Modified Sodium niobate-based 0.76(NaNbO3)-0.24(Sr0.55La0.3TiO3) ceramics for energy storage

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dc.contributor.authorEmmanuel, Marwa
dc.date.accessioned2024-08-19T06:59:38Z
dc.date.available2024-08-19T06:59:38Z
dc.date.issued2023-09
dc.descriptionAbstract. Full text available at: https://doi.org/10.1016/j.matchemphys.2023.127983
dc.description.abstractBecause of their fast discharge speed and excellent fatigue resistance, dielectric ceramics are highly sought after for electronic systems. However, the low energy density caused by the low breakdown electric field leads to poor volumetric efficiency, which is the main challenge for dielectric ceramics in practical applications. Through a ramp-soak-spike (RSS) strategy, we propose a system based on lead-free materials (Sodium niobate precursors) with an enhanced breakdown electric field, resulting in an exquisite energy storage density within perovskite NaNbO3-based ceramics. The current study developed a superior 0.76(NaNbO3)-0.24(Sr0.55La0.3TiO3) ceramics system, abbreviated ME-RSS, for ramp-soak-spike sintering with a high recoverable energy density (Wrec) of 5.8 J cm−3, an efficiency (η) of 85% and high breakdown strength of approximately 440 kVcm−1. Despite these remarkable properties, the system can withstand a high number of cycles as well as a high charge-discharge speed. The current study proposes NaNbO3-based ceramics designed via a RSS sintering route through doping to improve dielectric ceramic breakdown strength, which is expected to benefit a wide range of dielectric ceramic applications requiring high breakdown strength, such as high-voltage capacitors and electrocaloric solid-state cooling devices.
dc.identifier.citationEmmanuel, M. (2023). Modified Sodium niobate-based 0.76 (NaNbO3)-0.24 (Sr0. 55La0. 3TiO3) ceramics for energy storage. Materials Chemistry and Physics, 305, 127983.
dc.identifier.doi10.1016/j.matchemphys.2023.127983
dc.identifier.otherURL: https://doi.org/10.1016/j.matchemphys.2023.127983
dc.identifier.urihttps://repository.udom.ac.tz/handle/20.500.12661/4764
dc.language.isoen
dc.publisherElsevier BV
dc.relation.ispartofMaterials Chemistry and Physics
dc.subjectSodium niobate
dc.subjectDielectric ceramics
dc.subjectModified Sodium niobate
dc.subjectCeramics system
dc.subjectEnergy storage using ceramics
dc.titleModified Sodium niobate-based 0.76(NaNbO3)-0.24(Sr0.55La0.3TiO3) ceramics for energy storage
dc.typeArticle
oaire.citation.volume305
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