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Crystals
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Advanced Dielectric Materials for Capacitor Application
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Advanced Dielectric Materials for Capacitor Application

A special issue of Crystals (ISSN 2073-4352). This special issue belongs to the section "Polycrystalline Ceramics".

Deadline for manuscript submissions: closed (10 February 2024) | Viewed by 6048

Special Issue Editor

Prof. Dr. Hua Hao

E-Mail Website
Guest Editor
State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, School of Material Science and Engineering, Wuhan University of Technology, Wuhan 430070, China
Interests: Electronic functional ceramics

Special Issue Information

Dear Colleagues,

Dielectric capacitors with the advantages of a rapid charging–discharging speed, a high power density, a long cycle life and high-temperature stability play an indispensable role in many fields, such as electronic and electrical industries and solid-state pulse power applications. High-performance dielectric materials are urgently needed in order to fulfil the requirements of advanced electric power systems, and their electric properties are closely related to their chemical composition and microstructure when determining their polarization and breakdown behavior. Therefore, designing novel dielectric materials or exploring new phenomena in dielectric materials for capacitor application should be emphasized.

In this Special Issue, we aim to report the latest advances in high-performance capacitors and provide insights into the future directions in this field. This scope of this Special Issue includes—but is not limited to—the following areas:

  • Dielectric energy storage materials/devices: ceramics, organic/inorganic films, composites, and multilayer ceramic capacitors (MLCC).
  • Microstructure characterizations, including defects, the domain, interface, and grain morphology, etc.
  • New physic phenomena induced by composition, AC/DC voltage, temperature, and frequency, and corresponding theory analysis.
  • Electrical properties’ stability and mechanism analysis in multi-physics fields (high temperature, high voltage, long-cycle number).

Prof. Dr. Hua Hao
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. Crystals 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 2100 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

  • ferroelectric
  • antiferroelectric
  • ceramic
  • thin film
  • MLCC, energy storage and conversion

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Published Papers (2 papers)

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Research

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11 pages, 4796 KiB  
Article
The Influence of BaTiO3 Content on the Energy Storage Properties of Bi0.5Na0.5TiO3-Bi(Mg2/3Nb1/3)O3 Lead-Free Ceramics
by Zhuo Li, Dandan Zhang, Chenbo Wang, Jiayong Zhang, Zixuan Wang, Zhuo Wang, Xin Yan, Tao Ai, Dawei Wang, Zhilun Lu and Yanhui Niu
Crystals 2023, 13(5), 733; https://doi.org/10.3390/cryst13050733 - 27 Apr 2023
Cited by 5 | Viewed by 1899
Abstract
Na0.5Bi0.5TiO3 (NBT)-based ceramics are promising lead-free candidates for energy-storage applications due to their outstanding dielectric and ferroelectric properties derived from large polarization. However, the high coercive field and large remnant polarization are unfavorable for practical applications, and thus [...] Read more.
Na0.5Bi0.5TiO3 (NBT)-based ceramics are promising lead-free candidates for energy-storage applications due to their outstanding dielectric and ferroelectric properties derived from large polarization. However, the high coercive field and large remnant polarization are unfavorable for practical applications, and thus NBT-based ceramics with relaxation behavior via doping/forming solid solutions with other elements/components have been widely studied. In this work, BaTiO3 (BT) was introduced to the 0.94Na0.5Bi0.5TiO3-0.06Bi(Mg2/3Nb1/3)O3 system by a conventional solid-state reaction to form a homogeneous solid solution of 0.94[(1−x)Na0.5Bi0.51TiO3-xBaTiO3]-0.06Bi(Mg2/3Nb1/3)O3 (BNT-100xBT-BMN). As the BT content increased, the proportion of the rhombohedral R3c phase increased while that of the tetragonal P4bm phase decreased, leading to the maximum Pmax (38.29 μC/cm2) and Eb (80 kV/cm) obtained in BNT-7BT-BMN (x = 0.07) composition. Specifically, the optimal energy storage properties of Wrec ~ 1.02 J/cm3 and η ~ 62.91% under 80 kV/cm were obtained in BNT-7BT-BMN ceramics, along with good temperature stability up to 200 °C, which are promising factors for future pulse power applications. Full article
(This article belongs to the Special Issue Advanced Dielectric Materials for Capacitor Application)
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Review

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15 pages, 2255 KiB  
Review
A Brief Review of Sodium Bismuth Titanate-Based Lead-Free Materials for Energy Storage: Solid Solution Modification, Metal/metallic Oxide Doping, Defect Engineering and Process Optimizing
by Zhuo Li, Qiangbin Yang, Chenbo Wang, Jiayong Zhang, Zixuan Wang, Boyang Gao, Zhe Li, Zhuo Wang, Xin Yan, Tao Ai, Dawei Wang and Yanhui Niu
Crystals 2023, 13(2), 295; https://doi.org/10.3390/cryst13020295 - 9 Feb 2023
Cited by 6 | Viewed by 3688
Abstract
With the ever-increasing demand for energy, research on energy storage materials is imperative. Thereinto, dielectric materials are regarded as one of the potential candidates for application in advanced pulsed capacitors by reason of their ultrahigh energy-storage density, low energy loss, and good thermal [...] Read more.
With the ever-increasing demand for energy, research on energy storage materials is imperative. Thereinto, dielectric materials are regarded as one of the potential candidates for application in advanced pulsed capacitors by reason of their ultrahigh energy-storage density, low energy loss, and good thermal stability. Among the numerous dielectric materials for energy storage, sodium bismuth titanate (Bi0.5Na0.5TiO3, BNT) with high saturation polarization, as one of the successful alternatives to lead-based materials, has been extensively studied. However, degraded dielectric and ferroelectric properties as a consequence of chemical alterations usually produced by inhomogeneity in microstructure and composition due to the ion volatilization during preparing, thus affecting performance of devices. Hence, this review served to encompass the current state and progress on the optimization of energy storage performance in lead-free BNT-based materials over the past few years, including ceramics, multilayer ceramics, thin films, and thick films, involved in solid solution modification, metal/metallic oxide doping, process optimization and other related aspects to optimize energy storage performance. Furthermore, some prospective approach in the improvement of energy storage performance for BNT-based materials were also provided in this work according to the existing theoretical and experimental results, to impel their practical application. Full article
(This article belongs to the Special Issue Advanced Dielectric Materials for Capacitor Application)
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