Problems and Technology Development Trends of Hydrogen Production from Renewable Energy Power Electrolysis - A Review

There is a hydrogen production route without carbon emissions, that uses power from renewable sources such as wind and solar energy to generate electricity and then electrolyzes water to produce hydrogen. So it is a clean energy in the true sense, and the hydrogen produced is also called “green hydrogen”. Hydrogen production by electrolysis of water is an important way to achieve zero carbon emissions. In the long run, hydrogen production by electrolysis of water is expected to become the main hydrogen production method. Here, two methods were reviewed for hydrogen production: alkaline water electrolysis (AWE) and proton exchange membrane water electrolysis (PEMWE). Also technical characteristics and technical development status of hydrogen production by water electrolysis were analyzed. Finally, the key research and development directions of AEW and PEMWE were respectively proposed.