Enhanced energy storage properties of 0.7Bi0·5Na0·5TiO3-0.3SrTiO3 ceramic through the addition of NaNbO3
Source abstract
Abstract
Abstract Relaxor ferroelectrics with high energy density and efficiency are good candidates for pulsed power devices. In the present work, (1-x) (0.7Bi0·5Na0·5TiO3-0.3SrTiO3)-xNaNbO3 (x = 0.0–0.10) [(1-x)(0.7BNT-0.3ST)-xNN] ceramics were prepared using conventional solid state reaction method. The typical relaxor ferroelectric behavior was found in all compositions. The transformation of the material from non-ergodic to an ergodic realxor ferroelectric phase with increasing NN content was revealed, which facilitated the enhanced recoverable energy (Wrec) and efficiency (ƞ). Specifically, 0.92(0.7BNT-0.3ST)-0.08NN ceramic showed a high value of Wrec ~2.49 J/cm3 with the ƞ ~ 85% at a low electric-field of 170 kV/cm and retained a small variation (±11%) in Wrec and the high ƞ (>84%) over a broad temperature range (0 °C–120 °C). The remarkable performance of 0.92(0.7BNT-0.3ST)-0.08NN ceramic making it promising for applications of low electric-field and temperature-stable energy storage capacitors.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Ferroelectric and Piezoelectric Materials · Dielectric materials and actuators · Acoustic Wave Resonator Technologies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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