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Materials
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Next-Generation Nanomaterials for High-Performance Supercapacitors
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Next-Generation Nanomaterials for High-Performance Supercapacitors

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Energy Materials".

Deadline for manuscript submissions: 10 June 2026 | Viewed by 3492

Special Issue Editors

Prof. Dr. Péter Baumli

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Guest Editor
Institute of Physical Metallurgy, Metal Forming and Nanotechnology, University of Miskolc, 3515 Miskolc-Egyetemvaros, Hungary
Interests: supercapacitors; energy storage; electrochemical processes; nanocomposites; interfacial phenomena; nanostructured coatings; nanomaterial synthesis
Special Issues, Collections and Topics in MDPI journals
Dr. Máté Czagány

E-Mail Website
Guest Editor
Institute of Physical Metallurgy, Metal Forming and Nanotechnology, University of Miskolc, 3515 Miskolc-Egyetemvaros, Hungary
Interests: supercapacitors; energy storage; electrochemical measurements; PVD coatings; nano-multilayers; electrodeposition; electroless methods
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The transition toward a more sustainable energy future relies heavily on the development of advanced materials capable of delivering high performance, reliability, and scalability. This Special Issue, “Next-Generation Nanomaterials for High-Performance Supercapacitors”, focuses on cutting-edge material innovations that push the boundaries of energy storage efficiency and functionality. We invite contributions on the design, synthesis, characterization, and application of novel nanomaterials and nanostructures specifically tailored for supercapacitors, including but not limited to graphene-based architectures, MXenes, metal–organic frameworks, covalent organic frameworks, and hybrid nanocomposites.

This Issue seeks to showcase high-impact multidisciplinary research that bridges materials science, electrochemistry, and engineering, offering new solutions for next-generation energy storage systems. Original research articles, comprehensive reviews, and communications that contribute to the advancement of high-performance supercapacitive energy storage are welcome.

Prof. Dr. Péter Baumli
Dr. Máté Czagány
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 250 words) can be sent to the Editorial Office for assessment.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Materials is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • nanomaterials
  • supercapacitor
  • energy storage
  • smart energy
  • battery
  • hydrogen storage
  • hybrid system
  • catalytic system
  • nanostructures

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Published Papers (2 papers)

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Research

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14 pages, 11136 KB  
Article
The Effect of Hydrogen Gas and Water Vapor in Catalytic Chemical Vapor Deposition on the Structure of Vertically Aligned Carbon Nanotubes
by Lilla Nánai, Tamás Gyulavári, Zsejke-Réka Tóth, Zsuzsanna Pápa, Judit Budai, Daniel Koncz-Horvath and Klara Hernadi
Materials 2025, 18(23), 5309; https://doi.org/10.3390/ma18235309 - 25 Nov 2025
Viewed by 668
Abstract
Since the discovery of carbon nanotubes (CNTs), extensive and comprehensive research has been conducted in many areas of materials science. Due to their structural and chemical properties, they can be an important part of electronic devices and structural materials that surround us. In [...] Read more.
Since the discovery of carbon nanotubes (CNTs), extensive and comprehensive research has been conducted in many areas of materials science. Due to their structural and chemical properties, they can be an important part of electronic devices and structural materials that surround us. In this work, we focused on the preparation and basic analysis of vertically aligned CNTs. An aluminum oxide carrier layer and bimetallic iron–cobalt catalyst layers of different compositions were fabricated on the surface of a silicon substrate using a pulsed laser deposition method. Then, vertically aligned CNTs were grown using a catalytic chemical vapor deposition method based on the thermal decomposition of ethylene. During the experiments, the effect of water vapor and hydrogen gas was investigated on the structure of as-prepared carbon nanotubes. CNT forest samples were characterized by scanning electron microscopy and Raman spectroscopy. One of the most important findings of this research is that the presence of hydrogen gas in the CCVD system is essential, but high-quality vertically aligned CNTs can be produced on silicon substrates even without water vapor. Full article
(This article belongs to the Special Issue Next-Generation Nanomaterials for High-Performance Supercapacitors)
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Review

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27 pages, 7287 KB  
Review
Carbon-Based Electrodes for Supercapacitors, with a Focus on Carbon Nanotubes—A Brief Overview
by Lilla Nánai and Klara Hernadi
Materials 2025, 18(22), 5215; https://doi.org/10.3390/ma18225215 - 18 Nov 2025
Cited by 1 | Viewed by 2631
Abstract
Increased needs arising from efficient utilization of renewable energy sources and the emerging use of portable electronic devices have introduced new requirements and challenges, such as fast charging and discharging, high-speed energy delivery, longer lifetime, and recyclability. To meet these demands, the innovative [...] Read more.
Increased needs arising from efficient utilization of renewable energy sources and the emerging use of portable electronic devices have introduced new requirements and challenges, such as fast charging and discharging, high-speed energy delivery, longer lifetime, and recyclability. To meet these demands, the innovative use of supercapacitors is essential, as they can complement the batteries currently in use. One of the major disadvantages of supercapacitors is that their energy storage capacity (5–20 Wh/kg) is currently insufficient, compared to the capacity of batteries (~1000 Wh/kg). Supercapacitors have higher specific power (10 kW/kg) but lower specific energy density, which is another significant disadvantage compared to batteries. This has prompted researchers around the world to find innovative solutions to enhance the energy density of these materials. Carbon-based nanomaterials are one of the most widely used electrode materials for supercapacitors; therefore, the development of carbon-based nanomaterials plays crucial role in evolution of supercapacitors, due to their high electrical conductivity, large specific surface area, and excellent mechanical strength compared to conventional electrode materials graphite, copper, platinum, etc. Significant results have been reported in the scientific literature on novel carbon-based nanostructured materials such as carbon nanotubes, vertically aligned carbon nanotubes, graphene, activated carbon, or carbon nanoballs, which have a hierarchical pore structure, as well as hybrid systems combining these materials and the introduction of alternative electrolytes. This manuscript reviews briefly the background and fundamental characteristics of supercapacitors, classifying them. It also mentions the general electrochemical measurement methods used to evaluate the energy storage properties of supercapacitors, with emphasis on their specific characteristics and limitations. The integral components of supercapacitors, especially electrode materials, are considered to have considerable impact on the performance of supercapacitor devices (e.g., long life cycle, storage capacity, and high power density). Full article
(This article belongs to the Special Issue Next-Generation Nanomaterials for High-Performance Supercapacitors)
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