Enhanced energy storage properties of 0.7Bi0·5Na0·5TiO3-0.3SrTiO3 ceramic through the addition of NaNbO3. Issue 21 (1st November 2021)

• Record Type: Journal Article
• Authors: Bilal, Muhammad Kashif; Bashir, Rabia; Asif, Sana Ullah; Wang, Jian; Hu, Wanbiao
• Is Part Of: Ceramics international. Volume 47:Issue 21(2021)
• Page Start: 30922
• Page End: 30928
• Publication Date: 2021-11-01
• Subjects: 0.7BNT-0.3ST-NN ceramics -- Relaxor ferroelectrics -- Energy storage properties; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2021.07.275
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: Relaxor ferroelectrics with high energy density and efficiency are good candidates for pulsed power devices. In the present work, (1- x ) (0.7Bi0·5 Na0·5 TiO3 -0.3SrTiO3 )- x NaNbO3 ( x = 0.0–0.10) [(1- x )(0.7BNT-0.3ST)- x NN] 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 ( W rec ) and efficiency ( ƞ ). Specifically, 0.92(0.7BNT-0.3ST)-0.08NN ceramic showed a high value of W rec ~2.49 J/cm 3 with the ƞ ~ 85% at a low electric-field of 170 kV/cm and retained a small variation (±11%) in W rec 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.