Researchers at Linköping University in Sweden have made a breakthrough in green hydrogen production by developing a three-layered material that enhances the efficiency of splitting water into hydrogen using sunlight. Led by associate professor Jianwu Sun, the team combined cubic silicon carbide with cobalt oxide and a catalyst material to create a new composite material, Ni(OH)2/Co3O4/3C-SiC. This material has shown remarkable performance, being eight times more effective than pure cubic silicon carbide in generating hydrogen from water. By effectively capturing sunlight, this material can separate electric charges and prevent their recombination, making the water splitting process more efficient. The ultimate aim of the researchers is to achieve 10% efficiency in green hydrogen production solely from solar energy, which would be a significant advancement in renewable energy technology. Currently, most hydrogen available in the market is 'gray' hydrogen produced from natural gas, contributing to carbon emissions. In contrast, 'green' hydrogen, produced using renewable electricity, is considered a more sustainable alternative. The research team's long-term goal is to drive the photochemical reaction for green hydrogen production using only solar energy, reducing costs and environmental impact. Although the 10% efficiency target is ambitious, the team is optimistic about achieving it within the next decade. This research represents a promising step towards commercializing green hydrogen technology and promoting a more sustainable energy future.