Minimized thermal expansion mismatch of cobalt-based perovskite air electrodes for solid oxide cells
Zhishan Li, Meilan Peng, Yingru Zhao, Jianhui Li, Yifei Sun
Abstract
at 750 °C. The TEC mismatch between fabricated R-BCZY-Co electrodes and BCZY electrolytes is minimized down to only ∼11.4%, which is significantly lower than that of other representative counterparts. Moreover, the detailed XPS result proves that the architecture of exsolved Co on BCZY possesses a higher concentration of surface oxygen vacancy, which further benefits the kinetics of ion diffusion and oxygen absorption.
Topics & Concepts
Materials scienceCobaltElectrodeOxideElectrolytePerovskite (structure)Chemical engineeringCobalt oxideOxygenClark electrodeX-ray photoelectron spectroscopyNanotechnologyChemistryPhysical chemistryMetallurgyOrganic chemistryEngineeringAdvancements in Solid Oxide Fuel CellsElectronic and Structural Properties of OxidesAdvanced battery technologies research