Electrochemical Supercapacitors for Energy Harvesting and Storage

A special issue of Micromachines (ISSN 2072-666X). This special issue belongs to the section "C:Chemistry".

Deadline for manuscript submissions: 31 July 2024 | Viewed by 838

Special Issue Editors


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Guest Editor
Department of Civil & Environmental Engineering, Hanyang University, Ansan 15588, Republic of Korea
Interests: energy conversion and storage; solar cells; supercapacitors; water splitting

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Guest Editor
Department of Fiber System Engineering, Yeungnam University, 280 Dehak-Ro, Gyeongsan 38541, Republic of Korea
Interests: energy conversion and storage; HER and OER; sensing materials; multiferroic composites; sintering processes

Special Issue Information

Dear Colleagues,

Electrochemical supercapacitors have emerged as key components in the field of energy harvesting and storage, offering a promising solution to the ever-growing demand for efficient, high-power energy systems. Recent years have witnessed significant strides in the development of electrochemical supercapacitors, driven by advances in materials science, device design, and integration technologies. Researchers have explored innovative materials, such as graphene, carbon nanotubes, and metal oxides, to enhance energy storage capacity and conductivity. Novel architectures, including asymmetric and hybrid configurations, have been proposed to optimize the trade-off between energy density and power density. This collection serves as a platform for showcasing the latest breakthroughs in the realm of electrochemical supercapacitors, exploring their pivotal role in revolutionizing energy harvesting and storage technologies. We invite contributions from researchers, scholars, and industry experts exploring novel solutions across various disciplines, such as materials development, device design, and applications of supercapacitors for efficient energy management. This Special Issue aims to provide a comprehensive overview of the current state of the art, fostering collaboration and knowledge exchange in the pursuit of sustainable and high-performance energy solutions.

We look forward to your participation in this Special Issue.

Dr. Ganesh T. Chavan
Dr. Sagar Mane
Guest Editors

Manuscript Submission Information

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Keywords

  • electrochemical supercapacitors
  • metal oxides
  • metal sulfides
  • 2D nanomaterials
  • hybrid supercapacitors
  • battery-type supercapacitors

Published Papers (1 paper)

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Research

17 pages, 8035 KiB  
Article
Elevating Supercapacitor Performance of Co3O4-g-C3N4 Nanocomposites Fabricated via the Hydrothermal Method
by Manesh A. Yewale, Vineet Kumar, Aviraj M. Teli, Sonali A. Beknalkar, Umesh T. Nakate and Dong-Kil Shin
Micromachines 2024, 15(3), 414; https://doi.org/10.3390/mi15030414 - 20 Mar 2024
Viewed by 717
Abstract
The hydrothermal method has been utilized to synthesize graphitic carbon nitride (g-C3N4) polymers and cobalt oxide composites effectively. The weight percentage of g-C3N4 nanoparticles influenced the electrochemical performance of the Co3O4-g-C3 [...] Read more.
The hydrothermal method has been utilized to synthesize graphitic carbon nitride (g-C3N4) polymers and cobalt oxide composites effectively. The weight percentage of g-C3N4 nanoparticles influenced the electrochemical performance of the Co3O4-g-C3N4 composite. In an aqueous electrolyte, the Co3O4-g-C3N4 composite electrode, produced with 150 mg of g-C3N4 nanoparticles, revealed remarkable electrochemical performance. With an increase in the weight percentage of g-C3N4 nanoparticles, the capacitive contribution of the Co3O4-g-C3N4 composite electrode increased. The Co3O4-g-C3N4-150 mg composite electrode shows a specific capacitance of 198 F/g. The optimized electrode, activated carbon, and polyvinyl alcohol gel with potassium hydroxide were used to develop an asymmetric supercapacitor. At a current density of 5 mA/cm2, the asymmetric supercapacitor demonstrated exceptional energy storage capacity with remarkable energy density and power density. The device retained great capacity over 6k galvanostatic charge–discharge (GCD) cycles, with no rise in series resistance following cyclic stability. The columbic efficiency of the asymmetric supercapacitor was likewise high. Full article
(This article belongs to the Special Issue Electrochemical Supercapacitors for Energy Harvesting and Storage)
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