Pd‐RuSe/C as ORR Specific Catalyst in Alkaline Solution Containing Methanol

Abstract

Carbon supported RuSe (RuSe/C) catalyst in varying atomic ratios of Ru to Se, namely, 1:1, 2:1, and 3:1 were prepared and their performances were compared with carbon supported Ru (Ru/C). Based on the performance, Palladium was incorporated into as prepared RuSe(2:1)/C and heat treated HTRuSe(2:1)/C. Ru/C, RuSe/C, and Pd‐RuSe/C were characterized by X‐ray diffraction (XRD) and transmission electron microscopy techniques. The XRD analyses of Ru/C, RuSe/C and Pd‐HTRuSe/C show the formation of the hcp structure of Ru particles and the mean particle size was obtained from Ru(101) peak. The electrochemical characterizations of Ru/C, RuSe/C, Pd‐HTRuSe(2:1)/C and Pd‐RuSe(2:1)/C were conducted by cyclic voltammetry. Linear Sweep Voltammetric studies showed that incorporation of Pd in HTRu‐Se(2:1)/C resulted in better catalytic activity toward oxygen reduction with resistance to methanol oxidation. The quantity of hydrogen peroxide produced was obtained from rotating ring disk electrode studies.

Carbon supported Ag and Ag–Co catalysts tolerant to methanol and ethanol for the oxygen reduction reaction in alkaline media

“…12), Pt and Pd present large anodic currents, which increases notably with the increment of methanol or ethanol concentrations (not shown), superimposed to the oxygen reduction one. These anodic signals are related to methanol oxidation reaction (MOR) [32,33] and ethanol oxidation reaction (EOR), processes that take place when the crossover occurs in a fuel cell producing a mixed potential at the cathode. It is known that such mixed potentials could negatively affect the cathode performance of the ADAFCs and, according to Fig.…”

Electrocatalytic Oxidation of Formaldehyde onto Carbon Paste Electrode Modified with Nickel Decorated Nanoporous Cobalt‐Nickel Phosphate Molecular Sieve for Fuel Cell

“…Recently, electrooxidation of single carbon organic substances such as CH 3 OH, HCHO, C 2 H 5 OH, and HCOOH on the surface has been studied on different modified electrodes because these compounds can be used as fuel in fuel cells, which have various advantages such as high energy density, easy portability and pollution‐free specialty and their great potential for utilization as electron donors in fuel cells and generation of high power density 1, 2. Although formaldehyde is toxic and not very suitable for fuel cells, the study of its electrochemical oxidation is important for the full understanding of methanol oxidation because formaldehyde is produced by partial oxidation of methanol 3–5.…”

ZIF‐8 derived CeO2‐Fe3O4@Fe‐N/C catalyst for oxygen reduction reaction

“…Hydrogen and fuel cell technologies have attracted extensive attention because of their high energy conversion efficiency and environmental protection [1][2][3][4][5]. At present, the main factor limiting the application of fuel cells is the kinetics of ORR reaction is rather slow on the cathode, which limits the total efficiency of fuel cells [6,7]. The fourelectron ORR is a very spontaneous reaction in H 2 /O 2 fuel cells, but its kinetics are sluggish on most electrode surfaces because it involves several electron transfer steps and consequently several activation barriers [8][9][10][11].…”