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Ultrafast/stable lithium-storage electrochemical performance of Fe/Fe3O4/carbon nanocomposites as lithium-ion battery anode

机译:Fe / Fe3O4 /碳纳米复合材料作为锂离子电池阳极的超快/稳定储锂电化学性能

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摘要

Fe/Fe3O4/carbon nanocomposites are synthesized by a facile two-step solvothermal method. Some (Fe3O4, Fe) nanoparticles are embedded in carbon nanosheets, and some other (Fe3O4, Fe) nanoparticles form core-shell structure (Fe3O4/C, Fe/C) on the surface of carbon nanosheets. As anode of lithium-ion battery, the nanocomposites exhibit ultrafast/stable cycling performance. Their charging time can be shortened to merely similar to 4 min with reversible capacity of 330 mAh/g and maintains 108 mAh/g after 3500 cycles. At 0.2 C rate, the reversible capacity is up to 690 mAh/g and it increases to 755 mAh/g after 100 cycles. The present results demonstrate a right way to produce metal-oxide/carbon nanocomposites in mass production for realizing ultrafast-charging lithium-ion battery. (C) 2016 Elsevier B.V. All rights reserved.
机译:Fe / Fe3O4 /碳纳米复合材料通过简便的两步溶剂热法合成。一些(Fe3O4,Fe)纳米颗粒嵌入碳纳米片中,而其他一些(Fe3O4,Fe)纳米颗粒则在碳纳米片的表面形成核壳结构(Fe3O4 / C,Fe / C)。作为锂离子电池的负极,纳米复合材料具有超快/稳定的循环性能。它们的充电时间可缩短至仅约4分钟,可逆容量为330 mAh / g,并在3500次循环后保持108 mAh / g。在0.2 C的速率下,可逆容量高达690 mAh / g,经过100次循环后,容量增加到755 mAh / g。目前的结果证明了在大规模生产中生产金属氧化物/碳纳米复合材料的正确方法,以实现超快速充电的锂离子电池。 (C)2016 Elsevier B.V.保留所有权利。

著录项

  • 来源
    《Materials Letters》 |2016年第15期|282-285|共4页
  • 作者单位

    Northeastern Univ, Coll Sci, Shenyang 110004, Peoples R China;

    Northeastern Univ, Coll Sci, Shenyang 110004, Peoples R China;

    Northeastern Univ, Coll Sci, Shenyang 110004, Peoples R China;

    Northeastern Univ, Coll Sci, Shenyang 110004, Peoples R China;

    Northeastern Univ, Coll Sci, Shenyang 110004, Peoples R China;

    Northeastern Univ, Coll Sci, Shenyang 110004, Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Nanocomposites; Lithium-ion battery; Energy storage and conversion;

    机译:纳米复合材料;锂离子电池;储能与转化;

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