Novel oxychloride shows high stability and oxide-ion conduction through interstitial oxygen site

https://phys.org/news/2023-04-oxychloride-high-stability-oxide-ion-interstitial.html

"high conductivities and stability at low temperatures (100°C–300°C)... stable under reduced atmospheres... Bi-containing compound, LaBi1.9Te0.1O4.05Cl, where oxide ions migrate via interstitialcy mechanism... high chemical and electrical stability 400°C in wide oxygen partial pressure region between 10−25 to 0.2 atm, as well as a high chemical stability in CO2, wet H2 in N2 natural humidity... high oxide-ion conductivity 2.0 × 10−2 S cm−1 at 702°C... high-performance low temperature SOFC"