Submit to Special Issue Submit Abstract to Special Issue Review for Coatings Propose a Special Issue

Journal Menu

Journal Browser

High-Performance Dielectric Ceramic for Energy Storage Capacitors

Print Special Issue Flyer
Special Issue Editors
Special Issue Information
Benefits of Publishing in a Special Issue
Published Papers

A special issue of Coatings (ISSN 2079-6412). This special issue belongs to the section "Ceramic Coatings and Engineering Technology".

Deadline for manuscript submissions: 20 August 2024 | Viewed by 15563

Share This Special Issue

Special Issue Editor

Prof. Dr. Jing Wang

E-Mail Website
Guest Editor

College of Chemistry and Environmental Science, Hebei University, Baoding 071000, China
Interests: ferroelectric and antiferroelectric ceramics

Special Issue Information

Dear Colleagues,

We are pleased to invite you to submit your work to this Special Issue “High-Performance Dielectric Ceramic for Energy Storage Capacitors”.

Dielectric ceramics with high permittivity and high breakdown strength are required for applications, including high charge capacitors and energy storage devices, where dielectric composites could find their position as potential candidates. As one important part of the family, dielectric ceramics for energy storage capacitors are widely used in both civil and military applications, especially suitable for pulsed power capacitors due to their high power densities and fast discharge rates. With the increasing demand for lightweight, miniaturized, and compact electronic devices, research on dielectric materials with high energy storage performance has attracted increasing attention.

This Special Issue aims to discuss and present significant new findings related to synthesis, fabrication, structure, properties, performance, and technological application, in addition to the strategies and policies of dielectric ceramics for energy storage capacitors and their devices for sustainable energy and development. Papers which have high scientific and technological merit, impart important new knowledge, and are of high interest to the international community will be published.

In this Special Issue, original research articles and reviews are welcome. Research areas may include (but not be limited to) the following:

Ceramic powders
Composite ceramic materials
Dielectric ceramic films
Glass ceramics
Ceramic–polymer dielectric materials
Special structures of dielectric materials
Interface effects of dielectrics
Characterization techniques for ceramics

We look forward to receiving your contributions.

Prof. Dr. Jing Wang
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. 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.

Benefits of Publishing in a Special Issue

Ease of navigation: Grouping papers by topic helps scholars navigate broad scope journals more efficiently.
Greater discoverability: Special Issues support the reach and impact of scientific research. Articles in Special Issues are more discoverable and cited more frequently.
Expansion of research network: Special Issues facilitate connections among authors, fostering scientific collaborations.
External promotion: Articles in Special Issues are often promoted through the journal's social media, increasing their visibility.
e-Book format: Special Issues with more than 10 articles can be published as dedicated e-books, ensuring wide and rapid dissemination.

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

Published Papers (11 papers)

Download All Papers

Order results

Result details

Show export options Show export options

Select all

Export citation of selected articles as:

Editorial

Jump to: Research

4 pages, 186 KiB

Open AccessEditorial

High-Performance Dielectric Ceramic for Energy Storage Capacitors

by Jing Wang

Coatings 2022, 12(7), 889; https://doi.org/10.3390/coatings12070889 - 23 Jun 2022

Cited by 3 | Viewed by 1843

Abstract

In recent years, due to the depletion of fossil fuels, air pollution, carbon emissions, and other issues, it has become urgent to seek the development of renewable, non-polluting, and clean energy [...] Full article

(This article belongs to the Special Issue High-Performance Dielectric Ceramic for Energy Storage Capacitors)

Research

Jump to: Editorial

11 pages, 5412 KiB

Open AccessArticle

Defect Control of Donor Doping on Dielectric Ceramics to Improve the Colossal Permittivity and Temperature Stability

by Wei Wang, Tingting Fan, Songxiang Hu, Jinli Zhang, Xuefeng Zou, Ying Yang, Zhanming Dou, Lin Zhou, Jun Hu, Jing Wang and Shenglin Jiang

Coatings 2024, 14(8), 1024; https://doi.org/10.3390/coatings14081024 - 12 Aug 2024

