Ceramic materials and components play a key role in the production, transport, and application of green hydrogen. For large scale green hydrogen production electrolysis has to be used. We present new results for ceramic based steam electrolysis systems: SOE (solid oxide electrolysis). SOE offers two essential unique advantages:1) 30 % higher efficiency for power to green hydrogen conversion compared to competing technologies (e.g. alkaline and PEM electrolysis) with the use of waste heat.
2) Co-electrolysis capability, i.e. both water steam and CO2 can be simultaneously reduced to form syngas (H2 + CO). With this, CO2 can be actively removed from the environment. The produced syngas can be used for PtX products like e-fuel, higher alcohols, waxes, etc. For this, we present a fully integrated co-electrolysis Fischer Tropsch System.   Moreover, the combination of SOE with the Haber Bosch process allows for green ammonia NH3 production. As a hydrogen carrier Ammonia can contribute to the transport issue in a future hydrogen economy. We also present new ceramic gas separation membranes which allow to separate hydrogen from natural gas (NG). This enables to transport hydrogen in conventional NG pipelines