Reduced graphene oxide supported SnMn2O4 spinel for advanced supercapacitor applications

IF 3.2 4区材料科学 Q2 MATERIALS SCIENCE, CERAMICS

Journal of Sol-Gel Science and Technology Pub Date : 2025-06-07 DOI:10.1007/s10971-025-06807-4

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

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Abstract

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 (S_E, 65.90 Wh/kg) and specific power (S_P, 250 W/kg), as-prepared SnMn₂O₄/rGO nanohybrid electrode displayed high specific capacitance (C_s, 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

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还原氧化石墨烯支持SnMn2O4尖晶石用于先进的超级电容器应用

这项工作介绍了一种由尖晶石（SnMn2O4）和还原氧化石墨烯（rGO）组成的创新复合材料的生产和电化学表征，该材料用于超级电容器的应用。通过超声波合成纳米杂化物，使SnMn2O4纳米片均匀分布在氧化石墨烯薄片上。制备的SnMn2O4/rGO纳米杂化电极具有显著的比能量（SE, 65.90 Wh/kg）和比功率（SP, 250 W/kg），在3.0 M KOH， 1 a /g下具有较高的比电容（Cs, 1898 F/g），并且在5000次循环后比原始SnMn2O4具有优异的循环耐久性。纳米杂化材料的电化学效率的提高与SnMn2O4和还原氧化石墨烯的协同作用有关，这为接触和有效的电荷转移途径提供了大量的空间。除了展示用于超级电容器电极的新型SnMn2O4/rGO材料的前景外，本研究还详细介绍了一种制造具有优异性能的廉价纳米杂化材料的新方法，这可能在未来的各种应用中都很有用。图形抽象

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Sol-Gel Science and Technology 工程技术-材料科学：硅酸盐

CiteScore

4.70

自引率

4.00%

发文量

280

审稿时长

2.1 months

期刊介绍： The primary objective of the Journal of Sol-Gel Science and Technology (JSST), the official journal of the International Sol-Gel Society, is to provide an international forum for the dissemination of scientific, technological, and general knowledge about materials processed by chemical nanotechnologies known as the "sol-gel" process. The materials of interest include gels, gel-derived glasses, ceramics in form of nano- and micro-powders, bulk, fibres, thin films and coatings as well as more recent materials such as hybrid organic-inorganic materials and composites. Such materials exhibit a wide range of optical, electronic, magnetic, chemical, environmental, and biomedical properties and functionalities. Methods for producing sol-gel-derived materials and the industrial uses of these materials are also of great interest.