Crystallization behavior and dielectric properties of K2O–SrO–Nb2O5–B2O3–Al2O3–SiO2 glass-ceramic for energy storage

Shi, Xiao Ming; Xiu, Shaomei; Xue, Songbai; Shen, Bo; Zhai, Jiwei

doi:10.1016/j.jallcom.2015.07.047

Cited by 19 publications

(3 citation statements)

References 22 publications

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“…With increasing crystallization temperature from 850 to 1000 °C, the BDS decreased from 1890 to 1440 kV cm –1 and the crystallinity increased from 64.5 to 97.3% (Figure b). Similar results were also reported in other glass ceramic systems, including Na 2 O–PbO–Nb 2 O 5 –SiO 2 , SrO–BaO–Nb 2 O 5 –B 2 O 3 , K 2 O–SrO–Nb 2 O 5 –SiO 2 –Al 2 O 3 –B 2 O 3 , BaO–Na 2 O–Nb 2 O 5 –SiO 2 –Al 2 O 3 , BaO–PbO–Na 2 O–Nb 2 O 5 –SiO 2 , SrO–Na 2 O–Nb 2 O 5 –SiO 2 , and Bi 2 O 3 –Nb 2 O 5 –SiO 2 –Al 2 O 3 …”

Section: State-of-the-art In Electroceramics For Energy Storagesupporting

confidence: 89%

Electroceramics for High-Energy Density Capacitors: Current Status and Future Perspectives

et al. 2021

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Materials exhibiting high energy/power density are currently needed to meet the growing demand of portable electronics, electric vehicles and large-scale energy storage devices. The highest energy densities are achieved for fuel cells, batteries, and supercapacitors, but conventional dielectric capacitors are receiving increased attention for pulsed power applications due to their high power density and their fast charge–discharge speed. The key to high energy density in dielectric capacitors is a large maximum but small remanent (zero in the case of linear dielectrics) polarization and a high electric breakdown strength. Polymer dielectric capacitors offer high power/energy density for applications at room temperature, but above 100 °C they are unreliable and suffer from dielectric breakdown. For high-temperature applications, therefore, dielectric ceramics are the only feasible alternative. Lead-based ceramics such as La-doped lead zirconate titanate exhibit good energy storage properties, but their toxicity raises concern over their use in consumer applications, where capacitors are exclusively lead free. Lead-free compositions with superior power density are thus required. In this paper, we introduce the fundamental principles of energy storage in dielectrics. We discuss key factors to improve energy storage properties such as the control of local structure, phase assemblage, dielectric layer thickness, microstructure, conductivity, and electrical homogeneity through the choice of base systems, dopants, and alloying additions, followed by a comprehensive review of the state-of-the-art. Finally, we comment on the future requirements for new materials in high power/energy density capacitor applications.

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Section: State-of-the-art In Electroceramics For Energy Storagesupporting

confidence: 89%

Electroceramics for High-Energy Density Capacitors: Current Status and Future Perspectives

et al. 2021

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“…The optimal permittivity has been found on the multi-phase point, which will be verified as a tricritical point in the later part of this paper. We then depicted the BTS- x (x = 10.5, 12, 13) close to tricritical point (nominated as tricritical ferroelectrics) on the E b - ε r plot and compared it with a series of other energy storage material systems1718192021222324252627 in Fig. 1(b).…”

Section: Resultsmentioning

confidence: 99%

Enhancing dielectric permittivity for energy-storage devices through tricritical phenomenon

Gao

Wang

Liu

et al. 2017

Sci Rep

114

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Although dielectric energy-storing devices are frequently used in high voltage level, the fast growing on the portable and wearable electronics have been increasing the demand on the energy-storing devices at finite electric field strength. This paper proposes an approach on enhancing energy density under low electric field through compositionally inducing tricriticality in Ba(Ti,Sn)O3 ferroelectric material system with enlarged dielectric response. The optimal dielectric permittivity at tricritical point can reach to εr = 5.4 × 104, and the associated energy density goes to around 30 mJ/cm3 at the electric field of 10 kV/cm, which exceeds most of the selected ferroelectric materials at the same field strength. The microstructure nature for such a tricritical behavior shows polarization inhomogeneity in nanometeric scale, which indicates a large polarizability under external electric field. Further phenomenological Landau modeling suggests that large dielectric permittivity and energy density can be ascribed to the vanishing of energy barrier for polarization altering caused by tricriticality. Our results may shed light on developing energy-storing dielectrics with large permittivity and energy density at low electric field.

