Phosphorus modification of cobalt-iron nanoparticles embedded in a nitrogen-doped carbon network for oxygen reduction reaction.

ABSTRACT: For the electrochemical reduction of oxygen the development of heteroatom-doped carbon-based transition metal catalysts has become a recognized strategy to replace traditional noble metal catalysts. In this work a catalyst consisting of CoFe nanoparticles encapsulated in N-doped carbon-based materials (NC) supported by carbon nanotubes (CNTs), i.e. Fe₃Co₁@NC/CNTs, was modified via treatment with a phosphate salt to synthesize a P-Fe₃Co₁@NC/CNTs catalyst. The P-Fe₃Co₁@NC/CNTs exhibits with 5.29 mA cm^-2 an enhanced current density which is comparable to a Pt/C catalyst. In addition, a stability and methanol resistance better than the Pt/C catalyst were observed which is ascribed to the carbon encapsula

SUBMITTER: Zhang R 

PROVIDER: S-EPMC8695452 | biostudies-literature | 2021 Mar

REPOSITORIES: biostudies-literature