China Launches Nation’s First Factory-Based Seawater Hydrogen Production Research Project

China has reached a major milestone in clean energy innovation with the completion of its first factory-based seawater hydrogen production research project in Qingdao, Shandong province. Operated by China Petroleum and Chemical Corporation (Sinopec), this cutting-edge facility is a transformative step in the country’s journey toward sustainable resource utilization and renewable energy integration.

Revolutionizing Hydrogen Production with Seawater Electrolysis

The project leverages a unique combination of seawater electrolysis and green electricity from a floating photovoltaic (PV) power station. It produces 20 cubic meters of green hydrogen per hour while simultaneously addressing high-salinity industrial wastewater recycling. This innovation offers a scalable solution for renewable energy utilization in coastal areas and reduces dependence on freshwater resources.

The produced hydrogen is seamlessly integrated into Sinopec's pipeline network for refinery operations and hydrogen-powered vehicles. By completing the entire production process within the factory, the project exemplifies operational efficiency and environmental sustainability.

China’s Leadership in Green Hydrogen Development

China is solidifying its position as a global leader in green hydrogen production and utilization. Experts predict that green hydrogen will constitute 90% of the country’s hydrogen supply by 2060, up from the current 0.2%. The Qingdao project is a significant step toward achieving this goal by transforming seawater into a valuable energy resource using renewable electricity, such as solar and wind power.

“Direct seawater electrolysis has the potential to reduce reliance on freshwater while converting intermittent renewable energy into storable hydrogen. This innovation could redefine the hydrogen energy industry,” said Lin Boqiang, head of the China Institute for Studies in Energy Policy at Xiamen University.

Overcoming Challenges in Seawater Electrolysis

While the promise of seawater electrolysis is immense, it is not without challenges. Seawater contains more than 90 chemical elements and impurities such as salt and chloride ions, which can corrode electrolyzer electrodes and reduce efficiency.

Sinopec addressed these technical bottlenecks by developing proprietary technologies, including chlorine-resistant electrode systems and advanced electrode plate designs. The company’s innovative approach ensures high-performance operation while overcoming issues related to corrosion and toxicity.

Scaling Up for a Sustainable Future

With abundant wind, solar, and seawater resources, China’s coastal regions provide a natural advantage for scaling green hydrogen production. As the technology matures and costs decline, seawater hydrogen production is poised for large-scale industrial application, further enhancing China’s role as a global leader in the hydrogen energy sector.

Sinopec has made significant strides in advancing hydrogen technologies across the value chain, establishing itself as a pioneer in green hydrogen innovation.