Electrochemical Water Splitting

Electrochemical water splitting that uses the electricity generated from the intermittent waste heat, wind, and solar energies is a facile approach to efficiently produce pure hydrogen and oxygen. This chapter expands on the fundamentals, ongoing challenges, and progress, as well as the outlook for water electrolysis technology. Hydrogen production can be produced by employing the electricity output from any generator. However, it is most efficient and environmentally friendly when the processes are derived from renewable sources. The elaboration and development of electrocatalysts for water splitting in the chapter is focused on the low-temperature liquid electrolysis. From technological perspectives, water splitting can be performed in different electrolytic and temperature conditions. Both liquid and solid media can serve as the electrolyte while having different ion species that are electrochemically transferred during the process, such as OH-, H+, and O2-.