Hydrogen production for future development of electric & hybrid vehicles in Vietnam

Abstract

This study presents effective approaches for producing hydrogen using the electrolysis method, with the aim of future development for electric and hybrid vehicles in Vietnam. Three approaches were tested: (i) using aqueous methanol, (ii) implementing a porous flow field, and (iii) increasing the electrolyzer cell temperature. These approaches were evaluated for their impact on hydrogen production efficiency. The results showed that at a current density of 0,2A/cm², the consumed electric energies were 19,8, 17,8, and 15,4 kWh to generate 1kg of hydrogen gas, with energy conversion efficiencies of 71,8%, 74,7%, and 78,6% respectively for cell temperatures of 298K, 323K, and 348K when using the porous flow field. These findings demonstrated that the approaches utilized in this study effectively improve hydrogen production efficiency.