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Micromachines
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Supercapacitors: From Porous Materials to Applications
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Supercapacitors: From Porous Materials to Applications

A special issue of Micromachines (ISSN 2072-666X). This special issue belongs to the section "C：Chemistry".

Deadline for manuscript submissions: closed (5 May 2023) | Viewed by 9496

Special Issue Editor

Dr. Pei-Hsin (Christine) Young

E-Mail Website
Guest Editor
Department of Chemical and Materials Engineering, National Yunlin University of Science and Technology, Yunlin 64002, Taiwan
Interests: porous materials; MOFs; supercapacitors; batteries; water splitting
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The energy crisis and rapid growth in global pollution are major issues over the world. Because of the evolution of modern industries, the vast development of electronic devices has prompted an increasing demand for energy. Electrochemical energy conversion is considered to be the most effective technology for storing energy. One of the most commonly used electrical energy storage devices is the supercapacitor. Supercapacitors have attracted tremendous interest due to their outstanding advantages, including extraordinary rate capabilities, high power densities, and long cycling lifetimes. Electrode materials play a decisive role in obtaining higher energy densities. Porous materials are widely used electrode materials due to their high surface areas and porosities. The architecture and microstructure of porous materials, such as pore size distribution, pore size, and pore connectivity, are considered to be key factors for determining electrochemical performance. Therefore, it is vital to develop novel high-performance porous materials for electrodes.

This Special Issue of Micromachines focuses on “Supercapacitors: From Porous Materials to Applications”. The present Special Issue will address developments in the field of the design and development of porous materials. including porous carbons, MOFs, COFs, transition metal oxides/sulfides, and so on for supercapacitor applications.

Dr. Pei-Hsin (Christine) Young
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. Micromachines 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 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

  • porous materials
  • supercapacitors
  • electrode materials
  • carbon material
  • transition metal oxides/sulfides

Published Papers (5 papers)

