Journal ArticleDOI
Remarkably enhanced energy storage properties of lead-free Ba0.53Sr0.47TiO3 thin films capacitors by optimizing bottom electrode thickness
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TLDR
In this article, Ba0.53Sr0.47TiO3 (BST) thin films buffered with La0.67Sr 0.33MnO3 bottom electrode of different thicknesses were fabricated by pulsed laser deposition method on a (001) Sr TiO3 substrate, and it was found that the roughness of electrode decreases and substrate stress relaxes gradually with the increase of LSMO thickness.Abstract:
The lead-free Ba0.53Sr0.47TiO3 (BST) thin films buffered with La0.67Sr0.33MnO3 (LSMO) bottom electrode of different thicknesses were fabricated by pulsed laser deposition method on a (001) SrTiO3 substrate. It was found that the roughness of electrode decreases and substrate stress relaxes gradually with the increase of LSMO thickness, which is beneficial for weakening local high electric field and achieving higher Eb. Therefore, the recoverable energy density (Wrec) of BST films can be greatly improved up to 67.3 %, that is, from 30.6 J/cm3 for the LSMO thickness of 30 nm up to 51.2 J/cm3 for the LSMO thickness of 140 nm after optimizing the LSMO thickness. Furthermore, the thin film capacitor with a 140 nm LSMO bottom electrode shows an outstanding thermal stability from 20 °C to 160 °C and superior fatigue resistance after 108 electrical cycles with only a slightly decrease of Wrec below 1.6 % and 3.7 %, respectively. Our work demonstrates that optimizing bottom electrodes thickness is a promising way for enhancing energy storage properties of thin-film capacitors.read more
Citations
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Journal ArticleDOI
Energy storage performance of Bi0.5Na0.5TiO3-based relaxor ferroelectric ceramics with superior temperature stability under low electric fields
Ruirui Kang,Zepeng Wang,Xiaojie Lou,Wenyuan Liu,Peng Shi,Xiaopei Zhu,Xudong Guo,Siyi Li,Haonan Sun,Lixue Zhang,Qinzhao Sun +10 more
TL;DR: In this article, the authors designed a comprehensive strategy to synthesize lead-free (Bi1/2Na 1/2)1−xSrxTi0.02O3 (BNT-xST-2FN, x = 0.30, 0.35, 040 and 0.45) ceramics via traditional solid-state method.
Journal ArticleDOI
Strategies to Improve the Energy Storage Properties of Perovskite Lead-Free Relaxor Ferroelectrics: A Review
TL;DR: Some of the main strategies to improve the energy density properties of perovskite lead-free relaxor systems are reviewed, including chemical modification at different crystallographic sites, chemical additives that do not target lattice sites, and novel processing approaches dedicated to bulk ceramics, thick and thin films, respectively.
Journal ArticleDOI
(Ba, Sr)TiO3/polymer dielectric composites–progress and perspective
TL;DR: In this article, a dielectric tunability theoretical model for (Ba,Sr)TiO3/polymer functional composites with different polymer matrices is proposed.
Journal ArticleDOI
Enhanced energy storage performance of 0.88(0.65Bi0.5Na0.5TiO3-0.35SrTiO3)-0.12Bi(Mg0.5Hf0.5)O3 lead-free relaxor ceramic by composition design strategy
Xiaopei Zhu,Peng Shi,Ya Gao,Ruirui Kang,Jian-Zhuang Zhao,and Yufang Xiao,Wenjing Qiao,Jinyan Zhao,Zhe Wang,Xiaojie Lou +9 more
TL;DR: In this paper , the influence of solid solution of SrTiO3 and Bi(Mg0.5Hf 0.5)O3 doping on crystal structure, microstructure, electrical and energy storage performance were evaluated systematically.
Journal ArticleDOI
High Energy Performance Ferroelectric (Ba,Sr)(Zr,Ti)O3 Film Capacitors Integrated on Si at 400 °C.
Kun Wang,Kun Wang,Yuan Zhang,Sixu Wang,Yu-Yao Zhao,Hongbo Cheng,Qian Li,Xiangli Zhong,Jun Ouyang,Jun Ouyang +9 more
TL;DR: In this paper, an A, B-site co-doped BaTiO3-based ferroelectrics have been extensively studied due to their large dielectric constants and high saturated polarization, which have the potential to store or supply electricity of very high energy and power densities.
References
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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.
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Journal ArticleDOI
Ultrahigh–energy density lead-free dielectric films via polymorphic nanodomain design
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TL;DR: The enhancement in the dielectric properties suggests that the strategy for optimizing a ceramic solid solution enables the design of better high- performance capacitors and should be generalizable for designing high-performance dielectrics and other functional materials that benefit from nanoscale domain structure manipulation.
Journal ArticleDOI
High-Performance Dielectric Ceramic Films for Energy Storage Capacitors: Progress and Outlook
Journal ArticleDOI
Relaxor Ferroelectric BaTiO3–Bi(Mg2/3Nb1/3)O3 Ceramics for Energy Storage Application
TL;DR: In this paper, the authors showed that the BMN addition could lower the sintering temperature of BT-based ceramics, and they also revealed a pure perovskite structure for all studied samples.