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A pilot-scale demonstrator producing hydrogen gas (H2) using concentrated photovoltaics is currently making the rounds in the technical press. Exciting!
- https://engineeringcommunity.nature.com/posts/harnessing-the-power-of-the-sun-to-produce-hydrogen-oxygen-and-heat
- https://hackaday.com/2023/04/27/making-hydrogen-with-solar-energy-with-oxygen-and-heat-a-bonus/
The paper from the Haussener lab was published April 10, 2023: Holmes-Gentle, I., Tembhurne, S., Suter, C. et al. Kilowatt-scale solar hydrogen production system using a concentrated integrated photoelectrochemical device. Nat Energy (2023).
Pretty neat. Also
the band gap in ordinary water is about 7 eV
Good to know!