Microstructure tailoring for enhancing the energy storage performance of 0.98[0.6Ba(Zr0.2Ti0.8)O3-0.4(Ba0.7Ca0.3)TiO3]-0.02BiZn1/2Ti1/2O3 ceramic capacitors
In this work, we introduce a new approach to enhance the energy storage properties of 0.98[0.6Ba(Zr0.2Ti0.8)O3-0.4(Ba0.7Ca0.3)TiO3]-0.02BiZn1/2Ti1/2O3 [BCZT-BZ] ceramic capacitors via tuning the microstructure through the sintering time. The x-ray diffraction (XRD) analysis confirmed the formation o...
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doaj-1b5c6fe263f444e6976ce0b5a7cc19ed2020-11-25T02:26:36ZengElsevierJournal of Science: Advanced Materials and Devices2468-21792020-03-0151119124Microstructure tailoring for enhancing the energy storage performance of 0.98[0.6Ba(Zr0.2Ti0.8)O3-0.4(Ba0.7Ca0.3)TiO3]-0.02BiZn1/2Ti1/2O3 ceramic capacitorsA.R. Jayakrishnan0Penna Venkata Karthik Yadav1J.P.B. Silva2K.C. Sekhar3Department of Physics, School of Basic and Applied Sciences, Central University of Tamil Nadu, Thiruvarur, 610 005, IndiaDepartment of Physics, School of Basic and Applied Sciences, Central University of Tamil Nadu, Thiruvarur, 610 005, IndiaCentro de Fısica das Universidades do Minho e do Porto (CF-UM-UP), Campus de Gualtar, 4710-057, Braga, Portugal; Corresponding author.Department of Physics, School of Basic and Applied Sciences, Central University of Tamil Nadu, Thiruvarur, 610 005, India; Corresponding author.In this work, we introduce a new approach to enhance the energy storage properties of 0.98[0.6Ba(Zr0.2Ti0.8)O3-0.4(Ba0.7Ca0.3)TiO3]-0.02BiZn1/2Ti1/2O3 [BCZT-BZ] ceramic capacitors via tuning the microstructure through the sintering time. The x-ray diffraction (XRD) analysis confirmed the formation of BCZT-BZ solid solution without any secondary phase. It is observed that the rhombohedral and tetragonal phases co-exist in BCZT-BZ samples sintered at different time periods, except the one sintered for 11 h, where the rhombohedral and pseudocubic phases co-exist. The energy dispersive x-ray spectroscopy (EDS) revealed the presence of the elements constituting the BCZT-BZ samples. The variation of the grain size with the sintering time is explained based on the coalescence process and the Ostwald ripening mechanism. A strong correlation was observed between the ferroelectric properties and the microstructure. The sample sintered for 11 h with pseudocubic nature and small grain size shows a slim P-E loop owing to a high recoverable energy density (2.61 J/cm3) and a high efficiency (91%) at an electric field of 150 kV/cm. The observed recoverable energy density was found 3 to 13 times higher than that reported for bulk BCZT. These findings suggest that the present BCZT-BZ ceramics are attractive materials for the energy storage capacitor applications. Keywords: Ceramics, Relaxor ferroelectrics, Lattice distortion, Grain size, Recoverable energyhttp://www.sciencedirect.com/science/article/pii/S2468217919302382 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
A.R. Jayakrishnan Penna Venkata Karthik Yadav J.P.B. Silva K.C. Sekhar |
spellingShingle |
A.R. Jayakrishnan Penna Venkata Karthik Yadav J.P.B. Silva K.C. Sekhar Microstructure tailoring for enhancing the energy storage performance of 0.98[0.6Ba(Zr0.2Ti0.8)O3-0.4(Ba0.7Ca0.3)TiO3]-0.02BiZn1/2Ti1/2O3 ceramic capacitors Journal of Science: Advanced Materials and Devices |
author_facet |
A.R. Jayakrishnan Penna Venkata Karthik Yadav J.P.B. Silva K.C. Sekhar |
author_sort |
A.R. Jayakrishnan |
title |
Microstructure tailoring for enhancing the energy storage performance of 0.98[0.6Ba(Zr0.2Ti0.8)O3-0.4(Ba0.7Ca0.3)TiO3]-0.02BiZn1/2Ti1/2O3 ceramic capacitors |
title_short |
Microstructure tailoring for enhancing the energy storage performance of 0.98[0.6Ba(Zr0.2Ti0.8)O3-0.4(Ba0.7Ca0.3)TiO3]-0.02BiZn1/2Ti1/2O3 ceramic capacitors |
title_full |
Microstructure tailoring for enhancing the energy storage performance of 0.98[0.6Ba(Zr0.2Ti0.8)O3-0.4(Ba0.7Ca0.3)TiO3]-0.02BiZn1/2Ti1/2O3 ceramic capacitors |
title_fullStr |
Microstructure tailoring for enhancing the energy storage performance of 0.98[0.6Ba(Zr0.2Ti0.8)O3-0.4(Ba0.7Ca0.3)TiO3]-0.02BiZn1/2Ti1/2O3 ceramic capacitors |
title_full_unstemmed |
Microstructure tailoring for enhancing the energy storage performance of 0.98[0.6Ba(Zr0.2Ti0.8)O3-0.4(Ba0.7Ca0.3)TiO3]-0.02BiZn1/2Ti1/2O3 ceramic capacitors |
title_sort |
microstructure tailoring for enhancing the energy storage performance of 0.98[0.6ba(zr0.2ti0.8)o3-0.4(ba0.7ca0.3)tio3]-0.02bizn1/2ti1/2o3 ceramic capacitors |
publisher |
Elsevier |
series |
Journal of Science: Advanced Materials and Devices |
issn |
2468-2179 |
publishDate |
2020-03-01 |
description |
In this work, we introduce a new approach to enhance the energy storage properties of 0.98[0.6Ba(Zr0.2Ti0.8)O3-0.4(Ba0.7Ca0.3)TiO3]-0.02BiZn1/2Ti1/2O3 [BCZT-BZ] ceramic capacitors via tuning the microstructure through the sintering time. The x-ray diffraction (XRD) analysis confirmed the formation of BCZT-BZ solid solution without any secondary phase. It is observed that the rhombohedral and tetragonal phases co-exist in BCZT-BZ samples sintered at different time periods, except the one sintered for 11 h, where the rhombohedral and pseudocubic phases co-exist. The energy dispersive x-ray spectroscopy (EDS) revealed the presence of the elements constituting the BCZT-BZ samples. The variation of the grain size with the sintering time is explained based on the coalescence process and the Ostwald ripening mechanism. A strong correlation was observed between the ferroelectric properties and the microstructure. The sample sintered for 11 h with pseudocubic nature and small grain size shows a slim P-E loop owing to a high recoverable energy density (2.61 J/cm3) and a high efficiency (91%) at an electric field of 150 kV/cm. The observed recoverable energy density was found 3 to 13 times higher than that reported for bulk BCZT. These findings suggest that the present BCZT-BZ ceramics are attractive materials for the energy storage capacitor applications. Keywords: Ceramics, Relaxor ferroelectrics, Lattice distortion, Grain size, Recoverable energy |
url |
http://www.sciencedirect.com/science/article/pii/S2468217919302382 |
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