Pt–Ru electrocatalysts for fuel cells: a representative review

Петрий, О. А.

doi:10.1007/s10008-007-0500-4

Cited by 267 publications

(181 citation statements)

References 432 publications

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“…Since the supported Pt catalyst was introduced as an electrocatalyst for the fuel cell MEA in the 1960s [12], higher activity and longer durability of Pt catalysts have been pursued to decrease the amount of Pt in the MEA and to increase the lifetime of MEA by several approaches [13][14][15][16][17][18]. These include optimizing the preparation method; alloying with other metals such as Co, Ni, or Ru; and controlling the structure of the nanoparticles, such as the core-shell structure, the Pt monolayer or the hollow formations or controlling the dealloying of transition metals from the alloy nanoparticles.…”

Section: Catalystmentioning

confidence: 99%

Design and Synthesis of Cross-Linked Copolymer Membranes Based on Poly(benzoxazine) and Polybenzimidazole and Their Application to an Electrolyte Membrane for a High-Temperature PEM Fuel Cell

et al. 2013

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Elevated-temperature (100~200 °C) polymer electrolyte membrane (PEM) fuel cells have many features, such as their high efficiency and simple system design, that make them ideal for residential micro-combined heat and power systems and as a power source for fuel cell electric vehicles. A proton-conducting solid-electrolyte membrane having high conductivity and durability at elevated temperatures is essential, and phosphoric-acid-containing polymeric material synthesized from cross-linked polybenzoxazine has demonstrated feasible characteristics. This paper reviews the design rules, synthesis schemes, and characteristics of this unique polymeric material. Additionally, a membrane electrode assembly (MEA) utilizing this polymer membrane is evaluated in terms of its power density and lifecycle by an in situ accelerated lifetime test. This paper also covers an in-depth discussion ranging from the polymer material design to the cell performance in consideration of commercialization requirements. OPEN ACCESSPolymers 2013, 5 78

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Section: Catalystmentioning

confidence: 99%

Design and Synthesis of Cross-Linked Copolymer Membranes Based on Poly(benzoxazine) and Polybenzimidazole and Their Application to an Electrolyte Membrane for a High-Temperature PEM Fuel Cell

et al. 2013

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“…[1][2][3] Specifically, bimetallic Pt-Ru nanoclusters and nanoparticles are of interest due to their high activity for the oxidation of methanol and other small organic molecules, e.g., in polymer electrolyte fuel cells. 4,5 However, in these real catalysts, it is hard to assess the origin of the catalytic activity, thus prompting analysis of model catalyst systems of the type considered here. Our focus is on the formation of bimetallic NCs by deposition on well-characterized surfaces at lower temperatures (T).…”

Section: Introductionmentioning

confidence: 99%

Atomistic modeling of the directed-assembly of bimetallic Pt-Ru nanoclusters on Ru(0001)-supported monolayer graphene

Han

Engstfeld

Behm

et al. 2013

The Journal of Chemical Physics

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The formation of Pt-Ru nanoclusters (NCs) by sequential deposition of Pt and Ru on a periodically rumpled graphene sheet supported on Ru(0001) is analyzed by atomistic-level modeling and kinetic Monte Carlo simulations. The "coarse-scale" periodic variation of the adsorption energy of metal adatoms across the graphene sheet directs the assembly of NCs to a periodic array of thermodynamically preferred locations. The modeling describes not only just the NC densities and size distributions, but also the composition distribution for mixed NCs. A strong dependence of these quantities on the deposition order is primarily related to different effective mobilities of Pt and Ru on the supported graphene. Disciplines Biological and Chemical Physics CommentsThe following article appeared in Journal of Chemical Physics 138,13 (2013) The formation of Pt-Ru nanoclusters (NCs) by sequential deposition of Pt and Ru on a periodically rumpled graphene sheet supported on Ru(0001) is analyzed by atomistic-level modeling and kinetic Monte Carlo simulations. The "coarse-scale" periodic variation of the adsorption energy of metal adatoms across the graphene sheet directs the assembly of NCs to a periodic array of thermodynamically preferred locations. The modeling describes not only just the NC densities and size distributions, but also the composition distribution for mixed NCs. A strong dependence of these quantities on the deposition order is primarily related to different effective mobilities of Pt and Ru on the supported graphene.

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“…In the forward scan, the observed decrease in the oxidation current peak, I P (i.e. self inhibition of alcohol oxidation) can be ascribed to the surface poisoning induced by irreversible strong adsorption of some CO-like species [1,32,40]. The latter gets deposited on the active site of Pd and thereby inhibits the adsorption of alcohol molecule and hence the rate of its oxidation.…”

Section: Cyclic Voltammetry (Cv)mentioning

confidence: 99%

“…Similar study seems to have not been reported in literature. However, the influence of Ru addition on the electrocatalytic properties of Pt towards alcohol oxidation in acid solutions has been studied [3,[32][33][34] considerably. This paper describes the results of the present investigation.…”

Section: Introductionmentioning

confidence: 99%

Preparation of Nanostructured Pd-C-Ru Composite Electrodes for Alcohol Electrooxidations. Part-I: A Study of Ethanol Oxidation by Cyclic Voltammetry and Impedance Spectroscopy

Anindita¹

2011

TOCATJ

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Ternary nanocomposite films of Pd, Ru and nanocarbon (C) are obtained on glassy carbon (GC) and studied by XRD, TEM, cyclic voltammetry (CV), impedance and chronoamperometric techniques for their use as electrocatalysts for ethanol oxidation reaction (EOR). Results show that introduction of Ru to the Pd-0.5wt%C composite electrode increases the electrocatalytic activity greatly. It is observed that with Ru addition from 1 to 50 wt%, the rate for EOR initially increases, attains a maximum (at 20wt %) and declines thereafter. Further, among the electrocatalysts investigated, the Pd-0.5wt%C-20wt% Ru electrode has displayed the greatest electrocatalytic activity. This electrode has nearly two times higher activity than the base electrode (Pd-0.5wt%C).

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Pt–Ru electrocatalysts for fuel cells: a representative review

Cited by 267 publications

References 432 publications

Design and Synthesis of Cross-Linked Copolymer Membranes Based on Poly(benzoxazine) and Polybenzimidazole and Their Application to an Electrolyte Membrane for a High-Temperature PEM Fuel Cell

Design and Synthesis of Cross-Linked Copolymer Membranes Based on Poly(benzoxazine) and Polybenzimidazole and Their Application to an Electrolyte Membrane for a High-Temperature PEM Fuel Cell

Atomistic modeling of the directed-assembly of bimetallic Pt-Ru nanoclusters on Ru(0001)-supported monolayer graphene

Preparation of Nanostructured Pd-C-Ru Composite Electrodes for Alcohol Electrooxidations. Part-I: A Study of Ethanol Oxidation by Cyclic Voltammetry and Impedance Spectroscopy

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