Lead-free (Ba,Sr)TiO3 – BiFeO3 based multilayer ceramic capacitors with high energy density

Abstract

High recoverable energy density (10 J cm−3) multilayers have been fabricated from lead-free 0.61BiFeO3-0.33(Ba0.8Sr0.2)TiO3-0.06La(Mg2/3Nb1/3)O3 ceramics. High breakdown strength > 730 kV cm-1 was achieved through the optimisation of multilayer processing to produce defect-free dielectric layers 7 μm thick. Excellent temperature, frequency, fatigue stability and fast charge-discharge speed were observed in the multilayer, critical for their potential use in power electronics.

Metadata

Authors/Creators:

Wang, G.
Lu, Z.
Li, J.
Ji, H.
Yang, H.
Li, L..
Sun, S.
Feteira, A.
Yang, H.
Zuo, R.
Wang, D. https://orcid.org/0000-0001-6957-2494
Reaney, I.M. https://orcid.org/0000-0003-3893-6544

© 2019 Elsevier Ltd. This is an author produced version of a paper subsequently published in Journal of the European Ceramic Society. Uploaded in accordance with the publisher's self-archiving policy. Article available under the terms of the CC-BY-NC-ND licence (https://creativecommons.org/licenses/by-nc-nd/4.0/).

Keywords:

Multilayer; Ceramic capacitor; Energy storage; Lead-free; Bismuth ferrite

Dates: