Ultrahigh energy-storage density of a lead-free 0.85Bi<sub>0.5</sub>Na<sub>0.5</sub>TiO<sub>3</sub>–0.15Ca(Nb<sub>0.5</sub>Al<sub>0.5</sub>)O<sub>3</sub> ceramic under low electric fields
Jiangtao Fan, Gang He, Zhenzhu Cao, Yongfan Cao, Zhen Long, Zhanggui Hu
Abstract
Ultrahigh recoverable energy storage density ( W rec = 4.41 J cm −3 ) and efficiency ( η = 88%) at low electric field (210 kV cm −1 ), over wide frequency (10–100 Hz) and temperature (20–200 °C) were achieved simultaneously for 0.85Bi 0.5 Na 0.5 TiO 3 -0.15Ca(Nb 0.5 Al 0.5 )O 3 ceramics.
Topics & Concepts
Materials scienceAnalytical Chemistry (journal)Electric fieldLead (geology)CeramicChemistryPhysicsMetallurgyQuantum mechanicsGeologyChromatographyGeomorphologyFerroelectric and Piezoelectric MaterialsMicrowave Dielectric Ceramics SynthesisDielectric properties of ceramics