A high performance O 2 selective membrane based on CAU-1-NH 2 @polydopamine and the PMMA polymer for Li–air batteries

A novel mixed matrix membrane (MMM) was prepared by incorporating polydopamine-coated metal organic framework (MOF) crystals of CAU-1-NH 2 into a PMMA (polymethylmethacrylate) matrix. The MMM possesses the advantages of high O 2 permeability, high capability of carbon dioxide capture, and excellent hydrophobic behavior. The MMM was assembled in the Li–air batteries which displayed promising electrochemical performance in the real ambient air with 30% relative humidity.