Development of Catalytic Materials for Hydrogen Production Using Thermochemical Water Splitting Cycles

Abstract

A large-scale and cost-effective production of hydrogen by thermochemical water splitting cycles using solar as well as nuclear heat sources is of great importance. The iodine-sulfur cycle consisting of the decomposition of H₂SO₄ and HI is a promising candidate. Both reactions require novel catalytic materials having not only high activities but also tolerance to corrosive environments, which severely damage most conventional materials. This short review article describes the current status of catalyst development for these reactions.