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Advanced Energy Materials: Fundamentals, Advances, Challenges, and Opportunities

A special issue of Molecules (ISSN 1420-3049). This special issue belongs to the section "Materials Chemistry".

Deadline for manuscript submissions: closed (31 October 2021) | Viewed by 2728

Special Issue Editor


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Guest Editor
Senior Scientist, Institute of Power Electronics and Electrical Drives, Rheinisch-Westfälische Technische Hochschule Aachen (RWTH), Aachen, Germany
Interests: batteries; super capacitors; solar photovoltaics (PV); solar PV/Battery systems; renewable energy sources; fuel cells; nanomaterials

Special Issue Information

Dear Colleagues,

Environmental and climate change concerns over the use of fossil fuels and their resource constraints, combined with the ever-increasing world population and energy security fears, have incited an increasing pressure and sense of urgency toward the development of more holistic strategies, including sustainable energy production from renewable energy sources (solar power, wind, etc.), deploying electrified means of transportation, and improved energy delivery systems. However, the large-scale deployment of renewable energy sources (due to their intermittent nature) and electromobility sector (electric vehicles, XEVs) demands advanced electrochemical energy storage devices such as batteries, super capacitors, the hybrids thereof, and other technologies. Owing to their importance, both green/renewable energy sources and electrical storage devices have attracted a large amount of attention from academia, industry, and policy/decision makers, as well as rapidly growing funds and research outputs such as publications, patents, policy briefs, and so on. In this Special Issue, we invite original (full) research articles, reviews, and perspectives on the topics mentioned below. In the case of reviews and perspectives, instead of simply chronicling who did what and when, authors should critically examine and discuss existing research status/landscape, and also put prospects and insights into future research directions, recommend holistic solutions, guidelines for further materials and technology-related development and so forth. Instead of summary-style articles, we anticipate authors to make use of literature knowledge to propose new conclusions, and unanswered questions as forward guidance to the field of energy storage and conversion devices.

List of potential topics to be covered include (but are not limited to):

  • Rechargeable batteries based on Li, Na, K, Ca, Mg, Al cations, and other systems;
  • Super capacitors, battery/super capacitor hybrid devices;
  • Organic and inorganic photovoltaics: dye-sensitized solar cells, organic solar cells, perovskite solar cells, silicon heterojunction solar cells, etc.;
  • Integrated solar PV/Battery, solar PV/super capacitor, solar PV/battery–super capacitor systems;
  • Renewable energy sources (solar, wind);
  • Battery technology and off-grid energy generation/sources;
  • Interphases and interfaces in electrochemical devices.

Dr. Gebrekidan Gebresilassie Eshetu
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. Molecules 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 2700 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

  • Energy storage devices
  • Energy conversion devices
  • Batteries
  • Super capacitors
  • Solar Photovoltaics
  • Renewable energy sources
  • Off-grid energy
  • Nanomaterials
  • Interphases/interfaces

Published Papers (1 paper)

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Research

11 pages, 4668 KiB  
Article
Mechanochemical Synthesis and Nitrogenation of the Nd1.1Fe10CoTi Alloy for Permanent Magnet
by Hugo Martínez Sánchez, George Hadjipanayis, Germán Antonio Pérez Alcázar, Ligia Edith Zamora Alfonso and Juan Sebastián Trujillo Hernández
Molecules 2021, 26(13), 3854; https://doi.org/10.3390/molecules26133854 - 24 Jun 2021
Cited by 2 | Viewed by 1779
Abstract
In this work, the mechanochemical synthesis method was used for the first time to produce powders of the nanocrystalline Nd1.1Fe10CoTi compound from Nd2O3, Fe2O3, Co and TiO2. High-energy-milled powders [...] Read more.
In this work, the mechanochemical synthesis method was used for the first time to produce powders of the nanocrystalline Nd1.1Fe10CoTi compound from Nd2O3, Fe2O3, Co and TiO2. High-energy-milled powders were heat treated at 1000 °C for 10 min to obtain the ThMn12-type structure. Volume fraction of the 1:12 phase was found to be as high as 95.7% with 4.3% of a bcc phase also present. The nitrogenation process of the sample was carried out at 350 °C during 3, 6, 9 and 12 h using a static pressure of 80 kPa of N2. The magnetic properties Mr, µ0Hc, and (BH)max were enhanced after nitrogenation, despite finding some residual nitrogen-free 1:12 phase. The magnetic values of a nitrogenated sample after 3 h were Mr = 75 Am2 kg–1, µ0Hc = 0.500 T and (BH)max = 58 kJ·m–3. Samples were aligned under an applied field of 2 T after washing and were measured in a direction parallel to the applied field. The best value of (BH)max ~ 114 kJ·m–3 was obtained for 3 h and the highest µ0Hc = 0.518 T for 6 h nitrogenation. SEM characterization revealed that the particles have a mean particle size around 360 nm and a rounded shape. Full article
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