Ruddlesden‐Popper‐Type Epitaxial Film as Oxygen Electrode for Solid‐Oxide Fuel Cells

Abstract

The unexpected SOFC hetero-epitaxial system with large lattice mismatch is demonstrated. A (110)-oriented flat epitaxial film of Nd2NiO4+δ is successfully grown on the (100) surface of yttrium-stabilized zirconia, which realizes selective exposure of the active surface for oxygen reduction. The charge-transfer process is analyzed to be the rate-limiting step with a simple impedance model. Detailed facts of importance to specialist readers are published as ”Supporting Information”. Such documents are peer-reviewed, but not copy-edited or typeset. They are made available as submitted by the authors. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.