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Latest Advances and Prospects of High-Performance Supercapacitors

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A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "D2: Electrochem: Batteries, Fuel Cells, Capacitors".

Deadline for manuscript submissions: closed (17 March 2023) | Viewed by 10957

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Special Issue Editors

Dr. Sumanta Sahoo

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Guest Editor

School of Chemical Engineering, Yeungnam University, Gyeongsan, Republic of Korea
Interests: supercapacitors; graphene; MXenes; energy storage; mixed metal oxides
Special Issues, Collections and Topics in MDPI journals

Dr. Santosh K. Tiwari

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Guest Editor

1. Department of Chemistry, University of Warsaw, Warsaw, Poland
2. Key Laboratory of New Processing Technology for Nonferrous Metals and Materials, Ministry of Education, School of Resources, Environment and Materials, Guangxi University, Nanning, China
Interests: new materials;2D materials;mechanical properties;self healing materials;energy materials

Special Issue Information

Dear Colleagues,

With rapid progress in modern technology, the demand for energy storage devices is increasing day by day. For most of the renewal energy sources, storage of energy for a required time is a big challenge even after the availability of sources. Supercapacitors have been considered as one of the most evolving and efficient technologies amongst many energy storage strategies. The supercapacitors have the ability to store electrical charge in an electric double layer at the interface of electrode and electrolyte. The SCs global market was estimated at $1.5 billion in 2017, and their demand is uninterruptedly increasing, which will be doubled over the coming years. Over the past few years, many special types of electrode materials have been introduced to fabricate high-performance supercapacitors with high energy density, enhanced cycling stability, and improved capacitance. Different synthetic approaches have been developed to fabricate diverse types of supercapacitors like flexible, wearable, hybrid-types supercapacitors, micro-supercapacitors etc. It is expected that these supercapacitor devices will play an important role in the electronics world in near future.

This open-access special issue will bring together original research, mini-review, research prospect and comprehensive state-of-the-art articles on the latest innovations in supercapacitor technologies. This special issue highlights novel synthetic strategies, innovative electrode materials, and distinctive device fabrication techniques for supercapacitor applications. The key feature of this special issue is to deliver the latest cutting-edge innovations in supercapacitor technologies. We invite all the researchers to submit their work related to the synthesis strategies and fabrication techniques of supercapacitors.

Research areas of this special issue comprise, but are not restricted to:

Electrode materials
Latest 2D materials
Hybrid nanomaterials
Electrochemical behavior of nanomaterials
Energy materials
Advanced synthetic approaches
Biomass-derived carbon nanomaterials
Microporous and mesoporous materials
Nano carbons (Graphene, Graphene Oxide, CNTs, Nanoionics, Fullerenes etc.)

Dr. Sumanta Sahoo
Dr. Santosh K. Tiwari
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. Energies 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

carbon nanomaterials
mx phase materials
microsupercapacitor
pseudocapacitive and battery-type materials
supercapattery
flexible and wearable supercapacitor
asymmetric supercapacitor devices
mixed metal oxides
metal chalcogenides
binder-free supercapacitor electrodes
hybrid supercapacitor

Published Papers (3 papers)

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Research

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18 pages, 3080 KiB

Open AccessArticle

Effect of Oxygen Vacancy on the Crystallinity and Optical Band Gap in Tin Oxide Thin Film

by Rajesh Dangi, Bijaya Basnet, Manoj Pandey, Sandip Bhusal, Biplab Budhathoki, Kshama Parajuli, Santosh K. Tiwari and Bhim P. Kafle

Energies 2023, 16(6), 2653; https://doi.org/10.3390/en16062653 - 11 Mar 2023

Cited by 9 | Viewed by 2959

Abstract

Herein, we have prepared tin oxide (SnO₂) nanoparticles (NPs), through a co-precipitation method, using SnCl₂

\cdot

2H₂O dissolved in distilled water (DW) as a precursor. Then, the prepared NPs were heat treated in a muffle furnace, as a [...] Read more.

