DOE OSTI · 3030603
How Interface Evolution at the Nanoscale Dictates Protonic Ceramic Cell Behavior
Abstract
Understanding the effects of heterointerfaces in nanodevices remains a challenge in interface engineering for systems applied in solid oxide fuel cells, catalysis, sensors, and memristors [1]. Previous studies have shown that the presence of interfaces in ceramic oxide nanodevices affects their impedance properties compared to bulk systems [2]. In this work, we analyze a thin-film model system designed to study the interfaces between representative electrode and electrolyte materials employed in protonic ceramic electrochemical cells for the reversible conversion of hydrogen o electricity. The investigated device features a 21-layer architecture that alternates between an electrode material PBSCF (PrBa 0.5 Sr 0.5 Co 1.5 Fe 0.5 O 5+ϵ ) and a proton-conducting electrolyte BZY (BaZr 0.8 Y 0.2 O 3-δ ), with uniform 20 nm thickness for each layer. Here, the device was fabricated using Pulsed Laser Deposition (PLD) and supported on a conductive Nb-doped STO (Nb-SrTiO 3 ) substrate.
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dos Santos, Gabriel T. [Northwestern University, Evanston, IL (United States)], Griffin, Elizabeth [Northwestern University, Evanston, IL (United States)], Chery, Paul [Northwestern University, Evanston, IL (United States)], Cheng, Yongfa [Northwestern University, Evanston, IL (United States)], Haile, Sossina M. [Northwestern University, Evanston, IL (United States)], Reis, Roberto dos [Northwestern University, Evanston, IL (United States)], Dravid, Vinayak P. [Northwestern University, Evanston, IL (United States)]. 2025-07-25. How Interface Evolution at the Nanoscale Dictates Protonic Ceramic Cell Behavior. https://doi.org/10.1093/mam%2Fozaf048.683
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