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A bifunctional nanocomposite of hybrid quaternary nanocomposite as electrodes for an integrated Pt-free DSSC powered supercapacitor–photosupercapacitor

  • Carbon Letters
  • Abbr : Carbon Lett.
  • 2024, 34(6), pp.1593-1608
  • DOI : 10.1007/s42823-024-00762-w
  • Publisher : Korean Carbon Society
  • Research Area : Natural Science > Natural Science General > Other Natural Sciences General
  • Received : November 29, 2023
  • Accepted : June 5, 2024
  • Published : July 1, 2024

Patrick Joselene Suzan Jennifer 1 Subrayapillai Ramakrishna Niranjana 2 Sankar Muthupandi 1 Ayyar Dinesh 3 Joseph Madhavan 1 Moses Victor Antony Raj 4 Ammavasi Malarkodi 5 Ayyar Manikandan 6

1Department of Physics Loyola College
2Department of Physics, Panimalar Engineering College
3Affiliated to the University of Madras
4Loyola Institute of Frontier Energy
5Tamil Nadu State Council for Science and Technology (TNSCST)
6Department of Chemistry, Karpagam Academy of Higher Education

Accredited

ABSTRACT

Graphene-based solar cells and supercapacitors integrated into photosupercapacitors represent a pioneering advancement. These devices leverage the exceptional properties of graphene, such as high conductivity and large surface area, to enhance both solar energy conversion and energy storage. The integration of these technologies into photosupercapacitors creates a multifunctional device capable of harnessing solar energy and storing it efficiently. This innovative approach holds promise for sustainable and versatile energy solutions, marking a significant step towards developing efficient and compact energy storage systems. This integration addresses the intermittent nature of solar power generation by providing a continuous and reliable power supply through energy storage. Supercapacitors are one such energy device with a high-power density and excellent specific capacitance which is integrated will a dye-sensitized solar cell (DSSC) comprising a single system of photosupercapacitor. A novel electrode material of NiO/CuO/Co3O4/rGO was synthesized which serves as the Pt-free counter electrode of DSSC and working or storage electrode of supercapacitor later was used as the intermediate electrode and storage electrode of a photosupercapacitor. The integrated photosupercapacitor device had a photovoltage of 0.81 V with areal-specific capacitance, energy and power density of 190.12 mF cm−2, 17.325 μW h cm−2 and 0.162 mW cm−2, respectively. The device self-discharged in 385 s with an overall conversion efficiency of 2.17%, resulting in a self-charged energy device.

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