Europium-Doped Ceria Nanowires as Anode for Solid Oxide Fuel Cells.

ABSTRACT: CeO₂-based materials have been studied intensively as anodes for intermediate temperature solid oxide fuel cells (IT-SOFCs). In this work, pristine and europium (Eu)-doped CeO₂ nanowires were comprehensively investigated as anode materials for IT-SOFCs, by a combination of theoretical predictions and experimental characterizations. The results demonstrate: (1) Oxygen vacancies can be energetically favorably introduced into the CeO₂ lattice by Eu doping; (2) The lattice parameter of the ceria increases linearly with the Eu content when it varies from 0 to 35 mol.%, simultaneously resulting in a significant increase in oxygen vacancies. The concentration of oxygen vacancies reaches its maximum at a ca. 10 mol.% Eu doping level and decreases ther

SUBMITTER: Li S 

PROVIDER: S-EPMC7261932 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature