Improving and degrading the oxygen exchange kinetics of La_0.6Sr_0.4CoO_3-δ by Sr decoration.

ABSTRACT: Minimizing the overpotential at the air electrode of solid oxide fuel cells (SOFC) is one of the key challenges regarding a broad applicability of this technology. Next to novel materials and geometry optimization, surface modification is a promising and flexible method to alter the oxygen exchange kinetics at SOFC cathode surfaces. Despite extensive research, the mechanism behind the effect of surface decorations is still under debate. Moreover, for Sr decoration, previous studies yielded conflicting results, reporting either a beneficial or a detrimental impact on the oxygen exchange kinetics. In this contribution, in situ impedance spectroscopy during pulsed laser deposition was used to investigate the effect of Sr containing decorations under different deposition conditions. Dep

SUBMITTER: Siebenhofer M 

PROVIDER: S-EPMC10281333 | biostudies-literature | 2023 Jun

REPOSITORIES: biostudies-literature