Shape and Hydriding Effects of Palladium Nanocatalyst Toward Oxygen Electroreduction Reaction

Abstract

Oxygen reduction reaction (ORR) performances of palladium nanocubes and octahedra and their hydride forms were investigated. A volcano type relationship between ORR activity and binding strength of reaction intermediates was observed that palladium nanocubes being the most active toward the ORR in acidic media among other Pd‐based catalysts.

Edge-segregated ternary Pd–Pt–Ni spiral nanosheets as high-performance bifunctional oxygen redox electrocatalysts for rechargeable zinc–air batteries

“…By comparison, the superior OER performance of the edge-segregated Pd 45 Pt 44 Ni 11 SpNSs can be attributed to the incorporation of oxytropic Ni and the in situ generated NiO x species which create stronger auxiliary sites for the adsorption of the –OH group and then accelerate the OER process. 28–30 More importantly, the Pd 45 Pt 44 Ni 11 SpNSs/C exhibits favorable OER stability (Fig. 5d).…”

“…25–27 Rationally, the incorporation of oxophilic Ni can create stronger auxiliary adsorption sites for –OH groups to favor the reverse OER process. 28–30 However, the Ni atoms in the achieved Pt–Ni and Pd–Ni nanomaterials with considerable ORR activities are usually buried under the outmost Pt and Pd atomic layer skins and only act as an electronic structure regulator. 31–33 Therefore, it is essential to develop a more precise synthetic strategy for regulating the elemental distribution to create effective dual-electrocatalysts toward reversible oxygen redox electrocatalysis.…”

Termolecular Eley–Rideal pathway for efficient CO oxidation on phosphorene‐supported single‐atom cobalt catalyst

“…[2][3][4][5][6][7][8][9][10] In particular, significant efforts have been devoted to achieve low-temperature CO oxidation catalysis using SAC owing to its fundamental and practical importance in various environmental and industrial applications. [11][12][13][14][15][16] Noble metal-based catalysts, such as Pt, [17][18][19][20][21][22] Pd, 20,23,24 Au, [25][26][27][28][29][30][31] and Rh, 20,32 exhibit extraordinary catalytic activity for various catalytic reactions. Hence, their small (Au, 28,33 Ag, 34 Pt, 35 and Pd 36 ) and bimetallic clusters [37][38][39][40][41] have attracted interest to improve the catalytic activity, especially of CO oxidation, and reduce the extent of the noble metal resource.…”

Construction of Concave PdAg Nanoshells with Limited Thickness for Efficient Electroxidation of Ethanol

“…Ethanol oxidation reaction is one of the important classes of cathodic reaction for fuel cells that converts the chemical energy stored in liquid fuel to electricity (Mann et al, 2006;An and Zhao, 2011;Hong et al, 2019;Kim et al, 2019;Kim et al, 2020;Kabiraz et al, 2021). Compared to the commercial device directly using gaseous hydrogen as the hydrogen sources, ethanol can be of higher energy density and bio-renewability, as well as the advantage with respect to storage and transportation under ambient condition (Lamy et al, 2001;Shen et al, 2012).…”