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<p>This work presents the production and electrochemical characterization of an innovative composite material consisting of spinel (SnMn<sub>2</sub>O<sub>4</sub>) and reduced graphene oxide (rGO), produced for supercapacitor applications. The nanohybrid was synthesized via a straightforward ultrasonication technique, leading to the uniform distribution of SnMn<sub>2</sub>O<sub>4</sub> nanoflakes over rGO sheets. With a notable specific energy (S<sub>E</sub>, 65.90 Wh/kg) and specific power (S<sub>P</sub>, 250 W/kg), as-prepared SnMn<sub>2</sub>O<sub>4</sub>/rGO nanohybrid electrode displayed high specific capacitance (C<sub>s</sub>, 1898 F/g) in 3.0 M KOH at 1 A/g showing superb cycling durability after 5000 cycles than pristine SnMn<sub>2</sub>O<sub>4</sub>. The enhanced electrochemical efficiency of nanohybrid is associated with synergistic effects of the SnMn<sub>2</sub>O<sub>4</sub> and rGO, which provide a substantial area for contact and effective charge transfer pathways. In addition to demonstrating the promising properties of a new SnMn<sub>2</sub>O<sub>4</sub>/rGO material intended for utilization as an electrode in supercapacitors, this study also details a new method for creating inexpensive nanohybrids with exceptional performance, which might be useful in a variety of future applications.</p> Graphical Abstract <p></p>

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Reduced graphene oxide supported SnMn2O4 spinel for advanced supercapacitor applications

  • 期刊论文

  • 发表日期：

    2025年6月7日

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  • Muhammad Ashan,
  • Gaber A. M. Mersal,
  • Ahmed M. Fallatah,
  • Mohamed M. Ibrahim,
  • Khursheed Ahmad,
  • Zeinhom M. El-Bahy

摘要

This work presents the production and electrochemical characterization of an innovative composite material consisting of spinel (SnMn2O4) and reduced graphene oxide (rGO), produced for supercapacitor applications. The nanohybrid was synthesized via a straightforward ultrasonication technique, leading to the uniform distribution of SnMn2O4 nanoflakes over rGO sheets. With a notable specific energy (SE, 65.90 Wh/kg) and specific power (SP, 250 W/kg), as-prepared SnMn2O4/rGO nanohybrid electrode displayed high specific capacitance (Cs, 1898 F/g) in 3.0 M KOH at 1 A/g showing superb cycling durability after 5000 cycles than pristine SnMn2O4. The enhanced electrochemical efficiency of nanohybrid is associated with synergistic effects of the SnMn2O4 and rGO, which provide a substantial area for contact and effective charge transfer pathways. In addition to demonstrating the promising properties of a new SnMn2O4/rGO material intended for utilization as an electrode in supercapacitors, this study also details a new method for creating inexpensive nanohybrids with exceptional performance, which might be useful in a variety of future applications.

Graphical Abstract