Researchers from the Australian Research Council Centre of Excellence for Carbon Science and Innovation and the University of Adelaide have developed two novel systems that utilize urea from urine and wastewater to generate green hydrogen. These systems offer an energy-efficient and cost-effective alternative to traditional electrolysis, which is typically used to generate hydrogen from water. Unlike traditional methods, the urea-based systems produce harmless nitrogen gas instead of toxic by-products, making the overall process more efficient. The research, published in prestigious journals, details how the new systems can produce green hydrogen at a cost comparable to or cheaper than the production of grey hydrogen. By using urine as a source of urea, the researchers have addressed the issue of undesirable nitrogenous by-products and have managed to significantly reduce the amount of electricity required for hydrogen generation. One of the key advantages of these systems is the utilization of urine as a sustainable source of urea, which presents a more environmentally friendly solution compared to pure urea production through energy-intensive processes. The team is now focusing on developing non-precious metal catalysts to further reduce the cost of hydrogen production and aid in wastewater remediation. Overall, this research marks a significant advancement in the field of hydrogen production, offering a more sustainable and economically viable pathway to generating green energy.