Journal ArticleDOI
Multilayer ceramic capacitors based on relaxor BaTiO3-Bi(Zn1/2Ti1/2)O3 for temperature stable and high energy density capacitor applications
Nitish Kumar,Aleksey Ionin,Troy Y. Ansell,Seongtae Kwon,Wesley S. Hackenberger,David P. Cann +5 more
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TLDR
In this paper, multilayer ceramic capacitors based on relaxor BaTiO3-Bi(Zn 1/2Ti1/2)O3 (BT-BZT) were fabricated and characterized.Abstract:
The need for miniaturization without compromising cost and performance continues to motivate research in advanced capacitor devices. In this report, multilayer ceramic capacitors based on relaxor BaTiO3-Bi(Zn1/2Ti1/2)O3 (BT-BZT) were fabricated and characterized. In bulk ceramic embodiments, BT-BZT has been shown to exhibit relative permittivities greater than 1000, high resistivities (ρ > 1 GΩ-cm at 300 °C), and negligible saturation up to fields as high as 150 kV/cm. Multilayer capacitor embodiments were fabricated and found to exhibit similar dielectric and resistivity properties. The energy density for the multilayer ceramics reached values of ∼2.8 J/cm3 at room temperature at an applied electric field of ∼330 kV/cm. This represents a significant improvement compared to commercially available multilayer capacitors. The dielectric properties were also found to be stable over a wide range of temperatures with a temperature coefficient of approximately −2000 ppm/K measured from 50 to 350 °C, an important...read more
Citations
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Perovskite lead-free dielectrics for energy storage applications
TL;DR: In this paper, the authors summarize the principles of dielectric energy-storage applications, and recent developments on different types of Dielectrics, namely linear dielectrics (LDE), paraelectric, ferroelectrics, and antiferro electrics, focusing on perovskite lead-free dielectors.
Journal ArticleDOI
Multilayer Lead-Free Ceramic Capacitors with Ultrahigh Energy Density and Efficiency.
TL;DR: The newly developed capacitor exhibits a wide temperature usage range of -60 to 120 °C, with an energy-density variation of less than 10%, and satisfactory cycling reliability, with degradation of more than 8% over 106 cycles demonstrate that the NBT-0.45SBT multilayer ceramic is a promising candidate for high-power energy storage applications.
Journal ArticleDOI
Phase transitions in bismuth-modified silver niobate ceramics for high power energy storage
Ye Tian,Ye Tian,Li Jin,Hangfeng Zhang,Zhuo Xu,Xiaoyong Wei,Giuseppe Viola,Giuseppe Viola,Isaac Abrahams,Haixue Yan +9 more
TL;DR: In this paper, the authors used the Curie-Weiss law to model the low temperature phase behavior of the parent compound AgNbO3, which is an important material for high power energy storage applications.
Journal ArticleDOI
Grain-orientation-engineered multilayer ceramic capacitors for energy storage applications.
Jinglei Li,Zhonghui Shen,Xianghua Chen,Shuai Yang,Zhou Wenlong,Mingwen Wang,Linghang Wang,Qiangwei Kou,Yingchun Liu,Qun Li,Zhuo Xu,Yunfei Chang,Shujun Zhang,Fei Li +13 more
TL;DR: A strategy to increase the breakdown electric field and thus enhance the energy storage density of polycrystalline ceramics by controlling grain orientation is proposed, which is expected to benefit a wide range of applications of dielectrics for which high breakdown strength is required, such as high-voltage capacitors and electrocaloric solid-state cooling devices.
Journal ArticleDOI
Lead-free BaTiO3–Bi(Zn2/3Nb1/3)O3 weakly coupled relaxor ferroelectric materials for energy storage
TL;DR: In this article, BaTiO3 and Bi(Zn2/3Nb1/3)O3 materials were fabricated via solid-state reactions and a pure perovskite pseudocubic structure was obtained for all compositions.
References
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Journal ArticleDOI
Base-Metal Electrode-Multilayer Ceramic Capacitors: Past, Present and Future Perspectives
TL;DR: In this article, the effect of site occupancy of rare-earth ions in BaTiO3 on the electrical properties and microstructure of nonreducible dielectrics is studied systematically.
Journal ArticleDOI
Lead-Free Relaxor Ferroelectrics
TL;DR: In this paper, the authors outline how lead-free relaxors can offer a route to an environmentally safer option in this outstanding material class and discuss properties of uniaxial, planar, and volumetric relaxor compositions.
Journal ArticleDOI
High-Energy Density Capacitors Utilizing 0.7 BaTiO3–0.3 BiScO3 Ceramics
TL;DR: In this article, a single dielectric layer capacitors were prepared to confirm the feasibility of BaTiO 3 -BiScO 3 for power electronic capacitors, and an energy density of about 6.1 J/cm 3 at a field of 73 kV/mm could be achieved at room temperature.
Journal ArticleDOI
Energy Storage in Ceramic Dielectrics
TL;DR: In this article, the authors considered the capacity of multilayer ceramic capacitors (MLC's) for energy storage applications and showed that the best energy density is obtained in high dielectric constant materials but in those materials which display intermediate and the highest ultimate breakdown voltages.
Journal ArticleDOI
Temperature‐Stable Dielectrics Based on Chemically Inhomogeneous BaTiO3
Detlev Hennings,G. Rosenstein +1 more
TL;DR: The dielectric properties and chemical homogeneity of BaTiO3 ceramics sintered with additions of the pseudophase "CdBi2Nb2O9" were investigated using SEM, TEM, STEM, and EDX as mentioned in this paper.