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Nano Research 2019, 12(1): 159-163 https://doi.org/10.1007/s12274-018-2195-5
Research Article | Issue | Published: 17 September 2018

Porous N-doped-carbon coated CoSe2 anchored on carbon cloth as 3D photocathode for dye-sensitized solar cell with efficiency and stability outperforming Pt

Show Author's Information Wenli Lu§,  Rui Jiang§,  Xiong Yin( ),  Leyu Wang( )
State Key Laboratory of Chemical Resource Engineering,Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology,Beijing,100029,China;

§ Wenli Lu and Rui Jiang contributed equally to this work.

Keywords:
three-dimensional (3D) photocathode, metal-organic framework, selenization process, CoSe2, carbon cloth, tri-iodide reduction reaction
Topics:
CarbonCatalyst activityCrystalline materials Doping (additives)OrganometallicsPhotocathodesSelenium compounds
Cite this article:
Lu W, Jiang R, Yin X, et al. Porous N-doped-carbon coated CoSe2 anchored on carbon cloth as 3D photocathode for dye-sensitized solar cell with efficiency and stability outperforming Pt. Nano Research, 2019, 12(1): 159-163. https://doi.org/10.1007/s12274-018-2195-5
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Abstract Full text Electronic supplementary material About this article

Photocathode with superior catalytic activity, long-term stability, and fast mass/electron transfer is highly desirable but challenging for dye-sensitized solar cell (DSC). Herein, the ZIF-67 grown on carbon cloth is successfully transformed into CoSe2 embedded in N-doped carbon nanocage (CoSe2/N-C) via a growth-carbonization-selenization process. The carbon cloth supported CoSe2/N-C, as photocathode of DSC, demonstrates a good long-term stability and high photovoltaic efficiency (8.40%), outperforming Pt. The good efficiency can be attributed to the high catalytic activity of CoSe2, fast mass transfer of porous three-dimensional (3D) structure, and good electron transport derived from the intimate contact between CoSe2 and highly conductive carbon cloth. The high stability would be ascribed to N-doped carbon coating that perfectly prevents CoSe2 from decomposition. This work will pave the way to develop highly efficient and stable Pt-free photocathode for DSC.


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About this article

Porous N-doped-carbon coated CoSe2 anchored on carbon cloth as 3D photocathode for dye-sensitized solar cell with efficiency and stability outperforming Pt

Show Author's information Wenli Lu§, Rui Jiang§, Xiong Yin( ), Leyu Wang( )
State Key Laboratory of Chemical Resource Engineering,Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology,Beijing,100029,China;

§ Wenli Lu and Rui Jiang contributed equally to this work.

Abstract

Photocathode with superior catalytic activity, long-term stability, and fast mass/electron transfer is highly desirable but challenging for dye-sensitized solar cell (DSC). Herein, the ZIF-67 grown on carbon cloth is successfully transformed into CoSe2 embedded in N-doped carbon nanocage (CoSe2/N-C) via a growth-carbonization-selenization process. The carbon cloth supported CoSe2/N-C, as photocathode of DSC, demonstrates a good long-term stability and high photovoltaic efficiency (8.40%), outperforming Pt. The good efficiency can be attributed to the high catalytic activity of CoSe2, fast mass transfer of porous three-dimensional (3D) structure, and good electron transport derived from the intimate contact between CoSe2 and highly conductive carbon cloth. The high stability would be ascribed to N-doped carbon coating that perfectly prevents CoSe2 from decomposition. This work will pave the way to develop highly efficient and stable Pt-free photocathode for DSC.

Keywords: three-dimensional (3D) photocathode, metal-organic framework, selenization process, CoSe2, carbon cloth, tri-iodide reduction reaction

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Publication history
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Acknowledgements

Publication history

Received: 29 June 2018
Revised: 29 August 2018
Accepted: 04 September 2018
Published: 17 September 2018
Issue date: January 2019

Copyright

© Tsinghua University Press and Springer-Verlag GmbH Germany, part of Springer Nature 2018

Acknowledgements

Acknowledgements

This research was supported in part by the National Natural Science Foundation of China (Nos. 21725501, 21771019, 21475007 and 21675009), and the Fundamental Research Funds for the Central Universities (Nos. buctrc201706, buctrc201815 and buctrc201812). We also thank the support from the Public Hatching Platform for Recruited Talents of Beijing University of Chemical Technology.

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