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Research

12 pages, 3009 KiB  
Article
Preparation of Nitrogen and Phosphorus Doped Porous Carbon from Watermelon Peel as Supercapacitor Electrode Material
by Chi Yang, Penghui Li, Yumeng Wei, Yanting Wang, Bo Jiang and Wenjuan Wu
Micromachines 2023, 14(5), 1003; https://doi.org/10.3390/mi14051003 - 06 May 2023
Cited by 5 | Viewed by 2140
Abstract
The use of green and sustainable biomass-derived compounds to obtain excellent electrochemical properties is important to address growing environmental and energy issues. In this paper, cheap and abundant watermelon peel was used as a raw material to successfully synthesize nitrogen-phosphorus double-doped bio-based porous [...] Read more.
The use of green and sustainable biomass-derived compounds to obtain excellent electrochemical properties is important to address growing environmental and energy issues. In this paper, cheap and abundant watermelon peel was used as a raw material to successfully synthesize nitrogen-phosphorus double-doped bio-based porous carbon by a one-step carbonization method and explore it as a renewable carbon source for low-cost energy storage devices. The supercapacitor electrode exhibited a high specific capacity of 135.2 F/g at a current density of 1 A/g in a three-electrode system. A variety of characterization methods and electrochemical tests indicate that porous carbon prepared by this simple method has great potential as electrode materials for supercapacitors. Full article
(This article belongs to the Special Issue Supercapacitors: From Porous Materials to Applications)
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8 pages, 1324 KiB  
Article
Nitrogen Self-Doping Carbon Derived from Functionalized Poly(Vinylidene Fluoride) (PVDF) for Supercapacitor and Adsorption Application
by Yantao Zheng, Qifei Liu, Xingyu Guan, Yuan Liu, Shengqiang Nie and Yi Wang
Micromachines 2022, 13(10), 1747; https://doi.org/10.3390/mi13101747 - 15 Oct 2022
Viewed by 1107
Abstract
A new synthetic strategy has been developed for the facile fabrication of a N-doped porous carbon (NC-800) material via a facile carbonization of functionalized poly(vinylidene fluoride) (PVDF). The prepared NC-800 exhibits good specific capacitance of 205 F/g at 1 A/g and cycle stability [...] Read more.
A new synthetic strategy has been developed for the facile fabrication of a N-doped porous carbon (NC-800) material via a facile carbonization of functionalized poly(vinylidene fluoride) (PVDF). The prepared NC-800 exhibits good specific capacitance of 205 F/g at 1 A/g and cycle stability (95.2% retention after 5000 cycles at 1 A/g). The adsorption capacity of NC-800 on methylene blue and methyl orange was 780 mg/g and 800 mg/g, respectively. The facile and economical method and good performance (supercapacitor and adsorption) suggest that the NC-800 is a promising material for energy storage and adsorption. Full article
(This article belongs to the Special Issue Supercapacitors: From Porous Materials to Applications)
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8 pages, 2280 KiB  
Article
Mango-Stone-Derived Nitrogen-Doped Porous Carbon for Supercapacitors
by Yi Wang, Xinzi Yuan, Xingyu Guan, Kunling Ren, Yan Yang, Jun Luo and Yantao Zheng
Micromachines 2022, 13(9), 1518; https://doi.org/10.3390/mi13091518 - 14 Sep 2022
Cited by 2 | Viewed by 1318
Abstract
The preparation of N-doped porous carbon (NC-800) is presented via facile mango stone carbonization at 800 °C. The NC-800 material exhibits good cycle stability (the capacity retention is 97.8% after 5000 cycles) and high specific capacitance of 280 F/g at 1 A/g. Furthermore, [...] Read more.
The preparation of N-doped porous carbon (NC-800) is presented via facile mango stone carbonization at 800 °C. The NC-800 material exhibits good cycle stability (the capacity retention is 97.8% after 5000 cycles) and high specific capacitance of 280 F/g at 1 A/g. Furthermore, the assembled symmetric device of NC-800//NCs-800 exhibits about 31.1 Wh/kg of energy density at 800 W/kg in a voltage range of 0–1.6 V. The results of the study suggest that NC-800 may be a promising energy storage material for practical application. Full article
(This article belongs to the Special Issue Supercapacitors: From Porous Materials to Applications)
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12 pages, 2738 KiB  
Article
Construction of Ultrastable Conjugated Microporous Polymers Containing Thiophene and Fluorene for Metal Ion Sensing and Energy Storage
by Mohamed Gamal Mohamed, Huan-Yu Hu, Manivannan Madhu, Mohsin Ejaz, Santosh U. Sharma, Wei-Lung Tseng, Maha Mohamed Samy, Cheng-Wei Huang, Jyh-Tsung Lee and Shiao-Wei Kuo
Micromachines 2022, 13(9), 1466; https://doi.org/10.3390/mi13091466 - 04 Sep 2022
Cited by 17 | Viewed by 2051
Abstract
In this study, we have used the one-pot polycondensation method to prepare novel 2D conjugated microporous polymers (Th-F-CMP) containing thiophene (Th) and fluorene (Fl) moieties through the Suzuki cross-coupling reaction. The thermogravimetric analysis (TGA) data revealed that Th-F-CMP (Td10 = 418 [...] Read more.
In this study, we have used the one-pot polycondensation method to prepare novel 2D conjugated microporous polymers (Th-F-CMP) containing thiophene (Th) and fluorene (Fl) moieties through the Suzuki cross-coupling reaction. The thermogravimetric analysis (TGA) data revealed that Th-F-CMP (Td10 = 418 °C, char yield: 53 wt%). Based on BET analyses, the Th-F-CMP sample displayed a BET specific surface area of 30 m2 g−1, and the pore size was 2.61 nm. Next, to show the effectiveness of our study, we utilized Th-F-CMP as a fluorescence probe for the selective detection of Fe3+ ions at neutral pH with a linear range from 2.0 to 25.0 nM (R2 = 0.9349). Furthermore, the electrochemical experimental studies showed that the Th-F-CMP framework had a superior specific capacity of 84.7 F g−1 at a current density of 0.5 A g−1 and outstanding capacitance retention (88%) over 2000 cycles. Full article
(This article belongs to the Special Issue Supercapacitors: From Porous Materials to Applications)
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12 pages, 4250 KiB  
Article
Highly Porous Holey Carbon for High Areal Energy Density Solid-State Supercapacitor Application
by Christine Young, Hong-Ting Chen and Sahn-Ze Guo
Micromachines 2022, 13(6), 916; https://doi.org/10.3390/mi13060916 - 09 Jun 2022
Cited by 7 | Viewed by 1726
Abstract
Biomass materials are perceived as sustainable, carbon-rich precursors for the fabrication of carbon materials. In this study, we demonstrated the capacitance performance of biomass-derived carbon, produced by using golden shower tree seeds (GTs) as carbon precursors and potassium ferrate (K2FeO4 [...] Read more.
Biomass materials are perceived as sustainable, carbon-rich precursors for the fabrication of carbon materials. In this study, we demonstrated the capacitance performance of biomass-derived carbon, produced by using golden shower tree seeds (GTs) as carbon precursors and potassium ferrate (K2FeO4) as the activation agent. The as-prepared porous carbon (GTPC) possessed an ultrahigh specific surface area (1915 m2 g−1) and abundant pores. They also exhibited superior electrochemical performance, owing to their well-constructed porous structure, high surface area, and optimized porous structure. Optimized activated carbon (GTPC-1) was used to assemble a symmetric solid-state supercapacitor device with poly(vinyl alcohol) (PVA)/H2SO4 as a solid-state gel electrolyte. The device exhibited a maximum areal energy density of 42.93 µWh cm−2 at a power density of 520 µW cm−2. Full article
(This article belongs to the Special Issue Supercapacitors: From Porous Materials to Applications)
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