Toward Sustainable H2 Production: Linking Hydrogenase with Photosynthesis

Molecular hydrogen, H2, is an energy carrier that is increasing in popularity as an alternative fuel. Presently, the major part of commercially available H2 is produced from fossil resources. To make H2 a true contender to fossil fuels, a sustainable production via water splitting by renewable electricity in combination with earth-abundant catalysts or by photosynthetic microorganisms is required.