Viewed by 324

Abstract

As the demand for miniaturization of electronic devices increases, ceramics with an ABO₃ structure require further improvement of the dielectric constant with high permittivity. In the present work, Ba_1−1.5xBi_xTiO₃ (BB100xT, x = 0.0025, 0.005, 0.0075, 0.01) ceramics were prepared via a solid-state reaction process. The effect of Bi doping on dielectric properties of lead-free relaxor ferroelectric BaTiO₃-based ceramics was studied. The results showed that both colossal permittivity (37,174) and a temperature stability of TCC ≤ ±15% (−27–141 °C) were achieved in BB100xT ceramics at x = 0.5%. The A-site donor doping produces A-site vacancies, a larger space for Ti⁴⁺, and fluctuation of the component, which is partially responsible for the high permittivity and responsible for the temperature stability. Meanwhile, the contribution of defect dipoles, and IBLC and SBLC effects to polarization leads to the colossal permittivity. The formation of a liquid phase during sintering promotes mass transfer when the doping content is higher than 0.5%. This work benefits the exploration of novel multilayer ceramic capacitors with colossal permittivity and temperature stability via defect engineering. Full article

(This article belongs to the Special Issue High-Performance Dielectric Ceramic for Energy Storage Capacitors)

► Show Figures

Figure 1

11 pages, 6985 KiB

Open AccessArticle

Effects of Substrates on the Electrical Performance of PbZr_0.52Ti_0.48O₃ Films

by Zhi Wu, Yifei Liu, Jing Zhou, Pengcheng Jiang, Xin Xiong, Huidong Tang, Yuxi Long, Jingdan Yan and Yun Wang

Coatings 2024, 14(8), 940; https://doi.org/10.3390/coatings14080940 - 26 Jul 2024

Viewed by 398

Abstract

Flexible PbZr_0.52Ti_0.48O₃ (PZT) films have a wide application prospect in wearable devices. In this work, PZT films were fabricated on LaNiO₃–based Si substrates and mica substrates, respectively. The effects of Si substrates and mica substrates on the dielectric and ferroelectric properties of PZT films were studied. The stability of PZT films on different substrates was discussed by controlling temperature and frequency. The optimal annealing temperature for preparing PZT films on LaNiO₃–based Si substrates and mica substrates is 750 °C. The dielectric and ferroelectric properties of PZT films vary with the substrates. The diffraction peak of PZT films deposited on mica substrates shifted to the left compared with that deposited on Si substrates, due to difference of the expansion coefficients. The as–prepared PZT films exhibit a good ferroelectric property at a frequency in the range of 100 Hz~1000 Hz. Moreover, PZT films deposited on mica substrates have larger remanent polarization values and coercive fields than PZT films deposited on Si substrates. With the elevation in temperature, the dielectric constant of PZT films gradually enhance. And as–prepared PZT films at an annealing temperature of 750 °C have a better dielectric temperature stability. PZT films grown on Si substrates exhibit more excellent dielectric temperature stability than that of PZT films grown on mica substrates. Full article

(This article belongs to the Special Issue High-Performance Dielectric Ceramic for Energy Storage Capacitors)

► Show Figures

Figure 1

8 pages, 2147 KiB

Open AccessCommunication

Energy Storage Performance of (Na_0.5Bi_0.5)TiO₃ Relaxor Ferroelectric Film

by Xuxia Liu, Yao Yao, Xiaofei Wang, Lei Zhao and Xingyuan San

Coatings 2024, 14(7), 801; https://doi.org/10.3390/coatings14070801 - 27 Jun 2024

Viewed by 552

Abstract

The (Na_0.5Bi_0.5)TiO₃ relaxor ferroelectric materials have great potential in high energy storage capacitors due to their small hysteresis, low remanent polarization and high breakdown electric field. In this work, (Na_0.5Bi_0.5)TiO₃ thin films with ~400 nm were prepared on (001) SrTiO₃ substrate by pulsed laser deposition technology. The (Na_0.5Bi_0.5)TiO₃ films have good crystallization quality with a dense microstructure and relaxor ferroelectric properties, as confirmed by the elongated hysteresis loops and the relation of <A>∝E^α. A high E_b of up to 1400 kV/cm is obtained, which contributes to a good W_rec of 24.6 J/cm³ and η of 72% in (Na_0.5Bi_0.5)TiO₃ film. In addition, the variations of W_rec and η are less than 4% and 10% in the temperature range of 20–120°C. In the frequency range of 10³ Hz–2 × 10⁴ Hz, the variations of W_rec and η are less than 10%. All those reveal the great potential of NBT film for energy storage. Full article

(This article belongs to the Special Issue High-Performance Dielectric Ceramic for Energy Storage Capacitors)

► Show Figures

Figure 1

13 pages, 2634 KiB

Open AccessArticle

First-Principles Investigation of Point Defects on the Thermal Conductivity and Mechanical Properties of Aluminum at Room Temperature

by Touwen Fan, Zixiong Ruan, Baohua Nie, Yikai Liao, Bowen Huang, Zimeng Xu, Yuanzhi Wu, Te Hu and Dongchu Chen

