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Materials for Electrochemical Energy Systems
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Materials for Electrochemical Energy Systems

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Electronic Materials".

Deadline for manuscript submissions: closed (10 January 2023) | Viewed by 6166

Special Issue Editors

Dr. Daniela Ion-Ebrașu

E-Mail Website
Guest Editor
National Research and Development Institute for Cryogenic and Isotopic Technologies – ICSI Rm. Valcea, 240050 Rm.Valcea, Romania
Interests: proton exchange membranes; alkaline membranes synthesis; electrochemical impedance spectroscopy; conductive polymers; electrocatalysts; cycling voltammetry; Tafel and Levich plots; graphene synthesis; doping and functionalization; fuel cells; electrolysis; batteries; solar cells
Dr. Violeta Purcar

E-Mail Website
Guest Editor
National Research and Development Institute for Chemistry and Petrochemistry – ICECHIM, Splaiul Independentei, No. 202, 6th District, 060021 Bucharest, Romania
Interests: sol-gel hybrid materials; nanocomposites, nanoparticles; films; functionalization and surface modifications; applications of materials/nanocomposites; characterization methods (e.g., FTIR, SEM, TEM, TGA, contact angle measurement)
Special Issues, Collections and Topics in MDPI journals
Dr. Simona Căprărescu

E-Mail Website
Guest Editor
Department of Inorganic Chemistry, Physical Chemistry and Electrochemistry, Faculty of Chemical Engineering and Biotechnologies, University Politehnica of Bucharest, Bucharest, Romania
Interests: polymers; biopolymers; membranes; wastewater; pollutants; hybrid films; electrochemistry; corrosion; membrane separation processes
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

We are pleased to invite you to submit your work to this Special Issue on “Materials for Electrochemical Energy Systems”. The preparation of different materials (e.g., membranes, polymers, composites, catalysts, graphene and carbon nanotubes, ultra-supercritical materials, coatings and protection materials, functional materials, as well as sensing materials used in harsh environments) and their applications for different types of energy have received significant attention in recent years due to the advantages of these materials, such as their high selectivity, feasibility, fouling resistance, chemical and photochemical oxidation resistance, chemical, mechanical and thermal stability, high oxidation resistance, low cost, low consumption energy, and higher efficiencies when operated at higher temperatures.

This Special Issue aims to cover a broad range of subjects, from the synthesis to the preparation of different materials and their characterization and applications (e.g., in fuel cells, electrolysis, batteries, solar cells, supercapacitors, sensors, electrodialysis, and ultra-, nano- and microfiltration). The Special Issue is also open to accounts of the development of advanced materials, sustainable structural and functional materials for fossil power, solar energy, wind energy, geothermal energy, biofuels, ocean energy, and hydropower as well as advanced energy-harvesting technologies. Submissions on micro- and nanoelectromechanical systems (devices) and new developments in experimental methods and device performance measurement techniques will be gladly considered.

In this Special Issue, original research articles, full research papers and reviews are welcome. Potential topics include, but are not limited to:

  • Energy storage materials
  • Materials development in advanced energy systems
  • Structure–property relationships
  • Advances in synthesis and preparation
  • Sustainability and materials security
  • Materials for the production and storage of energy
  • Alternative hybrid systems
  • Materials applications

Characterization of materials by various techniques (e.g., FTIR, SEM, TEM, TGA, AFM, XRD, electrochemical impedance spectroscopy (EIS))

Dr. Daniela Ion-Ebrașu
Dr. Violeta Purca
Dr. Simona Căprărescu
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

  • polymers
  • graphene
  • membranes
  • electrocatalysts
  • fuel cells
  • electrolysis
  • batteries
  • solar cells
  • supercapacitors
  • sensors

Published Papers (3 papers)

