Wang, G., Lu, Z., Yang, H. et al. (9 more authors) (2020) Fatigue resistant lead-free multilayer ceramic capacitors with ultrahigh energy density. Journal of Materials Chemistry A, 8 (22). pp. 11414-11423. ISSN 2050-7488
Abstract
The critical role of electrical homogeneity in optimising electric-field breakdown strength (BDS) and energy storage performance in high energy density lead-free capacitors is demonstrated, resulting in exceptional BDS for bulk ceramics and multilayers with values of ~260 and ~950 kV cm-1, respectively. The high BDS gives rise to the record-performance recoverable energy density (Wrec) of 13.8 J cm-3 with an efficiency (η) of 81% in multilayers up to now among all lead/lead-free dielectric materials. The multilayers are temperature stable up to 100 °C, stable with respect to frequency in the range 10-2 to 102 Hz, low strain and fatigue-resistant up to 104 cycles (Wrec variation < 10%). These properties show promise for practical use in pulsed power systems.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2020 The Authors. This article is licensed under a Creative Commons Attribution 3.0 Unported Licence https://creativecommons.org/licenses/by/3.0/ |
Keywords: | energy storage; multilayer ceramic capacitors; bismuth ferrite; lead-free; fatigue-resistant |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Materials Science and Engineering (Sheffield) |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 20 May 2020 18:35 |
Last Modified: | 18 Nov 2021 15:07 |
Published Version: | https://pubs.rsc.org/en/content/articlelanding/202... |
Status: | Published |
Publisher: | Royal Society of Chemistry (RSC) |
Refereed: | Yes |
Identification Number: | 10.1039/d0ta00216j |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:160994 |