Abstract
Corrosions of Mg metal in the aqueous solution of NaCl and seawater have been utilized to evolve H2 gas by introducing Galvanic Coupled Cell with Cu as the counter electrode. The cell voltage generated during corrosion of Mg splits water and counter electrode size has been affected the current generated during corrosion and influences H2 evolution. As the size of the electrode increases, current and hence the volume of HE has been enhanced. Hydrogen gas is also evolved from artificial seawater produced by the seawater extracted salt. This arrangement has produced >1.2L H2 gas in 12 h, 350 times higher than Mg dissolved alone in NaCl solution. Following the same procedure to the acidic medium, H2 gas has also been produced successfully.
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