Facile One-Step Synthesis of Three-Dimensional Pd–Ag Bimetallic Alloy Networks and Their Electrocatalytic Activity toward Ethanol Oxidation

Abstract

The three-dimensional palladium networks and palladium-silver bimetallic alloy networks were synthesized at room temperature on a large scale using a rapid and simple strategy. The results revealed that the morphology of the networks is not affected by the composition. We demonstrated that the as-prepared unsupported networks exhibited excellent electrochemical activity and stability toward ethanol oxidation reaction in alkaline media due to the formation of palladium-silver alloys as well as the porous nanostructures. The results indicate that the well-defined three-dimensional palladium-silver bimetallic alloy networks are promising catalysts for fuel cells.

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

“…Two components alloying of Pd with other metals have been intensively studied, while the multi-alloying still needs to be put more attention, and the muli-alloying also provides vast variations in the choice and combination of different metals. Novel nanostructure of Pd is still a popular topic in this field [136][137][138][139][140][141]. …”

Electrochemical behavior of electrodeposited Pd and PdNi coatings for the ethanol oxidation reaction in alkaline solution

“…It has been reported that modifications of the Pd nanocatalyst by metals such as Ni [6][7][8], Au [9,10], Cu [10,11], Ag [10,12], Co [10,13 ] effectively improve the catalytic performances of the Pd nanocatalyst toward alcohol oxidations in alkaline media.…”

Facile Synthesis of Carbon‐Supported Ultrasmall Ag@Pd Core‐Shell Nanocrystals with Superior Electrocatalytic Activity for Direct Formic Acid Fuel Cell Application

“…10.1%), together with up to 80.2% of the concentration of Ag(I) --species in the Ag@Pd/C-2, again indicating that electrons can transfer from Ag atoms to Pd atoms, thus leading to a strong interaction between Ag and Pd. [38] The mass specific activity (MSA) was evaluated by using the current density at the potential of 0.345 V as shown in Table 2. [32] Figure 4 compares the cyclic voltammograms (CVs) of three Ag@Pd/C nanoparticles, Pd/C, and commercial Pd black catalyst.…”