The Role of Tungsten Oxide in Enhancing the Carbon Monoxide Tolerance of Platinum-Based Hydrogen Oxidation Catalysts

Douglas W. G.  Stewart; Keith  Scott; Andrew J.  Wain; Timothy E.  Rosser; Edward  Brightman; Donald Macphee; Mohamed  Mamlouk

doi:10.1021/acsami.0c07804

The Role of Tungsten Oxide in Enhancing the Carbon Monoxide Tolerance of Platinum-Based Hydrogen Oxidation Catalysts

Douglas W. G. Stewart^* (Corresponding Author), Keith Scott, Andrew J. Wain, Timothy E. Rosser, Edward Brightman, Donald Macphee, Mohamed Mamlouk

^*Corresponding author for this work

Chemistry

Research output: Contribution to journal › Article › peer-review

11 Citations (Scopus)

Abstract

Significant reductions in total cost of ownership can be realized by engineering PEM fuel cells to run on low-purity hydrogen. One of the main drawbacks of low-purity hydrogen fuels is the carbon monoxide fraction, which poisons platinum electrocatalysts and reduces the power output below useful levels. Platinum- tungsten oxide catalyst systems have previously shown high levels of CO tolerance during both ex situ and in situ investigations. In this work, we explore the mechanism of enhanced tolerance using in situ electrochemical attenuated total reflection–infrared (ATR-IR) and Raman spectroscopy methods and investigate, using a mixture of Pt/C and WO3 powders, the role of the WV/WVI redox couple in the oxidation of adsorbed CO.

Original language	English
Pages (from-to)	37079-37091
Number of pages	13
Journal	ACS Applied Materials & Interfaces
Volume	12
Issue number	33
Early online date	21 Jul 2020
DOIs	https://doi.org/10.1021/acsami.0c07804
Publication status	Published - 19 Aug 2020

Bibliographical note

ACKNOWLEDGMENTS:
XPS data collection was performed at the EPSRC National Facility for XPS (“HarwellXPS”), operated by Cardiff University and UCL, under Contract No. PR16195. This research was supported by Enocell Ltd. and the Analysis for Innovators Program, funded by Innovate UK and the UK Department of Business, Energy and Industrial Strategy (BEIS).

Keywords

fuel cell
hydrogen
ATR-IR
carbon monoxide oxidation
tungsten trioxide
platinum

Access to Document

10.1021/acsami.0c07804Licence: Unspecified

Cite this

@article{54935a04b0a44d1c931d44251fa87295,

title = "The Role of Tungsten Oxide in Enhancing the Carbon Monoxide Tolerance of Platinum-Based Hydrogen Oxidation Catalysts",

abstract = "Significant reductions in total cost of ownership can be realized by engineering PEM fuel cells to run on low-purity hydrogen. One of the main drawbacks of low-purity hydrogen fuels is the carbon monoxide fraction, which poisons platinum electrocatalysts and reduces the power output below useful levels. Platinum- tungsten oxide catalyst systems have previously shown high levels of CO tolerance during both ex situ and in situ investigations. In this work, we explore the mechanism of enhanced tolerance using in situ electrochemical attenuated total reflection–infrared (ATR-IR) and Raman spectroscopy methods and investigate, using a mixture of Pt/C and WO3 powders, the role of the WV/WVI redox couple in the oxidation of adsorbed CO.",

keywords = "fuel cell, hydrogen, ATR-IR, carbon monoxide oxidation, tungsten trioxide, platinum",

author = "Stewart, {Douglas W. G.} and Keith Scott and Wain, {Andrew J.} and Rosser, {Timothy E.} and Edward Brightman and Donald Macphee and Mohamed Mamlouk",

note = "ACKNOWLEDGMENTS: XPS data collection was performed at the EPSRC National Facility for XPS (“HarwellXPS”), operated by Cardiff University and UCL, under Contract No. PR16195. This research was supported by Enocell Ltd. and the Analysis for Innovators Program, funded by Innovate UK and the UK Department of Business, Energy and Industrial Strategy (BEIS).",

year = "2020",

month = aug,

day = "19",

doi = "10.1021/acsami.0c07804",

language = "English",

volume = "12",

pages = "37079--37091",

journal = "ACS Applied Materials & Interfaces",

issn = "1944-8244",

publisher = "American Chemical Society",

number = "33",

}

TY - JOUR

T1 - The Role of Tungsten Oxide in Enhancing the Carbon Monoxide Tolerance of Platinum-Based Hydrogen Oxidation Catalysts

AU - Stewart, Douglas W. G.

AU - Scott, Keith

AU - Wain, Andrew J.

AU - Rosser, Timothy E.

AU - Brightman, Edward

AU - Macphee, Donald

AU - Mamlouk, Mohamed

N1 - ACKNOWLEDGMENTS: XPS data collection was performed at the EPSRC National Facility for XPS (“HarwellXPS”), operated by Cardiff University and UCL, under Contract No. PR16195. This research was supported by Enocell Ltd. and the Analysis for Innovators Program, funded by Innovate UK and the UK Department of Business, Energy and Industrial Strategy (BEIS).

PY - 2020/8/19

Y1 - 2020/8/19

N2 - Significant reductions in total cost of ownership can be realized by engineering PEM fuel cells to run on low-purity hydrogen. One of the main drawbacks of low-purity hydrogen fuels is the carbon monoxide fraction, which poisons platinum electrocatalysts and reduces the power output below useful levels. Platinum- tungsten oxide catalyst systems have previously shown high levels of CO tolerance during both ex situ and in situ investigations. In this work, we explore the mechanism of enhanced tolerance using in situ electrochemical attenuated total reflection–infrared (ATR-IR) and Raman spectroscopy methods and investigate, using a mixture of Pt/C and WO3 powders, the role of the WV/WVI redox couple in the oxidation of adsorbed CO.

AB - Significant reductions in total cost of ownership can be realized by engineering PEM fuel cells to run on low-purity hydrogen. One of the main drawbacks of low-purity hydrogen fuels is the carbon monoxide fraction, which poisons platinum electrocatalysts and reduces the power output below useful levels. Platinum- tungsten oxide catalyst systems have previously shown high levels of CO tolerance during both ex situ and in situ investigations. In this work, we explore the mechanism of enhanced tolerance using in situ electrochemical attenuated total reflection–infrared (ATR-IR) and Raman spectroscopy methods and investigate, using a mixture of Pt/C and WO3 powders, the role of the WV/WVI redox couple in the oxidation of adsorbed CO.

KW - fuel cell

KW - hydrogen

KW - ATR-IR

KW - carbon monoxide oxidation

KW - tungsten trioxide

KW - platinum

UR - http://www.scopus.com/inward/record.url?scp=85089768587&partnerID=8YFLogxK

U2 - 10.1021/acsami.0c07804

DO - 10.1021/acsami.0c07804

M3 - Article

SN - 1944-8244

VL - 12

SP - 37079

EP - 37091

JO - ACS Applied Materials & Interfaces

JF - ACS Applied Materials & Interfaces

IS - 33

ER -

The Role of Tungsten Oxide in Enhancing the Carbon Monoxide Tolerance of Platinum-Based Hydrogen Oxidation Catalysts

Abstract

Bibliographical note

Keywords

Access to Document

Other files and links

Fingerprint

Cite this