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Nanomaterials for Electrochemical Energy Storage Applications
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Nanomaterials for Electrochemical Energy Storage Applications

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

Deadline for manuscript submissions: 20 June 2025 | Viewed by 1627

Special Issue Editor

Dr. Kaipeng Liu

E-Mail Website
Guest Editor
Department of Electrical and Computer Engineering, National University of Singapore, Singapore 117583, Singapore
Interests: FEM; IGA; inverse-design; nanophotonics; nano energy

Special Issue Information

Dear Colleagues,

Due to the widespread adoption of new energy technologies in recent years, low-cost, high-reliability, and long-life chemical energy storage technologies have garnered significant attention from the academic and industrial communities. The primary goal of this Special Issue is to present recent trends in the use of nanomaterials for electrochemical energy storage applications, including energy storage mechanisms and the design of energy storage devices such as solid-state batteries, 3D-printed batteries, and other new types of electrochemical energy storage system. By providing detailed insights and novel perspectives, this Special Issue will offer a comprehensive overview of how nanomaterials are revolutionizing the field of electrochemical energy storage. Researchers, engineers, and industry professionals are encouraged to submit their work to this valuable resource, which will keep them informed about the latest developments and challenges in this dynamic area of study.

We welcome the submission of research papers and review articles. The research topics that we would like contributors to address include, but are not limited to, the following:

  • Electrochemical energy storage mechanism;
  • Nanomaterials for electrochemical energy storage;
  • Solid-state battery technology;
  • Three-dimensional-printed battery;
  • Flow battery;
  • Battery reliability and life;
  • Extreme environment energy storage materials;
  • Fast charging technology;
  • High-density energy storage materials;
  • Ultralight energy storage materials and energy storage metamaterials.

Dr. Kaipeng Liu
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. 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

  • electrochemical energy storage
  • nanoenergy
  • energy materials
  • solid-state battery
  • nanomaterials
  • 3D printed battery
  • thermoelectric materials

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Further information on MDPI's Special Issue policies can be found here.

Published Papers (2 papers)

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Research

13 pages, 3152 KiB  
Article
Thermodynamic and Electrochemical Characterization of Nd* (III) Ion Diffusion in (LiF-CaF2)-Nd2O3 Molten Salts
by Kailei Sun, Linsheng Luo and Xu Wang
Materials 2025, 18(3), 706; https://doi.org/10.3390/ma18030706 - 6 Feb 2025
Viewed by 573
Abstract
Data on the diffusion and migration characteristics of rare earth metal ions in fluoride molten salt systems are crucial for optimizing the electrolytic preparation of rare earth metals and alloys. This study investigated the solubility, conductivity, and density of the (LiF-CaF2) [...] Read more.
Data on the diffusion and migration characteristics of rare earth metal ions in fluoride molten salt systems are crucial for optimizing the electrolytic preparation of rare earth metals and alloys. This study investigated the solubility, conductivity, and density of the (LiF-CaF2)eut. system saturated with Nd₂O₃ using the isothermal saturation method, conductivity cell constant variation, and the Archimedes method, respectively. Employing the Hittorf method’s principles, a three-compartment electrolyzer was designed to determine the mobility number of dissolved Nd* (III) ions in the saturated (LiF-CaF2)eut.-Nd2O3 system. The radial distribution function was computed via ab initio molecular dynamics, and the self-diffusion coefficient of ions in the system was analyzed. Utilizing the Nernst–Einstein equation, the diffusion coefficient of Nd* (III) ions was calculated. The solubility, conductivity, and density of the saturated (LiF-CaF2)eut.-Nd2O3 system exhibit linear variation within 1173–1473 K. The mobility number of solvated Nd* (III) ions increases linearly with temperature, displaying nonlinear variation with potential within 3.5–4.5 V, and gradually decreases after reaching a maximum of 4.0–4.25 V. The radial distribution function reveals the highest diffusion and mobility barriers for Nd* (III) ions, with solvated O* (II) ions presenting the most significant hindrance. The Nd* (III) ion diffusion coefficients linearly increase with temperature (1123–1373 K) under specific potential conditions (3.5–4.5 V) but exhibit nonlinear changes with potential (3.5–4.5 V) under fixed temperature conditions (1123–1373 K), then decrease after peaking within 4.0–4.5 V. The diffusion coefficients of Nd* (III) ions are sensitive to potential changes. Full article
(This article belongs to the Special Issue Nanomaterials for Electrochemical Energy Storage Applications)
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12 pages, 12891 KiB  
Article
Growth of Oxide and Nitride Layers on Titanium Foil and Their Electrochemical Properties
by Song Hyeon Kim and Young-Il Kim
Materials 2025, 18(2), 380; https://doi.org/10.3390/ma18020380 - 15 Jan 2025
Viewed by 635
Abstract
The surface of titanium foil can be modified by heating in the air, in a N2 flow, and in an NH3 flow. Upon heating in the air, the elemental Ti gradually transforms to Ti3O at 550 °C and to [...] Read more.
The surface of titanium foil can be modified by heating in the air, in a N2 flow, and in an NH3 flow. Upon heating in the air, the elemental Ti gradually transforms to Ti3O at 550 °C and to rutile TiO2 at above 700 °C. Treatment in a N2 flow leads similarly to Ti3O at 600 °C and TiO2 at 700 °C, although the overall reaction is slower. Meanwhile, nitridation in the N2 flow is minimal, even at 900 °C. Heat treatment in an NH3 flow produces nitride phases through the ammonolysis of the hexagonal Ti. With an ammonolysis at 900 °C, trigonal Ti2N and cubic TiN form together while, at higher temperatures, TiN is dominant. The TiN layer can also be obtained via the ammonolysis of the TiO2 coating, that is, by the sequential treatments of Ti in the air and then in an NH3 flow. The titanium nitride layers have particulate microstructures and varying degrees of porosity, depending on the ammonolysis temperature and time. The TiO2-derived TiN has a significantly higher capacitance than TiN derived directly from Ti. The optimally prepared TiN specimen exhibits an areal specific capacitance of 66.2 F/cm2 at 0.034 mA/cm2. Full article
(This article belongs to the Special Issue Nanomaterials for Electrochemical Energy Storage Applications)
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