Herein, we have prepared tin oxide (SnO₂) nanoparticles (NPs), through a co-precipitation method, using SnCl₂

\cdot

2H₂O dissolved in distilled water (DW) as a precursor. Then, the prepared NPs were heat treated in a muffle furnace, as a function of temperature, under an open atmosphere. The prepared SnO₂ NPs were then re-dispersed in DW, followed by spray casting on a glass substrate, for preparing SnO₂ thin films. The average thickness of the fabricated SnO₂ thin films was 2.76 µm. We demonstrated a very clear variation in the structural, compositional, and morphological features of the different films (in particular, variation of the density of oxygen vacancies), which altered their electrical and optical properties. Raising the calcination temperature of the SnO₂ thin films, from 250 °C to 650 °C, led to a monotonic reduction in the crystallite size, from 10.4 nm to 6.7 nm, and a decrease in the O/Sn ratio, from 5.60 to 4.79. A 14.5% decrease in the O/Sn ratio resulted in a decrease in the crystallite size by 3.7 nm (i.e., a 35.3% decrease in the NP size), and a decrease in the band gap of 0.11 eV. The lowering of the band gap, along with an increase in the oxygen vacancies in the films, accords well with previous studies. Besides, as the calcination temperature was raised, the refractive index and absorption coefficient values were also found to notably increase. Very interestingly, by simply altering the calcination temperature, we were able to produce SnO₂ thin films with optical band gaps nearly equal to the fundamental band gap (2.96 eV), even though many earlier experimental studies had reported considerably greater values (3.36–4.24 eV). SnO₂ thin films with lower oxygen vacancies exhibited relatively higher band gaps, which is likely to be favorable for the desired electron transport layer in perovskite solar cells. Full article

(This article belongs to the Special Issue Latest Advances and Prospects of High-Performance Supercapacitors)

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Review

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15 pages, 3570 KiB

Open AccessReview

Modern Supercapacitors Technologies and Their Applicability in Mature Electrical Engineering Applications

by Kasun Subasinghage, Kosala Gunawardane, Nisitha Padmawansa, Nihal Kularatna and Mehdi Moradian

Energies 2022, 15(20), 7752; https://doi.org/10.3390/en15207752 - 20 Oct 2022

Cited by 18 | Viewed by 2872

Abstract

Supercapacitors can store a million times more energy per unit mass or volume compared to electrolytic capacitors. Due to their low internal resistance, they are capable of driving or absorbing pulsative high currents. Over the last quarter, century supercapacitor (SC) manufacturers have developed several families of mass-scale devices with high-power density and a longer cycle life that helped the end-users to improve their energy storage systems and products. Today, there are three common device families, namely, (i) symmetrical double-layer capacitors (EDLCs), (ii) hybrid capacitors with a lithium electrode, and (iii) battery capacitors based on pseudo capacitance concepts. This review paper compares these families and provides an overview of several state-of-the-art applications in electric vehicles (EVs), microgrids, and consumer electronics. Full article

(This article belongs to the Special Issue Latest Advances and Prospects of High-Performance Supercapacitors)

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20 pages, 1852 KiB

Open AccessReview

Banana Peel and Conductive Polymers-Based Flexible Supercapacitors for Energy Harvesting and Storage

by Melkie Getnet Tadesse, Esubalew Kasaw, Biruk Fentahun, Emil Loghin and Jörn Felix Lübben

Energies 2022, 15(7), 2471; https://doi.org/10.3390/en15072471 - 28 Mar 2022

Cited by 14 | Viewed by 4107

Abstract

Flexible supercapacitors are highly demanding due to their wearability, washability, lightweight property and rollability. In this paper, a comprehensive review on flexible supercapacitors based on conductive polymers such as polypyrrole (PPy), polyaniline (PANI) and poly(3,4-ethylenedioxtthiophne)-polystyrene sulfonate (PEDOT:PSS). Methods of enhancing the conductivity of PEDOT:PSS polymer using various composites and chemical solutions have been reviewed in detail. Furthermore, supercapacitors based on carbonized banana peels and methods of activation have been discussed in point. This review covers the up-to-date progress achieved in conductive polymer-based materials for supercapacitor electrodes. The effect of various composites with PEDOT:PSS have been discussed. The review result indicated that flexible, stretchable, lightweight, washable, and disposable wearable electronics based on banana peel and conductive polymers are highly demanding. Full article

(This article belongs to the Special Issue Latest Advances and Prospects of High-Performance Supercapacitors)

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