Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Out-of-plane electrochemical transport in all-thin-film hetero-epitaxial solid oxide fuel cell structures

Published

Author(s)

Huairuo Zhang, Albert Davydov, Yangang Liang, Xiaohang Zhang, Yaoyu Ren, Seunghun Lee, H.M. Jaim, Eric Marksz, Takeuchi Ichiro, Haiyan Tan, Leonid Bendersky, Chris Kucharczyk, Ruiyun Huang, Sossina Haile

Abstract

We have fabricated all-thin-film solid oxide fuel cell (SOFC) heterostructures and investigated the transport properties of Sm0.2Ce0.8O2-δ (SDC20) in an out-of-plane measurement geometry. The SOFC heterostructures, consisting of a bottom SrRuO3 (SRO) or Ba0.93La0.07SnO3 (BLSO) electrode and a SDC20 electrolyte, were fabricated on SrTiO3 (001) substrates via pulsed laser deposition. The hetero-epitaxial nature and atomically sharp interfaces between the electrolyte and the electrode were confirmed by X-ray diffraction and high-resolution scanning transmission electron microscopy (STEM). Out-of-plane electrochemical impedance spectroscopy (EIS) measurements indicate that the electrochemical properties of the SDC20 thin films are quantitatively consistent with that of bulk SDC20 in a wide temperature range from 350 °C to 550 °C. Our results demonstrate that prototypical out-of-plane hetero-epitaxial devices can serve as an ideal platform for direct investigation of the intrinsic transport properties of electrochemical materials in single-crystal-like structures with well-defined interfaces. In addition, by using perovskite conducting films as bottom electrodes, the overall thickness of the hetero-epitaxial devices is further reduced.
Citation
AIP Advances

Keywords

hetero-epitaxial films, solid oxide fuel cell, electrochemical device, out-of-plane measurement, microelectrode, samarium doped ceria, strontium ruthenium oxide

Citation

Zhang, H. , Davydov, A. , Liang, Y. , Zhang, X. , Ren, Y. , Lee, S. , Jaim, H. , Marksz, E. , Ichiro, T. , Tan, H. , Bendersky, L. , Kucharczyk, C. , Huang, R. and Haile, S. (2025), Out-of-plane electrochemical transport in all-thin-film hetero-epitaxial solid oxide fuel cell structures, AIP Advances, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=959758 (Accessed June 7, 2025)

Issues

If you have any questions about this publication or are having problems accessing it, please contact [email protected].

Created June 6, 2025, Updated June 7, 2025
Was this page helpful?