MRS Meetings and Events

 

EL06.08.03 2024 MRS Spring Meeting

Effect of Strain on The Proton Conduction in Multi-Oriented BaZr0.9Y0.1O3−δ Thin Film

When and Where

Apr 25, 2024
2:30pm - 2:45pm

Room 343, Level 3, Summit

Presenter

Co-Author(s)

Artur Braun1,Muhammad Saleem1,Qianli Chen2

Empa1,Shanghai Jiao Tong University Joint Institute2

Abstract

Artur Braun1,Muhammad Saleem1,Qianli Chen2

Empa1,Shanghai Jiao Tong University Joint Institute2
For proton-conducting ceramic fuel cells, BaZr0.9Y0.1O3−δ (BZY10) is an attractive material due to its high proton conductivity and stability. The physical and chemical fundamentals of proton conduction in sintered pellets and thin films and their heterostructures have been explored in several studies. The search for the effect of crystallographic orientation, grains, and grain boundaries on proton transport is yet an ongoing quest. We present a study [1] on the proton conduction in a self-assembled multi-oriented BZY10 thin film grown on top of a (110) NdGaO3 substrate. The multiple orientations are composed of different lattices, which provide a platform to study the lattice-dependent conductivity through different orientations in the vicinity of grain boundary between them and the substrate. The crystalline stacking of each orientation is determined by X-ray diffraction analysis and scanning transmission electron microscopy. The transport measurements are carried out under different gas atmospheres. The highest conductivity is 3 mS/cm at 400 °C and found under a wet H2 environment along with an increased lattice parameter of 4.208 Å, while under O2 and even reducing Ar atmosphere, the film shows lower conductivity and smaller lattice parameter. Our findings not only demonstrate the role of crystal lattice for conduction properties but also illustrate the importance of self-assembled strategies to achieve high proton conduction in BZY10 thin films.<br/><br/>[1] M. S. Saleem, Q. Chen, N. A. Shepelin, S. Dolabella, M. D. Rossell, X. Zhang, C. X. Kronawitter, F. La Mattina, A. Braun, The Role of Strain in Proton Conduction in Multi-Oriented BaZr<sub>0.9</sub>Y<sub>0.1</sub>O<sub>3−δ</sub> Thin Film, <i>ACS Appl. Mater. Interfaces</i> 2022, 14, 50, 55915–55924,<br/>https://doi.org/10.1021/acsami.2c12657

Keywords

electronic structure

Symposium Organizers

Aiping Chen, Los Alamos National Laboratory
Woo Seok Choi, Sungkyunkwan University
Marta Gibert, Technische Universität Wien
Megan Holtz, Colorado School of Mines

Symposium Support

Silver
Korea Vacuum Tech, Ltd.

Bronze
Center for Integrated Nanotechnologies, Los Alamos National Laboratory
Radiant Technologies, Inc.

Publishing Alliance

MRS publishes with Springer Nature