Efficient dye-sensitized solar cell with affordable alternative to platinum free counter electrode

The study focuses on MnCO3/reduced graphene oxide (rGO) composite to investigate its capability against reduction of triiodide (I3⁻), and hence to utilise its potential as a platinum free electrode in dye-sensitized solar cells (DSSCs). The MnCO3/rGO composites were prepared with varying weight perc...

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Bibliographic Details
Published in:Colloids and surfaces. A, Physicochemical and engineering aspects Physicochemical and engineering aspects, 2025-01, Vol.705, p.135736, Article 135736
Main Authors: Tharuman, Sharmila, Chen, Tse-Wei, Chen, Shen-Ming, Tamilalagan, Elayappan, Al-onazi, Wedad A., Ali, M. Ajmal, Yu, Jaysan
Format: Article
Language:English
Subjects:
catalytic activity
cost effectiveness
Counter electrode
DSSC
electric current
electric potential difference
electrodes
graphene oxide
iodides
MnCO3/rGO composite
photons
platinum
Pt-free
reaction kinetics
solar cells
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Summary:The study focuses on MnCO3/reduced graphene oxide (rGO) composite to investigate its capability against reduction of triiodide (I3⁻), and hence to utilise its potential as a platinum free electrode in dye-sensitized solar cells (DSSCs). The MnCO3/rGO composites were prepared with varying weight percentages of rGO to identify the optimal configuration to attain enhanced catalytic performance. The MnCO3/rGO 75 wt% composite exhibited the optimal catalytic reaction kinetics for converting triiodide (I3⁻) to iodide (I⁻), achieving a photon to electron conversion efficiency (PCE) of 6.62 %, with a photocurrent density (Jsc) of 13.29 mA cm⁻², voltage (Voc) of 0.76 V, and a fill factor (FF) of 0.65 at without load. This output performance is on par with that of to that of a conventional platinum (Pt) Counter Electrode, which achieved a PCE of 6.98 %. The findings indicate that MnCO3/rGO 75 wt% composite shows significant promise, cost-effective alternative to Pt, offering efficient performance and improved material sustainability. [Display omitted] •The synthesized MnCO3/rGO composites were explored for their catalytic performance as an alternative to Pt.•The MnCO3/rGO 75 wt% composite achieved an efficiency of 6.62 %, presenting a cost-effective and more sustainable alternative to Pt.•The study underscores the potential of MnCO3/rGO composites to enhance both the performance and economic viability of DSSCs.
ISSN:0927-7757
DOI:10.1016/j.colsurfa.2024.135736