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首页> 外文期刊>Journal of power sources >The production of cobalt sulfide/graphene composite for use as a low-cost counter-electrode material in dye-sensitized solar cells
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The production of cobalt sulfide/graphene composite for use as a low-cost counter-electrode material in dye-sensitized solar cells

机译：用作染料敏化太阳能电池中低成本反电极材料的硫化钴/石墨烯复合材料的生产

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摘要

Cobalt sulfide (CoS)/graphene composites are prepared by a facile one-pot hydrothermal method in the presence of graphene oxide and used as a low-cost substitute for Pt to fabricate the counter electrode in dye-sensitized solar cells. TEM, SEM and AFM characterizations show that CoS nanoparticles are highly dispersed on the surface of graphene nanosheets. This unique nanostructure affords a promising syn-ergistic effect on electrocatalytic performance for the iodide/triiddide redox reaction. Electrochemical impedance spectroscopy and Tafel polarization analyses confirm that the CoS/graphene composite indeed provides simultaneously superior electrocatalytic activity and enhanced electrical conductivity as the counter electrode for dye-sensitized solar cells. Under an illumination of AM 1.5 simulated solar light (100 mW cm~(-2)), the dye-sensitized solar cell based on the CoS/graphene composite counter electrode achieves a conversion efficiency of 7.08%, which is comparable to that of the cell based on Pt electrode and much higher than those of the devices with CoS and graphene electrodes.
机译：硫化钴（CoS）/石墨烯复合材料是在氧化石墨烯存在的情况下通过简便的一锅水热法制备的，可作为Pt的低成本替代品，以在染料敏化太阳能电池中制造对电极。 TEM，SEM和AFM表征表明CoS纳米颗粒高度分散在石墨烯纳米片的表面上。这种独特的纳米结构为碘/三碘化物氧化还原反应的电催化性能提供了有希望的协同作用。电化学阻抗谱和Tafel极化分析证实，作为染料敏化太阳能电池的对电极，CoS /石墨烯复合材料的确提供了出色的电催化活性和增强的导电性。在AM 1.5模拟太阳光（100 mW cm〜（-2））的照射下，基于CoS /石墨烯复合对电极的染料敏化太阳能电池的转换效率为7.08％，可与之相比。电池基于Pt电极，远高于带有CoS和石墨烯电极的器件。

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  • 来源
    《Journal of power sources》 |2014年第10期|473-478|共6页
  • 作者

    Guiqiang Wang; Juan Zhang; Shuai Kuang; Shaomin Liu; Shuping Zhuo;

  • 作者单位

    School of Chemical Engineering, Shandong University of Technology, Zibo 255049, China,School of New Energy, Bohai University, Jizhou 121013, China;

    School of Chemical Engineering, Shandong University of Technology, Zibo 255049, China;

    School of Chemical Engineering, Shandong University of Technology, Zibo 255049, China;

    Department of Chemical Engineering, Curtin University, WA 6845, Australia;

    School of Chemical Engineering, Shandong University of Technology, Zibo 255049, 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

    Counter electrode; Cobalt sulfide; Graphene; Dye-sensitized solar cell;

    机译：对电极;硫化钴石墨烯染料敏化太阳能电池;

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