18/04/2026
Engineers just demonstrated a hydrogen combustion engine that extracts its fuel directly from atmospheric water v***r — running continuously on humidity alone with zero carbon emissions and zero external fuel supply required.
A team from the Korea Institute of Energy Research developed an atmospheric water harvesting system using metal-organic framework sorbents that extract water v***r from air at humidities as low as 20% — capturing 4.7 liters of water per kilogram of sorbent material per day. This water feeds a solid oxide electrolyzer splitting it into hydrogen and oxygen using 2.3 kilowatts of electrical input from integrated solar panels. The hydrogen powers a modified combustion engine producing 8.7 kilowatts of continuous mechanical output — a net energy gain of 6.4 kilowatts from atmospheric humidity alone.
The system operates continuously day and night — solar panels charge a supercapacitor buffer during daylight ensuring uninterrupted hydrogen production through the night. Field testing across 60 days in semi-arid Korean conditions confirmed reliable operation at ambient humidities between 25 and 85%.
Source: Korea Institute of Energy Research, Advanced Energy Materials, 2024
