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New Research and Application of Advanced Composite Materials in Energy...
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New Research and Application of Advanced Composite Materials in Energy Applications

A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "D1: Advanced Energy Materials".

Deadline for manuscript submissions: closed (25 May 2023) | Viewed by 3617

Special Issue Editor

Dr. Suhana Mohd Said

E-Mail Website
Guest Editor
Department of Electrical Engineering, Universiti Malaya, 50603 Kuala Lumpur, Malaysia
Interests: liquid crystals; density functional theory modeling thermoelectric devices; lead-free solder

Special Issue Information

Dear Colleagues,

The Guest Editor is inviting submissions to a Special Issue of Energies on the subject area of “New Research and Application of Advanced Composite Materials in Energy Applications“. The area of composite materials possesses a far-reaching presence in the diverse fields of science and technology. Recent advances in composite materials have served to significantly boost the performance of energy technologies, ranging from mechanical improvement of components in energy systems to advanced electronic composite materials in energy devices incorporating nanomaterials. Complementary to these advances in composite material formulations are observations and understanding of interesting fundamental physical and chemical phenomena related to these advanced composite materials.

This Special Issue will deal with recent advances in the multidisciplinary areas of research and application in advanced composite materials in energy applications. Topics of interest for publication include but are not limited to:

  • Composite thin films in energy;
  • Polymer–nanoparticle composites in energy applications;
  • Composite electrode materials;
  • Composite nanomaterials;
  • Synthesis and fabrication of composite materials in energy;
  • Surface science of composite materials;
  • Theoretical studies and modeling of composite materials.

Dr. Suhana Mohd Said
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. 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

  • Composite
  • Nanomaterials
  • Thin film
  • Energy

Published Papers (2 papers)

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Research

12 pages, 3977 KiB  
Article
Evaluation of Bi-Functional Electrochemical Catalytic Activity of Co3O4-CoFe2O4 Composite Spinel Oxide
by Ji-Woo Park and Young-Wan Ju
Energies 2023, 16(1), 173; https://doi.org/10.3390/en16010173 - 23 Dec 2022
Cited by 4 | Viewed by 1446
Abstract
Oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) are important for developing energy systems such as fuel cells and metal–air batteries. Precious metal catalysts, such as Pt and IrO2, have been considered electrochemical catalysts because of their excellent activity for [...] Read more.
Oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) are important for developing energy systems such as fuel cells and metal–air batteries. Precious metal catalysts, such as Pt and IrO2, have been considered electrochemical catalysts because of their excellent activity for the ORR and OER. However, their disadvantages, such as low durability for long-term operation and high price, necessitate the development of alternative electrochemical catalysts. Transition metal oxides with excellent electrical conductivity, high efficiency, and stability have been considered alternative electrochemical catalysts owing to their ORR and OER activities, which are similar to those of precious metal catalysts. Therefore, in this study, composite catalyst materials comprising Co3O4 and CoFe2O4 spinel oxides were synthesized via hydrothermal synthesis. The synthesized composite oxides exhibit bi-functional electrochemical catalytic activity for ORR and OER owing to the large active surface area and increased number of oxygen vacancies via the nanostrain in Co3O4 nanoparticles. Full article
(This article belongs to the Special Issue New Research and Application of Advanced Composite Materials in Energy Applications)
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9 pages, 2117 KiB  
Article
Acoustic Energy Harvesting of Piezoelectric Ceramic Composites
by Jose Figueroa, Jr. and Margo Staruch
Energies 2022, 15(10), 3734; https://doi.org/10.3390/en15103734 - 19 May 2022
Cited by 3 | Viewed by 1638
Abstract
Acoustic energy is an often overlooked but increasingly prevalent source of ambient energy that could be scavenged to power a wide range of devices. Piezoelectric materials are often used, but the tradeoff between acoustic impedance matching and the amount of ceramic piezoelectric material [...] Read more.
Acoustic energy is an often overlooked but increasingly prevalent source of ambient energy that could be scavenged to power a wide range of devices. Piezoelectric materials are often used, but the tradeoff between acoustic impedance matching and the amount of ceramic piezoelectric material as the active material has not previously been investigated. In this work, commercially available 1–3 dice and fill composites with various fill factors (25%, 45%, and 65% of Pb(Zr,Ti)O3) and different acoustic impedance values were tested using an impedance tube and then modeled using a KLM equivalent circuit model. As expected, a higher amount of ceramic material resulted in a higher acoustic absorption coefficient. Experimentally, the highest fill factor with the highest piezoelectric coefficient also resulted in larger output power at all dB levels, reaching a maximum of 115 nW (84 nW/cm3) at 111 dBSPL for the 65% fill sample. In the model, the 25% fill factor with the best acoustic impedance matching shows the highest expected output power instead, but this discrepancy is most likely due to a lowered piezoelectric coefficient during testing due to the clamping conditions. Full article
(This article belongs to the Special Issue New Research and Application of Advanced Composite Materials in Energy Applications)
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