Revealing the Intrinsic Oxygen Evolution Reaction Activity of Perovskite Oxides across Conductivity Ranges Using Thin Film Model Systems
OER catalyst are essentially required in electrolysis applications producing green hydrogen as chemical energy carrier. In this paper, we discuss how intrinsic electrochemical activity of OER catalyst can be assessed experimentally in different thin film geometries. This is particularly difficult when the catalysts possess a low electrical conductivity. Our study shows that a careful design of epitaxial oxide heterostructures, including this insertion of monolayer-defined diploe layers, is required to reveal intrinsic electrocatalytic properties, highlighting some of the formerly discarded candidates as surprisingly good OER catalyst.
Lisa Heymann*, Iris C. G. van den Bosch, Daan H. Wielens, Ole Kurbjeweit, Emma van der Minne, Ellen M. Kiens, Anton Kaus, Daniel Schön, Stephan Menzel, Bernard Boukamp, Felix Gunkel*Christoph Baeumer*
ACS Applied Materials & Interfaces 17, 14, 21110–21121 (2025) Published March 31, 2025
https://doi.org/10.1021/acsami.4c20141
Contact
Dr. Felix Gunkel
Senior Researcher / Group leader Associate Professor, University of Twente (IMS)
- Peter Grünberg Institute (PGI)
- Electronic Materials (PGI-7)
Room 51