Atomic ruthenium modification of nickel-cobalt alloy for enhanced alkaline hydrogen evolution

FeCoNiW medium entropy alloys loaded onto N-doped carbon skeletons as efficient electrocatalysts for oxygen evolution reactions

“…15-0806). 30 The specific surface area and pore size of the catalysts were investigated by nitrogen physisorption measurements. Fig.…”

Dual-Modification Engineering of CoNi Alloy Realizing Robust Performance for Electrocatalytic Hydrogen Production

“…The optimal NiCoRu 0.2 /SP sample shows an overpotential of 59 mV at 10 mA cm −2 for HER. A detailed experimental result and characterizations confirm that the interface-induced electron transfer from atomic Ru to its surrounding Ni/Co does lead to significantly improved reaction kinetics [35]. However, there is still lack of simple strategy to realize the synergistic regulation of noble metal or anion modification on alloy systems.…”

“…Metal alloy with well-defined structures present a unique advantage for electrocatalysis or for other energy-related systems due to its special surface exposure metal sites, its controllable composition, and its high intrinsic conductivity [27][28][29][30][31][32]. Recently, many efforts have been made to dope trace amounts of precious metals into alloy materials, and they have achieved excellent catalytic properties [28,[33][34][35][36]. For example, a porous graphene shell architecture is modified by an ultralow (0.66 wt%) Pt doped FeNi alloy nanoparticles by a facile strategy, which shows a superior specific HER catalytic performance, including low overpotential, a small Tafel slope, and high stability in 0.5 M H 2 SO 4 [28].…”

Nanostructure engineering of ruthenium-modified electrocatalysts for efficient electrocatalytic water splitting

“…11a and b). 164 DFT calculations show that the incorporation of atomic Ru atoms into the NiCo matrix produces unique electron interactions at the Ru–Ni/Co interface, while X-ray absorption spectroscopy (XAS) demonstrates the electron transfer from the single Ru sites to the surrounding Ni/Co atoms (Fig. 11c).…”