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Crystals
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Supercapacitor and Related Materials
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Supercapacitor and Related Materials

A special issue of Crystals (ISSN 2073-4352). This special issue belongs to the section "Materials for Energy Applications".

Deadline for manuscript submissions: closed (30 June 2023) | Viewed by 4777

Special Issue Editor

Dr. Liangzhu Zhang

E-Mail Website
Guest Editor
State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, China
Interests: energy storage; micro-supercapacitors; two-dimensional materials

Special Issue Information

Dear Colleagues,

The rapid development of human society triggers urgent needs for green and sustainable energy, as well as new technologies in energy storage and conversion. Supercapacitors store energy via electrolyte ions adsorption or fast surface redox reactions, enabling ultrafast charging/discharging, long lifecycle, and bridging the energy gap between traditional dielectric capacitors and batteries. Nanomaterials offer greatly improved ionic transport and electronic conductivity, which is essential to the electrochemical performances of supercapacitors. Advanced nanomaterials such as carbon-based nanomaterials, graphene, MXene, transition metal chacogenides, metal oxides, conducting polymers, metal–organic frameworks, and covalent organic frameworks have been developed for high-performance supercapacitors. Additionally, prominent progress in supercapacitors has been achieved, specifically in rational design high-voltage window electrolyte, device fabrication methods, and charge storage mechanisms.

To promote and advance the development of supercapacitors from scientific research to industry applications, as well as strengthen academic society connection, we are launching this Special Issue on "Supercapacitors and Related Materials". Original research papers, reviews, and perspectives related to the scope of the section are warmly welcomed.

Dr. Liangzhu Zhang
Guest Editor

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. Crystals 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 2100 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

  • electrochemical capacitors
  • pseudocapacitors
  • hybrid supercapacitors
  • micro-supercapacitors
  • energy density
  • power density
  • graphene
  • MXene
  • transition metal chalcogenides
  • metal oxides
  • electrolyte
  • energy storage
  • flexible electronics
  • device fabrication methods
  • charge storage mechanism

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Published Papers (2 papers)

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Research

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11 pages, 3685 KiB  
Article
Vacuum-Filtration-Assisted Ice-Templated Freeze Drying for Preparing Capacitive Graphene Aerogel for Thermal Management
by Yuze Xing, Hui Jia, Zhefan Wang, Lijing Xie, Dong Liu, Zheng Wang, Meng Li and Qingqiang Kong
Crystals 2023, 13(3), 458; https://doi.org/10.3390/cryst13030458 - 7 Mar 2023
Cited by 2 | Viewed by 1700
Abstract
Graphene aerogel (GA) is widely used in electronic devices owing to its light weight, elasticity, and excellent thermal conductivity. GA has been prepared using various methods. However, the preparation process is complex and the thickness is hard to control, which limits its application. [...] Read more.
Graphene aerogel (GA) is widely used in electronic devices owing to its light weight, elasticity, and excellent thermal conductivity. GA has been prepared using various methods. However, the preparation process is complex and the thickness is hard to control, which limits its application. There is an urgent need for a new and simple method to fabricate graphene aerogel. Herein, we describe a novel strategy for fabricating GA via a vacuum filtration–ice template freeze-drying method. The stability of graphene oxide slurry (GOS) was changed by using hydrochloric acid (HCl, 0.12 mol/L), and then GA was quickly obtained by vacuum filtration–ice template freeze drying and graphitization. The obtained GA reveals a symmetrical hyperbolic structure in the vertical direction, giving it excellent thermal and electrical conductivity and good compression performance. The electrical conductivity is up to 14.87 S/cm and the thermal conductivity is 1.29 W m−1 K−1 when the density is 36 mg cm−3. The pressure only needs 0.013 MPa when the strain of GA is 50%. GA has considerable potential for the application of supercapacitors owing to the high conductivity and low density. Full article
(This article belongs to the Special Issue Supercapacitor and Related Materials)
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Review

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18 pages, 5825 KiB  
Review
Research Progress on Metal–Organic Framework-Based Electrode Materials for Supercapacitors
by Yin Zhu, Peng Su, Jiemin Wang and Xu Wang
Crystals 2023, 13(11), 1593; https://doi.org/10.3390/cryst13111593 - 17 Nov 2023
Cited by 5 | Viewed by 2740
Abstract
Supercapacitors play an important role in power systems since they are a key part of electrochemical energy storage devices. To assemble high-performance supercapacitors, it is crucial to discover and innovate high-capacitive electrode materials. Recently, metal–organic frameworks (MOFs) and their derivatives have received wide [...] Read more.
Supercapacitors play an important role in power systems since they are a key part of electrochemical energy storage devices. To assemble high-performance supercapacitors, it is crucial to discover and innovate high-capacitive electrode materials. Recently, metal–organic frameworks (MOFs) and their derivatives have received wide concerns as electrode materials for supercapacitors, not only because of their high pore volume and large surface area for ions and electrons insertion and transportation, but also due to the intrinsic metal active sites that possibly offer extra faradaic pseudocapacitance. Additionally, the abundant species of MOFs with various morphologies also feature advantages in enriching the structural diversity of electrodes. In this paper, we first report the latest research progress and demonstrate the feasibility of pure MOFs for directly constructing supercapacitor electrodes. Furthermore, different MOF derivatives, including porous carbons, transition metal oxides, metal hydroxides and MOF composites for supercapacitors, are summarized, and their electrochemical performances with corresponding energy storage mechanisms are presented in detail. Finally, the perspectives for MOF-based materials applied in supercapacitors are discussed, aiming to provide a guideline for further research based on these promising materials. Full article
(This article belongs to the Special Issue Supercapacitor and Related Materials)
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