Synthesis of amorphous trimetallic PdCuNiP nanoparticles for enhanced OER

Abstract

Metal phosphides with multi-element components and amorphous structure represent a novel kind of electrocatalysts for promising activity and durability towards the oxygen evolution reaction (OER). In this work, a two-step strategy, including alloying and phosphating processes, is reported to synthesize trimetallic amorphous PdCuNiP phosphide nanoparticles for efficient OER under alkaline conditions. The synergistic effect between Pd, Cu, Ni, and P elements, as well as the amorphous structure of the obtained PdCuNiP phosphide nanoparticles, would boost the intrinsic catalytic activity of Pd nanoparticles towards a wide range of reactions. These obtained trimetallic amorphous PdCuNiP phosphide nanoparticles exhibit long-term stability, nearly a 20-fold increase in mass activity toward OER compared with the initial Pd nanoparticles, and 223 mV lower in overpotential at 10 mA cm−2. This work not only provides a reliable synthetic strategy for multi-metallic phosphide nanoparticles, but also expands the potential applications of this promising class of multi-metallic amorphous phosphides.

Research progress of amorphous catalysts in the field of electrocatalysis

“…The gained amorphous FeCo-PO x exhibits a low overpotential of 270 mV at 10 mA cm -2 and almost no degradation operating for 10 h, suggesting its excellent OER activity and stability [Figure 19G]. The recent reports of amorphous electrocatalyst properties in OER are concluded in Figure 19H [162][163][164][165][166][167][168][169] .…”

Doping Ru on FeNi LDH/FeII/III–MOF heterogeneous core–shell structure for efficient oxygen evolution

“…S10, S11 and Table S2 †). 18,28,31,44,[54][55][56][57][58][59][60][61][62][63] Stability tests under high current density were also performed on Ru@FeNi LDH/MOF supported on carbon paper. As shown in Fig.…”

Design Principles of Single‐Atom Catalysts for Oxygen Evolution Reaction: From Targeted Structures to Active Sites

“…Over the past few decades, researchers in this field have developed a variety of catalysts for OER, including carbonbased materials, [8][9][10][11] metal hydroxides, [12][13][14][15] phosphides, [16][17][18][19] sulfides, [20][21][22][23] and metal oxides. [24][25][26][27] At the moment, precious metal iridium-based oxides [28][29][30][31][32] and ruthenium-based oxides [33][34][35][36] are the best-performing commercial catalysts for OER, however, the limited storage and high price dictate the scope of use.…”