Improved Energy Storage Properties Accompanied by Enhanced Interface Polarization in Annealed Microwave-Sintered BST

Zhe Song; Shujun Zhang; Hanxing Liu; Hua Hao; Minghe Cao; Qi Li; Qing Wang; Zhonghua Yao; Zhijian Wang; Michael T Lanagan

doi:10.1111/jace.13741

Improved Energy Storage Properties Accompanied by Enhanced Interface Polarization in Annealed Microwave-Sintered BST

Zhe Song
, Shujun Zhang
, Hanxing Liu
, Hua Hao
, Minghe Cao
, Qi Li
, Qing Wang
, Zhonghua Yao
, Zhijian Wang
, Michael T Lanagan

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

103 Citations (Scopus)

Abstract

Microwave-sintering (MWS) technique was employed to fabricate dense (Ba_0.4Sr_0.6)TiO₃ (BST) ceramics. With respect to the high dielectric loss at room temperature, induced by the formation of oxygen defects during the MWS under vacuum atmosphere (-60 kPa), the as-sintered samples were thermally annealed in air to reduce tanδ and recover the insulating performance. Accompanied by the decreased tanδ, the energy storage properties for annealed MWS BST were optimized, with increasing energy density (γ) from 0.77 to 1.15 J/cm³ and energy efficiency (η) from 60% to 82%. The lower oxygen vacancy concentrations were believed to account for the enhanced insulating characteristics of grain boundaries and contribute to the improved properties after annealing. Electrical characterization of grain and grain boundary by impedance spectroscopy demonstrated that the annealing preferentially modified the grain boundary. In addition, resistances extracted from the high temperature impedance analysis were found to be inadequate for evaluating the electrical characteristics of materials affected by extrinsic mechanisms, such as the interfacial polarization. For comparison, annealing effect on energy storage properties were also discussed for conventionally sintered BST. © 2015 The American Ceramic Society.

Original language	English
Pages (from-to)	3212-3222
Journal	Journal of the American Ceramic Society
Volume	98
Issue number	10
DOIs	https://doi.org/10.1111/jace.13741
Publication status	Published - 1 Oct 2015
Externally published	Yes

Bibliographical note

Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

Funding

This work was supported by Natural Science Foundation of China (no.51372191), International Science and Technology Cooperation Program of China (2011DFA52680) and the National Key Basic Research Program of China (973 Program) (no. 2015CB654601).

UN SDGs

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

SDG 7 Affordable and Clean Energy

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title = "Improved Energy Storage Properties Accompanied by Enhanced Interface Polarization in Annealed Microwave-Sintered BST",

abstract = "Microwave-sintering (MWS) technique was employed to fabricate dense (Ba0.4Sr0.6)TiO3 (BST) ceramics. With respect to the high dielectric loss at room temperature, induced by the formation of oxygen defects during the MWS under vacuum atmosphere (-60 kPa), the as-sintered samples were thermally annealed in air to reduce tanδ and recover the insulating performance. Accompanied by the decreased tanδ, the energy storage properties for annealed MWS BST were optimized, with increasing energy density (γ) from 0.77 to 1.15 J/cm3 and energy efficiency (η) from 60\% to 82\%. The lower oxygen vacancy concentrations were believed to account for the enhanced insulating characteristics of grain boundaries and contribute to the improved properties after annealing. Electrical characterization of grain and grain boundary by impedance spectroscopy demonstrated that the annealing preferentially modified the grain boundary. In addition, resistances extracted from the high temperature impedance analysis were found to be inadequate for evaluating the electrical characteristics of materials affected by extrinsic mechanisms, such as the interfacial polarization. For comparison, annealing effect on energy storage properties were also discussed for conventionally sintered BST. {\textcopyright} 2015 The American Ceramic Society.",

author = "Zhe Song and Shujun Zhang and Hanxing Liu and Hua Hao and Minghe Cao and Qi Li and Qing Wang and Zhonghua Yao and Zhijian Wang and Lanagan, \{Michael T\}",

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T1 - Improved Energy Storage Properties Accompanied by Enhanced Interface Polarization in Annealed Microwave-Sintered BST

AU - Song, Zhe

AU - Zhang, Shujun

AU - Liu, Hanxing

AU - Hao, Hua

AU - Cao, Minghe

AU - Li, Qi

AU - Wang, Qing

AU - Yao, Zhonghua

AU - Wang, Zhijian

AU - Lanagan, Michael T

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PY - 2015/10/1

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N2 - Microwave-sintering (MWS) technique was employed to fabricate dense (Ba0.4Sr0.6)TiO3 (BST) ceramics. With respect to the high dielectric loss at room temperature, induced by the formation of oxygen defects during the MWS under vacuum atmosphere (-60 kPa), the as-sintered samples were thermally annealed in air to reduce tanδ and recover the insulating performance. Accompanied by the decreased tanδ, the energy storage properties for annealed MWS BST were optimized, with increasing energy density (γ) from 0.77 to 1.15 J/cm3 and energy efficiency (η) from 60% to 82%. The lower oxygen vacancy concentrations were believed to account for the enhanced insulating characteristics of grain boundaries and contribute to the improved properties after annealing. Electrical characterization of grain and grain boundary by impedance spectroscopy demonstrated that the annealing preferentially modified the grain boundary. In addition, resistances extracted from the high temperature impedance analysis were found to be inadequate for evaluating the electrical characteristics of materials affected by extrinsic mechanisms, such as the interfacial polarization. For comparison, annealing effect on energy storage properties were also discussed for conventionally sintered BST. © 2015 The American Ceramic Society.

AB - Microwave-sintering (MWS) technique was employed to fabricate dense (Ba0.4Sr0.6)TiO3 (BST) ceramics. With respect to the high dielectric loss at room temperature, induced by the formation of oxygen defects during the MWS under vacuum atmosphere (-60 kPa), the as-sintered samples were thermally annealed in air to reduce tanδ and recover the insulating performance. Accompanied by the decreased tanδ, the energy storage properties for annealed MWS BST were optimized, with increasing energy density (γ) from 0.77 to 1.15 J/cm3 and energy efficiency (η) from 60% to 82%. The lower oxygen vacancy concentrations were believed to account for the enhanced insulating characteristics of grain boundaries and contribute to the improved properties after annealing. Electrical characterization of grain and grain boundary by impedance spectroscopy demonstrated that the annealing preferentially modified the grain boundary. In addition, resistances extracted from the high temperature impedance analysis were found to be inadequate for evaluating the electrical characteristics of materials affected by extrinsic mechanisms, such as the interfacial polarization. For comparison, annealing effect on energy storage properties were also discussed for conventionally sintered BST. © 2015 The American Ceramic Society.

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UR - https://www.scopus.com/pages/publications/84943256998#tab=impact

U2 - 10.1111/jace.13741

DO - 10.1111/jace.13741

M3 - RGC 21 - Publication in refereed journal

SN - 0002-7820

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EP - 3222

JO - Journal of the American Ceramic Society

JF - Journal of the American Ceramic Society

IS - 10

ER -

Improved Energy Storage Properties Accompanied by Enhanced Interface Polarization in Annealed Microwave-Sintered BST

Abstract

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