Special Issue "Porous Materials for Water Splitting and Supercapacitors"

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

Deadline for manuscript submissions: 15 January 2024 | Viewed by 924

Special Issue 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 global pollution are significant challenges worldwide. The proliferation of modern industries has led to a substantial increase in the demand for energy due to the extensive growth of electronic devices. To address these issues, renewable energy and electrochemical energy conversion have emerged as highly effective technologies for energy storage. Hydrogen, known for its high energy density, is a promising energy source, and one method of producing it is through electrochemical water splitting using electrocatalysts. Supercapacitors are widely utilized for electrical energy storage and have garnered significant attention due to their exceptional advantages, including remarkable rate capabilities, high power densities, and long cycling lifetimes.

The employed electrocatalysts and electrode materials play crucial roles in facilitating improved electrochemical reactions. Porous materials possess high surface areas and porosities, making them particularly appealing. Factors such as pore size distribution, pore size, and pore connectivity significantly impact the architecture and microstructure of porous materials, thereby influencing their electrochemical performance. Consequently, the development of novel high-performance porous materials for electrodes is of utmost importance.

This Special Issue of Micromachines aims to explore the theme of "Porous Materials for Water Splitting and Supercapacitors." It will cover advancements in the design and development of porous materials, encompassing porous carbons, MOFs, COFs, transition metal oxides/sulfides, and other related materials.

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.


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

Published Papers (1 paper)

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18 pages, 10703 KiB  
Ultrafast Fabrication of H2SO4, LiCl, and Li2SO4 Gel Electrolyte Supercapacitors with Reduced Graphene Oxide (rGO)-LiMnOx Electrodes Processed Using Atmospheric-Pressure Plasma Jet
Micromachines 2023, 14(9), 1701; https://doi.org/10.3390/mi14091701 - 30 Aug 2023
Viewed by 782
Pastes containing reduced graphene oxide (rGO) and LiCl-Mn(NO3)2·4H2O are screen-printed on a carbon cloth substrate and then calcined using a nitrogen atmospheric-pressure plasma jet (APPJ) for conversion into rGO-LiMnOx nanocomposites. The APPJ processing time is within [...] Read more.
Pastes containing reduced graphene oxide (rGO) and LiCl-Mn(NO3)2·4H2O are screen-printed on a carbon cloth substrate and then calcined using a nitrogen atmospheric-pressure plasma jet (APPJ) for conversion into rGO-LiMnOx nanocomposites. The APPJ processing time is within 300 s. RGO-LiMnOx on carbon cloth is used to sandwich H2SO4, LiCl, or Li2SO4 gel electrolytes to form hybrid supercapacitors (HSCs). The areal capacitance, energy density, and cycling stability of the HSCs are evaluated using electrochemical measurement. The HSC utilizing the Li2SO4 gel electrolyte exhibits enhanced electrode–electrolyte interface reactions and increased effective surface area due to its high pseudocapacitance (PC) ratio and lithium ion migration rate. As a result, it demonstrates the highest areal capacitance and energy density. The coupling of charges generated by embedded lithium ions with the electric double-layer capacitance (EDLC) further contributed to the significant overall capacitance enhancement. Conversely, the HSC with the H2SO4 gel electrolyte exhibits better cycling stability. Our findings shed light on the interplay between gel electrolytes and electrode materials, offering insights into the design and optimization of high-performance HSCs. Full article
(This article belongs to the Special Issue Porous Materials for Water Splitting and Supercapacitors)
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