Structure and Stability of Pt-Y Alloy Particles for Oxygen Reduction Studied by Electron Microscopy

Davide Deiana; Jakob Birkedal Wagner; Thomas Willum Hansen

doi:10.1149/06602.0115ecst

Structure and Stability of Pt-Y Alloy Particles for Oxygen Reduction Studied by Electron Microscopy

Davide Deiana (Invited author), Jakob Birkedal Wagner (Invited author), Thomas Willum Hansen (Invited author)

Research output: Contribution to journal › Conference article › Research › peer-review

Abstract

Platinum-yttrium alloy nanoparticles show both a high activity and stability for the oxygen reduction reaction. The catalysts were prepared by magnetron sputter aggregation and mass filtration providing a model catalyst system with a narrow size distribution. The structure and stability of nanostructured Pt-Y alloy catalysts were studied using transmission electron microscopy techniques. Using elemental X-ray mapping and high-resolution electron microscopy, the specific compositional structure and distribution of the individual nanoparticles was unraveled and the stability assessed. Studying the catalyst after reaction and after aging tests shows the development of a core-shell type structure after being exposed to reaction conditions.

Original language	English
Journal	E C S Transactions
Volume	66
Issue number	2
Pages (from-to)	115-127
ISSN	1938-5862
DOIs	https://doi.org/10.1149/06602.0115ecst
Publication status	Published - 2015
Event	227th ECS Meeting - Chicago, IL, United States Duration: 24 May 2015 → 28 May 2015

Conference

Conference	227th ECS Meeting
Country/Territory	United States
City	Chicago, IL
Period	24/05/2015 → 28/05/2015

Keywords

Oxygen Electrodes II - May 26 2015 8:00AM

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10.1149/06602.0115ecst

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title = "Structure and Stability of Pt-Y Alloy Particles for Oxygen Reduction Studied by Electron Microscopy",

abstract = "Platinum-yttrium alloy nanoparticles show both a high activity and stability for the oxygen reduction reaction. The catalysts were prepared by magnetron sputter aggregation and mass filtration providing a model catalyst system with a narrow size distribution. The structure and stability of nanostructured Pt-Y alloy catalysts were studied using transmission electron microscopy techniques. Using elemental X-ray mapping and high-resolution electron microscopy, the specific compositional structure and distribution of the individual nanoparticles was unraveled and the stability assessed. Studying the catalyst after reaction and after aging tests shows the development of a core-shell type structure after being exposed to reaction conditions.",

keywords = "Oxygen Electrodes II - May 26 2015 8:00AM",

author = "Davide Deiana and Wagner, {Jakob Birkedal} and Hansen, {Thomas Willum}",

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doi = "10.1149/06602.0115ecst",

language = "English",

volume = "66",

pages = "115--127",

journal = "E C S Transactions",

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publisher = "The Electrochemical Society",

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T1 - Structure and Stability of Pt-Y Alloy Particles for Oxygen Reduction Studied by Electron Microscopy

AU - Deiana, Davide

AU - Wagner, Jakob Birkedal

AU - Hansen, Thomas Willum

PY - 2015

Y1 - 2015

N2 - Platinum-yttrium alloy nanoparticles show both a high activity and stability for the oxygen reduction reaction. The catalysts were prepared by magnetron sputter aggregation and mass filtration providing a model catalyst system with a narrow size distribution. The structure and stability of nanostructured Pt-Y alloy catalysts were studied using transmission electron microscopy techniques. Using elemental X-ray mapping and high-resolution electron microscopy, the specific compositional structure and distribution of the individual nanoparticles was unraveled and the stability assessed. Studying the catalyst after reaction and after aging tests shows the development of a core-shell type structure after being exposed to reaction conditions.

AB - Platinum-yttrium alloy nanoparticles show both a high activity and stability for the oxygen reduction reaction. The catalysts were prepared by magnetron sputter aggregation and mass filtration providing a model catalyst system with a narrow size distribution. The structure and stability of nanostructured Pt-Y alloy catalysts were studied using transmission electron microscopy techniques. Using elemental X-ray mapping and high-resolution electron microscopy, the specific compositional structure and distribution of the individual nanoparticles was unraveled and the stability assessed. Studying the catalyst after reaction and after aging tests shows the development of a core-shell type structure after being exposed to reaction conditions.

KW - Oxygen Electrodes II - May 26 2015 8:00AM

U2 - 10.1149/06602.0115ecst

DO - 10.1149/06602.0115ecst

M3 - Conference article

SN - 1938-5862

VL - 66

SP - 115

EP - 127

JO - E C S Transactions

JF - E C S Transactions

IS - 2

T2 - 227th ECS Meeting

Y2 - 24 May 2015 through 28 May 2015

ER -

Structure and Stability of Pt-Y Alloy Particles for Oxygen Reduction Studied by Electron Microscopy

Abstract

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