Coatings 2023, 13(8), 1357; https://doi.org/10.3390/coatings13081357 - 2 Aug 2023

Cited by 1 | Viewed by 1203

Abstract

The effects of point defects on the mechanical and thermal conductivity of aluminum at room temperature have been investigated based on the first-principles calculations combined with the Boltzmann equation and the Debye model. The calculated results showed the equilibrium lattice constants a₀ of all RE_Al are larger than that of Al, and the defective formation energy E_f of all RE_Al is lower than that of V_Al. Both a₀ and E_f increase from Sc to La and then decrease linearly to Lu. The effects of solute atoms on the mechanical properties of the Al matrix were further calculated, and compared with Al, it is found that the RE_Al defects decrease the elastic constant C_ij, Cauchy pressure C₁₂–C₄₄, bulk modulus B, shear modulus G, Young’s modulus E, B/G and Poisson’s ratio ν of Al, except for C₄₄ of RE_Al (RE = La-Nd). With the increase of atomic number, the C₁₁ and E of Al-containing RE_Al decrease from Sc to La and then slowly increase to Lu, whereas C₁₂, C_44, B, and G have little change. Meanwhile, the values of C₁₂–C₄₄ and B/G of Al-containing RE_Al increase from Sc to Ce, and it slightly change after Ce, while ν is nearly unchanged. All defects containing Al present nonuniform and ductility. Finally, the effects of rare earth (RE) atoms on the thermal conductivity (TC) of Al alloys have been investigated based on the first-principles calculations. The reduction of TC of Al alloys by RE solute atoms RE_Al is much greater than that by the L1₂ Al₃RE phase with the same concentration of RE, which is in good agreement with the experiments. With the RE atomic number increasing, the total TC κ of the Al-RE solid solution decreases from Sc to La firstly and then increases linearly to Lu. Moreover, the decrement of TC Δκ of the Al matrix by early RE_Al (RE = La-Sm) is larger than that by V_Al, while the later RE_Al (RE = Gd-Lu) shows the opposite influence. Full article

(This article belongs to the Special Issue High-Performance Dielectric Ceramic for Energy Storage Capacitors)

► Show Figures

Figure 1

12 pages, 2749 KiB

Open AccessArticle

Improvement of Piezoelectricity of (Bi_0.5Na_0.5)_0.94Ba_0.06TiO₃ Ceramics Modified by a Combination of Porosity and Sm³⁺ Doping

by Siyu Xia, Huiling Du, Zhuo Li, Fan Zhao, Qianqian Li, Yuxuan Hu and Le Kang

Coatings 2023, 13(4), 805; https://doi.org/10.3390/coatings13040805 - 21 Apr 2023

Cited by 4 | Viewed by 1744

Abstract

Porous lead-free piezoelectric ceramics are characterized by their environment-friendly, light weight, and large specific surface area. The optimization of porous Na_0.5Bi_0.5TiO₃-based lead-free piezoelectric ceramics can improve piezoelectric properties, enhance force–electric coupling characteristics, and effectively promote energy conversion, expanding the application in force-electric coupling devices. This study aimed to prepare [Sm_x(Bi_0.5Na_0.5)_1−3x/2]_0.94Ba_0.06TiO₃ (x = 0, 0.01, 0.02, 0.03, 0.04) lead-free ceramics with porous structures, resulting in the piezoelectric constant d₃₃ = 131 pC/N and the plane electromechanical coupling coefficient k_p = 0.213 at x = 0.01. The presence of pores in lead-free ceramics has a direct impact on the domain structure and can cause the depolarization process to relax. Then, the soft doping of Sm³⁺ makes the A-site ion in porous (Bi_0.5Na_0.5)_0.94Ba_0.06TiO₃ ceramics occupancy inhomogeneous and generates cation vacancies, which induces lattice distortion and makes the domain wall motion easier, resulting in the improvement of piezoelectric properties and electromechanical coupling parameters. Furthermore, the piezoelectric oscillator exhibits greater resistance to resonant coupling in the radial extension vibration mode. These results infer that a combination of porosity and Sm³⁺ doping renders (Bi_0.5Na_0.5)_0.94Ba_0.06TiO₃ ceramics base material for piezoelectric resonators, providing a scientific basis for their application in force–electric coupling devices, such as piezoelectric resonant gas sensors. Full article

(This article belongs to the Special Issue High-Performance Dielectric Ceramic for Energy Storage Capacitors)