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Research

11 pages, 2682 KiB  
Article
Synthesis and Characterization of Ni Nanoparticles via the Microemulsion Technique and Its Applications for Energy Storage Devices
by Zia Ur Rehman, Mohsan Nawaz, Hameed Ullah, Imad Uddin, Salma Shad, Elsyed Eldin, Razan A. Alshgari, Aboud Ahmed Awadh Bahajjaj, Waqas Ul Arifeen and Muhammad Sufyan Javed
Materials 2023, 16(1), 325; https://doi.org/10.3390/ma16010325 - 29 Dec 2022
Cited by 6 | Viewed by 1600
Abstract
Herein, a unique synthetic approach called microemulsion is used to create nickel nanoparticles (Ni-NPs). SEM, TEM, EDX, and XRD techniques were employed for the investigation of morphology and structures of the synthesized material. Electrons from electroactive components are transferred to external circuits by [...] Read more.
Herein, a unique synthetic approach called microemulsion is used to create nickel nanoparticles (Ni-NPs). SEM, TEM, EDX, and XRD techniques were employed for the investigation of morphology and structures of the synthesized material. Electrons from electroactive components are transferred to external circuits by Ni-NPs’ superior electrical conductivity and interconnected nanostructures, which also provide a large number of channels for ion diffusion and additional active sites. The experimental findings showed that as a positive electrode for supercapacitors (SC), Ni-NPs had an outstanding ability to store charge, with a dominant capacitive charge storage of 72.4% when measured at 10 mV/s. Furthermore, at 1 A/g, Ni-NP electrodes exhibit a maximum capacitance of 730 F/g. Further, the Ni-NP electrode retains 92.4% of its capacitance even for 5000 cycles, highlighting possible applications for it in the developing field of renewable energy. The current study provides a new method for producing high-rate next-generation electrodes for supercapacitors. Full article
(This article belongs to the Special Issue Materials for Electrochemical Energy Systems)
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14 pages, 3146 KiB  
Article
Iodine-Doped Graphene Oxide: Fast Single-Stage Synthesis and Application as Electrocatalyst
by Adriana Marinoiu, Daniela Ion-Ebrasu, Amalia Soare and Mircea Raceanu
Materials 2022, 15(17), 6174; https://doi.org/10.3390/ma15176174 - 05 Sep 2022
Cited by 2 | Viewed by 1823
Abstract
Iodine-doped graphene oxide is attracting great attention as fuel cell (FC) electrocatalysts with a high activity for the oxygen reduction reaction (ORR). However, most of the reported preparation techniques for iodine-doped graphene (I/rGO) could be transposed into practice as multiple step procedures, a [...] Read more.
Iodine-doped graphene oxide is attracting great attention as fuel cell (FC) electrocatalysts with a high activity for the oxygen reduction reaction (ORR). However, most of the reported preparation techniques for iodine-doped graphene (I/rGO) could be transposed into practice as multiple step procedures, a significant disadvantage for scale-up applications. Herein, we describe an effective, eco-friendly, and fast technique for synthesis by a microwave-tuned one-stage technique. Structural and morphological characterizations evidenced the obtaining of nanocomposite sheets, with iodine bonded in the graphene matrix. The ORR performance of I/rGO was electrochemically investigated and the enhancement of the cathodic peak was noted. Based on the noteworthy electrochemical properties for ORR activity, the prepared I/rGO can be considered an encouraging alternative for a more economical electrode for fuel cell fabrication and commercialization. In this perspective, the iodine-based catalysts synthesis can be considered a step forward for the metal-free electrocatalysts development for the oxygen reduction reaction in fuel cells. Full article
(This article belongs to the Special Issue Materials for Electrochemical Energy Systems)
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12 pages, 3808 KiB  
Article
Hydrothermal Synthesis of Binder-Free Metallic NiCo2O4 Nano-Needles Supported on Carbon Cloth as an Advanced Electrode for Supercapacitor Applications
by Qasim Abbas, Sajid Hussain Siyal, Abdul Mateen, Najam Ul Hassan, Asim Idrees, Zia Ur Rehman, ElSayed M. Tag El Din, Majed A. Bajaber and Muhammad Sufyan Javed
Materials 2022, 15(13), 4499; https://doi.org/10.3390/ma15134499 - 26 Jun 2022
Cited by 10 | Viewed by 2143
Abstract
It is of great significance to design electrochemical energy conversion and storage materials with excellent performance to fulfill the growing energy demand. Bimetallic cobalt/nickel-based electrode materials exhibit excellent electrical conductivity compared to mono oxides. However, their potential as electrode materials for high-performance supercapacitors [...] Read more.
It is of great significance to design electrochemical energy conversion and storage materials with excellent performance to fulfill the growing energy demand. Bimetallic cobalt/nickel-based electrode materials exhibit excellent electrical conductivity compared to mono oxides. However, their potential as electrode materials for high-performance supercapacitors (SCs) is limited because of their poor cycling stability and high-capacity fading. This work demonstrates the synthesis of binder-free bimetallic NiCo2O4 nano-needles supported on CC (NCO@CC) via a facile and scalable hydrothermal process. Excellent electrical conductivity and interconnected nanostructure of NCO@CC nano-needles provide the fast transfer of electrons with numerous channels for ion diffusion. Owing to such features, the binder-free NCO@CC electrode for SC discloses excellent specific capacitance (1476 Fg−1 at 1.5 Ag−1) with 94.25% capacitance retention even after 5000 cycles. From these outstanding electrochemical performances, it can be inferred that NCO@CC nano-needle array-structured electrodes may be potential candidates for SC applications. Full article
(This article belongs to the Special Issue Materials for Electrochemical Energy Systems)
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