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Issue 49, 2018, Issue in Progress
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Enhanced electrocatalytic performance of nickel diselenide grown on graphene toward the reduction of triiodide redox couples

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Abstract

The promising activity of nickel diselenide (NiSe2) towards electrocatalysis has made it especially attractive in energy conversion fields. However, NiSe2 with high electrocatalytic performance always requires complicated fabrication or expensive conductive polymers, resulting in the scale-up still being challenging. Herein, we introduce a simple and cost-effective synthesis of NiSe2 dispersed on the surface of graphene (NiSe2/RGO NPs). NiSe2/RGO NPs exhibited enhanced electrocatalytic performance and long-term stability for the reduction reaction of triiodide redox couples in dye-sensitized solar cells (DSSCs). Leveraging the advantageous features, the DSSC fabricated with NiSe2/RGO NPs as CE had a smaller charge-transfer resistance (Rct) value and higher short-circuit current density and fill factor than naked NiSe2 NPs. Additionally, NiSe2/RGO NPs achieved a PCE of 7.76%, higher than that of pure NiSe2 (6.51%) and even exceeding that of Pt (7.56%). These prominent features demonstrated that the NiSe2/RGO NPs in this work are a promising cheap and efficient electrocatalyst to replace state-of-the-art Pt.

Graphical abstract: Enhanced electrocatalytic performance of nickel diselenide grown on graphene toward the reduction of triiodide redox couples

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Publication details

The article was received on 16 Jun 2018, accepted on 17 Jul 2018 and first published on 06 Aug 2018


Article type: Paper
DOI: 10.1039/C8RA05167D
Citation: RSC Adv., 2018,8, 28131-28138
  • Open access: Creative Commons BY-NC license
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    Enhanced electrocatalytic performance of nickel diselenide grown on graphene toward the reduction of triiodide redox couples

    X. Zhang, H. Zhang, X. Wang and X. Zhou, RSC Adv., 2018, 8, 28131
    DOI: 10.1039/C8RA05167D

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