Issue 13, 2023

High-performance energy-storage ferroelectric multilayer ceramic capacitors via nano-micro engineering

Abstract

The theory of obtaining high energy-storage density and efficiency for ceramic capacitors is well known, e.g. increasing the breakdown electric field and decreasing remanent polarization of dielectric materials. How to achieve excellent energy storage performance through structure design is still a challenge. Here, we propose a synergetic nano-micro engineering approach to achieve high energy-storage behavior in (1 − x)(0.65Bi0.5Na0.5TiO3-0.35SrTiO3)-xLa(Mg1/2Zr1/2)O3 multilayer ceramic capacitors (MLCCs). The introduction of La(Mg1/2Zr1/2)O3 not only promotes the domains to transform into polar nano-regions, but also improves microscale-structure homogenization, leading to enhanced relaxation characteristic and dielectric breakdown strength. Moreover, constructing a multilayer structure by decreasing the thickness of the dielectric layer to ∼10 μm further increases the dielectric breakdown strength to 1050 kV cm−1. This nano-micro engineering results in a high energy density of 13.5 J cm−3 together with a large efficiency of 90% in the MLCC with x = 0.15. The MLCC also exhibits excellent temperature and frequency stability, where the variations in energy density are just 1% (20–120 °C) and 2% (1–100 Hz), respectively. This material design strategy based on nano-micro engineering demonstrates a positive size effect on energy-storage performances, promoting the development of the ferroelectric family in energy-storage fields.

Graphical abstract: High-performance energy-storage ferroelectric multilayer ceramic capacitors via nano-micro engineering

Supplementary files

Article information

Article type
Paper
Submitted
01 Nov 2022
Accepted
01 Mar 2023
First published
02 Mar 2023

J. Mater. Chem. A, 2023,11, 7184-7192

High-performance energy-storage ferroelectric multilayer ceramic capacitors via nano-micro engineering

Z. Ma, Y. Li, Y. Zhao, N. Sun, C. Lu, P. Han, D. Wang, Y. Hu, X. Lou and X. Hao, J. Mater. Chem. A, 2023, 11, 7184 DOI: 10.1039/D2TA08523B

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