Synthesis and Characterization of rGO-Anchored MnO2 Nanorods and their Application in Supercapacitors as Electrode Material

IF 2.2 4区 工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC Journal of Electronic Materials Pub Date : 2024-11-18 DOI:10.1007/s11664-024-11562-3
J. Salamon, A. Simi, H. Joy Prabu, A. Felix Sahayaraj, A. Joseph Sagaya Kennedy, J. Beny, V. Snowlin, R. R. Gopi, I. Johnson, Amanullah Fatehmulla
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Abstract

Supercapacitors have been given significant consideration as advanced energy storage devices owing to their rapid charging capabilities, exceptional stability, and high retention performance, aligning with the demands of modern technologies. In the current investigation, a hybrid nanocomposite containing MnO2 nanorods anchored onto reduced graphene oxide (rGO) was made via a hydrothermal route, demonstrating superior supercapacitive behavior. The nanocomposite was extensively characterized through functional, structural, morphological, and electrochemical analyses, and subsequently utilized as supercapacitor electrode material. Electrochemical evaluations were conducted in a 3-electrode system using the electrolyte of 1 M Na2SO4, revealing an impressive specific capacitance of about 398 F g-1. Notably, the electrode exhibited remarkable long-term stability, with a retention value of 94% after 5000 charge–discharge cycles. These results position the rGO-MnO2 hybrid as an auspicious candidate for future supercapacitor applications.

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超级电容器具有快速充电能力、优异的稳定性和高保持性能,符合现代技术的要求,因此被视为先进的储能设备。在目前的研究中,通过水热法制备了一种包含锚定在还原氧化石墨烯(rGO)上的 MnO2 纳米棒的混合纳米复合材料,显示出卓越的超级电容器性能。该纳米复合材料通过功能、结构、形态和电化学分析进行了广泛表征,随后被用作超级电容器电极材料。在使用 1 M Na2SO4 电解质的 3 电极系统中进行了电化学评估,结果显示其比电容高达 398 F g-1。值得注意的是,该电极表现出显著的长期稳定性,在经过 5000 次充放电循环后,保持值达到 94%。这些结果使 rGO-MnO2 杂化物成为未来超级电容器应用的理想候选材料。
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来源期刊
Journal of Electronic Materials
Journal of Electronic Materials 工程技术-材料科学:综合
CiteScore
4.10
自引率
4.80%
发文量
693
审稿时长
3.8 months
期刊介绍: The Journal of Electronic Materials (JEM) reports monthly on the science and technology of electronic materials, while examining new applications for semiconductors, magnetic alloys, dielectrics, nanoscale materials, and photonic materials. The journal welcomes articles on methods for preparing and evaluating the chemical, physical, electronic, and optical properties of these materials. Specific areas of interest are materials for state-of-the-art transistors, nanotechnology, electronic packaging, detectors, emitters, metallization, superconductivity, and energy applications. Review papers on current topics enable individuals in the field of electronics to keep abreast of activities in areas peripheral to their own. JEM also selects papers from conferences such as the Electronic Materials Conference, the U.S. Workshop on the Physics and Chemistry of II-VI Materials, and the International Conference on Thermoelectrics. It benefits both specialists and non-specialists in the electronic materials field. A journal of The Minerals, Metals & Materials Society.
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