Preparation of dense La0.5Sr0.5Fe0.8Cu0.2O3−δ-(Li,Na)2CO3-LiAlO2 composite membrane for CO2 separation

The dominant pathway for CO2 permeation in the LSFCu-(Li,Na)2CO3-LiAlO2 composite membrane was believed through the coherent interaction between O2− and CO32− ions. Increased oxygen partial pressure in the feed gas can facilitate CO2 permeation. Due to the low O2 concentration in real flue gases, potentially the LSFCu-(Li,Na)2CO3-LiAlO2 dual phase membrane will separate CO2 only which provides an alternative technology for CO2 separation.