Techno-economic analysis and comprehensive optimization of an<i>on-site</i>hydrogen refuelling station system using ammonia: hybrid hydrogen purification with both high H₂purity and high recovery

A carbon-free<italic>on-site</italic>hydrogen refuelling station using ammonia and hybrid “PSA-to-membrane” separation can produce more than 99.97%-purity and more than 95%-recovery hydrogen with an 85.37% efficiency and a cost of 4.31 € per kg.