N, S and P-functionalized graphene. Exploring the role of heteroatoms in the enhancement of the activity for the ORR.

E. PASTOR; N. MONGE; J. C. CALDERÓN GOMEZ; L. M. GAVIDIA; G. PLANES; G. M. MORALES

Estoril

Simposio; HYCELTEC 2013 ? IV Iberian Symposium on Hydrogen, Fuel Cells and advanced Batteries; 2013

Catalysts for oxygen reduction and evolution reactions are at the heart of key renewable-energy technologies including fuel cells and water splitting. The development of the oxygen electrode catalysts with high activity, selectivity and durability tat low cost remains a great challenge despite tremendous efforts. The non-noble metal catalysts based on pyrolyzed carbon and nitrogen precursors have shown good performance toward the ORR. The recent interest in heteroatoms-doped graphene as catalysts has its origin in three properties: large surface area, very good conductivity and high mobility of charges. In addition, the graphitic structure gives to the graphene based materials high chemical and mechanical stability.The present work reports the synthesis and characterization of P, S and N-doped graphene oxides (GO) and reduced graphene oxides (RGO) with the final purpose of study its use as catalyst in the oxygen reduction reaction (ORR).