The electrochemical experiments were evaluated using a conventional three-electrode glass cell equipped with Auto lab potentiostat (AUTOLABPGSTAT302 N, Metrohm). The electrodes were glassy carbon electrode (GCE) polished with alumina powder and modified with LSCO catalyst as a working electrode. Pt-wire was used as an auxiliary electrode and a saturated Ag/AgCl/Cl -(3.5 M KCl) as a reference electrode. The polished GCE had a surface area of 0.071 cm 2 and a diameter of 3 mm. The cyclic voltammograms (CV) and chronoamperometric (CA) traces of the catalysts were investigated in an alkaline electrolyte with and without methanol (MeOH) at different concentration under ambient conditions. For performing the hydrodynamic studies, the rotating ring disk electrode (RRDE) method was used where the electrochemical cell was equipped with a GC-Au (glassy carbon disk and Au ring) as working electrode, a Pt mesh as counter electrode, an Ag/AgCl/Cl -(3.5 M KCl) as reference electrode and 0.5 M KOH as electrolyte. The GC disk has a geometrical surface area of 0.2472 cm 2 whereas the Au ring has a geometrical surface area of 0.1859 cm 2 . The catalyst slurry was drop casted onto the GC disk electrode. Unless otherwise stated, all the RRDE measurements were done at a rotation of 1600 rpm and the currents were normalized with respect to their geometrical surface area. In all measurements, potential in Ag/AgCl is converted to RHE in 0.5 M KOH according to the following equation: ERHE = EAg/AgCl + 0.059*pH + 0.1976 V