Recent developments in MnNiO3@rGO nanohybrid for advanced energy storage devices

IF 2.3 4区材料科学 Q2 MATERIALS SCIENCE, CERAMICS Journal of Sol-Gel Science and Technology Pub Date : 2024-09-13 DOI:10.1007/s10971-024-06527-1

Najla AlMasoud, Mahmood Ali, Taghrid S. Alomar, Amal A. Al-wallan, Hafiz Muhammad Tahir Farid, Zeinhom M. El-Bahy

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Abstract

The demand of reduced graphene oxide-based nanosheets decorated with metal oxides in electrochemical energy storage devices has increased in recent years. The hydrothermal preparation of MnNiO₃ and MnNiO₃@rGO nanohybrid has been described in the current work. The prepared samples were evaluated structurally, morphologically and electrochemically using a variety of analytical instruments. The MnNiO₃@rGO nanohybrid showed specific capacitance 1507 F/g calculated from the GCD plot with the exceptional cyclic stability of 5000th cycles at 1 A/g with a lower charge transfer resistance of 0.18 Ω. The exceptional performance of the MnNiO₃@rGO nanohybrid can be due to the hierarchical structure and improvement in charge transfer capability. During redox process MnNiO₃@rGO nanohybrid provides more active sites and a shorter channel for ion transport. As a result, the MnNiO₃@rGO nanohybrid electrochemical performance can be significantly improved and its potential in energy storage systems.

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用于先进储能设备的 MnNiO3@rGO 纳米杂化技术的最新进展

近年来，电化学储能装置对装饰有金属氧化物的还原氧化石墨烯基纳米片的需求不断增加。本研究介绍了水热法制备 MnNiO3 和 MnNiO3@rGO 纳米杂化物的方法。使用多种分析仪器对制备的样品进行了结构、形态和电化学评估。根据 GCD 图计算，MnNiO3@rGO 纳米杂化物的比电容为 1507 F/g，在 1 A/g 的条件下可循环 5000 次，循环稳定性极佳，电荷转移电阻较低，为 0.18 Ω。在氧化还原过程中，MnNiO3@rGO 纳米杂化物提供了更多的活性位点和更短的离子传输通道。因此，MnNiO3@rGO 纳米杂化物的电化学性能可以得到显著提高，并具有在储能系统中应用的潜力。

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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.