Recent advances in hydrogen bonded organic frameworks and their derived materials for electrocatalytic water splitting

Boosting oxygen evolution with electrodes composed of metal sulfides and hydrogen bonded organic frameworks

“…The inherently insulating nature of MTC hinders efficient charge transfer during electrocatalysis, leading to lower conductivity of MTC based hydrogen bonded organic frameworks. 51 Primarily, metal sulfides are irretrievably transformed to hydroxyl oxides through surface metal hydroxide intermediates, which are essentially active substances in the OER and promote oxidation of hydroxyl groups to O 2 molecules. Excellent catalytic activity is revealed by MTC@Co 1− x Fe x S-2, which is attributed to the reaction intermediate species adsorbed on the catalyst surface under alkaline conditions such as superoxide ions (O 2− ) while Fe atoms contribute to the control by adsorbing OH − and converting O 2− to O 2 .…”