Benchmarking Pt and Pt-lanthanide sputtered thin films for oxygen electroreduction: fabrication and rotating disk electrode measurements

Eleonora Zamburlini; Kim Degn Jensen; Ifan E.L. Stephens; Ib Chorkendorff; Maria Escudero Escribano

doi:10.1016/j.electacta.2017.06.146

Benchmarking Pt and Pt-lanthanide sputtered thin films for oxygen electroreduction: fabrication and rotating disk electrode measurements

Eleonora Zamburlini, Kim Degn Jensen, Ifan E.L. Stephens, Ib Chorkendorff, Maria Escudero Escribano

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Abstract

Platinum-lanthanide alloys are very promising as active and stable catalysts for the oxygen reduction reaction (ORR) in low-temperature fuel cells. We have fabricated Pt and Pt₅Gd metallic thin films via (co-)sputtering deposition in an ultra-high vacuum (UHV) chamber. The electrochemical ORR activity, stability, as-well as chemical composition and crystallographic structure of Pt₅Gd thin film catalysts have been investigated using a combination of electrochemical measurements, X-ray photoemission spectroscopy (XPS) and X-ray diffraction (XRD) techniques. We describe the measurement procedures, with the aim of benchmarking electrochemical characterization of Pt-based thin film catalysts for ORR. Pt₅Gd thin films present an activity enhancement by a factor of 4.5 and 2.5 over polycrystalline Pt and Pt thin films, respectively.

Original language	English
Journal	Electrochimica Acta
Volume	247
Pages (from-to)	708-721
Number of pages	14
ISSN	0013-4686
DOIs	https://doi.org/10.1016/j.electacta.2017.06.146
Publication status	Published - 2017

Keywords

Benchmarking
Electrocatalysis
Oxygen Reduction Reaction
Pt-Alloys
Rotating Disk Electrode
Sputtering
Thin Films

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10.1016/j.electacta.2017.06.146

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title = "Benchmarking Pt and Pt-lanthanide sputtered thin films for oxygen electroreduction: fabrication and rotating disk electrode measurements",

abstract = "Platinum-lanthanide alloys are very promising as active and stable catalysts for the oxygen reduction reaction (ORR) in low-temperature fuel cells. We have fabricated Pt and Pt5Gd metallic thin films via (co-)sputtering deposition in an ultra-high vacuum (UHV) chamber. The electrochemical ORR activity, stability, as-well as chemical composition and crystallographic structure of Pt5Gd thin film catalysts have been investigated using a combination of electrochemical measurements, X-ray photoemission spectroscopy (XPS) and X-ray diffraction (XRD) techniques. We describe the measurement procedures, with the aim of benchmarking electrochemical characterization of Pt-based thin film catalysts for ORR. Pt5Gd thin films present an activity enhancement by a factor of 4.5 and 2.5 over polycrystalline Pt and Pt thin films, respectively.",

keywords = "Benchmarking, Electrocatalysis, Oxygen Reduction Reaction, Pt-Alloys, Rotating Disk Electrode, Sputtering, Thin Films",

author = "Eleonora Zamburlini and Jensen, {Kim Degn} and Stephens, {Ifan E.L.} and Ib Chorkendorff and Escribano, {Maria Escudero}",

year = "2017",

doi = "10.1016/j.electacta.2017.06.146",

language = "English",

volume = "247",

pages = "708--721",

journal = "Electrochimica Acta",

issn = "0013-4686",

publisher = "Pergamon Press",

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T1 - Benchmarking Pt and Pt-lanthanide sputtered thin films for oxygen electroreduction

T2 - fabrication and rotating disk electrode measurements

AU - Zamburlini, Eleonora

AU - Jensen, Kim Degn

AU - Stephens, Ifan E.L.

AU - Chorkendorff, Ib

AU - Escribano, Maria Escudero

PY - 2017

Y1 - 2017

N2 - Platinum-lanthanide alloys are very promising as active and stable catalysts for the oxygen reduction reaction (ORR) in low-temperature fuel cells. We have fabricated Pt and Pt5Gd metallic thin films via (co-)sputtering deposition in an ultra-high vacuum (UHV) chamber. The electrochemical ORR activity, stability, as-well as chemical composition and crystallographic structure of Pt5Gd thin film catalysts have been investigated using a combination of electrochemical measurements, X-ray photoemission spectroscopy (XPS) and X-ray diffraction (XRD) techniques. We describe the measurement procedures, with the aim of benchmarking electrochemical characterization of Pt-based thin film catalysts for ORR. Pt5Gd thin films present an activity enhancement by a factor of 4.5 and 2.5 over polycrystalline Pt and Pt thin films, respectively.

AB - Platinum-lanthanide alloys are very promising as active and stable catalysts for the oxygen reduction reaction (ORR) in low-temperature fuel cells. We have fabricated Pt and Pt5Gd metallic thin films via (co-)sputtering deposition in an ultra-high vacuum (UHV) chamber. The electrochemical ORR activity, stability, as-well as chemical composition and crystallographic structure of Pt5Gd thin film catalysts have been investigated using a combination of electrochemical measurements, X-ray photoemission spectroscopy (XPS) and X-ray diffraction (XRD) techniques. We describe the measurement procedures, with the aim of benchmarking electrochemical characterization of Pt-based thin film catalysts for ORR. Pt5Gd thin films present an activity enhancement by a factor of 4.5 and 2.5 over polycrystalline Pt and Pt thin films, respectively.

KW - Benchmarking

KW - Electrocatalysis

KW - Oxygen Reduction Reaction

KW - Pt-Alloys

KW - Rotating Disk Electrode

KW - Sputtering

KW - Thin Films

U2 - 10.1016/j.electacta.2017.06.146

DO - 10.1016/j.electacta.2017.06.146

M3 - Journal article

SN - 0013-4686

VL - 247

SP - 708

EP - 721

JO - Electrochimica Acta

JF - Electrochimica Acta

ER -

Benchmarking Pt and Pt-lanthanide sputtered thin films for oxygen electroreduction: fabrication and rotating disk electrode measurements

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Keywords

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