The use of copper and cobalt phthalocyanines as electrocatalysts for the oxygen reduction reaction in acid medium - Reis, Rafael M; Valim, Ricardo Bertholo; Rocha, Robson Silva; Lima, Alex Silva; Castro, Pollyana Souza; Bertotti, Mauro; Lanza, Marcos Roberto de Vasconcelos (Electrochimica Acta, 2014)