Enhanced Electrocatalytic Activity of Trace Pt in Ternary CuCoPt Alloy Nanoparticles for Hydrogen Evolution

Abstract

We report an enhanced high electrocatalytic hydrogen evolution activity of trace Pt and Co diluted in ternary CuCoPt alloy nanoparticles with Cu as the substrate. Using only 10% Pt atoms can display even better activity and stability in hydrogen evolution reactions than using pure Pt nanoparticles.

PtCo@NCs with Short Heteroatom Active Site Distance for Enhanced Catalytic Properties

“…As shown in Figure 3a, the intense peaks located at 72.01 and 75.35 eV in the high‐resolution Pt 4f spectrum of Pt/C can be assigned to metallic Pt 4f 7/2 and Pt 4f 5/2 , respectively. [ 16 ] With Pt/C as a reference, the Pt 4f peaks for PtCo@NC (A‐700 °C) had almost no shift, while increasingly negative shifts were observed by 0.14 and 0.28 eV for PtCo@NCs (A‐800 °C) and PtCo@NCs (A‐900 °C), respectively. Accordingly, the high‐resolution Co 2p spectra of PtCo@NCs (A‐800 °C and A‐900 °C) (Figure S16, Supporting Information) showed gradually positive shifts in comparison with those of PtCo@NCs (A‐700 °C), and the PtCo@NC (A‐900 °C) demonstrated a lager shift than PtCo@NCs (A‐800 °C).…”

Channel‐Rich Pt0.23Mn0.42Ni0.35 Ternary Alloy Nanocatalysts for Efficient Hydrogen Evolution

“…[22][23][24] Therefore, a series of binary and ternary platinum-based alloys with good performance have been reported in recent years. For instance, by combining some transition metals such as Fe, [25] Co, [26] Ni, [27][28][29] with platinum to form alloy nanostructures, the catalytic performance is improved. [30] In particular, PtNi alloy has attracted extensive attention in recent years due to its excellent catalytic activity.…”

A platinum nanoparticle doped self-assembled peptide bolaamphiphile hydrogel as an efficient electrocatalyst for the hydrogen evolution reaction

“…[19][20][21] In this regard, an enormous effort has been devoted in developing highly effective and advanced electrocatalyst for hydrogen production. 22,23 Although, noble metal-free electrocatalytic HER catalysts have been extensively investigated as a means to lessen the insufficiency and high cost of platinum-based catalyst. 16,[24][25][26] However, the large Tafel slope due to sluggish mechanism and overpotential with small exchange current density have hampered the widespread application of these noble metal-free catalysts toward practical hydrogen generation.…”

“… 19–21 In this regard, an enormous effort has been devoted to developing highly effective and advanced electrocatalysts for hydrogen production. 22,23 Although noble metal-free electrocatalytic HER catalysts have been extensively investigated because of the insufficiency and high cost of platinum-based catalysts, 16,24–26 the large Tafel slope due to the sluggish mechanism and overpotential with small exchange current density have hampered the widespread application of these noble metal-free catalysts toward practical hydrogen generation. 27 Therefore, platinum-based nanomaterials such as Pt nanoparticles (Pt NPs) 28 and Pt nanocubes 29 are still the most widely used catalysts for the electrocatalytic HER at their lowest overpotential and highest exchange current density.…”