The roughly 3 percent salt content in seawater and chloride ions among impurities can corrode electrolyzer electrodes, reducing efficiency or even damaging the devices, said Sinopec.

　　The company tackled these issues by developing specialized key equipment and unique process technologies. It has overcome challenges such as chlorine-resistant electrode technology, high-performance electrode plate design, and seawater circulation systems, achieving a seamless integration of research and practical application.

　　As technology matures and costs decline, seawater hydrogen production is expected to achieve large-scale industrial application in the future. China is currently accelerating research into seawater hydrogen production, with domestic universities and research institutions actively working to overcome technical challenges in the field.

　　Sinopec has been accelerating its efforts in recent years to become China's leading hydrogen energy company by advancing research and application across the entire hydrogen value chain and building platforms for key technologies.

　　zhengxin@chinadaily.com.cn