Outstanding Energy Storage Performance in High‐Hardness (Bi0.5K0.5)TiO3‐Based Lead‐Free Relaxors via Multi‐Scale Synergistic Design

• Published in: Advanced functional materials Vol. 32; no. 9
• Main Authors: Chen, Liang, Long, Feixiang, Qi, He, Liu, Hui, Deng, Shiqing, Chen, Jun
• Format: Journal Article
• Language: English
• Published: Hoboken Wiley Subscription Services, Inc 01.02.2022
• Subjects: (Bi 0.5K 0.5)TiO 3; Barium titanates; Capacitors; Ceramics; Charge density; Diamond pyramid hardness; Discharge; Electronic devices; Energy storage; Ferroelectricity; Flux density; Frequency stability; Grain boundaries; Grain size; hardness; lead free; Materials science; Microstructure; relaxor ferroelectric; Relaxors; Storage temperature; Ultrafines

Lead‐free dielectric ceramics with ultrahigh energy storage performance are the best potential stocks used in next‐generation advanced pulse power capacitors. Here, an ultrahigh recoverable energy storage density Wrec of ≈7.57 J cm−3 and a large efficiency η of ≈81.4% are first realized in (Bi0.5K0....