Recent Development of Active Nanoparticle Catalysts for Fuel Cell Reactions

Mazumder, Vismadeb; Lee, Young-Min; Sun, Shouheng

doi:10.1002/adfm.200902293

Cited by 265 publications

(186 citation statements)

References 76 publications

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“…Seven review papers were published after 2009. Two review papers published in 2010 partly concerned the application of Pd in fuel cells [7,8]. Morozan et al, rediewed the application of Pd in fuel cells [9].…”

Section: Introductionmentioning

confidence: 99%

Recent Development of Pd-Based Electrocatalysts for Proton Exchange Membrane Fuel Cells

2015

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This review selectively summarizes the latest developments in the Pd-based cataysts for low temperature proton exchange membrane fuel cells, especially in the application of formic acid oxidation, alcohol oxidation and oxygen reduction reaction. The advantages and shortcomings of the Pd-based catalysts for electrocatalysis are analyzed. The influence of the structure and morphology of the Pd materials on the performance of the Pd-based catalysts were described. Finally, the perspectives of future trends on Pd-based catalysts for different applications were considered.

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Section: Introductionmentioning

confidence: 99%

Recent Development of Pd-Based Electrocatalysts for Proton Exchange Membrane Fuel Cells

2015

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“…catalysts has been recognized as one of the most effective strategies. The facts show that a Pt-based catalyst has improved the catalytic performance of FA oxidation compared with pure Pt [14][15][16][17][18][19]. Among various Pt-based catalysts, bimetallic PtAu is one of the best catalysts for formic acid oxidation, which is attributed to its enhanced activity [11,20,21] and stability against dissolution by raising the Pt oxidation potential [20,[22][23][24][25][26].…”

Section: Introductionmentioning

confidence: 99%

Au as an efficient promoter for electrocatalytic oxidation of formic acid and carbon monoxide: a comparison between Pt-on-Au and PtAu alloy catalysts

et al. 2013

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The absence of unpaired d-electrons of gold leads to its lack of reactivity and paucity of catalytic activity. Synergistic activity of bimetallic PtAu has been proved, and its structure greatly influences on the electrocatalytic activity toward formic acid and carbon monoxide oxidation. Here, a comparison between Pt-modified Au (designated as Pt-on-Au) and PtAu alloy catalysts has been studied. The Pt-on-Au catalyst was prepared by electrodeposition of Pt on the pre-prepared Au, while PtAu alloy was obtained by co-electrodeposition. As a whole, both types of PtAu catalysts were found to be more active toward formic acid electrooxidation compared to pure Pt, exhibiting maximum activity on Pt-on-Au catalyst with Pt to Au atomic ratio of 1:10.22. Moreover, the Pt/Au atomic ratio directly relates to the oxidation pathway of formic acid and carbon monoxide oxidation. The results may be ascribed to much less CO ads on the surface than single Pt catalyst due to the effect of Au nanoparticles. CO stripping voltammograms present the obvious variation between Pt-on-Au and PtAu alloy catalysts. Meanwhile, the electrocatalytic activities of bimetallic PtAu are evaluated by electrochemical impedance spectroscopy and Tafel analysis.

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“…Nanocatalysts, such as platinum (Pt) nanoparticles (NPs), are a prototypical example of the nanostructure problem 2 , since their morphology and especially the detailed atomic structure of their surfaces is crucial to their catalytic activity [3][4][5][6] .…”

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confidence: 99%

Picometre-precision analysis of scanning transmission electron microscopy images of platinum nanocatalysts

et al. 2014

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Measuring picometre-scale shifts in the positions of individual atoms in materials provides new insight into the structure of surfaces, defects and interfaces that influence a broad variety of materials' behaviour. Here we demonstrate sub-picometre precision measurements of atom positions in aberration-corrected Z-contrast scanning transmission electron microscopy images based on the non-rigid registration and averaging of an image series. Non-rigid registration achieves five to seven times better precision than previous methods. Non-rigidly registered images of a silica-supported platinum nanocatalyst show pm-scale contraction of atoms at a (1 11)/( 1 11) corner towards the particle centre and expansion of a flat (1 11) facet. Sub-picometre precision and standardless atom counting with o1 atom uncertainty in the same scanning transmission electron microscopy image provide new insight into the threedimensional atomic structure of catalyst nanoparticle surfaces, which contain the active sites controlling catalytic reactions.

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Recent Development of Active Nanoparticle Catalysts for Fuel Cell Reactions

Cited by 265 publications

References 76 publications

Recent Development of Pd-Based Electrocatalysts for Proton Exchange Membrane Fuel Cells

Recent Development of Pd-Based Electrocatalysts for Proton Exchange Membrane Fuel Cells

Au as an efficient promoter for electrocatalytic oxidation of formic acid and carbon monoxide: a comparison between Pt-on-Au and PtAu alloy catalysts

Picometre-precision analysis of scanning transmission electron microscopy images of platinum nanocatalysts

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