The volcanic relationship between the HER activity and lattice constant of RuCo alloy nanofilms

Abstract

RuCo-ANFs with different proportions can be successfully prepared by magnetron sputtering, and their lattice constants can be adjusted accurately. In the RuCo-ANF, there is an obvious electronic interaction between Ru...

Ultra-low loading Pt atomic cluster electrode with Pt–O bond as an active site with high hydrogen evolution reaction performance

“…However, there are few applications in the preparation of electrode materials at present. 61–63 The Pt loading of the (Pt AC –O–Au)-1 electrode (0.48 μg Pt cm −2 ) is much lower than the Pt loading in most reports (Table S3 (ESI†)). Through characterization analysis, it has been proved that Pt atomic clusters (Pt AC ) with a particle size of 0.8 nm can be deposited on the surface of the Au underlayer under the low power and high vacuum magnetron sputtering.…”

Fine-tuning surface oxidation states of ruthenium nanoparticles to enhance hydrogen electrode reactions

“…1 Ruthenium (Ru) based materials are now receiving particular attention owing to the appropriate metal–hydrogen strength (Ru–H ads , ∼65 kcal mol −1 and Pt–H ads , ∼62 kcal mol −1 ). 2 Thereinto, small-sized Ru nanoparticles (Ru-NPs) have universally demonstrated fascinating performance towards the HER/HOR because of the highly exposed active center. To further enhance the intrinsic activity of small-sized Ru-NPs, one prevailing but viable strategy is to tune the electronic structure through heteroatoms' dopant, ligand effect, support engineering, etc.…”

In situ-engineered coral-like multiphase NC@NiCoCu–N/NCF nanoarrays for enhanced hydrogen evolution reaction

“…Unfortunately, precious metals have the disadvantages of high price, high hydrogen production cost and poor stability in alkaline electrolyte, 7,8 which have urged researchers to explore a new type of electrocatalyst with low price, excellent performance and good stability. 9 According to the volcanic diagram of the hydrogen evolution reaction reported by S. Trasatti, except for some precious metals, such as Pt, Pd and Ir, which have Gibbs free energies (Δ G H* ) of hydrogen adsorption closer to zero, 10,11 non-precious metals, such as nickel, cobalt and copper, have relatively better metal–H bond binding energies, 12–14 and thus they stand out among most transition metals and are favored by researchers owing to their high content in the earth's crust, excellent electronic structure, good thermal conductivity, and high electrical conductivity characteristics. In addition, nickel, cobalt, and copper can complement each other, and combining them can improve the comprehensive performance of the catalyst, which has been widely studied.…”