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Next Generation of Supercapacitors: New Materials and Novel Devices

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A special issue of Materials (ISSN 1996-1944).

Deadline for manuscript submissions: closed (31 March 2019) | Viewed by 38274

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Special Issue Editors

Prof. Dr. Jung Ho Kim

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Guest Editor

Australian Institute for Innovative Materials, University of Wollongong, North Wollongong, NSW 2500, Australia
Interests: Li-ion battery; supercapacitor; porous materials; nanoarchitectures

Prof. Dr. Yusuke Yamauchi

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Guest Editor

Professor / School of Chem Eng
Senior Group Leader/ Australian Institute for Bioengineering and Nanotechnology (AIBN) The University of Queensland, Brisbane, Australia
Interests: inorganic chemistry; materials chemistry
Special Issues, Collections and Topics in MDPI journals

Dr. Md. Shahriar A. Hossain

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Guest Editor

Senior Lecturer / School of Mechanical and Mining Engineering Senior Research Fellow / Australian Institute for Bioengineering and Nanotechnology (AIBN), The University of Queensland, Brisbane, QLD 4072, Australia
Interests: electronic and magnetic properties of magnetic and superconducting materials; microstructure morphology; superparamagnetism and application
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Even if Lithium-ion batteries for consumer electronics have made substantial advances, supercapacitors also possess very attractive properties, such as higher power density, short charging time, and long cycle life over repeated cycles, which make them promising candidates for practical applications. Still, researchers in the field of energy storage are focused on improving the energy density of these devices, along with their power density, which will kick-start new innovations in flexible and lightweight electronics. Building on this background, this Special Issue of Materials will be devoted to research perspectives and reports on recent advances in the development of various supercapacitors, including representative electric double-later supercapacitors (EDLC), pseudocapacitors, and hybrid supercapacitors.

It is a great honor for us to have this opportunity to join Materials as Guest Editors. We would like to strongly encourage all researchers to submit their research works to support this Special Issue.

Prof. Jung Ho Kim
Prof. Dr. Yusuke Yamauchi
Dr. Md. Shahriar A. Hossain
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

Nanoarchitectures
Highly porous materials
Organic electrolytes
Hybird supercapacitors

Published Papers (5 papers)

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Research

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7 pages, 2684 KiB

Open AccessArticle

Green Synthesis of Boron Carbonitride with High Capacitance

by Dongping Chen, Yanzhen Huang, Xinling Hu, Rongkai Li, Yingjiang Qian and Dongxu Li

Materials 2018, 11(3), 387; https://doi.org/10.3390/ma11030387 - 06 Mar 2018

Cited by 13 | Viewed by 8723

Abstract

Boron carbonitrides (BCN) have attracted great interest in superhard or energy storage materials. In this work, thin BCN sheets were synthesized at 250 °C by a facile and green solvothermal method. The structure and morphology were characterized by X-ray diffraction (XRD), Raman spectroscopy, X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). Based on the results of electrochemical experiments, the thin BCN sheet exhibited excellent capacitance performance (343.1 F/g at a current density of 0.5 A/g) and cycling stability (90%), which showed high potential applications in supercapacitors. Full article

(This article belongs to the Special Issue Next Generation of Supercapacitors: New Materials and Novel Devices)

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Review

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27 pages, 3988 KiB

Open AccessReview

Recent Progress on Graphene/Polyaniline Composites for High-performance Supercapacitors

by Xiaodong Hong, Jiawei Fu, Yue Liu, Shanggong Li, Xiaoliang Wang, Wei Dong and Shaobin Yang

Materials 2019, 12(9), 1451; https://doi.org/10.3390/ma12091451 - 05 May 2019

Cited by 42 | Viewed by 5899

Abstract

Electrode materials are crucial for the electrochemical performance of supercapacitors. In view of the high specific surface area, high conductivity of graphene nanosheets and the high pseudocapacitance of polyaniline (PANI), the combination of graphene with PANI has become a research hotspot. In this work, we summarize the recent advance on the synthesis of PANI and graphene/PANI composites, and their application in supercapacitors. The synthesis of PANI is the basis of preparing graphene/PANI composites, so we first introduce the synthesis methods of PANI. Then, the advances of two dimensional (2D) and three dimensional (3D) graphene/PANI composites are summarized according to the inherent feature of graphene. The 2D composites of pristine graphene and functionalized graphene with PANI are introduced separately; furthermore, the 3D composites are classified into three sections, including flexible graphene/PANI composites, graphene framework based composites, and printable graphene/PANI composites. At last, aiming at solving the current challenges of graphene/PANI composites, we put forward some strategies for preparing high performance graphene/PANI composite electrodes. Full article

