High Energy Density Supercapacitors: Acquisition, Characterization, and Application: 2nd Edition

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

Deadline for manuscript submissions: 20 January 2026 | Viewed by 186

Special Issue Editors


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Guest Editor
National Institute for Research and Development in Electrochemistry and Condensed Matter, Dr. A. P. Podeanu 144, 300569 Timisoara, Romania
Interests: supercapacitors; electrodes; flexible supercapacitor electrode materials; nanomaterial synthesis; composite structures; physical chemistry characterization
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Special Issue Information

Dear Colleagues,

The aim of this Special Issue is to publish high-quality research papers addressing the current and future advances in the development, characterization and application of supercapacitors.

Over the past two decades, the market for electronic and electric mobile vehicles and portable electronic devices has constantly developed and the demand for cost-effective and highly efficient energy storage devices has stimulated research into high-density electrochemical energy storage technologies that can deliver large amounts of power for long periods of time.

Supercapacitors are materials that exhibit high power densities but low energy densities; thus, to further improve the energy densities of supercapacitors, it is important to design and synthesize new electrode materials. Also, in ideal energy storage systems, long-term stability and energy/power characteristics are crucial.

In particular, topics of interest for this Special Issue include, but are not limited to:

  • Methodologies for improving the energy density of supercapacitors, such as doping the active electrode with pseudocapacitive materials; transition metal oxides/rare earths or doping with electronically conducting polymers; the manufacture of three-dimensional (3-D) structures; the use of active carbon electrodes with a large surface; and the modification of the functional groups on the surfaces of electrodes, etc.
  • Obtaining and characterizing supercapacitors and applying their special properties by integrating them into wearable or implantable biomedical devices, rechargeable sensors, military applications, automobiles, emerging technologies, etc.

Dr. Carmen Lǎzǎu
Dr. Cornelia Bandas
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. Batteries is an international peer-reviewed open access monthly 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 2700 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

  • supercapacitors
  • electrodes
  • pseudocapacitive materials
  • carbon electrodes
  • rechargeable sensors

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Published Papers (1 paper)

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Review

42 pages, 1635 KB  
Review
Photoresponsive TiO2/Graphene Hybrid Electrodes for Dual-Function Supercapacitors with Integrated Environmental Sensing Capabilities
by María C. Cotto, José Ducongé, Francisco Díaz, Iro García, Carlos Neira, Carmen Morant and Francisco Márquez
Batteries 2025, 11(12), 460; https://doi.org/10.3390/batteries11120460 - 15 Dec 2025
Abstract
This review critically examines photoresponsive supercapacitors based on TiO2/graphene hybrids, with a particular focus on their emerging dual role as energy-storage devices and environmental sensors. We first provide a concise overview of the electronic structure of TiO2 and the key [...] Read more.
This review critically examines photoresponsive supercapacitors based on TiO2/graphene hybrids, with a particular focus on their emerging dual role as energy-storage devices and environmental sensors. We first provide a concise overview of the electronic structure of TiO2 and the key attributes of graphene and related nanocarbons that enable efficient charge separation, transport, and interfacial engineering. We then summarize and compare reported device architectures and electrode designs, highlighting how morphology, graphene integration strategies, and illumination conditions govern specific capacitance, cycling stability, rate capability, and light-induced enhancement in performance. Particular attention is given to the underlying mechanisms of photo-induced capacitance enhancement—including photocarrier generation, interfacial polarization, and photodoping—and to how these processes can be exploited to embed sensing functionality in working supercapacitors. We review representative studies in which TiO2/graphene systems operate as capacitive sensors for humidity, gases, and volatile organic compounds, emphasizing quantitative figures of merit such as sensitivity, response/recovery times, and stability under repeated cycling. Finally, we outline current challenges in materials integration, device reliability, and benchmarking, and propose future research directions toward scalable, multifunctional TiO2/graphene platforms for self-powered and environmentally aware electronics. This work is intended as a state-of-the-art summary and critical guide for researchers developing next-generation photoresponsive supercapacitors with integrated sensing capability. Full article
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