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Solid-state synthesis of the RGO-Ba(OH)2/CeO2/TiO2 novel electrode for energy storage performance

  • Carbon Letters
  • Abbr : Carbon Lett.
  • 2024, 34(2), pp.841-849
  • DOI : 10.1007/s42823-023-00665-2
  • Publisher : Korean Carbon Society
  • Research Area : Natural Science > Natural Science General > Other Natural Sciences General
  • Received : July 17, 2023
  • Accepted : January 16, 2024
  • Published : March 28, 2024

Godlaveeti Sreenivasa Kumar 1 Arla Sai Kumar 2 Somala Adinarayana Reddy 1 Sangaraju Sambasivam 3 Alothman Asma A. 4 Mushab Mohammed 4 Nagireddy Ramamanohar Reddy 1 Ramalingam Gopal 5

1Yogi Vemana University
2Yeungnam University
3United Arab Emirates University,
4King Saud University
5Department of Nanoscience and Technology, Alagappa University, Karaikudi

Accredited

ABSTRACT

In this investigation, we synthesized a novel quaternary nanocomposite, denoted as RGO-Ba(OH)2/CeO2/TiO2, through a straightforward and cost-effective solid-state synthesis approach. The as-prepared composites underwent a series of comprehensive characterizations, including XRD, FTIR, TGA-DTA, XPS, SEM, EDAX, and TEM analyses, affirming the successful synthesis of a quaternary nanocomposite with well-interconnected nanoparticles, nanorods, and sheet-like structures. Further, our electrochemical performance evaluations demonstrated that the electrochemical capacitance of the RGO-Ba(OH)2/CeO2/TiO2 nanocomposite achieved an impressive value of 445 F g−1 at a current density of 1.0 A g−1, particularly when the mass ratio of CeO2 and TiO2 was maintained at 90:10. Furthermore, the specific capacitance retained a remarkable 65% even after 2000 cycles at a current density of 6 A g−1 in a 3 mol KOH electrolyte. Comparatively, this outstanding electrochemical performance of the RGO-Ba(OH)2/CeO2/TiO2 (90:10) nanocomposite can be attributed to several factors. These include the favorable electrical conductivity and large specific surface area provided by graphene, TiO2, and Ba(OH)2, the enhanced energy density and extended cycle life resulting from the presence of CeO2, and the synergistic contributions among all four components. Therefore, the RGO-Ba(OH)2/CeO2/TiO2 nanocomposite emerges as a highly promising electrode material for supercapacitors.

Citation status

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