HKUST develops self-sustaining seawater-to-hydrogen system

October 8, 2026 |

In Hong Kong, a research team from The Hong Kong University of Science and Technology (HKUST), in collaboration with Arizona State University (ASU) and The Hong Kong Polytechnic University (PolyU), has developed a sustainable integrated seawater-to-hydrogen system that can produce hydrogen directly from seawater while converting waste heat from electrolysis into a resource for producing the purified water required for hydrogen production.

By integrating hydrogen production, water generation, and thermal management into a single system, the technology could help reduce the reliance of green hydrogen production on freshwater resources and offer a new approach for sustainable hydrogen development in water-scarce regions.

The research team believes this innovation demonstrates the potential of integrating seawater purification, hydrogen production, and thermal management into a single platform. Future work will focus on expanding the system’s application scope and further evaluating its performance under practical operating conditions to assess its potential for large-scale hydrogen production. Based on the reported results, the technology remains at the laboratory validation stage, and further scale-up and long-term durability studies will be needed before commercial deployment, HKUST said.

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Category: Hydrogen

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