An Overview of Hydrogen Production Technologies of Water Electrolysis

This review provides an overview of some important investigations performed on the development of hydrogen production. In the near future, hydrogen will become an important source which may be able to solve local problems also connected with air quality. Hydrogen-propelled transport is being established and is utilized in the industry. Hydrogen is abundantly present all over universe and can be obtained from different resources, renewable or not. Sources of hydrogen energy are coal and biomass, oil, natural gas, algae and alcohols, water electrolysis, PV-electrolysis, windelectrolysis and geothermal energy electrolysis. In particular, hydrogen can be generated from water electrolysis using all those processes that can give the required 1.23 V potential. Electrolysis reveals itself as the cleanest method to generate hydrogen, when the required electricity is derived from renewable energy sources. This work provides also basic information,