Electrocatalytic Activity of a 2D Phosphorene‐Based Heteroelectrocatalyst for Photoelectrochemical Cells |
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| Authors: | Dr Munkhbayar Batmunkh Dr Aabhash Shrestha Munkhjargal Bat‐Erdene Dr Md Julker Nine Dr Cameron J Shearer Dr Christopher T Gibson Dr Ashley D Slattery Dr Sherif Abdulkader Tawfik Prof Michael J Ford Prof Sheng Dai Prof Shizhang Qiao Joseph G Shapter |
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| Institution: | 1. Flinders Centre for NanoScale Science and Technology, College of Science and Engineering, Flinders University, Adelaide, South Australia, Australia;2. School of Chemical Engineering, The University of Adelaide, Adelaide, South Australia, Australia;3. Nanotechnology Research Laboratory, Research School of Engineering, Australian National University, Canberra, Australia;4. Adelaide Microscopy, The University of Adelaide, Adelaide, South Australia, Australia;5. School of Mathematical and Physical Sciences, University of Technology Sydney, Ultimo, New South Wales 2, Australia;6. School of Chemical Engineering and Advanced Materials, Newcastle University, Newcastle Upon Tyne, UK |
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| Abstract: | Research into efficient synthesis, fundamental properties, and potential applications of phosphorene is currently the subject of intense investigation. Herein, solution‐processed phosphorene or few‐layer black phosphorus (FL‐BP) sheets are prepared using a microwave exfoliation method and used in photoelectrochemical cells. Based on experimental and theoretical (DFT) studies, the FL‐BP sheets are found to act as catalytically active sites and show excellent electrocatalytic activity for triiodide reduction in dye‐sensitized solar cells. Importantly, the device fabricated based on the newly designed cobalt sulfide (CoSx) decorated nitrogen and sulfur co‐doped carbon nanotube heteroelectrocatalyst coated with FL‐BP (FL‐BP@N,S‐doped CNTs‐CoSx) displayed an impressive photovoltaic efficiency of 8.31 %, outperforming expensive platinum based cells. This work paves the way for using phosphorene‐based electrocatalysts for next‐generation energy‐storage systems. |
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| Keywords: | 2D materials black phosphorus electrocatalysis photochemistry solar cells |
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