Pd and PdM (M = Fe or Co) nanostructured electrocatalysts were synthesized by the impregnation method and supported on carbon black Vulcan XC-72R for the formic acid oxidation reaction, FAOR, in acid medium. Nitrates or chlorides were used as Fe and Co precursors to study the counter ion role on the physicochemical features and electrochemical performance of the electrocatalysts. TEM analysis showed that PdM was deposited on the carbon material with a particle size around 2–3 nm. From XRD, peaks associated with the fcc palladium planes were observed along with evidence of PdM alloy formation, particularly when the nitrate salts were used as metal precursors. Furthermore, XPS analyses indicated that nitrates promote the metal oxide formation to a greater extent than chlorides, mainly for Pd. PdCo electrocatalyst obtained from nitrates exhibited the highest performance for FAOR with a steady state current density of 451 and 313 μA cm⁻² at 200 and 400 mV respectively, which is in both cases, 3 times larger than that developed for a commercial Pd/C catalyst.

通过浸渍法合成了Pd和PdM（M = Fe或Co）纳米结构的电催化剂，并将其负载在炭黑Vulcan XC-72R上，用于在酸性介质中进行甲酸氧化反应FAOR。硝酸盐或氯化物被用作Fe和Co的前驱物，以研究抗衡离子对电催化剂的理化特性和电化学性能的作用。TEM分析表明，PdM沉积在碳材料上，粒径约为2-3 nm。从XRD观察到与fcc钯平面相关的峰以及PdM合金形成的迹象，特别是当硝酸盐用作金属前体时。此外，XPS分析表明，硝酸盐比氯化物在更大程度上促进金属氧化物的形成，主要是对于Pd。分别为200和400 mV时的^-2，在两种情况下均比商用Pd / C催化剂开发的大3倍。