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Issue 19, 2018
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Highly efficient ZnO-based dye-sensitized solar cells with low-cost Co–Ni/carbon aerogel composites as counter electrodes

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Abstract

Dye-sensitized solar cells (DSSCs) have many advantages, but the use of expensive platinum counter electrodes (CEs) limits their industrial applications. In this work, a Co–Ni/carbon aerogel composite with a unique three-dimensional network structure and high specific surface area was prepared through simple ion exchange and carbonization of low-cost sodium alginate supramolecular hydrogels. Using this metal/carbon aerogel composite as the CE (hereafter denoted as CAE) of ZnO-based DSSCs, a photoelectric conversion efficiency (PCE) of 5.08% was obtained. This value was 94.44% of the PCE obtained using Pt. Analysis of current–voltage curves, cyclic voltammograms, and electrochemical impedance spectra revealed that the fabricated CAE had higher catalytic activity than a Pt CE and comparable charge-transfer ability. The adhesion of the CAE onto FTO was also strong with carbon paste as an adhesive.

Graphical abstract: Highly efficient ZnO-based dye-sensitized solar cells with low-cost Co–Ni/carbon aerogel composites as counter electrodes

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Publication details

The article was received on 06 Jul 2018, accepted on 26 Aug 2018 and first published on 29 Aug 2018


Article type: Paper
DOI: 10.1039/C8NJ03376E
Citation: New J. Chem., 2018,42, 16329-16334
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    Highly efficient ZnO-based dye-sensitized solar cells with low-cost Co–Ni/carbon aerogel composites as counter electrodes

    J. Cheng, J. Ma, Y. Ma, C. Zhou, Y. Qiang, X. Zhou, J. Yang, H. Shi and Y. Xie, New J. Chem., 2018, 42, 16329
    DOI: 10.1039/C8NJ03376E

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