Metal Organic Frameworks: A Platform for Electrocatalytic Fuel Generation
In this work we demonstrate that MOFs could be beneficial when utilized in an electrocatalytic system. An electrode-supported MOF scaffold was used as a platform for NiS electrodeposition to create a hybrid HER electrocatalyst. In aqueous pH 1 solution, the MOF-NiS hybrid exhibit significantly improved catalytic performance compared to a flat NiS-only based system, reducing the required overpotential at current density of 10 mA/cm2 by more than 200 mV down to 238 mV. It was found that the aquo- and hydroxo-rich nodes of the MOF appear to modify the immediate environment of the NiS electrocatalyst, rendering it more favorable for local proton delivery and/or transport.