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首页> 外文期刊>Materials Letters >Monodisperse mesoporous Li_9V_3(P_2O_7)_3(PO_4)_2 microspheres prepared via a hydrothermal method as cathode material for lithium-ion batteries
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Monodisperse mesoporous Li_9V_3(P_2O_7)_3(PO_4)_2 microspheres prepared via a hydrothermal method as cathode material for lithium-ion batteries

机译：水热法制备锂离子电池正极材料的单分散介孔Li_9V_3（P_2O_7）_3（PO_4）_2微球

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摘要

A hydrothermal approach was developed to synthesize monodisperse Li_9V_3(P_2O_7)_3(PO_4)_2 microspheres consisting of nanoplates arranged in an open three-dimensional mesoporous structure. Conductive polyartiline (PANI) was deposited onto the Li_9V_3(P_2O_7)_3(PO_4)_2 microspheres to increase their rate capability. The samples were investigated using X-ray diffraction, scanning electron microscopy, high-resolution transmission electron microscopy, N_2 adsorption-desorption, tap density, Fourier transform infrared spectroscopy, and electrochemical methods. The Li_9V_3(P_2O_7)_3(PO_4)_2 microspheres were found to have excellent rate capability and cycle stability, exhibiting a discharge capacity of 139mAhg~(-1) at 0.1 C, which remained approximately 110mAhg~(-1) at 5 C and 94mAhg~(-1) at 10C for a total of 500 cycles at 2.5-4.6 V.
机译：开发了一种水热法来合成单分散的Li_9V_3（P_2O_7）_3（PO_4）_2微球，该微球由排列成开放的三维介孔结构的纳米板组成。导电聚artiline（PANI）沉积在Li_9V_3（P_2O_7）_3（PO_4）_2微球上以提高其定速能力。使用X射线衍射，扫描电子显微镜，高分辨率透射电子显微镜，N_2吸附-解吸，振实密度，傅里叶变换红外光谱和电化学方法对样品进行了研究。发现Li_9V_3（P_2O_7）_3（PO_4）_2微球具有出色的倍率能力和循环稳定性，在0.1 C的放电容量为139mAhg〜（-1），在5 C的放电容量约为110mAhg〜（-1）。在10-C下为94mAhg〜（-1）在2.5-4.6 V下共进行500次循环。

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  • 来源
    《Materials Letters》 |2013年第1期|247-251|共5页
  • 作者

    G.F. Gu; D.M. Tang; P. Wu; H.Y. Tian; D.G. Tong;

  • 作者单位

    Mineral Resources Chemistry Key Laboratory of Sichuan Higher Education Institutions, Chengdu 610059, China,Institute of Creen Catalysis and Synthesis, College of Materials and Chemistry & Chemical Engineering, Chengdu University of Technology, Chengdu 610059, China;

    Mineral Resources Chemistry Key Laboratory of Sichuan Higher Education Institutions, Chengdu 610059, China,Institute of Creen Catalysis and Synthesis, College of Materials and Chemistry & Chemical Engineering, Chengdu University of Technology, Chengdu 610059, China;

    Mineral Resources Chemistry Key Laboratory of Sichuan Higher Education Institutions, Chengdu 610059, China,Institute of Creen Catalysis and Synthesis, College of Materials and Chemistry & Chemical Engineering, Chengdu University of Technology, Chengdu 610059, China;

    Mineral Resources Chemistry Key Laboratory of Sichuan Higher Education Institutions, Chengdu 610059, China,Institute of Creen Catalysis and Synthesis, College of Materials and Chemistry & Chemical Engineering, Chengdu University of Technology, Chengdu 610059, China;

    Mineral Resources Chemistry Key Laboratory of Sichuan Higher Education Institutions, Chengdu 610059, China,Institute of Creen Catalysis and Synthesis, College of Materials and Chemistry & Chemical Engineering, Chengdu University of Technology, Chengdu 610059, 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

    composite materials; microstructure; hydrothermal method; Li_9V_3(P_2O_7)_3(PO_4)_2; cathode;

    机译：复合材料;微观结构水热法Li_9V_3（P_2O_7）_3（PO_4）_2;阴极;

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