This SBIR project aims to develop a helium recovery system based on high-performance proton exchange membranes (PEM). The PEM will be fabricated based on Amsen's existing technology. Membrane electrode assemblies (MEA) will be fabricated using the high-performance PEM. The processing and interfacial microstructure of the MEA will be optimized to minimize electrode overpotentials. Based on the optimized MEA, breadboard cells of the helium recovery system will be built and tested with pre-mixed helium/hydrogen mixtures in laboratory environment or relevant environment. Performance of the new helium recovery system will be contrasted with a baseline system based on the commercial Nafion membranes. The technology readiness level (TRL) by the end of Phase I is expected to be 4-5.