Issue 10, 2023

(Bi1/6Na1/6Ba1/6Sr1/6Ca1/6Pb1/6)TiO3-based high-entropy dielectric ceramics with ultrahigh recoverable energy density and high energy storage efficiency

Abstract

Inspired by the development of high-power/pulsed-power techniques, dielectric capacitors with enormous power densities as well as ultrafast charge/discharge speeds have captured increasing attention and extensive research, particularly ceramic capacitors. Nevertheless, the limited recoverable energy density (Wrec) and/or low energy storage efficiency (η) of ceramic capacitors delay their applications in capacitive energy storage. Herein, single phase high-entropy (Bi1/6Na1/6Ba1/6Sr1/6Ca1/6Pb1/6)Ti1−xZrxO3 dielectric ceramics are designed and investigated. The enhanced dielectric relaxation behavior and fine grain size gave rise to decreased remnant polarization (Pr) and promoted electric breakdown strength (Eb). The special electronic structure of Pb2+ and Bi3+ favors retaining relatively large maximum polarization (Pmax). Accordingly, ultrahigh Wrec of 8.8 J cm−3, high η of 92.5%, and exceptional thermal reliability (Wrec = 4.5 J cm−3 ± 6.5% in the range of 25–180 °C) are synchronously achieved in the optimum composition of x = 0.12, providing a feasible strategy to explore high-performance dielectric ceramics for applications in electrostatic energy storage.

Graphical abstract: (Bi1/6Na1/6Ba1/6Sr1/6Ca1/6Pb1/6)TiO3-based high-entropy dielectric ceramics with ultrahigh recoverable energy density and high energy storage efficiency

Supplementary files

Article information

Article type
Communication
Submitted
31 N’w 2022
Accepted
31 Sun 2023
First published
13 Yan 2023

J. Mater. Chem. A, 2023,11, 4937-4945

(Bi1/6Na1/6Ba1/6Sr1/6Ca1/6Pb1/6)TiO3-based high-entropy dielectric ceramics with ultrahigh recoverable energy density and high energy storage efficiency

H. Wang, J. Zhang, S. Jiang, J. Wang, J. Wang and Y. Wang, J. Mater. Chem. A, 2023, 11, 4937 DOI: 10.1039/D2TA10098C

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements