2008). It can also be produced from thermo-chemical processing of primary energy sources such as coal, natural gas and oil; from renewable energy sources such as methanol or biomass and by electrolysis of water. Out of these methods, water electrolysis process is robust, environmentally benign and has high efficiency (Millet et al 2009; Schulze et al 2002) as water is a clean and cost effective source of hydrogen. Splitting of water to produce hydrogen and oxygen for commercial usage dated back to the 1890.
2008). It can also be produced from thermo-chemical processing of primary energy sources such as coal, natural gas and oil; from renewable energy sources such as methanol or biomass and by electrolysis of water. Out of these methods, water electrolysis process is robust, environmentally benign and has high efficiency (Millet et al 2009; Schulze et al 2002) as water is a clean and cost effective source of hydrogen. Splitting of water to produce hydrogen and oxygen for commercial usage dated back to the 1890.