Evaluation of the catalytic activity of Pd–Ag alloys on ethanol oxidation and oxygen reduction reactions in alkaline medium

Recent Development of Pd-Based Electrocatalysts for Proton Exchange Membrane Fuel Cells

“…This suggested that the Pd utilization was improved with such a surface-alloyed nanostructure. Several other alloys such as the PdPt alloy [152,[183][184][185], PdSn alloy [153,186], PdIr alloy [155,187], PdAg alloy [158,159,188], PdTi alloy [189] and PdPb alloy [160] were also studied as the catalysts for the EOR.…”

“…In alkaline medium the electrode reaction kinetics is higher than that in the acidic medium, enabling the use of Pt-free catalysts. Oliveira et al [159] evaluated PdAg alloys toward the ORR in alkaline medium and found that alloying Pd with Ag leaded to an increase in the ORR kinetics relative to Pd.…”

Preparation of PdAg and PdAu nanoparticle-loaded carbon black catalysts and their electrocatalytic activity for the glycerol oxidation reaction in alkaline medium

“…The diffraction peaks for PdAg(3:1)/CB, PdAg(1:1)/CB, PdAu(3:1)/CB, and PdAu(1:1)/CB were shifted to lower diffraction angles than Pd/CB, and the peaks were located between the peaks for pure Pd and Ag or Au, suggesting that Pd formed alloys with Ag or Au. Table 1 shows that PdAg(3:1)/CB, PdAg(1:1)/CB, PdAu(3:1)/CB, and PdAu(1:1)/CB had larger lattice constants than Pd because Ag and Au have a longer atomic radius than Pd [12]. In addition, the higher the Ag content in PdAg/CB or Au content in PdAu/CB, the larger the lattice constant.…”

Preparation and Electrocatalytic Characteristics of PdW/C Catalyst for Ethanol Oxidation

“…The interest in Pd metals is not only for lowering the cost of catalysts, but also for improving the catalytic activities [8]. One method to promote the catalytic activity of Pd is alloyed with other metals, including Ag [9,10], Fe [11] and Sn [12,13]. Many binary or ternary composite catalysts involved in Pd have been developed to enhance the electroactivity of the Pd catalyst for ethanol oxidation [14,15], such as Pd-Ru [16], Pd-Ni-P [17], Pd-Co [18], Pd-Pt [19,20], Pd-Au [21], and so on.…”