High energy storage performance of [(Bi0.5Na0.5)0.94Ba0.06]0.97La0.03Ti1-(Al0.5Nb0.5) O3 ceramics with enhanced dielectric breakdown strength
Source abstract
Abstract
Abstract Novel lead-free [(Bi 0.5 Na 0.5 ) 0.94 Ba 0.06 ] 0.97 La 0.03 Ti 1- x (Al 0.5 Nb 0.5 ) x O 3 ceramics (BNBLT- x AN) were prepared by the conventional solid state sintering method. The dielectric, ferroelectric, ac impedance and energy-storage performance were systematically investigated. Temperature dependent permittivity curves showed that relaxation properties of sintered ceramics gradually diminished with the increase of AN. The introduction of AN gave rise to a slimmer polarization hysteresis loop ( P-E ) and an enhanced dielectric breakdown strength (DBS). Therefore, the optimum energy-storage performance were realized at x = 0.05 with the energy-storage density ( W rec ) of 1.72 J/cm 3 and energy-storage efficiency ( η ) of 85.6% at 105 kV/cm, accompanied with the excellent temperature stability and fatigue performance. The results demonstrated that BNBLT- x AN system was a promising lead-free candidate for energy-storage applications.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Ferroelectric and Piezoelectric Materials · Dielectric materials and actuators · Microwave Dielectric Ceramics Synthesis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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