April 22 - 26, 2024
Seattle, Washington
May 7 - 9, 2024 (Virtual)

Event Supporters

2024 MRS Spring Meeting
EL07.13.01

Energy Storage Properties of Samarium-Doped Bismuth Sodium Titanate-Based Lead-Free Ceramics

When and Where

Apr 26, 2024
1:30pm - 1:45pm
Room 342, Level 3, Summit

Presenter(s)

Co-Author(s)

Xuyao Tang1,Zimeng Hu1,Vladimir Koval2,Bin Yang3,Graham Smith3,Haixue Yan1

Queen Mary University of London1,Slovak Academy of Sciences2,University of Chester3

Abstract

Xuyao Tang1,Zimeng Hu1,Vladimir Koval2,Bin Yang3,Graham Smith3,Haixue Yan1

Queen Mary University of London1,Slovak Academy of Sciences2,University of Chester3
Due to worldwide environmental regulations, lead-free relaxors, namely Bi<sub>0.5</sub>Na<sub>0.5</sub>TiO<sub>3</sub>–6BaTiO<sub>3</sub> (BNT-6BT) are being extensively studied as an alternative candidate for energy storage applications. Here, Sm was introduced at different A sites of the relaxor system; specifically, the Sm-doped BNT-6BT system was designed to replace Bi (BNT-Bi), Na (BNT-Na), and both the Bi and Na ions (BNT-BiNa) by Sm ions. It was found that the BNT-Bi sample possesses high piezoelectricity (<i>d<sub>33</sub></i>=117.3 pC N<sup>-1</sup>), whereas the BNT-Na and BNT-BiNa ceramics show exceptionally high values of the energy storage density and efficiency. To define the energy storage performance, a new concept based on determining the recoverable energy storage intensity is proposed in the present work. This allows bypassing the high applied electric fields in determining the value of the energy storage density. An ultrahigh recoverable energy storage density (4.41 J cm<sup>-3</sup>), excellent energy storage efficiency (83.96%) and superhigh recoverable energy storage intensity (19.17×10-3 J kV-1 cm<sup>-2</sup>) were achieved in the BNT-BiNa ceramics simultaneously. Furthermore, the energy storage characteristics exhibit an excellent stability over a wide temperature range from 25 °C to 150 °C. Thus, the developed Sm-doped BNT-6BT ceramics show great potential for piezoelectric and high-power energy storage applications.<br/><br/>This paper has been published in Chemical Engineering Journal 473 (2023) 145363, https://doi.org/10.1016/j.cej.2023.145363

Symposium Organizers

John Heron, University of Michigan
Morgan Trassin, ETH Zurich
Ruijuan Xu, North Carolina State University
Di Yi, Tsinghua University

Symposium Support

Gold
ADNANOTEK CORP.

Bronze
Arrayed Materials (China) Co., Ltd.
NBM Design, Inc.

Session Chairs

Kevin Crust
Aileen Luo

In this Session