Abstract: Non-Pt electrocatalysts, Pd₃Fe₁/C, were doped with inorganic nonmetallic element phosphorus through electroless plating technique, and their electrocatalytic performance was studied. Electroless plating is an effective way to obtain P-doped Pd₃Fe₁/C with small particle size and high dispersion. The introduction of the P element leads to the decreased Pd-Fe particle size of the catalysts and an increased electrocatalytic activity for oxygen reduction. Moreover, the P dopant can improve the stability of Pd₃Fe₁/C to some extent. In the case of Fe/P molar ratio = 1/10, the Pd₃Fe₁P₁₀/C catalyst exhibits the best performance.

Key words: oxygen reduction reaction, palladium, iron, carbon supported catalyst, phosphorus doping, electrocatalytic activity