In situ FTIRS study of the electrocatalytic oxidation of carbon monoxide and methanol at platinum–ruthenium bulk alloy electrodes

Kabbabi, A.; Faure, R.; Durand, Robert; Beden, B.; Hahn, F.; Léger, Jean‐Michel; Lamy, C.

doi:10.1016/s0022-0728(97)00558-5

Cited by 417 publications

(283 citation statements)

References 18 publications

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“…As suggested early by Breiter [59] and confirmed with spectroscopic experiments [60][61][62] after the methanol dehydrogenation to formaldehyde two parallel reactions routes to form CO 2 are possible: via COOH ads or CO ads type of intermediates (reaction 2 and 3).…”

Section: Methanolmentioning

confidence: 58%

The correlation of electrochemical and fuel cell results for alcohol oxidation in acidic and alkaline media

Santasalo-Aarnio

Tuomi

Jalkanen

et al. 2013

Electrochimica Acta

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Section: Methanolmentioning

confidence: 58%

The correlation of electrochemical and fuel cell results for alcohol oxidation in acidic and alkaline media

Santasalo-Aarnio

Tuomi

Jalkanen

et al. 2013

Electrochimica Acta

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“…3, in which the mass is also based on the total PtRu mass. In the initial stage, all potentiostatic currents decreased rapidly, corresponding to the formation of intermediate species such as CO ads , CH 3 OH ads , and CHO ads during the methanol oxidation reaction [26]. Figure 3 shows that the current density of TiO 2 -PtRu/C (10 %) is higher than that of PtRu/C.…”

Section: Methodsmentioning

confidence: 98%

Nanoparticulate TiO2-promoted PtRu/C catalyst for methanol oxidation

Wang

Key

et al. 2012

Ionics

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To improve the electrocatalytic properties of PtRu/C in methanol electrooxidation, nanoparticulate TiO 2 -promoted PtRu/C catalysts were prepared by directly mixing TiO 2 nanoparticles with PtRu/C. Using cyclic voltammetry, it was found that the addition of 10 wt% TiO 2 nanoparticles can effectively improve the electrocatalytic activity and stability of the catalyst during methanol electro-oxidation. The value of the apparent activation energy (E a ) for TiO 2 -PtRu/C was lower than that for pure PtRu/C at a potential range from 0.45 to 0.60 V. A synergistic effect between PtRu and TiO 2 nanoparticles is likely to facilitate the removal of CO-like intermediates from the surface of PtRu catalyst and reduce the poisoning of the PtRu catalysts during methanol electrooxidation. Therefore, we conclude that the direct introduction of TiO 2 nanoparticles into PtRu/ C catalysts offers an improved facile method to enhance the electrocatalytic performance of PtRu/C catalyst in methanol electrooxidation. IntroductionCarbon-supported PtRu catalyst, PtRu/C, offers a state-of-the-art anode electrocatalyst for direct methanol fuel cells (DMFCs) due to its high activity toward methanol electrooxidation and tolerance to carbon monoxide poisoning [1][2][3][4][5]. Alloying Pt with Ru promotes the formation of oxygenated species at a lower temperature than Pt particles and promotes oxidation of CO to CO 2 . However, despite promising progress in the development of PtRu/C, the durability and activity of the PtRu/C anode still cannot meet the demands for practical DMFCs applications.

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“…Further these results provide revealing evidence that Ru element in the perovskite structure play a big role in the observed electro-catalytic activity. It is well known fact that during electro-oxidation of alcohols on Pt-Ru catalyst, ruthenium activates water and provides preferential sites for OH group adsorption at low potential (26,27). These OH groups are essential for complete oxidation (to CO 2 ) of the intermediate chemisorbed species.…”

Section: Electro-catalytic Activitymentioning

confidence: 99%

Perovskite-Based Catalysts for Direct Ethanol Fuel Cells

Lan

Mukasyan

2007

ECS Trans.

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AbstractsA new catalyst development strategy, featuring an energy efficient and rapid synthesis technique so-called solution combustion (SC), and an high throughput electro-catalysts screening system (NuVant), is proposed. Under this strategy, a library of conductive perovskites were synthesized and tested as anode electrodes in the Direct Ethanol Fuel Cell conditions. It was found that a variety of Ru-based perovskites showed considerable electro-catalytic activity for ethanol oxidation. Further, it was demonstrated that the composite perovskite-platinum catalysts with low noble metal loading prepared directly by SC method exhibit comparable performance with standard Pt-Ru alloy.

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In situ FTIRS study of the electrocatalytic oxidation of carbon monoxide and methanol at platinum–ruthenium bulk alloy electrodes

Cited by 417 publications

References 18 publications

The correlation of electrochemical and fuel cell results for alcohol oxidation in acidic and alkaline media

The correlation of electrochemical and fuel cell results for alcohol oxidation in acidic and alkaline media

Nanoparticulate TiO2-promoted PtRu/C catalyst for methanol oxidation

Perovskite-Based Catalysts for Direct Ethanol Fuel Cells

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