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Pt-like Behavior of High-Performance Counter Electrodes Prepared from Binary Tantalum Compounds Showing High Electrocatalytic Activity for Dye-Sensitized Solar Cells

Authors

  • Dr. 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), Fax: (+86) 029-85535724
    • School of Materials & Mineral Resources, Xi'an University of Architecture and Technology, No.13, Yanta Road, Xi'an, Shaanxi, 710055 (PR China), Fax: (+86) 029-85535724
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  • Mingxing Wu,

    1. State Key laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, No. 2 Linggong Rd. Ganjingzi District, Dalian, 116024 (PR China), Fax: (+86) 0411-39893820
    2. Present address: Department of Chemistry and Material Science, Key Laboratory of Inorganic Nano-materials of Hebei Province, Hebei Normal Universit, (PR China)
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  • Yudi Wang,

    1. State Key laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, No. 2 Linggong Rd. Ganjingzi District, Dalian, 116024 (PR China), Fax: (+86) 0411-39893820
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  • Jing Shi,

    1. MOE Key Laboratory for Non-equilibrium, Synthesis and Modulation of Condensed Matter, School of Science, Xi'an Jiaotong University, No.28, Xianning West Road, Xi'an, Shaanxi, 710049 (PR China)
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  • Xiao Lin,

    1. State Key laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, No. 2 Linggong Rd. Ganjingzi District, Dalian, 116024 (PR China), Fax: (+86) 0411-39893820
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  • Prof. Anders Hagfeldt,

    1. Department of Physical and Analytical Chemistry, Uppsala University, Box 259, 751 05, Uppsala (Sweden)
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  • Prof. Tingli Ma

    Corresponding author
    1. State Key laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, No. 2 Linggong Rd. Ganjingzi District, Dalian, 116024 (PR China), Fax: (+86) 0411-39893820
    • State Key laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, No. 2 Linggong Rd. Ganjingzi District, Dalian, 116024 (PR China), Fax: (+86) 0411-39893820
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Abstract

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Ta-based compounds show Pt-like behavior: Binary tantalum compounds as counter electrodes (CEs) in dye-sensitized solar cells (DSCs) demonstrate Pt-like electrocatalytic activity and competitive photovoltaic performance, matching the performance of DSCs with Pt CEs. The first-principle density functional theory (DFT) calculations provide a strategy for understanding the relationship between the electronic structure and the catalytic activity of CE catalysts in DSCs.

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