Journal of Inorganic Materials, Volume. 36, Issue 2, 203(2021)

Cobalt-doped Hollow Carbon Framework as Sulfur Host for the Cathode of Lithium Sulfur Battery

Gaoyao JIN... Haichuan HE, Jie WU, Mengyuan ZHANG, Yajuan LI* and Younian LIU |Show fewer author(s)
Author Affiliations
  • Hunan Provincial Key Laboratory of Micro & Nano Materials Interface Science, College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China
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    Figures & Tables(19)
    Schematic illustration for the synthesis steps of hollow Co/C composite and its effect for the resulting electrode
    (a) XRD pattern, (b) Raman spectrum, (c) XPS spectrum and (d) N2 adsorption/desorption isotherm of Co/C-700 with insert in (d) showing pore size distribution
    XRD pattern of UWC-700
    (a) TGA curve of Co/C-700 in air and (b) XRD pattern of the final product
    (a, b) TEM, (c) high-resolution TEM (HRTEM) images and (d) EDS elemental mappings (Co, C and O) of Co/C-700
    N2 adsorption/desorption isotherms (a) and pore size distributions (b) of UWC-700 and HEC-700
    SEM image of Co/C-700
    XRD pattern (a) and SEM image (b) of HEC-700
    TGA curves of S@Co/C-700 and S@HEC-700 under N2 atmosphere
    XPS spectrum of S@Co/C-700 composite
    High resolution XPS spectra of Co/C-700(a) C1s; (b) O1s; (c) Co2p
    High resolution XPS spectra for S@Co/C-700 composites
    Photograph of static adsorption test of HEC-700 and Co/C-700 after standing for 1 h
    Multi-cycle CV curves of Co/C-700 based symmetric cells at 1 mV∙s-1 (a) and increased rates (b), and multi-cycle CV curves of HEC-700 at 1 mV∙s-1 (c) and increased rates (d)
    CV curves of (a) Co/C-700 and (b) HEC-700 based symmetric cells with and without 0.2 mol∙L-1 Li2S6 at 1 mV∙s-1; (c) CV curves and (d) EIS plots of S@Co/C-700 and S@HEC-700 electrodes
    (a) Rate capabilities at various rates from 0.5C to 10C and (b) cycling stabilities at 1C for S@Co/C-700 and S@HEC-700 electrodes
    Voltage profiles of S@HEC-700 (a) and S@Co/C-700 (b) electrodes at various rates from 0.5C to 10C
    (a) Cycling stabilities of S@Co/C-700 and S@HEC-700 electrodes at 2C; (b) Cycling performance of S@Co/C-700 at 5C and 10C
    • Table 1.

      BET surface area and pore volume distribution of UWC-700, Co/C-700 and HEC-700

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      Table 1.

      BET surface area and pore volume distribution of UWC-700, Co/C-700 and HEC-700

      SampleSBET/(m2∙g-1)Vtotal/(cm3∙g-1)Pore volume/%
      MicroMesoMacro
      UWC-70015.090.0261.7698.240
      Co/C-700376.130.5228.8562.768.49
      HEC-700369.530.5425.4768.176.36
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    Gaoyao JIN, Haichuan HE, Jie WU, Mengyuan ZHANG, Yajuan LI, Younian LIU. Cobalt-doped Hollow Carbon Framework as Sulfur Host for the Cathode of Lithium Sulfur Battery[J]. Journal of Inorganic Materials, 2021, 36(2): 203

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    Paper Information

    Category: RESEARCH LETTERS

    Received: Mar. 27, 2020

    Accepted: --

    Published Online: Nov. 24, 2021

    The Author Email: LI Yajuan (yajuanli@csu.edu.cn)

    DOI:10.15541/jim20200161

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