LAUSR

The economical consideration of using an electrocatalyst in energy-related field, composed of non-precious/sustainable elements is quite noteworthy. In this work, the phosphorus (V) complex of tris-(pentafluorophenyl)corrole [ (TPFC)P V (OH) 2 ] was firstly reported as electrocatalyst in driving hydrogen evolution reaction (HER). The electrochemical studies revealed that the HER experienced a ECEC pathway (E: electron transfer step, C: chemical step) and the possible intermediate [P V ]-H species was suggested. (TPFC)P V (OH) 2 displayed excellent HER activity in dimethylformamide (DMF) with trifluoroacetic acid (TFA) as the proton source, and the turnover frequency (TOF) reached 31.75 s -1 at an overpotential of 900 mV. Interestingly, the HER electro-catalytic performance remained to be extraordinary even applying water as a proton source in acetonitrile/water (V/V = 2/3), with TOF was recorded as 18.40 mol H 2 (mol Cat) -1 h -1 at an overpotential of 900 mV.