Enhanced energy storage properties in lead-free NaNbO3–Sr0.7Bi0.2TiO3–BaSnO3 ternary ceramic

Autor:	Ruirui Kang, Xiaoxiao Zhang, Haonan Sun, Siyi Li, Peng Shi, Yangfei Gao, Xiaojie Lou, Qida Liu, Bian Yang, Xiaopei Zhu
Rok vydání:	2021
Předmět:	Work (thermodynamics) Materials science Mechanical Engineering Pulsed power Microstructure Grain size Energy storage Mechanics of Materials visual_art visual_art.visual_art_medium General Materials Science Thermal stability Ceramic Composite material Ternary operation
Zdroj:	Journal of Materials Science. 56:11922-11931
ISSN:	1573-4803 0022-2461
DOI:	10.1007/s10853-021-06075-x
Popis:	The urgent requirement of environment-friendly materials with excellent energy storage performance for pulse power systems has sparked considerable research on lead-free ceramics. In this work, a new lead-free 0.90(0.80NaNbO3–0.20Sr0.7Bi0.2TiO3)–0.10BaSnO3 ceramic with high recoverable energy storage density (Wr = 3.51 J/cm3) and decent energy storage efficiency (η = 70.85%) has been obtained. In particular, these ceramics exhibit an ultrahigh breakdown strength of 402 kV/cm due to the dense microstructure and small grain size. The impedance analysis also reveals that the incorporation of BaSnO3 is conducive to the enhancement of insulation ability and breakdown strength. Additionally, great thermal stability (ΔWr
Databáze:	OpenAIRE
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