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T-Nb2O5 quantum dots prepared by electrodeposition for fast Li ion intercalation/deintercalation

机译:通过电沉积的T-NB2O5量子点,用于快速锂离子插入/脱嵌

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摘要

T-Nb2O5 quantum dots were electrodeposited on Ti nanorod arrays to prepare Ti@T-Nb2O5 core-shell array electrodes. The particle size of T-Nb2O5 could be manipulated by adjusting the depositing current density, and quantum dots several nanometers in size could be obtained at a deposition current of 6 mA cm(-2). Benefiting from the ultra-small particle size of T-Nb2O5 and the array structure, Ti@T-Nb2O5 nanorod arrays exhibited good rate capability and durability when used as self-supported Li ion battery anodes. The arrays possessed capacities of 350 and 70 mAh g(-1) at rate currents of 0.06 and 30 A g(-1), respectively. Furthermore, the electrodes maintained 500 cycles without obvious decay at a high rate current of 30 A g(-1).
机译:T-NB2O5量子点被电沉积在Ti Nanorod阵列上,以制备Ti @ T-Nb2O5核壳阵列电极。 通过调节沉积电流密度可以操纵T-NB2O5的粒径,并且在沉积电流为6 mA cm(-2)的沉积电流下可以获得几纳米的量子点。 从T-NB2O5的超小粒径和阵列结构的效益,TI @ T-NB2O5纳米槽阵列在用作自支持的LI离子电池阳极时表现出良好的速率能力和耐久性。 阵列分别具有350和70mAhg(-1)的容量,分别以0.06和30Ag(-1)的速率电流。 此外,电极保持500次循环,在30Ag(-1)的高速率电流中没有明显衰减。

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  • 来源
    《Nanotechnology》 |2017年第21期|共6页
  • 作者单位

    Harbin Inst Technol Acad Fundamental &

    Interdisciplinary Sci Harbin 150001 Heilongjiang Peoples R China;

    Harbin Inst Technol Acad Fundamental &

    Interdisciplinary Sci Harbin 150001 Heilongjiang Peoples R China;

    Harbin Inst Technol Acad Fundamental &

    Interdisciplinary Sci Harbin 150001 Heilongjiang Peoples R China;

    Harbin Inst Technol Acad Fundamental &

    Interdisciplinary Sci Harbin 150001 Heilongjiang Peoples R China;

    Harbin Inst Technol Acad Fundamental &

    Interdisciplinary Sci Harbin 150001 Heilongjiang Peoples R China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 特种结构材料;
  • 关键词

    lithium ion battery; niobium oxide; titanium nanowire array; rate capability; durability;

    机译:锂离子电池;氧化铌;钛纳米线阵列;速率能力;耐久性;

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