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Synthesis of CoS@NiS core/shell nanoarrays as efficient counter electrode for dye-sensitized solar cells

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Abstract

Co3O4@NiO core/shell nanowire arrays were prepared on FTO substrate by a solution-based method and then the Co3O4/NiO were converted to CoS/NiS core/shell structure via an ion-exchange reaction. The dye-sensitized solar cell (DSSC) using CoS/NiS nanowire arrays as the counter electrode (CE) achieves a power conversion efficiency of 6.64%, which is higher than that of samples using individual CoS CE (5.75%) and individual NiS CE (0.64%). This result indicates the unique core/shell structure possesses better catalytic properties. The low cost and high conversion efficiency make the CoS@NiS core/shell nanoarrays competitive as counter electrodes in DSSCs.

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Acknowledgements

We acknowledge the financial supports from the National Natural Science Foundation of China (Grant No. 51202037), the Science and Technology Program of Guangdong Province of China (No. 2016A010104020), the Training Plan of Outstanding Young Teachers of Universities in Guangdong Province (Grant No. YQ2015055) and Pearl River S&T Nova Program of Guangzhou (Grant No. 201610010116). We thank Dr. H. J. Fan (Nanyang Technological University) for his helpful discussions.

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Authors and Affiliations

  1. Guangdong Provincial Key Laboratory of Functional Soft Condensed Matter, School of Materials and Energy, Guangdong University of Technology, Guangzhou, 510006, China

    Chenghui Li, Aixiang Wei, Jun Liu, Zhiming Xiao, Zhen Liu & Yu Zhao

  2. Department of Information Science, Xinhua College of Sun Yat-sen University, Guangzhou, 510520, China

    Aixiang Wei

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  1. Chenghui Li
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  2. Aixiang Wei
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  3. Jun Liu
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  4. Zhiming Xiao
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  5. Zhen Liu
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  6. Yu Zhao
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Correspondence to Jun Liu.

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Li, C., Wei, A., Liu, J. et al. Synthesis of CoS@NiS core/shell nanoarrays as efficient counter electrode for dye-sensitized solar cells. J Mater Sci: Mater Electron 28, 4904–4907 (2017). https://doi.org/10.1007/s10854-016-6138-1

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  • DOI: https://doi.org/10.1007/s10854-016-6138-1

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