Mechanism of enhanced energy storage density in AgNbO3-based lead-free antiferroelectrics

Zhilun Lu; Weichao Bao; Ge Wang; Shi Kuan Sun; Linhao Li; Jinglei Li; Huijing Yang; Hongfen Ji; Antonio Feteira; Dejun Li; Fangfang Xu; Annette K. Kleppe; Dawei Wang; Shi Yu Liu; Ian M. Reaney

doi:10.1016/j.nanoen.2020.105423

Mechanism of enhanced energy storage density in AgNbO₃-based lead-free antiferroelectrics

Zhilun Lu
, Weichao Bao
, Ge Wang
, Shi Kuan Sun
, Linhao Li
, Jinglei Li
, Huijing Yang
, Hongfen Ji
, Antonio Feteira
, Dejun Li
, Fangfang Xu
, Annette K. Kleppe
, Dawei Wang^*
, Shi Yu Liu
, Ian M. Reaney

^*Corresponding author for this work

University of Sheffield
Henry Royce Institute
CAS - Shanghai Institute of Ceramics
Xi'an Jiaotong University
Tangshan Normal University
Xi'an Technological University
Sheffield Hallam University
Tianjin Normal University
Diamond Light Source

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

309 Scopus citations

Abstract

The mechanisms underpinning high energy storage density in lead-free Ag_1–3xNd_xTa_yNb_1-yO₃ antiferroelectric (AFE) ceramics have been investigated. Rietveld refinements of in-situ synchrotron X-ray data reveal that the structure remains quadrupled and orthorhombic under electric field (E) but adopts a non-centrosymmetric space group, Pmc2₁, in which the cations exhibit a ferrielectric configuration. Nd and Ta doping both stabilize the AFE structure, thereby increasing the AFE-ferrielectric switching field from 150 to 350 kV cm⁻¹. Domain size and correlation length of AFE/ferrielectric coupling reduce with Nd doping, leading to slimmer hysteresis loops. The maximum polarization (P_max) is optimized through A-site aliovalent doping which also decreases electrical conductivity, permitting the application of a larger E. These effects combine to enhance energy storage density to give W_rec = 6.5 J cm⁻³ for Ag_0.97Nd_0.01Ta_0.20Nb_0.80O₃.

Original language	English
Article number	105423
Journal	Nano Energy
Volume	79
DOIs	https://doi.org/10.1016/j.nanoen.2020.105423
State	Published - Jan 2021
Externally published	Yes

UN SDGs

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

SDG 7 Affordable and Clean Energy

Keywords

Antiferroelectrics
Energy storage capacitors
In-situ synchrotron X-ray diffraction
Silver niobate

Access to Document

10.1016/j.nanoen.2020.105423

Cite this

@article{beb58d3eb9e54237a9a12f62bb39d76e,

title = "Mechanism of enhanced energy storage density in AgNbO3-based lead-free antiferroelectrics",

abstract = "The mechanisms underpinning high energy storage density in lead-free Ag1–3xNdxTayNb1-yO3 antiferroelectric (AFE) ceramics have been investigated. Rietveld refinements of in-situ synchrotron X-ray data reveal that the structure remains quadrupled and orthorhombic under electric field (E) but adopts a non-centrosymmetric space group, Pmc21, in which the cations exhibit a ferrielectric configuration. Nd and Ta doping both stabilize the AFE structure, thereby increasing the AFE-ferrielectric switching field from 150 to 350 kV cm−1. Domain size and correlation length of AFE/ferrielectric coupling reduce with Nd doping, leading to slimmer hysteresis loops. The maximum polarization (Pmax) is optimized through A-site aliovalent doping which also decreases electrical conductivity, permitting the application of a larger E. These effects combine to enhance energy storage density to give Wrec = 6.5 J cm−3 for Ag0.97Nd0.01Ta0.20Nb0.80O3.",

keywords = "Antiferroelectrics, Energy storage capacitors, In-situ synchrotron X-ray diffraction, Silver niobate",

author = "Zhilun Lu and Weichao Bao and Ge Wang and Sun, \{Shi Kuan\} and Linhao Li and Jinglei Li and Huijing Yang and Hongfen Ji and Antonio Feteira and Dejun Li and Fangfang Xu and Kleppe, \{Annette K.\} and Dawei Wang and Liu, \{Shi Yu\} and Reaney, \{Ian M.\}",

note = "Publisher Copyright: {\textcopyright} 2020 The Authors",

year = "2021",

month = jan,

doi = "10.1016/j.nanoen.2020.105423",

language = "英语",

volume = "79",

journal = "Nano Energy",

issn = "2211-2855",

publisher = "Elsevier B.V.",

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TY - JOUR

T1 - Mechanism of enhanced energy storage density in AgNbO3-based lead-free antiferroelectrics

AU - Lu, Zhilun

AU - Bao, Weichao

AU - Wang, Ge

AU - Sun, Shi Kuan

AU - Li, Linhao

AU - Li, Jinglei

AU - Yang, Huijing

AU - Ji, Hongfen

AU - Feteira, Antonio

AU - Li, Dejun

AU - Xu, Fangfang

AU - Kleppe, Annette K.

AU - Wang, Dawei

AU - Liu, Shi Yu

AU - Reaney, Ian M.

PY - 2021/1

Y1 - 2021/1

N2 - The mechanisms underpinning high energy storage density in lead-free Ag1–3xNdxTayNb1-yO3 antiferroelectric (AFE) ceramics have been investigated. Rietveld refinements of in-situ synchrotron X-ray data reveal that the structure remains quadrupled and orthorhombic under electric field (E) but adopts a non-centrosymmetric space group, Pmc21, in which the cations exhibit a ferrielectric configuration. Nd and Ta doping both stabilize the AFE structure, thereby increasing the AFE-ferrielectric switching field from 150 to 350 kV cm−1. Domain size and correlation length of AFE/ferrielectric coupling reduce with Nd doping, leading to slimmer hysteresis loops. The maximum polarization (Pmax) is optimized through A-site aliovalent doping which also decreases electrical conductivity, permitting the application of a larger E. These effects combine to enhance energy storage density to give Wrec = 6.5 J cm−3 for Ag0.97Nd0.01Ta0.20Nb0.80O3.

AB - The mechanisms underpinning high energy storage density in lead-free Ag1–3xNdxTayNb1-yO3 antiferroelectric (AFE) ceramics have been investigated. Rietveld refinements of in-situ synchrotron X-ray data reveal that the structure remains quadrupled and orthorhombic under electric field (E) but adopts a non-centrosymmetric space group, Pmc21, in which the cations exhibit a ferrielectric configuration. Nd and Ta doping both stabilize the AFE structure, thereby increasing the AFE-ferrielectric switching field from 150 to 350 kV cm−1. Domain size and correlation length of AFE/ferrielectric coupling reduce with Nd doping, leading to slimmer hysteresis loops. The maximum polarization (Pmax) is optimized through A-site aliovalent doping which also decreases electrical conductivity, permitting the application of a larger E. These effects combine to enhance energy storage density to give Wrec = 6.5 J cm−3 for Ag0.97Nd0.01Ta0.20Nb0.80O3.

KW - Antiferroelectrics

KW - Energy storage capacitors

KW - In-situ synchrotron X-ray diffraction

KW - Silver niobate

UR - https://www.scopus.com/pages/publications/85092318832

U2 - 10.1016/j.nanoen.2020.105423

DO - 10.1016/j.nanoen.2020.105423

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