NiO-induced synthesis of PdNi bimetallic hollow nanocrystals with enhanced electrocatalytic activities toward ethanol and formic acid oxidation

Binary Pd−Ni Nanoalloy Particles over Carbon Support with Superior Alkaline Formate Fuel Electrooxidation Performance

“…46-1043) and are devoid of Ni/NiO peaks ( Figure 1a). that corresponded to core metallic Pd with a positive shift of 0.4 eV at 335.7 eV (Figure 1b), indicating the d-band center being downshifted, [5] which further supports the formation of alloy. [24] The d-spacing values obtained from the XRD data further showed the successful formation of Pd fcc facets in the compositions (Table S1).…”

“…[1][2][3][4][5] With alkaline-type direct liquid fuel cells being given greater attention than acid-type fuel cells, [6][7] formate is an ideal fuel alternative to ethanol and methanol. In this manuscript, we demonstrate, for the first time, a class of binary PdÀ Ni alloy nanoparticles over two different carbon supports showing exceptional enhancement of the formate oxidation reaction (FOR) performance in alkaline medium, compared to Pd/C.…”

“…[1][2][3][4][5] With alkaline-type direct liquid fuel cells being given greater attention than acid-type fuel cells, [6][7] formate is an ideal fuel alternative to ethanol and methanol. [1][2][3][4][5] With alkaline-type direct liquid fuel cells being given greater attention than acid-type fuel cells, [6][7] formate is an ideal fuel alternative to ethanol and methanol.…”

“…[12][13] As such, DFFCs currently need potential efficient and stable catalysts for widespread commer-cial applications. [17] When considering advancements in Pd-based anode catalysts for alkaline formate oxidation, transition metal alloying has been shown to increase the alcohol and formic acid/formate fuel oxidation capabilities [5,[18][19][20][21] and to the best of our knowledge, alkaline formate oxidation using Pd-transition metal alloy catalysts has seldom been studied and is largely unexplored. [14][15][16] However, there is an imminent need for performance improvements in Pd catalysts in terms of their efficiency and durability before they can be effectively utilized in alkaline DFFCs.…”

“…Palladium is the catalyst that has shown the most promising prospects for enhanced liquid-fuel oxidation kinetics in alkaline media and that could effectively replace platinum. [17] When considering advancements in Pd-based anode catalysts for alkaline formate oxidation, transition metal alloying has been shown to increase the alcohol and formic acid/formate fuel oxidation capabilities [5,[18][19][20][21] and to the best of our knowledge, alkaline formate oxidation using Pd-transition metal alloy catalysts has seldom been studied and is largely unexplored. Previous reports suggest that the formate oxidation reaction on the Pd surface proceeds through the decomposition of COO À into CO 3 2À in alkaline medium.…”