Multiple relaxor phases driving excellent energy storage performance in Na 0.5 Bi 0.5 TiO 3 -based ceramics via dual-site ion-pair structure design

We synthesized BNT-BSW ceramics via a dual-site ion-pair structure design strategy to achieve an outstanding W rec of 6.57 J cm −3 and an η of 71.5%, showing huge application potential in high-performance lead-free dielectric capacitors.