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Coatings
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Advanced Materials and Thin Films for Electrical Energy Storage
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Advanced Materials and Thin Films for Electrical Energy Storage

A special issue of Coatings (ISSN 2079-6412). This special issue belongs to the section "Surface Engineering for Energy Harvesting, Conversion, and Storage".

Deadline for manuscript submissions: closed (31 December 2023) | Viewed by 3636

Special Issue Editors

Prof. Dr. Hongpeng Li

E-Mail Website
Guest Editor
School of Mechanical Engineering, Yangzhou University, Yangzhou, China
Interests: advanced energy storage materials; carbon materials; transition metal oxides or nitrides, conductive polymers; thin films; supercapacitors; batteries
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Dong Sui

E-Mail Website
Guest Editor
Key Laboratory of Function-Oriented Porous Materials, College of Chemistry and Chemical Engineering, Luoyang Normal University, Luoyang, China
Interests: advanced energy storage materials; porous materials; supercapacitors; sodium ion batteries; lithium ion batteries

Special Issue Information

Dear Colleagues,

The demand for continued energy supply is one of the tremendous challenges that we are facing today due to the disparity between increasing energy requirements and the worldwide energy shortage. Meanwhile, the recent trend toward the miniaturization and portability of electronic devices has rapidly advanced the development of microscale energy storage units. Electrochemical energy storage and conversion are represented as the most effective technologies for the utilization of energy. To obtain higher energy densities and energy conversion efficiency, develo** advanced high-performance materials and thin films for electrochemical energy storage and conversion is of vital importance.

This Special Issue focuses on advanced materials and thin films for electrical energy storage. Submissions (e.g., original research, reviews, and mini reviews) can include, but are not limited to, the following research areas:

(1). Design, development, and evaluation of advanced materials for electrochemical energy storage and conversion.

(2). Thin film supercapacitors, batteries, microsupercapacitors, and/or microbatteries.

(3). Synthetic and natural characterization of advanced energy storage materials.

Prof. Dr. Hongpeng Li
Prof. Dr. Dong Sui
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at mdpi.longhoe.net 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. Coatings is an international peer-reviewed open access monthly 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

  • advanced energy storage materials
  • carbon materials
  • transition metal oxides or nitrides, conductive polymers
  • thin films
  • supercapacitors
  • batteries

Published Papers (2 papers)

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Research

9 pages, 2768 KiB  
Article
Exciton-Assisted UV Stimulated Emission with Incoherent Feedback in Polydisperse Crystalline ZnO Powder
by Leonid Fedorenko, Volodymyr Litovchenko, Vadym Naumov, Dmytro Korbutyak, Volodymyr Yukhymchuk, Olexander Gudymenko, Olexander Dubikovskyi, Hidenori Mimura and Arturs Medvids
Coatings 2022, 12(11), 1705; https://doi.org/10.3390/coatings12111705 - 9 Nov 2022
Cited by 4 | Viewed by 1304
Abstract
A comparative analysis of the features of UV-stimulated emission (SE) of various disordered active materials based on ZnO crystallites for a random laser (RL) was carried out. The superlinear increase in the intensity of the UV photoluminescence (PL) band of polydisperse nano-micro-crystalline (PNMC) [...] Read more.
A comparative analysis of the features of UV-stimulated emission (SE) of various disordered active materials based on ZnO crystallites for a random laser (RL) was carried out. The superlinear increase in the intensity of the UV photoluminescence (PL) band of polydisperse nano-micro-crystalline (PNMC) ZnO powder at a wavelength of λ = 387 nm and some narrowing of its halfwidth in the range of 20 ÷ 15 nm with increasing pump intensity indicates random lasing with incoherent feedback (FB). The properties of similar UV PL bands under the same conditions of a thin film containing hexagonal ZnO microdisks, as well as samples of monodisperse ZnO nanopowder with nanoparticle sizes of 100 nm, indicate stimulated radiation with coherent feedback. It is shown that, among the studied materials, PNMC ZnO powder with widely dispersed crystallites ranges in size from 50 nm to several microns, which in turn, consists of nanograins with dimensions of ~25 nm, is the most suitable for creating a random laser with incoherent feedback at room temperature. The dominant factor of UV SE in PNMC ZnO powder is radiation transitions under exciton–exciton scattering conditions. The possible mechanisms of this random emission with the continuous spectrum are discussed. The average optical gain coefficient αg at λ = 387 nm in this RL system is estimated as αg~150 cm−1. Full article
(This article belongs to the Special Issue Advanced Materials and Thin Films for Electrical Energy Storage)
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10 pages, 15375 KiB  
Article
Cationic Covalent Organic Framework as Separator Coating for High-Performance Lithium Selenium Disulfide Batteries
by Jun Wang, **g-** Ke, Zhen-Yi Wu, **ao-Na Zhong, Song-Bai Zheng, Yong-Jun Li and Wen-Hua Zhao
Coatings 2022, 12(7), 931; https://doi.org/10.3390/coatings12070931 - 30 Jun 2022
Cited by 29 | Viewed by 1888
Abstract
Selenium disulfide that combines the advantages of S and Se elements is a new material for Li-chalcogen battery cathodes. However, like Li-S batteries, the shuttle effect seriously restricts the performance of Li-SeS2 batteries. In this work, we have synthesized a kind of [...] Read more.
Selenium disulfide that combines the advantages of S and Se elements is a new material for Li-chalcogen battery cathodes. However, like Li-S batteries, the shuttle effect seriously restricts the performance of Li-SeS2 batteries. In this work, we have synthesized a kind of nitrogen-rich lithophilic covalent organic framework (ATG-DMTZ-COF) as a separator coating material for Li-SeS2 batteries. Here, the N atom in the ATG-DMTZ-COF channel preferentially interacts with the lithium ion in the electrolyte to form N…Li bond, which significantly improves the diffusion coefficient of lithium ions during the charge and discharge. More importantly, we prove that the pore size of ATG-DMTZ-COF will decrease sharply because there is a large amount of TFSI- in the channel, and finally the shuttling of polysulfide and polyselenide is suppressed by the sieving effect. As a consequence, Li-SeS2 batteries using the ATG-DMTZ-COF separator coating show excellent performances with an initial discharge capacity of 1028.7 mAh g−1 at 0.5 C under a SeS2 loading of 2.38 mg cm−2. Furthermore, when the current density is 1C, the specific capacity of 404.7 mAh g−1 can be maintained after 700 cycles. Full article
(This article belongs to the Special Issue Advanced Materials and Thin Films for Electrical Energy Storage)
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