This paper discusses the concept of the sustainable energy ecosystem and introduces the main progress of our solid oxide electrolysis cell research. The latest progress of Power to X (P2X) technology realizes the sustainability of the multi-energy network by introducing the carbon-based cycling procedure. Among the P2X technologies, Solid oxide electrolysis cell (SOEC) is used to co-electrolyze CO2-H2O to produce synthetic gas, which is then synthesized into hydrocarbons through a fetor reactor. These two steps can effectively utilize the CO2 in the atmosphere and realize the carbon-neutral cycle. We focus on the made of Ce0.92Ni0.08O2/YSZ/LSM thin-film batteries at 600℃ for producing syngas. The experiment result shows that the observed current density reaches 0.1 mA/cm2 with a Faraday efficiency of over 95% and a hydrocarbon yield around 4 ml/min/cm2.
Keywords sustainable energy ecosystem, Power to X, electrochemistry, SOEC