High-Performance Supercapacitors: Preparation and Application—2nd Edition

A special issue of Batteries (ISSN 2313-0105). This special issue belongs to the section "Supercapacitors".

Deadline for manuscript submissions: 15 January 2026 | Viewed by 667

Special Issue Editor


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Guest Editor
Key Laboratory for Ultrafine Materials of Ministry of Education, and Shanghai Key Laboratory of Advanced Polymeric Materials, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
Interests: research and development of new nanomaterials using advanced microscope technology; new energy materials; new nanomaterials and devices
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Special Issue Information

Dear Colleagues,

This Special Issue on high-performance supercapacitors is focused on new supercapacitor technologies. Climate change is now a global concern, and new energy materials and devices are being extensively studied to reduce greenhouse gas emissions and help solve climate change. Supercapacitor materials and devices are very promising due to their quick charge/discharge capabilities and long cycling lifetimes. However, what is the problem with the technology, and how can we broaden its applications?

The success of the supercapacitor technology largely depends on the improvement of its critical properties, such as the energy storage capabilities of the supercapacitor materials and devices.

In order to improve supercapacitor technology, research has been conducted to improve the energy storage capabilities of electrodes, which determine the specific capacitance of the material. Additionally, people are also working to enhance these supercapacitor devices via modeling and system development studies. Therefore, what is the current status of the field, and what can we expect in the future?

This Special Issue discusses the current status and future trend of supercapacitor material and device development, which are important to enhance their performances.

Potential topics include, but are not limited to, the following:

  • Novel supercapacitor materials, positive electrodes, negative electrodes, and electrolytes;
  • Electrode designs;
  • Supercapacitor device designs;
  • Electrochemical test methods;
  • Modeling;
  • Supercapacitor system studies.

Prof. Dr. Xin Chen
Guest Editor

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Keywords

  • supercapacitor
  • flexible supercapacitor
  • hybrid supercapacitor
  • oxide
  • hydroxide
  • chalcogenide
  • activated carbon
  • carbon nanotube
  • graphene
  • MXene
  • quantum dot
  • 3D electrode
  • composite electrode
  • interface
  • modeling
  • system

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Related Special Issue

Published Papers (2 papers)

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Research

28 pages, 1374 KiB  
Article
A Circuital Equivalent for Supercapacitors Accurate Simulation in Power Electronics Systems
by Catalina Rus-Casas, Carlos Andrés Ramos-Paja, Sergio Ignacio Serna-Garcés, Carlos Gilabert-Torres and Juan Domingo Aguilar-Peña
Batteries 2025, 11(8), 307; https://doi.org/10.3390/batteries11080307 - 9 Aug 2025
Viewed by 198
Abstract
The effective integration of energy storage systems is paramount for the widespread deployment of renewable energy technologies. Selection of a specific storage system is typically dictated by the primary challenge it aims to mitigate, such as intermittency, grid stability, or power quality. The [...] Read more.
The effective integration of energy storage systems is paramount for the widespread deployment of renewable energy technologies. Selection of a specific storage system is typically dictated by the primary challenge it aims to mitigate, such as intermittency, grid stability, or power quality. The optimization of overall system efficiency and longevity is increasingly achieved through hybrid storage systems that integrate supercapacitors into their designs. This research introduces a novel circuital equivalent for a commercial supercapacitor, optimized for precise simulations within the frequency range of power electronics applications. A key distinction of this circuital equivalent lies in its rigorous foundation: its comprehensive characterization across a broad frequency spectrum, specifically from 0.01 Hz to 300 kHz, employing a commercial frequency response analyzer. This precise circuital representation offers substantial utility in simulation, analysis, and design of high-frequency circuits, particularly for switched-power converter design and control. It enables the anticipation of undesirable phenomena, such as significant voltage ripple and operational instability. This predictive capability is crucial for experimental preparation, facilitating the proactive integration of necessary filters and protective measures within sensing circuits, thereby underscoring its value prior to physical implementation. In addition, the developed circuital equivalent exhibits broad compatibility, allowing seamless implementation within commercial circuit simulators. Finally, the proposed methodology was illustrated with a commercial supercapacitor, but it can be applied to other supercapacitor types or manufacturers. Full article
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16 pages, 4770 KiB  
Article
Developing a CeS2/ZnS Quantum Dot Composite Nanomaterial as a High-Performance Cathode Material for Supercapacitor
by Shan-Diao Xu, Li-Cheng Wu, Muhammad Adil, Lin-Feng Sheng, Zi-Yue Zhao, Kui Xu and Xin Chen
Batteries 2025, 11(8), 289; https://doi.org/10.3390/batteries11080289 - 1 Aug 2025
Viewed by 301
Abstract
To develop high-performance electrode materials for supercapacitors, in this paper, a heterostructured composite material of cerium sulfide and zinc sulfide quantum dots (CeS2/ZnS QD) was successfully prepared by hydrothermal method. Characterization through scanning electron microscopy (SEM), X-ray diffraction (XRD), and transmission [...] Read more.
To develop high-performance electrode materials for supercapacitors, in this paper, a heterostructured composite material of cerium sulfide and zinc sulfide quantum dots (CeS2/ZnS QD) was successfully prepared by hydrothermal method. Characterization through scanning electron microscopy (SEM), X-ray diffraction (XRD), and transmission electron microscopy (TEM) showed that ZnS QD nanoparticles were uniformly composited with CeS2, effectively increasing the active sites surface area and shortening the ion diffusion path. Electrochemical tests show that the specific capacitance of this composite material reaches 2054 F/g at a current density of 1 A/g (specific capacity of about 256 mAh/g), significantly outperforming the specific capacitance of pure CeS2 787 F/g at 1 A/g (specific capacity 98 mAh/g). The asymmetric supercapacitor (ASC) assembled with CeS2/ZnS QD and activated carbon (AC) retained 84% capacitance after 10,000 charge–discharge cycles. Benefited from the synergistic effect between CeS2 and ZnS QDs, the significantly improved electrochemical performance of the composite material suggests a promising strategy for designing rare-earth and QD-based advanced energy storage materials. Full article
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