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Advances in Electroactive Materials: Synthesis, Properties, and Characterization
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Advances in Electroactive Materials: Synthesis, Properties, and Characterization

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

Deadline for manuscript submissions: closed (20 April 2023) | Viewed by 2594

Special Issue Editor

Dr. Eugeniya V. Nikitina

E-Mail Website
Guest Editor
Institute of High Temperature Electrochemistry of the Ural Branch of the Russian Academy of Sciences, Moscow, Russia
Interests: methods for the study of oxygen formations on the surface of metallic materials; the effect of adsorption and complexation on the stepwise course of anodic oxidation of metals; theory of crystal growth and dissolution; thermodynamic aspects of materials science; influence of oxidative activity of the melt, stimulants and corrosion inhibitors; depassivation and development of local corrosion lesions

Special Issue Information

Dear Colleagues,

The purpose of this Special Issue of Materials is to provide a platform for the exchange of new ideas and achievements in obtaining and certifying new functional materials for heterogeneous catalysis, evaluating the possibilities of electrochemical synthesis in the technology of obtaining new materials, and analyzing experimental and theoretical concepts in the study of such a multifaceted phenomenon as heterogeneous catalysis.

Among other things, the following topics are the main areas of interest for this Special Issue:

  • The effect of defects and non-stoichiometry on the catalytic properties of materials, the synthesis of functional nanomaterials, and the production of mesoporous structures. The relationship of the near-surface volume of the material with the catalytic activity. Modern methods of certification of substrates and catalysts.
  • Obtaining perfect single crystals and polycrystals with a highly homogeneous structure and a minimum concentration of defects
  • Electrochemical synthesis and evolution of inorganic materials in aggressive environments.
  • Obtaining certification and research for various properties of materials for heterogeneous catalysis.
  • Modeling of the effect of synthesis conditions on the microstructure, morphology, composition, and properties of catalysts and substrates.
  • Electrocrystallization of promising materials for heterogeneous catalysis.

Dr. Eugeniya V. Nikitina
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

  • functional materials for catalysis
  • heterogeneous catalysis
  • mesoporous structure
  • near-surface volume
  • complex oxides
  • surface modification
  • carbon materials

Published Papers (2 papers)

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Research

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10 pages, 3060 KiB  
Article
Rhenium Electrodeposition and Its Electrochemical Behavior in Molten KF-KBF4-B2O3-KReO4
by Aleksandr A. Chernyshev, Stepan P. Arkhipov, Alexey P. Apisarov, Aleksander S. Shmygalev, Andrey V. Isakov and Yury P. Zaikov
Materials 2022, 15(23), 8679; https://doi.org/10.3390/ma15238679 - 05 Dec 2022
Cited by 2 | Viewed by 1300
Abstract
The electrochemical behavior of rhenium ions in the molten KF-KBF4-B2O3 salt was systematically studied, and pure metallic rhenium was obtained at the cathode. The processes of rhenium ions reduction and diffusion in molten KF-KBF4-B2O [...] Read more.
The electrochemical behavior of rhenium ions in the molten KF-KBF4-B2O3 salt was systematically studied, and pure metallic rhenium was obtained at the cathode. The processes of rhenium ions reduction and diffusion in molten KF-KBF4-B2O3 were determined using cyclic voltammetry, stationary galvanostatic and polarization curves analyses. The values of diffusion coefficients were 3.15 × 10−5 cm2/s and 4.61 × 10−5 cm2/s for R1 and R2, respectively. Rhenium electrodeposition was carried out at a constant potential. The process of rhenium cathode reduction in KF-KBF4-B2O3 at 773 K was found to be a one-step reaction Re(VII) → Re, and rhenium electrodeposition presumably occurred from two types of complex rhenium ions (KReO4 and K3ReO5). Both processes are quasi-reversible and controlled by diffusion. The obtained cathode deposit was analyzed by SEM, EDX, ICP-OES and XRD methods. The obtained deposit had a thread structure and rhenium was the main component. Full article
(This article belongs to the Special Issue Advances in Electroactive Materials: Synthesis, Properties, and Characterization)
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Review

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23 pages, 2055 KiB  
Review
Overview and Recent Advances in Hyphenated Electrochemical Techniques for the Characterization of Electroactive Materials
by José Juan García-Jareño, Jerónimo Agrisuelas and Francisco Vicente
Materials 2023, 16(12), 4226; https://doi.org/10.3390/ma16124226 - 07 Jun 2023
Viewed by 895
Abstract
A hyphenated electrochemical technique consists of the combination of the coupling of an electrochemical technique with a non-electrochemical technique, such as spectroscopical and optical techniques, electrogravimetric techniques, and electromechanical techniques, among others. This review highlights the development of the use of this kind [...] Read more.
A hyphenated electrochemical technique consists of the combination of the coupling of an electrochemical technique with a non-electrochemical technique, such as spectroscopical and optical techniques, electrogravimetric techniques, and electromechanical techniques, among others. This review highlights the development of the use of this kind of technique to appreciate the useful information which can be extracted for the characterization of electroactive materials. The use of time derivatives and the acquisition of simultaneous signals from different techniques allow extra information from the crossed derivative functions in the dc-regime to be obtained. This strategy has also been effectively used in the ac-regime, reaching valuable information about the kinetics of the electrochemical processes taking place. Among others, molar masses of exchanged species or apparent molar absorptivities at different wavelengths have been estimated, increasing the knowledge of the mechanisms for different electrode processes. Full article
(This article belongs to the Special Issue Advances in Electroactive Materials: Synthesis, Properties, and Characterization)
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