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首页> 外文期刊>Journal of power sources >A novel porous coral-like Zn_(0.5)Ni_(0.5)Co_2O_4 as an anode material for lithium ion batteries with excellent rate performance
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A novel porous coral-like Zn_(0.5)Ni_(0.5)Co_2O_4 as an anode material for lithium ion batteries with excellent rate performance

机译：一种新型的多孔珊瑚状Zn_（0.5）Ni_（0.5）Co_2O_4作为锂离子电池负极材料，具有优异的倍率性能

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摘要

A novel porous coral-like Zn_(0.5)Ni_(0.5)Co_2O_4 (ZNCO) is prepared by a facile co-precipitation method using oxalic acid as complex agent, and the ZnCo_2O_4 (ZCO) nanospheres and NiCo_2O_4 (NCO) nanoflakes are also prepared for comparison. The obtained products are systematically characterized by powder X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), and X-ray photoelectron spectroscopy (XPS). The results demonstrate that the controlled metallic elements doping has significant effects on the nanostructure and electrochemical performance of the samples. Compared with the ZCO nanospheres and NCO nanoflakes, the coral-like ZNCO materials with enough free space as anodes in lithium ion batteries (LIBs) exhibit a high initial coulombic efficiency of 84%, a high specific capacity of -1445 mAh g~(-1) at a current rate of 100 mA g~(-1) after 50 cycles, and ～730 mAh g~(-1) at a current rate of 1500 mA g~(-1) after 200 cycles, as well as an excellent rate capability at elevated current rates, such as, ～1080 and ～425 mAh g~(-1) at current rates of 500 and 6000 mA g~(-1) respectively. This work presents a meaningful way for the preparation of mixed metal oxides with porous nanostructure as superior anodes for lithium ion batteries.
机译：以草酸为络合剂，采用共沉淀法制备了新颖的多孔珊瑚状Zn_（0.5）Ni_（0.5）Co_2O_4（ZNCO），并制备了ZnCo_2O_4（ZCO）纳米球和NiCo_2O_4（NCO）纳米片。为了比较。通过粉末X射线衍射（XRD），场发射扫描电子显微镜（FESEM），透射电子显微镜（TEM）和X射线光电子能谱（XPS）对所得产物进行系统表征。结果表明，受控金属元素的掺杂对样品的纳米结构和电化学性能具有重要影响。与ZCO纳米球和NCO纳米片相比，具有足够自由空间作为锂离子电池（LIB）阳极的珊瑚状ZNCO材料具有84％的高初始库仑效率，-1445 mAh g〜（-的高比容量） 1）50个循环后以100 mA g〜（-1）的电流速率，200个循环后以1500 mA g〜（-1）的电流速率〜730 mAh g〜（-1）分别在500和6000 mA g〜（-1）的电流速率下，例如〜1080和〜425 mAh g〜（-1）的高电流速率下具有出色的速率能力。这项工作为制备具有多孔纳米结构的混合金属氧化物作为锂离子电池的优良阳极提供了一种有意义的方法。

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  • 来源
    《Journal of power sources》 |2014年第10期|795-803|共9页
  • 作者

    Xiong Song; Qiang Ru; Yudi Mo; Lingyun Guo; Shejun Hu; Bonan An;

  • 作者单位

    School of Physics and Telecommunication Engineering, South China Normal University, Guangzhou 510006, PR China,Engineering Research Center of Materials and Technology for Electrochemical Energy Storage (Ministry of Education), Guangzhou 510006, PR China,Laboratory of Quantum Engineering and Quantum Materials, School of Physics and Telecommunication Engineering, South China Normal University, Guangzhou 510006, PR China;

    School of Physics and Telecommunication Engineering, South China Normal University, Guangzhou 510006, PR China,Engineering Research Center of Materials and Technology for Electrochemical Energy Storage (Ministry of Education), Guangzhou 510006, PR China,Laboratory of Quantum Engineering and Quantum Materials, School of Physics and Telecommunication Engineering, South China Normal University, Guangzhou 510006, PR China;

    School of Physics and Telecommunication Engineering, South China Normal University, Guangzhou 510006, PR China,Engineering Research Center of Materials and Technology for Electrochemical Energy Storage (Ministry of Education), Guangzhou 510006, PR China,Laboratory of Quantum Engineering and Quantum Materials, School of Physics and Telecommunication Engineering, South China Normal University, Guangzhou 510006, PR China;

    School of Physics and Telecommunication Engineering, South China Normal University, Guangzhou 510006, PR China,Engineering Research Center of Materials and Technology for Electrochemical Energy Storage (Ministry of Education), Guangzhou 510006, PR China,Laboratory of Quantum Engineering and Quantum Materials, School of Physics and Telecommunication Engineering, South China Normal University, Guangzhou 510006, PR China;

    School of Physics and Telecommunication Engineering, South China Normal University, Guangzhou 510006, PR China,Engineering Research Center of Materials and Technology for Electrochemical Energy Storage (Ministry of Education), Guangzhou 510006, PR China,Laboratory of Quantum Engineering and Quantum Materials, School of Physics and Telecommunication Engineering, South China Normal University, Guangzhou 510006, PR China;

    School of Physics and Telecommunication Engineering, South China Normal University, Guangzhou 510006, PR China,Engineering Research Center of Materials and Technology for Electrochemical Energy Storage (Ministry of Education), Guangzhou 510006, PR China,Laboratory of Quantum Engineering and Quantum Materials, School of Physics and Telecommunication Engineering, South China Normal University, Guangzhou 510006, PR 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

    Coral-like nanostructure; Complex cobalt-based metal oxide; Lithium ion battery; Co-precipitation; Anode material;

    机译：珊瑚状纳米结构;复杂的钴基金属氧化物;锂离子电池;共沉淀;阳极材料;

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