Enhanced Energy-Storage Properties and Good Temperature Stability in 0.92(Sr0.7Bi0.2)TiO3–0.08Bi(Mg0.5Hf0.5)O3 Relaxor Ferroelectric Ceramic

Xi Kong; Letao Yang; Zhenxiang Cheng; Shujun Zhang

doi:10.1002/aesr.202100015

Enhanced Energy-Storage Properties and Good Temperature Stability in 0.92(Sr_0.7Bi_0.2)TiO₃–0.08Bi(Mg_0.5Hf_0.5)O₃ Relaxor Ferroelectric Ceramic

Xi Kong^*
, Letao Yang
, Zhenxiang Cheng
, Shujun Zhang^*

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

12 Citations (Scopus)

1 Downloads (CityUHK Scholars)

Abstract

Herein, the (1 − x)(Sr_0.7Bi_0.2)TiO₃–xBi(Mg_0.5Hf_0.5)O₃ (SBT–100xBMH, x = 0.04–0.10) relaxor ferroelectric ceramics are fabricated via the high-temperature solid-state reaction method. Dielectric and ferroelectric measurements reveal a typical relaxor characteristic with diffused and frequency-dependent dielectric peaks. The characteristic Weibull breakdown strength (BDS) of 470 kV cm⁻¹ with satisfied reliability is obtained by DC breakdown measurement. A maximum recoverable energy density of 3.5 J cm⁻³ with the corresponding energy efficiency of 92% is simultaneously achieved at 380 kV cm⁻¹. The recoverable energy density exhibits minor degradations from ambient temperature to 200 °C with variation below 20%, whereas the energy efficiency is maintained above 90%. In addition, the SBT–8BMH ceramic possesses a fast charge–discharge speed with high discharge power density of 2.9 MW cm⁻³. All the results make this lead-free relaxor ferroelectric ceramic a promising potential candidate for high-temperature energy-storage capacitor applications. © 2021 The Authors. Advanced Energy and Sustainability Research published by Wiley-VCH GmbH.

Original language	English
Article number	2100015
Journal	Advanced Energy and Sustainability Research
Volume	2
Issue number	6
Online published	25 Feb 2021
DOIs	https://doi.org/10.1002/aesr.202100015
Publication status	Published - Jun 2021
Externally published	Yes

Funding

S.Z. acknowledges the Australian Research Council for the support (FT140100698). The authors acknowledge the use of facilities within the UOW Electron Microscopy Centre.

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Research Keywords

ceramics
energy density
energy storage
relaxor
temperature stability

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@article{6f54114d7d30421d9bfb17248d16108c,

title = "Enhanced Energy-Storage Properties and Good Temperature Stability in 0.92(Sr0.7Bi0.2)TiO3–0.08Bi(Mg0.5Hf0.5)O3 Relaxor Ferroelectric Ceramic",

abstract = "Herein, the (1 − x)(Sr0.7Bi0.2)TiO3–xBi(Mg0.5Hf0.5)O3 (SBT–100xBMH, x = 0.04–0.10) relaxor ferroelectric ceramics are fabricated via the high-temperature solid-state reaction method. Dielectric and ferroelectric measurements reveal a typical relaxor characteristic with diffused and frequency-dependent dielectric peaks. The characteristic Weibull breakdown strength (BDS) of 470 kV cm−1 with satisfied reliability is obtained by DC breakdown measurement. A maximum recoverable energy density of 3.5 J cm−3 with the corresponding energy efficiency of 92\% is simultaneously achieved at 380 kV cm−1. The recoverable energy density exhibits minor degradations from ambient temperature to 200 °C with variation below 20\%, whereas the energy efficiency is maintained above 90\%. In addition, the SBT–8BMH ceramic possesses a fast charge–discharge speed with high discharge power density of 2.9 MW cm−3. All the results make this lead-free relaxor ferroelectric ceramic a promising potential candidate for high-temperature energy-storage capacitor applications. {\textcopyright} 2021 The Authors. Advanced Energy and Sustainability Research published by Wiley-VCH GmbH.",

keywords = "ceramics, energy density, energy storage, relaxor, temperature stability",

author = "Xi Kong and Letao Yang and Zhenxiang Cheng and Shujun Zhang",

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doi = "10.1002/aesr.202100015",

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Enhanced Energy-Storage Properties and Good Temperature Stability in 0.92(Sr_0.7Bi_0.2)TiO₃–0.08Bi(Mg_0.5Hf_0.5)O₃ Relaxor Ferroelectric Ceramic. / Kong, Xi; Yang, Letao; Cheng, Zhenxiang et al.
In: Advanced Energy and Sustainability Research, Vol. 2, No. 6, 2100015, 06.2021.

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

TY - JOUR

T1 - Enhanced Energy-Storage Properties and Good Temperature Stability in 0.92(Sr0.7Bi0.2)TiO3–0.08Bi(Mg0.5Hf0.5)O3 Relaxor Ferroelectric Ceramic

AU - Kong, Xi

AU - Yang, Letao

AU - Cheng, Zhenxiang

AU - Zhang, Shujun

PY - 2021/6

Y1 - 2021/6

N2 - Herein, the (1 − x)(Sr0.7Bi0.2)TiO3–xBi(Mg0.5Hf0.5)O3 (SBT–100xBMH, x = 0.04–0.10) relaxor ferroelectric ceramics are fabricated via the high-temperature solid-state reaction method. Dielectric and ferroelectric measurements reveal a typical relaxor characteristic with diffused and frequency-dependent dielectric peaks. The characteristic Weibull breakdown strength (BDS) of 470 kV cm−1 with satisfied reliability is obtained by DC breakdown measurement. A maximum recoverable energy density of 3.5 J cm−3 with the corresponding energy efficiency of 92% is simultaneously achieved at 380 kV cm−1. The recoverable energy density exhibits minor degradations from ambient temperature to 200 °C with variation below 20%, whereas the energy efficiency is maintained above 90%. In addition, the SBT–8BMH ceramic possesses a fast charge–discharge speed with high discharge power density of 2.9 MW cm−3. All the results make this lead-free relaxor ferroelectric ceramic a promising potential candidate for high-temperature energy-storage capacitor applications. © 2021 The Authors. Advanced Energy and Sustainability Research published by Wiley-VCH GmbH.

AB - Herein, the (1 − x)(Sr0.7Bi0.2)TiO3–xBi(Mg0.5Hf0.5)O3 (SBT–100xBMH, x = 0.04–0.10) relaxor ferroelectric ceramics are fabricated via the high-temperature solid-state reaction method. Dielectric and ferroelectric measurements reveal a typical relaxor characteristic with diffused and frequency-dependent dielectric peaks. The characteristic Weibull breakdown strength (BDS) of 470 kV cm−1 with satisfied reliability is obtained by DC breakdown measurement. A maximum recoverable energy density of 3.5 J cm−3 with the corresponding energy efficiency of 92% is simultaneously achieved at 380 kV cm−1. The recoverable energy density exhibits minor degradations from ambient temperature to 200 °C with variation below 20%, whereas the energy efficiency is maintained above 90%. In addition, the SBT–8BMH ceramic possesses a fast charge–discharge speed with high discharge power density of 2.9 MW cm−3. All the results make this lead-free relaxor ferroelectric ceramic a promising potential candidate for high-temperature energy-storage capacitor applications. © 2021 The Authors. Advanced Energy and Sustainability Research published by Wiley-VCH GmbH.

KW - ceramics

KW - energy density

KW - energy storage

KW - relaxor

KW - temperature stability

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DO - 10.1002/aesr.202100015

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