Cobalt/nitrogen-doped reduced graphene oxide was synthesized by pyrolysis of a mixture of cobalt phthalocyanine with graphene oxide at 500 °C under inert atmosphere. The obtained material was a reduced graphene oxide which had active Co-N- centers and contained cobalt phthalocyanine residues intercalated into reduced graphene lattice. This material demonstrated electrochemical activity towards oxygen reduction in an alkaline electrolyte, even though, it remained much below that demonstrated by a standard Pt/Carbon electrocatalyst. However, when the same material was used to make a cathode electrode applicable to a photocatalytic fuel cell, it offered a very satisfactory performance so that it may be successfully employed in the construction of Pt-free devices.

钴/氮掺杂的还原氧化石墨烯是通过在惰性气氛下于500°C下热解酞菁钴与氧化石墨烯的混合物而制得的。所获得的材料是具有活性Co-N-中心并且包含嵌入到还原的石墨烯晶格中的钴酞菁残基的还原的氧化石墨烯。该材料即使在碱性电解液中也表现出对氧还原的电化学活性，尽管它仍远低于标准Pt /碳电催化剂所显示的活性。但是，当使用相同的材​​料制造可用于光催化燃料电池的阴极时，它提供了非常令人满意的性能，因此可以成功地用于无Pt器件的构造中。