A complex lead-free (Na, Bi, Ba)(Ti, Fe)O-3 single phase perovskite ceramic with a high energy-density and high discharge-efficiency for solid state capacitor applications

Mishra, Anupam and Majumdar, Bhaskar and Ranjan, Rajeev (2017) A complex lead-free (Na, Bi, Ba)(Ti, Fe)O-3 single phase perovskite ceramic with a high energy-density and high discharge-efficiency for solid state capacitor applications. In: JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 37 (6). pp. 2379-2384.

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Abstract

We have investigated a series of compositions in the pseudo-ternary lead-free alloy system Na1/2Bi1/2TiO3-BaTiO3-BiFeO3 with regard to its energy storage density and discharge efficiency. A composition 0.4(Na0.5Bi0.5TiO3)-0.225BaTiO(3)-0.375BiFeO(3) of this series was identified to give the best energy density and discharge efficiency. While conventional sintering gave energy density of 0.77 J/cm(3) and discharge efficiency of 67%, we achieved a remarkable increase in energy storage density (similar to 1.4 J/cm3) and discharge efficiency (similar to 90%) by using spark plasma sintering of this composition. Our results suggest that this alloy system can be a potential lead-free candidate for high electric energy storage and discharge efficiency.(C) 2017 Elsevier Ltd. All rights reserved.

Item Type:	Journal Article
Publication:	JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
Publisher:	ELSEVIER SCI LTD, THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
Additional Information:	Copy right for this article belongs to the ELSEVIER SCI LTD, THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
Department/Centre:	Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited:	20 May 2017 04:09
Last Modified:	20 May 2017 04:09
URI:	http://eprints.iisc.ac.in/id/eprint/56834

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