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

  • Ge Wang
  • , Zhilun Lu
  • , Jinglei Li
  • , Hongfen Ji
  • , Huijing Yang
  • , Linhao Li
  • , Shikuan Sun
  • , Antonio Feteira
  • , Haoguang Yang
  • , Ruzhong Zuo
  • , Dawei Wang
  • , Ian M. Reaney

Research output: Contribution to journalArticlepeer-review

98 Scopus citations

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.

Original languageEnglish
Pages (from-to)1779-1783
Number of pages5
JournalJournal of the European Ceramic Society
Volume40
Issue number4
DOIs
StatePublished - Apr 2020

Keywords

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

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