Mitigating proton trapping in cubic perovskite oxides via ScO₆ octahedral networks.

ABSTRACT: Advances in electrochemical devices have been primarily driven by the discovery and development of electrolyte materials. Yet the development of high-performance and chemically stable proton-conducting oxide electrolytes remains a challenge due to proton trapping and the resulting trade-offs between ionic carrier concentration and conductivity in doped oxides. Here we demonstrate that cubic perovskite oxides with heavy Sc doping can overcome these limitations. BaSn_0.3Sc_0.7O_3-δ and BaTi_0.2Sc_0.8O_3-δ are found to exceed the technological threshold of a total proton conductivity of 0.01 S cm^-1 for fuel cell electrolytes at 300 °C. The structural stability of BaSn_0.3Sc_0.7O_3-δ is further

SUBMITTER: Tsujikawa K 

PROVIDER: S-EPMC12657236 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature