Greatly enhanced discharge energy density and efficiency of novel relaxation ferroelectric BNT–BKT-based ceramics

Abstract

The 0.65(NBT-BKT)–0.35SBT ceramic possesses an ultra-high recoverable energy storage density (<italic>W</italic>_rec ∼ 4.06 J cm⁻³) and maintains a relatively high efficiency (<italic>η</italic> = ∼87.3%).