► Show Figures

Figure 1

13 pages, 2381 KiB

Open AccessArticle

Enhanced Energy Storage Performance of AgNbO₃:xCeO₂ by Synergistic Strategies of Tolerance Factor and Density Regulations

by Ke An, Gang Li, Tingting Fan, Feng Huang, Wenlin Wang and Jing Wang

Coatings 2023, 13(3), 534; https://doi.org/10.3390/coatings13030534 - 28 Feb 2023

Cited by 2 | Viewed by 1274

Abstract

AgNbO₃-based ceramics have been widely studied as ideal lead-free materials. Herein, AgNbO₃:xCeO₂ (x = 0, 1, 2 mol%) ceramics were successfully prepared by the conventional solid-state reaction method. The optimization of energy storage properties is ascribed to the enhanced antiferroelectric (AFE) stability and the increased breakdown strength (E_b). The reduction of the tolerance factor leads to the enhancement of AFE stability. In addition, the enhancement of E_b is due to the increase of actual density, which is achieved through the regulation of CeO₂ amount and grinding procedure in the experimental process. A high recoverable energy density (W_rec) of 5.04 J/cm³ and an energy efficiency (η) of 46.2% were achieved in AgNbO_3:0.01CeO₂ ceramics under an applied electric field up to 390 kV/cm. A higher η of 55.4% was obtained in AgNbO₃:0.02CeO₂ components. This research provides guidance for finding ceramic materials with comprehensive energy storage properties. Full article

(This article belongs to the Special Issue High-Performance Dielectric Ceramic for Energy Storage Capacitors)

► Show Figures

Figure 1

15 pages, 12406 KiB

Open AccessArticle

Metastable Phase Formation, Microstructure, and Dielectric Properties in Plasma-Sprayed Alumina Ceramic Coatings

by Paul Junge, Moritz Greinacher, Delf Kober, Patrick Stargardt and Christian Rupprecht

Coatings 2022, 12(12), 1847; https://doi.org/10.3390/coatings12121847 - 29 Nov 2022

Cited by 8 | Viewed by 2143

Abstract

The need for new solutions for electrical insulation is growing due to the increased electrification in numerous industrial sectors, opening the door for innovation. Plasma spraying is a fast and efficient way to deposit various ceramics as electrical insulators, which are used in [...] Read more.

_{2}

_{3}

) is among the most employed ceramics in the coating industry since it exhibits good dielectric properties, high hardness, and high melting point, while still being cost-effective. Various parameters (e.g., feedstock type, spray distance, plasma power) significantly influence the resulting coating in terms of microstructure, porosity, and metastable phase formation. Consequently, these parameters need to be investigated to estimate the impact on the dielectric properties of plasma-sprayed alumina coatings. In this work, alumina coatings with different spray distances have been prepared via atmospheric plasma spray (APS) on copper substrates. The microstructure, porosity, and corresponding phase formation have been analyzed with optical microscopy, X-ray diffraction (XRD), and scanning electron microscopy (SEM). Moreover, we present an in-depth analysis of the fundamental dielectric properties e.g., direct current (DC) resistance, breakdown strength, dielectric loss tangent, and permittivity. Our results show that decreasing spray distance reduces the resistivity from 6.31 ×

10^{9}

Ω

m (130 mm) to 6.33 ×

10^{8}

Ω

m (70 mm), while at the same time enhances the formation of the metastable

δ

-Al

_{2}

_{3}

phase. Furthermore, space charge polarization is determined as the main polarization mechanism at low frequencies. Full article

(This article belongs to the Special Issue High-Performance Dielectric Ceramic for Energy Storage Capacitors)

► Show Figures

Graphical abstract

9 pages, 1761 KiB

Open AccessArticle

Dielectric and Antiferroelectric Properties of AgNbO₃ Films Deposited on Different Electrodes

by Qingzhu Ma, Xiang Li, Yanle Zhang, Zhijin Duo, Suwei Zhang and Lei Zhao

Coatings 2022, 12(12), 1826; https://doi.org/10.3390/coatings12121826 - 25 Nov 2022

Cited by 2 | Viewed by 1585

Abstract

AgNbO₃ antiferroelectric materials have become a hot topic due to their typical double polarization–electric field loops. AgNbO₃ films usually exhibit superior properties to bulks. In this work, AgNbO₃ films were fabricated via the pulsed laser deposition on (001) SrTiO₃ substrate with (La_0.5Sr_0.5)CoO₃, LaNiO₃ and SrRuO₃ bottom electrodes, in which the (La_0.5Sr_0.5)CoO₃, LaNiO₃ and SrRuO₃ bottom electrodes were used to regulate the in-plane compressive stress of AgNbO₃ films. It is found that AgNbO₃ films deposited on (La_0.5Sr_0.5)CoO₃, LaNiO₃ and SrRuO₃ bottom electrodes are epitaxial with dense microstructure. In changing the bottom electrodes from (La_0.5Sr_0.5)CoO₃, LaNiO₃ to SrRuO₃, the in-plane compressive stress of AgNbO₃ thin films becomes weaker, which leads to increased relative dielectric permittivity and reduced antiferroelectric–ferroelectric phase transition electric field E_F from 272 kV/cm to 190 kV/cm. The reduced E_F implies weakened antiferroelectric stability in AgNbO₃ films. It can be seen that the antiferroelectric stability of AgNbO₃ films could be regulated by changing the bottom electrodes. Full article

