A scalable photoelectrochemical system for green hydrogen production

(a) Concept design of NiFeOOH/Ni/FAPbI3 photoanode-based water splitting cell. (b) All-PSK-based encapsulated PEC reactor made of repeated mini-modules (enlarged drawing). Credit: Nature Energy (2024). DOI: 10.1038/s41560-023-01438-x

If realized using solar energy or other renewable energy, water splitting could be a promising way of sustainably producing hydrogen (H2) on a large-scale. Most photoelectrochemical water splitting systems proposed so far, however, have been found to be either inefficient, unstable, or difficult to implement on a large-scale.

Researchers at Ulsan National Institute of Science and Technology (UNIST) recently set out to develop a scalable and efficient photoelectrochemical (PEC) system …
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