Journal
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
Volume 37, Issue 6, Pages 2379-2384Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.jeurceramsoc.2017.01.036
Keywords
Lead free; Ferroelectric; Energy density; Discharge efficiency
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Funding
- Ministry of Science and Technology, Govt. of India [SERB/F/5046/2013-14]
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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.
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