Worm-like Pt nanoparticles anchored on graphene with S, N co-doping and Fe3O4 functionalization for boosting the electrooxidation of methanol

Bimetallic Pt–M (M = Fe, Co, Ni) nanobunches composed of ultrathin nanowires with strong synergy and rich surface defects for enhanced methanol oxidation electrocatalysis

“…4a, c, and e). 16,20 The Co 2p spectrum displays two main peaks at 780.99–781.82 and 796.91–797.14 eV, respectively for Co 2p 3/2 and Co 2p 1/2 of bivalent Co accompanied by the two satellite peaks at 785.46–785.68 and 802.13–802.62 eV (Fig. 4b).…”

“…12 Therefore, it is urgent to explore high efficiency and low-cost catalysts for the MOR. To maximize the utilization efficiency of Pt atoms, researchers have developed a series of strategies, such as controlling the morphology and size, [13][14][15] engineering surface defects, 16,17 regulating the facets, 18,19 fabricating supported nanocomposites, 20,21 and forming alloys with other noble or transition metals. 22,23 Thereinto, alloying Pt with feasible non-precious metals (M), such as Fe, Co, and Ni, can reduce the usage of expensive Pt while effectively enhancing the electrocatalytic performance.…”

Engineering Flower-like Ni3S2 on Nanoporous CuAg Alloy Heterostructure for Efficient Methanol Oxidation Reaction

“…The rapid depletion of conventional fossil fuels, along with rising environmental pollution, has spurred an urgent demand for novel environment-friendly and efficient energy conversion devices. − Among various energy carriers to replace fossil fuels, methanol shows great potential because of its affordability, high energy density, and low carbon emission. − In particular, direct methanol fuel cells (DMFCs) have been recognized as prospective energy conversion devices, because of their high energy conversion efficiency, easy storability and transportability, environmental friendliness, and mild operating temperatures. − To date, the reactions on anode electrodes in DMFCs have been yet heavily dependent on Pt-based precious metal electrocatalysts . Despite the excellent activity of Pt-based catalysts, the scaled-up application of DMFCs has been largely hindered by their high price and extreme scarcity. , Moreover, it is worth noting that Pt-based catalysts are prone to be poisoned by intermediate products, leading to a significant deterioration in both electrocatalytic activity and stability.…”

“…11−13 To date, the reactions on anode electrodes in DMFCs have been yet heavily dependent on Pt-based precious metal electrocatalysts. 14 Despite the excellent activity of Pt-based catalysts, the scaled-up application of DMFCs has been largely hindered by their high price and extreme scarcity. 15,16 Moreover, it is worth noting that Pt-based catalysts are prone to be poisoned by intermediate products, leading to a significant deterioration in both electrocatalytic activity and stability.…”