Publication detail
Enhanced energy-storage performance with excellent stability under low electric fields in BNT–ST relaxor ferroelectric ceramics
Weigang Ma, Yiwei Zhu, Mohsin Ali Marwat, Pengyuan Fan, Bing Xie, David Salamon, Zuo-Guang Ye and Haibo Zhang
Original Title
Enhanced energy-storage performance with excellent stability under low electric fields in BNT–ST relaxor ferroelectric ceramics
Type
journal article in Scopus
Language
English
Original Abstract
Relaxor ferroelectrics are promising candidates for pulsed power dielectric capacitor applications because of their excellent energy-storage properties. Different from most relaxor ferroelectrics whose energy-storage density was improved by increasing the breakdown strength and reducing the remanent polarization, in this study, anti-ferroelectric (AFE) AgNbO3 (AN) was used to partially substitute the relaxor ferroelectric 0.76Bi0.5Na0.5TiO3–0.24SrTiO3 (BNT–ST) of morphotropic phase boundary (MPB) composition to reduce the remanent polarization while maintaining large maximum polarization. In this way, a large recoverable energy-storage density (2.03 J cm−3) was obtained in the BNT–ST–5AN ceramics under lower electric field of 120 kV cm−1, which is superior to other lead-free energy-storage materials under similar electric fields. Moreover, excellent temperature (25–175 °C) and frequency (1–100 Hz) stabilities are achieved. This performance demonstrates that the BNT–ST–5AN ceramics form a promising class of dielectric capacitive material for high-temperature pulsed power capacitors with large energy-storage density.
Keywords
energy-storage; relaxor ferroelectric; large polarization; morphotropic phase boundary (MPB); temperature stability
Authors
Weigang Ma, Yiwei Zhu, Mohsin Ali Marwat, Pengyuan Fan, Bing Xie, David Salamon, Zuo-Guang Ye and Haibo Zhang
Released
1. 1. 2019
ISBN
2050-7534
Periodical
Journal of Materials Chemistry C
Year of study
7
Number
2
State
United Kingdom of Great Britain and Northern Ireland
Pages from
281
Pages to
288
Pages count
8
URL
BibTex
@article{BUT151910,
author="David {Salamon}",
title="Enhanced energy-storage performance with excellent stability under low electric fields in BNT–ST relaxor ferroelectric ceramics",
journal="Journal of Materials Chemistry C",
year="2019",
volume="7",
number="2",
pages="281--288",
doi="10.1039/C8TC04447C",
issn="2050-7534",
url="https://pubs.rsc.org/en/Content/ArticleLanding/2018/TC/C8TC04447C#!divAbstract"
}