Scientists at the University of Adelaide, in collaboration with the ARC Centre of Excellence for Carbon Science & Innovation, have unveiled two innovative electrolysis systems that generate hydrogen from urea found in urine and wastewater. These systems require 20–27% less electricity than conventional water electrolysis. One design uses a membrane-free setup with a copper-based catalyst and pure urea, while the other relies on real human urine and a platinum-on-carbon catalyst to overcome issues like chlorine corrosion.
The breakthrough not only reduces reliance on freshwater for hydrogen production but also dramatically lowers costs. Researchers estimate production costs as low as USD 1.81 per kilogram, undercutting fossil fuel–based “grey” hydrogen and aligning with global clean energy targets. Beyond energy generation, the process also doubles as a wastewater treatment method—converting harmful nitrogenous compounds into harmless nitrogen gas. Experts suggest urine-based hydrogen could serve as both a circular waste solution and a sustainable energy source for the future. More