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Metal Oxide/Carbide/Carbon Nanocomposites: In Situ Synthesis, Characterization, Calculation, and their Application as an Efficient Counter Electrode Catalyst for Dye-Sensitized Solar Cells

Authors

  • Sining Yun,

    Corresponding author
    1. School of Materials & Mineral Resources, Xi'an University of Architecture and Technology, No.13, Yanta Road, Xi'an, Shaanxi, 710055, PR China
    • Sining Yun, School of Materials & Mineral Resources, Xi'an University of Architecture and Technology, No.13, Yanta Road, Xi'an, Shaanxi, 710055, PR China

      Tingli Ma, State Key laboratory of Fine Chemicals, Dalian University of Technology, No. 2 Linggong Road, Dalian, 116024, PR China.

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  • Hong Zhang,

    1. State Key laboratory of Fine Chemicals, Dalian University of Technology, No. 2 Linggong Road, Dalian, 116024, PR China
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  • Huihai Pu,

    1. Department of Mechanical Engineering, University of Wisconsin-Milwaukee, 3200 North Cramer Street, Milwaukee, WI 53211 USA
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  • Junhong Chen,

    1. Department of Mechanical Engineering, University of Wisconsin-Milwaukee, 3200 North Cramer Street, Milwaukee, WI 53211 USA
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  • Anders Hagfeldt,

    1. Department of Physical and Analytical Chemistry, Uppsala University, Box 259, SE-751 05, Uppsala Sweden
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  • Tingli Ma

    Corresponding author
    1. State Key laboratory of Fine Chemicals, Dalian University of Technology, No. 2 Linggong Road, Dalian, 116024, PR China
    • Sining Yun, School of Materials & Mineral Resources, Xi'an University of Architecture and Technology, No.13, Yanta Road, Xi'an, Shaanxi, 710055, PR China

      Tingli Ma, State Key laboratory of Fine Chemicals, Dalian University of Technology, No. 2 Linggong Road, Dalian, 116024, PR China.

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Abstract

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TaO- and TaC-based nanocomposites as novel and low-cost counter electrodes (CEs) in dye-sensitized solar cells (DSCs) show outstanding electrocatalytic activity and photovoltaic performance, superior to the Pt electrode. Based on the first-principles density functional theory (DFT) calculations, I3 is chemisorbed onto the TaO surface as opposed to physical adsorption on the TaC surface. The TaO-based composite is more efficient than the TaC-based composite as a CE in DSCs.

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