Effect of molybdenum disulfide on the performance of polyaniline based counter electrode for dye-sensitized solar cell applications

Ghafoor, Usman and Aqeel, Anas Bin and Zaman, Uzair Khaleeq Uz and Zahid, Taiba and Noman, Muhammad and Ahmad, Muhammad Shakeel (2021) Effect of molybdenum disulfide on the performance of polyaniline based counter electrode for dye-sensitized solar cell applications. Energies, 14 (13). ISSN 1996-1073, DOI https://doi.org/10.3390/en14133786.

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Dye-sensitized solar cells are gaining interest in the aerospace industry, extending their applications from solar-powered drones to origami-style space-based solar power stations due to their flexibility, light weightiness, and transparency. The major issue with its widespread commercial use is the employment of expensive Pt-based counter electrodes. In this study, an attempt has been made to replace the Pt with Polyaniline (PANI)/Molybdenum sulfide (MoS2) nanocomposite. The nanocomposites i.e., PANI-0.5wt% MoS2, PANI-2wt%MoS2, PANI-5wt%MoS2, and PANI-7wt%MoS(2)and PANI-9wt%MoS2, have been synthesized and compared with standard Pt-based CE. Scanning electron microscopy, transmission electron microscopy, and X-ray diffraction methods have been utilized to study both surface morphology and structural composition. Fourier transform infrared has also been used to identify redox-active functionalities. Electron impedance spectroscopy and cyclic voltammetry have been employed to study electron transfer and catalytic activity. Finally, I-V testing has been conducted using a sun simulator. A maximum efficiency of 8.12% has been observed with 7wt% MoS2 in the PANI matrix at 6 mu m thickness, which is 2.65% higher compared to standard Pt-based CE (7.91%). This is due to high electronic conduction with the addition of MoS2, improved catalytic activity, and the high surface area of the PANI nano-rods.

Item Type: Article
Funders: Higher Institution Centre of Excellence (HICoE) Program Research Grant, UMPEDAC-2020 (MOHE HICOE-UMPEDAC), Ministry of Education Malaysia, TOP100UMPEDAC, University of Malaya (RU003-2020)
Uncontrolled Keywords: Polyaniline; Dye-sensitized solar cell; Counter electrode; Molybdenum disulfide; Catalyst
Subjects: Q Science > QD Chemistry
T Technology > TK Electrical engineering. Electronics Nuclear engineering
T Technology > TP Chemical technology
Divisions: Deputy Vice Chancellor (Research & Innovation) Office > UM Power Energy Dedicated Advanced Centre
Depositing User: Ms Zaharah Ramly
Date Deposited: 29 Mar 2022 06:55
Last Modified: 29 Mar 2022 06:55
URI: http://eprints.um.edu.my/id/eprint/28305

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