(This article belongs to the Special Issue High-Performance Dielectric Ceramic for Energy Storage Capacitors)

► Show Figures

Figure 1

11 pages, 3489 KiB

Open AccessArticle

Facile Hydrothermal Synthesis of Binder-Free Hexagonal MnO₂ Nanoparticles for a High-Performance Supercapacitor’s Electrode Material

by Qasim Abbas, Lianghua Wen, Abdul Mateen, Najam Ul Hassan, Asim Idrees, Zia Ur Rehman, Majed A. Bajaber and Muhammad Sufyan Javed

Coatings 2022, 12(8), 1101; https://doi.org/10.3390/coatings12081101 - 3 Aug 2022

Cited by 1 | Viewed by 2159

Abstract

Manganese dioxide (MnO₂)-based nanostructures are promising electrode materials for supercapacitors (SCs) due to their low cost, eco-friendly nature, and high theoretical capacitance. However, the conductivity of MnO₂ is poor, which is a big problem when trying to achieve the desired capacitance value. Herein, hexagonal-phase MnO₂ nanoparticles (NPs) are directly grown on a 3D conductive carbon cloth (CC) (denoted as MnO₂-NPs@CC) as a binder-free electrode through a simple and scalable hydrothermal strategy. The results show that MnO₂-NPs@CC with a large specific surface area and high porosity could be employed as a positive electrode material for high-performance SCs. Owing to these attractive properties, the MnO₂-NPs@CC electrode delivers a high specific capacitance of 660 F/g at a current density of 2 A/g in 6 M KOH aqueous electrolytes. Moreover, the MnO₂-NPs@CC electrode demonstrates excellent cycling stability with high capacitance retention of 92.8% over 10,000 cycles. Such remarkable findings suggest that MnO₂-NPs@CC with enhanced electrochemical performance is a favorable electrode material for next-generation high-performance SCs. Full article

(This article belongs to the Special Issue High-Performance Dielectric Ceramic for Energy Storage Capacitors)

► Show Figures

Figure 1

17 pages, 5525 KiB

Open AccessArticle

Dielectric Properties of Plasma-Sprayed Fully Natural Garnets

by Pavel Ctibor, Josef Sedláček and Libor Straka

Coatings 2022, 12(7), 1017; https://doi.org/10.3390/coatings12071017 - 18 Jul 2022

Cited by 1 | Viewed by 1414

Abstract

Various kinds of natural garnets belonging to the almandine type (3FeO·Al₂O₃·3SiO₂) were sprayed by plasma spray technique to build coatings on metallic substrates. The experimental garnet powders came from different mines in the Czech Republic and Mongolia. After coating and cooling the substrates were removed. In this way, self-supporting plates were obtained and further studied with microscopy, X-ray diffraction, and dielectric spectroscopy. Mechanical properties were in our focus as well. Microhardness was measured on cross sections dedicated to microstructure observation. Wear resistance in wet conditions was tested in a slurry. Reflectance was measured applying visible and infrared (VIS-NIR) radiation. Dielectric properties of coatings were studied at low voltage capacitance, loss tangent and also under direct current (DC) resistance. The results show that garnet minerals are interesting candidates for various optical and electronic applications; they have similar dielectric behavior as, for example, aluminum oxide or similar high-purity synthetic oxides, and, simultaneously, they have extraordinarily low reflectance in VIS-NIR radiation. The differences between natural powders and resulting coatings are discussed in connection with their chemical and phase compositions. Full article

(This article belongs to the Special Issue High-Performance Dielectric Ceramic for Energy Storage Capacitors)

► Show Figures

Journal Menu

Journal Browser

High-Performance Dielectric Ceramic for Energy Storage Capacitors

Share This Special Issue

Special Issue Editor

Special Issue Information

Benefits of Publishing in a Special Issue

Published Papers (11 papers)

Editorial

Research

Further Information

Guidelines

MDPI Initiatives

Follow MDPI