(This article belongs to the Special Issue Next Generation of Supercapacitors: New Materials and Novel Devices)

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21 pages, 2962 KiB

Open AccessReview

Graphene-Based Inks for Printing of Planar Micro-Supercapacitors: A Review

by Tuan Sang Tran, Naba Kumar Dutta and Namita Roy Choudhury

Materials 2019, 12(6), 978; https://doi.org/10.3390/ma12060978 - 25 Mar 2019

Cited by 38 | Viewed by 6365

Abstract

Micro-supercapacitors have recently emerged as promising microscale power sources for portable and wearable microelectronics. However, most reported planar micro-supercapacitors suffer from low energy density and the complexity of fabrication, which calls for their further development. In recent years, the fortification of graphene has enabled the dramatic improvement of planar micro-supercapacitors by taking full advantage of in-plane interdigital architecture and the unique features of graphene. The development of viable printing technologies has also provided better means for manufacturing, bringing micro-supercapacitors closer to practical applications. This review summarizes the latest advances in graphene-based planar micro-supercapacitors, with specific emphasis placed on formulation of graphene-based inks and their fabrication routes onto interdigital electrodes. Prospects and challenges in this field are also discussed towards the realization of graphene-based planar micro-supercapacitors in the world of microelectronics. Full article

(This article belongs to the Special Issue Next Generation of Supercapacitors: New Materials and Novel Devices)

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30 pages, 9450 KiB

Open AccessReview

A Review of Supercapacitors Based on Graphene and Redox-Active Organic Materials

by Qi Li, Michael Horn, Yinong Wang, Jennifer MacLeod, Nunzio Motta and Jinzhang Liu

Materials 2019, 12(5), 703; https://doi.org/10.3390/ma12050703 - 27 Feb 2019

Cited by 85 | Viewed by 8144

Abstract

Supercapacitors are a highly promising class of energy storage devices due to their high power density and long life cycle. Conducting polymers (CPs) and organic molecules are potential candidates for improving supercapacitor electrodes due to their low cost, large specific pseudocapacitance and facile synthesis methods. Graphene, with its unique two-dimensional structure, shows high electrical conductivity, large specific surface area and outstanding mechanical properties, which makes it an excellent material for lithium ion batteries, fuel cells and supercapacitors. The combination of CPs and graphene as electrode material is expected to boost the properties of supercapacitors. In this review, we summarize recent reports on three different CP/graphene composites as electrode materials for supercapacitors, discussing synthesis and electrochemical performance. Novel flexible and wearable devices based on CP/graphene composites are introduced and discussed, with an eye to recent developments and challenges for future research directions. Full article

(This article belongs to the Special Issue Next Generation of Supercapacitors: New Materials and Novel Devices)

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15 pages, 1481 KiB

Open AccessFeature PaperReview

Ni(OH)₂ and NiO Based Composites: Battery Type Electrode Materials for Hybrid Supercapacitor Devices

by Anne-Lise Brisse, Philippe Stevens, Gwenaëlle Toussaint, Olivier Crosnier and Thierry Brousse

Materials 2018, 11(7), 1178; https://doi.org/10.3390/ma11071178 - 10 Jul 2018

Cited by 102 | Viewed by 8339

Abstract

Nanocomposites of Ni(OH)₂ or NiO have successfully been used in electrodes in the last five years, but they have been falsely presented as pseudocapacitive electrodes for electrochemical capacitors and hybrid devices. Indeed, these nickel oxide or hydroxide electrodes are pure battery-type electrodes which store charges through faradaic processes as can be shown by cyclic voltammograms or constant current galvanostatic charge/discharge plots. Despite this misunderstanding, such electrodes can be of interest as positive electrodes in hybrid supercapacitors operating under KOH electrolyte, together with an activated carbon-negative electrode. This study indicates the requirements for the implementation of Ni(OH)₂-based electrodes in hybrid designs and the improvements that are necessary in order to increase the energy and power densities of such devices. Mass loading is the key parameter which must be above 10 mg·cm⁻² to correctly evaluate the performance of Ni(OH)₂ or NiO-based nanocomposite electrodes and provide gravimetric capacity values. With such loadings, rate capability, capacity, cycling ability, energy and power densities can be accurately evaluated. Among the 80 papers analyzed in this study, there are indications that such nanocomposite electrode can successfully improve the performance of standard Ni(OH)₂ (+)//6 M KOH//activated carbon (−) hybrid supercapacitor. Full article

(This article belongs to the Special Issue Next Generation of Supercapacitors: New Materials and Novel Devices)

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