Research and Applications of Thin Films and Energy Materials

A special issue of Crystals (ISSN 2073-4352). This special issue belongs to the section "Materials for Energy Applications".

Deadline for manuscript submissions: 10 September 2025 | Viewed by 1566

Special Issue Editors


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Guest Editor
School of Chemical Engineering, Yeungnam University, 280 Daehak-ro, Gyeongsan 712-749, Republic of Korea
Interests: thin film; electrochromism; supercapacitors; hydrogen production; photoelectrochemical processes

E-Mail Website
Guest Editor
School of Chemical Engineering, Yeungnam University, 280 Daehak-ro, Gyeongsan 712-749, Republic of Korea
Interests: thin film; electrochromism; supercapacitors; hydrogen production; photoelectrochemical processes

Special Issue Information

Dear Colleagues,

This Special Issue is dedicated to the cutting-edge research and applications of thin films and energy materials, with a particular emphasis on the synthesis, characterization, and performance optimization of these materials in targeted energy-related applications. We aim to explore the specific area of thin film technology and energy materials, including the coating of the cathode oxide in lithium-ion batteries.

The unique properties and tunable characteristics of thin films are pivotal in energy storage, conversion, and electrochromic applications. This Special Issue will explore the latest research on novel materials, including metal oxides, 2D materials, and composite films, with a focus on the crystal synthesis based on structure–preparation–property relationship, and how these materials can be optimized for use in supercapacitors, batteries, and smart windows.

For this Special Issue, we welcome papers and review articles on innovative synthesis techniques, surface and interface engineering, structural and electrochemical performance, and the environmental stability of energy materials.

Prof. Dr. Chanwook Jeon
Dr. Pritam J. Morankar
Guest Editors

Manuscript Submission Information

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Keywords

  • thin films
  • energy materials
  • electrochromic materials
  • supercapacitors
  • battery materials
  • 2D materials
  • metal oxides
  • composite materials
  • surface engineering
  • energy conversion
  • energy storage

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Published Papers (1 paper)

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Research

16 pages, 5342 KiB  
Article
Effect of Annealing Temperature on Morphology and Electrochromic Performance of Electrodeposited WO₃ Thin Films
by Pritam J. Morankar, Rutuja U. Amate, Manesh A. Yewale and Chan-Wook Jeon
Crystals 2024, 14(12), 1038; https://doi.org/10.3390/cryst14121038 - 28 Nov 2024
Cited by 1 | Viewed by 1364
Abstract
The purpose of this study was to investigate the effect of annealing temperature on the structural, morphological, and electrochemical properties of tungsten trioxide (WO3) films, fabricated via electrodeposition and annealed at 50 °C, 250 °C, and 450 °C. Structural analysis using [...] Read more.
The purpose of this study was to investigate the effect of annealing temperature on the structural, morphological, and electrochemical properties of tungsten trioxide (WO3) films, fabricated via electrodeposition and annealed at 50 °C, 250 °C, and 450 °C. Structural analysis using X-ray diffraction (XRD) revealed temperature-induced modifications, transitioning from amorphous to crystalline phases. Morphological studies by field emission scanning electron microscopy (FESEM) demonstrated an increase in grain size with temperature (31 nm, 48 nm, and 53 nm) and the formation of cracks at higher annealing temperatures. Electrochemical characterization showed that the WO3 film annealed at 250 °C exhibited superior redox activity, enhanced ion diffusion, and excellent reversibility. Optical studies highlighted its exceptional performance, with 79.35% optical modulation, a coloration efficiency of 97.91 cm2/C, and rapid switching times (9.8 s for coloration and 7.5 s for bleaching). Furthermore, long-term cycling tests confirmed minimal degradation after 5000 cycles, demonstrating durability. This work provides a comprehensive understanding of the annealing temperature’s impact on WO3 films and underscores the novelty of achieving optimal electrochromic (EC) performance through temperature tuning, advancing the design of energy-efficient smart materials. Full article
(This article belongs to the Special Issue Research and Applications of Thin Films and Energy Materials)
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