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Carbon-ion Conducting Thin Film Membranes Towards Efficient CO2 Separation


Fritz Prinz, Mechanical Engineering; Turgut Gur, Materials Science and Engineering, Stanford University


Thin-film membrane materials that selectively transport carbon ions through electrochemical means may create a method of capturing and separating CO2 in a single process step. This project will identify, design, dope, fabricate, and screen ion-conducting carbide materials and demonstrate selective transport of carbon ions through a dense nonporous membrane. When a direct current bias is applied across the carbide-membrane material, it provides extremely steep gradients of virtual pressure. This gradient combined with an ultra-thin membrane can yield high fluxes practical for CO2 capture and separation at a large scale, such as in flue gas streams of coal-fired power plants.

Progress Report