Synthesis of Colloidal Magnesium: A Near Room Temperature Store for Hydrogen

Abstract

Surfactant-stabilized magnesium nanoparticles were successfully prepared. These nanoparticles exhibit unique dehydriding properties. They can reversibly store 7.6 mass % hydrogen, leading to a total hydrogen capacity of 1.34 mass % for the colloid. Full hydrogen desorption is obtained at 85 °C. In comparison, hydrogen barely desorbs from bulk magnesium hydride at 350 °C