A high performance O2 selective membrane based on CAU-1-NH2@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-NH2 into a PMMA (polymethylmethacrylate) matrix. The MMM possesses the advantages of high O2 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.