The study of electrochemical hydrogen storage behavior of the UiO-66 framework on the metal/reduced graphene oxide substrate

Abstract

Feasible and safe storage of hydrogen as a clean and renewable energy carrier, is one of the main challenges to be tackled using highly efficient hydrogen storage materials. A new nanocomposite with a zirconium-based metal– organic framework is synthesized for the first time to improve the hydrogen storage capacity of the graphene oxide used to design graphene layers with metal. To this end, graphene oxide (GO) is combined with some metal ions (M), including Cu2+, Ni2+, Co2+and Ag+. The results of hydrogen storage capacity show that among different M/rGO, the introduction of Ag is the best choice. Eventually, the hydrogen storage capacity of 25 wt% Ag/rGO is 1600 mAhg