After thorough characterization of the synthesized electrocatalyst, the electrocatalytic properties were studied in alkaline solution (Figure ). Unless otherwise stated, the electrocatalytic activity by linear sweep voltammetry (LSV) and cyclic voltammetry (CV) was measured at a scan rate of 10 mV s -1 and 40 mV s -1 respectively, normalized by their geometric area (0.071 cm 2 ) and converted to RHE.