High discharge energy density in novel K1/2Bi1/2TiO3-BiFeO3 based relaxor ferroelectrics

Xinzhen Wang; Yongbo Fan; Zhang Bin Zhang; Ali Mostaed; Linhao Li; Antonio Feteira; Dawei Wang; Derek C. Sinclair; Ge Wang; Ian M. Reaney

doi:10.1016/j.jeurceramsoc.2022.08.020

High discharge energy density in novel K_1/2Bi_1/2TiO₃-BiFeO₃ based relaxor ferroelectrics

Xinzhen Wang
, Yongbo Fan
, Zhang Bin Zhang
, Ali Mostaed
, Linhao Li
, Antonio Feteira
, Dawei Wang
, Derek C. Sinclair
, Ge Wang^*
, Ian M. Reaney^*

^*Corresponding author for this work

University of Sheffield
Shandong University of Science and Technology
Shenzhen Institute of Advanced Technology
University of Oxford
Beijing University of Chemical Technology
Sheffield Hallam University
University of Manchester

Research output: Contribution to journal › Article › peer-review

37 Scopus citations

Abstract

An increasing number of new dielectrics are being reported for the development of next-generation ceramic capacitors for power electronics used in clean energy technologies. Here, high discharge energy density (W_dis) ~6.1 J cm⁻³ with efficiency (η)~72% under a pulsed field (E_max) of 410 kV cm⁻¹ is reported along with temperature stability up to 150 °C (E_max = 200 kV cm⁻¹) for 0.5 K_0.5Bi_0.5TiO₃-0.42BiFeO₃-0.08Sm(Mg_2/3Nb_1/3)O₃ (KBT-BF-SMN) bulk ceramics. The optimised composition is chemically heterogeneous but electrically homogenous, similar to several BiFeO₃-based dielectrics reported previously and adding to the growing body of evidence that electrical (measured at weak-field) not chemical homogeneity is the best guide to increased E_max and enhanced energy density. KBT-BF-SMN ceramics are therefore considered as promising candidates for pulsed power and power electronics applications.

Original language	English
Pages (from-to)	7381-7387
Number of pages	7
Journal	Journal of the European Ceramic Society
Volume	42
Issue number	15
DOIs	https://doi.org/10.1016/j.jeurceramsoc.2022.08.020
State	Published - Dec 2022
Externally published	Yes

Keywords

Bismuth ferrite
Ceramic capacitors
Dielectrics
Energy density
Power electronics

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10.1016/j.jeurceramsoc.2022.08.020

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@article{081b2313b340450c982cd5ccbc52a965,

title = "High discharge energy density in novel K1/2Bi1/2TiO3-BiFeO3 based relaxor ferroelectrics",

abstract = "An increasing number of new dielectrics are being reported for the development of next-generation ceramic capacitors for power electronics used in clean energy technologies. Here, high discharge energy density (Wdis) \textasciitilde{}6.1 J cm−3 with efficiency (η)\textasciitilde{}72\% under a pulsed field (Emax) of 410 kV cm−1 is reported along with temperature stability up to 150 °C (Emax = 200 kV cm−1) for 0.5 K0.5Bi0.5TiO3-0.42BiFeO3-0.08Sm(Mg2/3Nb1/3)O3 (KBT-BF-SMN) bulk ceramics. The optimised composition is chemically heterogeneous but electrically homogenous, similar to several BiFeO3-based dielectrics reported previously and adding to the growing body of evidence that electrical (measured at weak-field) not chemical homogeneity is the best guide to increased Emax and enhanced energy density. KBT-BF-SMN ceramics are therefore considered as promising candidates for pulsed power and power electronics applications.",

keywords = "Bismuth ferrite, Ceramic capacitors, Dielectrics, Energy density, Power electronics",

author = "Xinzhen Wang and Yongbo Fan and \{Bin Zhang\}, Zhang and Ali Mostaed and Linhao Li and Antonio Feteira and Dawei Wang and Sinclair, \{Derek C.\} and Ge Wang and Reaney, \{Ian M.\}",

note = "Publisher Copyright: {\textcopyright} 2022 The Authors",

year = "2022",

month = dec,

doi = "10.1016/j.jeurceramsoc.2022.08.020",

language = "英语",

volume = "42",

pages = "7381--7387",

journal = "Journal of the European Ceramic Society",

issn = "0955-2219",

publisher = "Elsevier B.V.",

number = "15",

}

TY - JOUR

T1 - High discharge energy density in novel K1/2Bi1/2TiO3-BiFeO3 based relaxor ferroelectrics

AU - Wang, Xinzhen

AU - Fan, Yongbo

AU - Bin Zhang, Zhang

AU - Mostaed, Ali

AU - Li, Linhao

AU - Feteira, Antonio

AU - Wang, Dawei

AU - Sinclair, Derek C.

AU - Wang, Ge

AU - Reaney, Ian M.

PY - 2022/12

Y1 - 2022/12

N2 - An increasing number of new dielectrics are being reported for the development of next-generation ceramic capacitors for power electronics used in clean energy technologies. Here, high discharge energy density (Wdis) ~6.1 J cm−3 with efficiency (η)~72% under a pulsed field (Emax) of 410 kV cm−1 is reported along with temperature stability up to 150 °C (Emax = 200 kV cm−1) for 0.5 K0.5Bi0.5TiO3-0.42BiFeO3-0.08Sm(Mg2/3Nb1/3)O3 (KBT-BF-SMN) bulk ceramics. The optimised composition is chemically heterogeneous but electrically homogenous, similar to several BiFeO3-based dielectrics reported previously and adding to the growing body of evidence that electrical (measured at weak-field) not chemical homogeneity is the best guide to increased Emax and enhanced energy density. KBT-BF-SMN ceramics are therefore considered as promising candidates for pulsed power and power electronics applications.

AB - An increasing number of new dielectrics are being reported for the development of next-generation ceramic capacitors for power electronics used in clean energy technologies. Here, high discharge energy density (Wdis) ~6.1 J cm−3 with efficiency (η)~72% under a pulsed field (Emax) of 410 kV cm−1 is reported along with temperature stability up to 150 °C (Emax = 200 kV cm−1) for 0.5 K0.5Bi0.5TiO3-0.42BiFeO3-0.08Sm(Mg2/3Nb1/3)O3 (KBT-BF-SMN) bulk ceramics. The optimised composition is chemically heterogeneous but electrically homogenous, similar to several BiFeO3-based dielectrics reported previously and adding to the growing body of evidence that electrical (measured at weak-field) not chemical homogeneity is the best guide to increased Emax and enhanced energy density. KBT-BF-SMN ceramics are therefore considered as promising candidates for pulsed power and power electronics applications.

KW - Bismuth ferrite

KW - Ceramic capacitors

KW - Dielectrics

KW - Energy density

KW - Power electronics

UR - https://www.scopus.com/pages/publications/85136740527

U2 - 10.1016/j.jeurceramsoc.2022.08.020

DO - 10.1016/j.jeurceramsoc.2022.08.020

M3 - 文章

AN - SCOPUS:85136740527

SN - 0955-2219

VL - 42

SP - 7381

EP - 7387

JO - Journal of the European Ceramic Society

JF - Journal of the European Ceramic Society

IS - 15

ER -

High discharge energy density in novel K_1/2Bi_1/2TiO₃-BiFeO₃ based relaxor ferroelectrics

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Keywords

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