Researchers at Linköping University crafted a novel three-layer composite material integrating Ni(OH)2, Co3O4, and cubic silicon carbide (3C-SiC) that enhances photocatalytic water splitting efficiency by eightfold. This breakthrough offers a sustainable method for green hydrogen production using sunlight, addressing limitations of electric batteries in heavy-duty transport sectors. By mitigating electron-hole recombination through strategic layering, the composite enables rapid, efficient dissociation of water molecules into hydrogen and oxygen, heralding progress toward scalable clean fuel alternatives amid climate change imperatives.