Enhanced energy storage and photoluminescence properties in ErBiO3-doped (Na0.5Bi0.5)TiO3-SrTiO3 ceramics

Simultaneously enhanced energy density and discharge efficiency of (Na0.5Bi0.5)0.7Sr0.3TiO3-La1/3(Ta0.5Nb0.5)O3 lead-free energy storage ceramics via grain inhibition and dielectric peak flattening engineering

“…1 Commonly, forming multivariate solid solution systems is a feasible modification approach for BNT-based ceramics to obtain relatively superior ESP, such as (1 − x )Bi 0.5 Na 0.5 TiO 3 - x BaTiO 3 , 15–17 (1 − x )Bi 0.5 Na 0.5 TiO 3 - x NaNbO 3 , 18,19 (1 − x )Bi 0.5 Na 0.5 TiO 3 - x CaTiO 3 20,21 and (1 − x )Bi 0.5 Na 0.5 TiO 3 - x SrTiO 3 (BNT-ST). 22,23 In particular, BNT-ST is considered as one of the most potentially useful energy storage ceramic materials as it can decrease the temperature at the dielectric maxima ( T m ) and exhibit a thinner P – E loop and lower P r under low E conditions. 24 Zhang et al procured good W rec (1.85 J cm −3 ) and η (65.92%) under 150 kV cm −1 by inducing polar nano regions (PNRs) and reducing the grain size.…”