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New-Generation Advanced Materials for Next-Generation Supercapacitors

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

Deadline for manuscript submissions: closed (10 June 2023) | Viewed by 2509

Special Issue Editors

School of Materials Science and Engineering, Yeungnam University, Gyeongsan 38541, Gyeongbuk, Korea
Interests: energy materials; photo-electrocatalysis materials, advanced nanofunctional materials; nanomaterial physics; MXenes (all 2D materials); unique carbon nanostructures (all carbon allotropes); clean energy conversion; storage; photoelectrochemical water splitting; hydrogen fuel
Special Issues, Collections and Topics in MDPI journals
Department of Mechanical Engineering, Siksha 'O' Anusandhan (Deemed to be University), Bhubaneswar, Odisha 751030, India
Interests: nanomaterials for energy storage; solar cells

Special Issue Information

Dear Colleagues,

Energy plays a significant role in human development. Energy demand consumption is increasing exponentially daily; hence, environmentally friendly and efficient energy storage devices are needed. In this regard, electrochemical energy storage systems such as the battery, supercapacitors, etc., have gained much attention because of their environmentally friendly nature. The supercapacitor is one of the most helpful technologies due to its extraordinary features, high power, long cycle life, low maintenance, and simple geometry. A supercapacitor's device performance and durability are governed by the selected electrodes' physical, chemical, and electrical properties. In this perspective, many materials such as carbon, metal oxides, and polymers and their combination have been utilized as electrodes in supercapacitors. Remarkably, the clubbing of some of the latest advanced nanomaterials, e.g., MXene, LDH/MOF/COF, novel carbon nanostructures, carbon nano-onions (CNO), and graphene nanoplatelets (GNP), could be the game changer for the advanced supercapacitor applications. Activated carbon (AC), with a high surface area and moderate electrical conductivity, is the electrode material primarily used for commercial supercapacitors. Despite the high surface area, AC carbon cannot store the required amount of charge. It is desirable to combine AC with advanced layered materials such as LDH, MXenes, MOF/COF, or GNPs to achieve a balance in energy and power density.

This Materials MDPI Special Issue provides an excellent opportunity to explore the unexplored advanced functional nanomaterials' properties/applications for advanced next-generation supercapacitors. We, as the Editors, are inviting materials scientists, physicists, chemists, chemical engineers, and electrochemists to come forward and contribute to the challenges and undiscovered potentiality of all the above-discussed 2D nanomaterials, oxides/sulfide/phosphides, MOF/COF, LDH, MXene, CNO, GNP, and all other carbon nanostructures for next-generation supercapacitor investigations. You are welcome to submit your original research or review articles on topics including, but not limited to, the ones below, as long as they regard novel materials and applications.

Dr. Debananda Mohapatra
Dr. Ankur Soam
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 100 words) can be sent to the Editorial Office for announcement on this website.

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

  • MXene (all 2D materials) applications
  • LDH and MOF/COF advanced nanostructures
  • all carbon nanostructures
  • mono/bi/ternary metal oxides/sulfides/phosphides
  • nano functional materials
  • advanced nanocomposite electrodes
  • next-generation supercapacitors
  • electric double-layer capacitors (EDLCs)
  • pseudocapacitors
  • hybrid and lithium-ion capacitors
  • flow supercapacitor
  • supercapacitor modeling and simulation
  • electrolyte engineering

Published Papers (1 paper)

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Research

21 pages, 5853 KiB  
Article
Physicochemical Modeling of Electrochemical Impedance in Solid-State Supercapacitors
by Davood Peyrow Hedayati, Gita Singh, Michael Kucher, Tony D. Keene and Robert Böhm
Materials 2023, 16(3), 1232; https://doi.org/10.3390/ma16031232 - 31 Jan 2023
Cited by 2 | Viewed by 2199
Abstract
Solid-state supercapacitors (SSCs) consist of porous carbon electrodes and gel-polymer electrolytes and are used in novel energy storage applications. The current study aims to simulate the impedance of SSCs using a clearly defined equivalent circuit (EC) model with the ultimate goal of improving [...] Read more.
Solid-state supercapacitors (SSCs) consist of porous carbon electrodes and gel-polymer electrolytes and are used in novel energy storage applications. The current study aims to simulate the impedance of SSCs using a clearly defined equivalent circuit (EC) model with the ultimate goal of improving their performance. To this end, a conventional mathematical and a physicochemical model were adapted. The impedance was measured by electrochemical impedance spectroscopy (EIS). An EC consisting of electrical elements was introduced for each modeling approach. The mathematical model was purely based on a best-fit method and utilized an EC with intuitive elements. In contrast, the physicochemical model was motivated by advanced theories and allowed meaningful associations with properties at the electrode, the electrolyte, and their interface. The physicochemical model showed a higher approximation ability (relative error of 3.7%) due to the interface impedance integration in a more complex circuit design. However, this model required more modeling and optimization effort. Moreover, the fitted parameters differed from the analytically calculated ones due to uncertainties in the SSC’s microscale configuration, which need further investigations. Nevertheless, the results show that the proposed physicochemical model is promising in simulating EIS data of SSCs with the additional advantage of utilizing well-reasoned property-based EC elements. Full article
(This article belongs to the Special Issue New-Generation Advanced Materials for Next-Generation Supercapacitors)
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