铌基氧化物是锂离子电池（Libs）的阳极材料。然而，它们的电子电导率差限制了它们的电化学性能。在这里，我们将FENB11O29纳米管报告为先进的阳极材料。 FENB11O29纳米管令人印象深刻的电荷容量为272.64mAhg（-1），初始循环库仑效率为90.13％，0.1℃，突出的循环稳定性未突出（2000次循环期间只有0.0123％的容量衰减）。此外，根据原位XRD，详细研究了在插入和提取过程中FENB11O29框架中的锂原子分布的行为。此外，全细胞与市售的阴极组装。与LifePO4相结合，用作阴极，全电池显示出良好的电化学性能。总之，由于优异的电化学性能，FENB11O29纳米管可用作理想的阳极材料。

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  • 来源
    《Nano Energy》 |2019年第2019期|共11页
  • 作者

    Zheng Runtian; Qian Shangshu; Cheng Xing; Yu Haoxiang; Peng Na; Liu Tingting; Zhang Jundong; Xia Maoting; Zhu Haojie; Shu Jie;

  • 作者单位

    Ningbo Univ Fac Mat Sci &

    Chem Engn Ningbo 315211 Zhejiang Peoples R China;

    Ningbo Univ Fac Mat Sci &

    Chem Engn Ningbo 315211 Zhejiang Peoples R China;

    Ningbo Univ Fac Mat Sci &

    Chem Engn Ningbo 315211 Zhejiang Peoples R China;

    Ningbo Univ Fac Mat Sci &

    Chem Engn Ningbo 315211 Zhejiang Peoples R China;

    Ningbo Univ Fac Mat Sci &

    Chem Engn Ningbo 315211 Zhejiang Peoples R China;

    Ningbo Univ Fac Mat Sci &

    Chem Engn Ningbo 315211 Zhejiang Peoples R China;

    Ningbo Univ Fac Mat Sci &

    Chem Engn Ningbo 315211 Zhejiang Peoples R China;

    Ningbo Univ Fac Mat Sci &

    Chem Engn Ningbo 315211 Zhejiang Peoples R China;

    Ningbo Univ Fac Mat Sci &

    Chem Engn Ningbo 315211 Zhejiang Peoples R China;

    Ningbo Univ Fac Mat Sci &

    Chem Engn Ningbo 315211 Zhejiang Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 能源与动力工程;
  • 关键词

    FeNb11O29 nanotubes; Electrospinning; Anode materials; In-situ XRD; Full cell;

    机译：FENB11O29纳米管;静电纺丝;阳极材料;原位XRD;全细胞;

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