Hydrogen consuming Huc enzyme efficiently converts air into electricity

https://www.bioch.ox.ac.uk/article/scientists-discover-enzyme-that-turns-air-into-electricity-providing-a-new-clean-source-of-e

"from common soil bacterial protein mycobacterium smegmatis that can be grown in large quantities...  natural battery Huc produces sustained electrical current from air or added hydrogen... channels to Huc active site too narrow for oxygen to pass through but wide enough for hydrogen... it is predicted mutations will widen channels enabling passage of oxygen... small air-powered devices"

Related: Scientists just discovered an ‘astonishing’ way to create energy out of thin air: ‘The sky is quite literally the limit’
https://finance.yahoo.com/news/scientists-just-discovered-astonishing-way-103000591.html