High-Performance Protonic Ceramic Fuel Cell with Ytterbium-Doped Barium Zirconate: Reducing Cathode Polarization by Improving Electrolyte Surface Condition.

ABSTRACT: Protonic ceramic fuel cells (PCFCs) have great potential to realize ultrahigh energy-conversion efficiency, but higher power density is required for future commercialization. The present work reports the effect of the electrolyte surface condition related to chemical composition such as stoichiometry and element distribution on cathode performance as a key for high-performance PCFCs. In our PCFCs, Ce-free Yb-doped BaZrO₃ (BZYb20) electrolytes are prepared using two BZYb20 raw powder materials with different A/B ratios, i.e., Ba_0.97Zr_0.8Yb_0.2O_3-δ (Cell-97) and Ba_0.99Zr_0.8Yb_0.2O_3-δ (Cell-99). These PCFCs exhibit different element distributions on their BZYb20 electrolyte surfaces, namely, a het

SUBMITTER: Shimada H 

PROVIDER: S-EPMC12278254 | biostudies-literature | 2025 Jul

REPOSITORIES: biostudies-literature