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Orientation microscopy–assisted grain boundary analysis for protonic ceramic cell electrolytes

  • Sooraj Patel
  • , Sumit Goswami
  • , Pralay Paul
  • , Fan Liu
  • , Shuanglin Zheng
  • , Julian E. Sabisch
  • , Chuancheng Duan
  • , Thirumalai Venkatesan
  • , Hanjong Paik
  • , Hanping Ding
  • , Pejman Kazempoor
  • , Shuozhi Xu
  • , Dong Ding
  • , Iman Ghamarian

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

Grain boundaries in protonic ceramic cell (PCC) electrolytes hinder proton transport, reducing interfacial conductivity. In multicomponent PCC electrolytes, the inclusion of sintering aids further accentuates the complexity of grain boundaries. In this study, we synthesize nanocrystalline BaCe0.4Zr0.4Y0.1Yb0.1O3−δ thin films via pulsed laser deposition and analyze their grain boundary character distributions using orientation data collected by precession electron diffraction technique. The results reveal an anisotropic distribution of grain boundary characters, with notably high populations of 180°-tilt and twist grain boundaries. These findings provide critical insights into identifying the predominant grain boundaries in this PCC electrolyte material, assessing the vast five-dimensional grain boundary space.

Original languageEnglish
Article numbere20371
JournalJournal of the American Ceramic Society
Volume108
Issue number5
Early online dateJan 7 2025
DOIs
StateE-pub ahead of print - Jan 7 2025

Keywords

  • grain boundary character distribution
  • precession electron diffraction
  • protonic conductor
  • pulsed laser deposition
  • transmission electron microscopy

INL Publication Number

  • INL/JOU-24-82578
  • 192524

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