Cobalt-Ruthenium based porphyrin complex/graphene oxide composite modified electrode for electrocatalytic reduction of oxygen - Saravia, Lucas Patrício Hernández; Anandhakumar, Sukeri; Goncalves, J Moura; Aguirre, J; Araki, Koiti; Toma, Henrique Eisi; Bertotti, Mauro (Annual Meeting of the International Society of Electrochemistry (ISE), 2016)