Surface cations doubling air electrode catalysis in reversible solid oxide cell hydrogen energy conversion/ high-temperature electrolysis

https://www.eurekalert.org/news-releases/1139969

"air electrodes' slow oxygen ion exchange rate overcome replacing gadolinia-doped ceria auxiliary conductors with proton conductor balancing ionic/ electronic conductivity, based on machine-learning interatomic potential simulations of nearly 3K interface structures... strong built-in interfacial potential accelerates oxygen vacancy formation/ ion migration... peak power density 7.08 W/cm² (fuel cell), 7.88 A/cm² (water electrolysis), representing 2.6X and 4.4X improvements respectively... scalable"