Electrocatalytic oxidation of water by transition metal complexes to produce clean and renewable hydrogen fuel is a promising pathway for sustainable development. Herein we report electrocatalytic water oxidation activity of two dinuclear copper (II) complexes, 1, [Cu2(L1)2(H2O)2]2+, [L1H = methyl-2-(2-hydroxybenzylamino)-3-(1H-imidazol-4-yl)propanoate] and 2, [Cu2(L2)2(H2O)2]2+, [L2H = 2-((2-(pyridin-2-yl)ethylamino)methyl)phenol], in basic phosphate buffer of pH 12. Complexes 1 and 2 shows stable and efficient catalytic activity exhibiting turnover frequency (TOF) of 2.83 s-1 and 28.87 s-1 at about 365 mV and 345 mV over potential respectively with ~94% faradaic efficiency

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