Phase-Assisted Tailored Conductivity of Doped Ceria Electrolytes to Boost SOFC Performance.

ABSTRACT: Efforts to lower the operating temperature of solid oxide fuel cells include producing electrolytes that are sufficiently conductive and stable below 600 °C. Doped ceria is one such electrolyte being considered. During this study, codoped ceria powders (Ce_0.8Sm_0.2-xM_xO_2-δ, M = Bi³⁺, Zn²⁺ and x = 0, 0.05, 0.1, 0.15, 0.2) were prepared via coprecipitation by the addition of sodium carbonate and annealed at 800 and 1200 °C, respectively. Poor solubility of the codopants in the ceria was observed for samples annealed at 800 °C, resulting in a mixed-phase product including stable phases of the oxides of these codopants. A second-stage partial incorporation of these codopants into the ceria lattice was observe

SUBMITTER: Arshad MS 

PROVIDER: S-EPMC10450644 | biostudies-literature | 2023 Aug

REPOSITORIES: biostudies-literature