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Proceedings 2019, 9(1), 33;

Electrochemical Reduction of Oxygen Using a Metal–Organic Complex of Cu2+

Instituto de Química Aplicada del Litoral (IQAL, CONICET-Universidad Nacional del Litoral), Santiago del Estero S3000AOM Santa Fe, Argentina
Author to whom correspondence should be addressed.
Presented at the 22nd International Electronic Conference on Synthetic Organic Chemistry, 15 November– 15 December 2018; Available Online:
Published: 1 April 2019
PDF [414 KB, uploaded 1 April 2019]


A biphenyl-based copper complex was evaluated as electrocatalyst for the oxygen reduction reaction (orr), for a possible application as cathode material in fuel cells. To carry out this evaluation, the complex was supported on Vulcan carbon and deposited as a film on a glassy carbon rotating disk electrode by drop-casting a 1-μL drop of a suspension of carbon in a solution of the complex in dimethyl sulfoxide containing Nafion as ionic conductive binder, and drying under vacuum. The cyclic voltammogram in 0.1 M NaOH solution showed voltammetric peaks between 0.8 and 1.0 V vs. reference hydrogen electrode, which suggest the existence of electron transfer processes from/toward the ligand. The orr was tested in oxygen-saturated (1 atm) solution by linear sweep voltammetry, which showed significant orr current at relatively low overpotential (around −0.4 V), demonstrating the ability of the complex to electrocatalyze the orrefficiently.
Keywords: oxygen reduction reaction; electrocatalysis; metal-organic complex oxygen reduction reaction; electrocatalysis; metal-organic complex
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Ormachea, C.M.; Fernández, J.L.; Kneeteman, P.M.E.M.M.N. Electrochemical Reduction of Oxygen Using a Metal–Organic Complex of Cu2+. Proceedings 2019, 9, 33.

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