It was learned from Sinopec that China′s first factory-based scientific research project on seawater hydrogen production has been completed in Qingdao. The completion of this project not only provides an exploratory solution for coastal areas to absorb renewable green electricity to produce green hydrogen but also offers a new possible path for the resource utilization of high-salinity industrial wastewater.

The project adopts a mode that combines direct seawater hydrogen production with green electricity-based green hydrogen production. It utilizes part of the green electricity generated by the on-water photovoltaic power station of Qingdao Refining & Chemical Company and decomposes seawater into hydrogen and oxygen through electrolyzers to achieve the direct electrolysis of seawater to produce green hydrogen. The produced hydrogen is incorporated into the pipeline network system of Qingdao Refining & Chemical Company and is used for being blended into the refining production process or for hydrogen refueling of hydrogen energy vehicles. The project has overcome key technical problems such as chlorine-resistant electrode technology, high-performance plate design, and the seawater circulation system.