Designing a One-Pot Ternary Fe-Mn-Zn Oxide Positive Electrode with Enhanced Energy-Storage Properties for Hybrid Supercapacitors
description: In recent years, ternary metal-oxide nanocomposite-based active electrodes have been investigated more effectively for supercapacitor applications due to the existence of a greater number of electroactive sites and the synergistic effect of three different transition-metal ions. Herein, Fe-Mn-Zn oxide ternary nanocomposites are synthesized using a simple and cost-effective one-pot hydrothermal approach. The characterizations of XRD, FTIR, FESEM, EDX, HRTEM, and XPS are analyzed for the synthesized Fe-Mn-Zn oxide nanocomposites to study their phases, functional groups, morphologies, purity, and binding energies. The electrochemical characteristics for the developed electrodes are studied in a three-electrode technique using CV, GCD, EIS, and a cyclic stability test. As expected, the ternary nanocomposite electrode of Fe-Mn-Zn oxide reveals a maximum specific capacitance (Cspc1) of 1673.4 F/g in comparison to other developed electrodes of ZnFe2O4 (271.7 F/g) and ZnMn2O4 (412.7 F/g) at the appropriate scan rate of 10 mV/s. In addition, the Fe-Mn-Zn oxide ternary nanocomposite active electrode exhibits 2616.25 F/g of total capacitance (qT**), 686.94 F/g of outer capacitance (qO**), and 1929.30 F/g of inner capacitance (qI**) which are determined by Trasatti analysis. Moreover, the fabricated hybrid supercapacitor device provides a good specific capacitance of 320.8 F/g, a high energy density of 75.3 Wh/kg at the power density of 649.9 W/kg at 1 A/g of current density range, and 88.75% of superior capacitive retention over 10,000 cycles at 10 A/g. Therefore, a ternary metal-oxide nanocomposite electrode is proposed to be a promising material for energy-storage devices. 2024 American Chemical Society.
creator: Subramaniyan, Suganya; Veerasingam, Muthulakshmi; Feroz Gandhi, Kousi; Arumugam, Venkatesan; Muthusamy, Krishna Kumar; Sakkarapani, Sudhahar
source: Energy and Fuels;Volume;39;Issue;1;pp.906-920
publisher: American Chemical Society
date: 01-01-2025
rights: Restricted Access; Hardcopy may be available in the library
relation: ISSN: 8870624; CODEN: ENFUE
format: online
language: English
type: Article
coverage: Subramaniyan S., Department of Physics, Alagappa University, Tamil Nadu, Karaikudi, 630003, India; Veerasingam M., Department of Chemistry, Mount Zion College of Engineering and Technology, Thirumayam, Pudukkottai, 622 507, India; Feroz Gandhi K., Department of Physics, Alagappa University, Tamil Nadu, Karaikudi, 630003, India; Arumugam V., Department of Physics, Panimalar Engineering College, Tamilnadu, Chennai, 600 123, India; Muthusamy K.K., Department of Physics and Electronics, CHRIST (Deemed to be University), Bengaluru, 560 029, India; Sakkarapani S., Department of Physics, Alagappa University, Tamil Nadu, Karaikudi, 630003, India