InnoSense LLC is developing a direct air capture (DAC) system for carbon dioxide (CO2) separation from ambient air using a hybrid polymer membrane to reduce CO2 separation costs and energy penalties. Highly CO2-selective, ultra-thin, functionalized hybrid polymer membranes (HypoMem), integrated with carbon materials such as graphene oxide (GO), are being designed to improve CO2 capture performance from ambient or near-ambient conditions, thermal and chemical stability, and ease of processability for scale-up.