Electrocatalytic hydrogen evolution from neutral water by molecular cobalt tripyridine-diamine complexes

A cobalt complex with a tripyridine-diamine pentadentate ligand was found to be a highly active catalyst for electrochemical H2 production from neutral water, with an activity of 860 mol H2 (mol cat)-1 h-1 (cm2 Hg)-1 over 60-h CPE experiment at -1.25 V in a pH 7 phosphate buffer solution, without considerable deactivation