Researchers from the University of Adelaide have developed two unique systems that utilize urea from urine and wastewater to generate green hydrogen. These systems offer a cost-effective and sustainable alternative to traditional water electrolysis for hydrogen production. The urea-based systems are more energy-efficient and produce harmless nitrogen gas instead of toxic by-products. The research, published in prestigious journals, demonstrates that the cost of producing green hydrogen through urea is comparable to or cheaper than grey hydrogen production from fossil fuels. The team also found that utilizing urine as a source of urea is a more accessible and environmentally friendly approach. Challenges related to chloride ions triggering reactions in urine have been addressed through innovative technologies. The use of non-precious metal catalysts is being explored to scale up the systems for efficient green hydrogen production while treating wastewater. The University of Adelaide team's work signifies a significant step towards a more sustainable and economically viable method for generating green hydrogen.