Abstract

Clean energy delivery is a global goal to avert the climate change impacts arising from greenhouse gas emissions. Oxygen transport membranes (OTMs) with mixed ionic-electronic conductivity (MIEC) are attractive as environment-friendly, economical, and efficient means of producing oxygen from air. Especially, CO₂ resistance is an enabling property for the wide-scale implementation of oxygenselective mixed ionic-electronic conducting membranes in clean energy technologies, i.e., oxy-fuel combustion, clean coal energy delivery, and catalytic membrane reactors for greener chemical synthesis. Therefore, the significant rise in the number of studies over the past decade and the major progress in CO₂-resistant MIEC materials warrant systematic guidelines on this topic.