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“…On the other hand, glass-ceramics simultaneously possess high dielectric strength and transparency conferred by the glass phase and a high dielectric constant derived from the ceramic phase; therefore, crystallized glasses, including ferroelectric ceramics, have been widely studied. [11][12][13][14] Previous studies have shown that the dielectric strength and dielectric constant of ferroelectric crystallized glasses containing niobates are strongly dependent on the glass composition, crystal size, and crystalline phase. [15][16][17][18] Thus, controlled nucleation and crystal growth are required to manipulate these properties.…”

Section: Introductionmentioning

confidence: 99%

⁹³Nb NMR Study of (K, Na)NbO₃‐Doped SiO₂–Na₂O–Al₂O₃ Glasses

Otsuka

Cicconi

Dobesh

et al. 2022

Physica Status Solidi (b)

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Aluminosilicate glasses containing octahedral NbO6 units are developed for future applications as optical materials. Soda‐aluminosilicate glasses doped with Nb‐based alkaline perovskite crystals (K0.5Na0.5NbO3 [KNN]) at different doping levels (2–30 mol%) are studied by 93Nb nuclear magnetic resonance (NMR) spectroscopy. The Al2O3 concentration in the starting soda‐aluminosilicate glass matrix is varied from 5 to 17 mol% to investigate the influence of the composition of local Nb structures with 4–5, 6, and 7–8 fold‐oxygen coordination on the optical properties of the glasses. The chemical shifts are analyzed by comparison with the 93Nb NMR data of reference crystals, including KNN, to determine the feasibility of producing more NbO6 octahedra in the aluminosilicate glasses, where these octahedra are expected to promote the development of optically active Nb‐glass‐ceramics. The data show that both glass polymerization and KNN content influence the Nb local environment. Therefore, an appropriate amount of Al2O3 combined with an adequate doping level of the KNN perovskite is required to achieve the desired optical features. Contrary to expectations, a higher KNN doping level is achieved with the starting depolymerized soda‐aluminosilicate glass containing 5 mol% Al2O3, leading to perovskite‐like structures of NbO6 octahedra in the resultant glass system.

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Crystallization behavior and dielectric properties of K2O–SrO–Nb2O5–B2O3–Al2O3–SiO2 glass-ceramic for energy storage

Cited by 19 publications

References 22 publications

Electroceramics for High-Energy Density Capacitors: Current Status and Future Perspectives

Electroceramics for High-Energy Density Capacitors: Current Status and Future Perspectives

Enhancing dielectric permittivity for energy-storage devices through tricritical phenomenon

⁹³Nb NMR Study of (K, Na)NbO₃‐Doped SiO₂–Na₂O–Al₂O₃ Glasses

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Crystallization behavior and dielectric properties of K2O–SrO–Nb2O5–B2O3–Al2O3–SiO2 glass-ceramic for energy storage

Cited by 19 publications

References 22 publications

Electroceramics for High-Energy Density Capacitors: Current Status and Future Perspectives

Electroceramics for High-Energy Density Capacitors: Current Status and Future Perspectives

Enhancing dielectric permittivity for energy-storage devices through tricritical phenomenon

93Nb NMR Study of (K, Na)NbO3‐Doped SiO2–Na2O–Al2O3 Glasses

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⁹³Nb NMR Study of (K, Na)NbO₃‐Doped SiO₂–Na₂O–Al₂O₃ Glasses