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^*, Keith Scott, Andrew J. Wain, Timothy E. Rosser, Edward Brightman, Donald MacPhee, Mohamed Mamlouk

^*Corresponding author for this work

Chemical And Process Engineering

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

16 Citations (Scopus)

94 Downloads (Pure)

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 and 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

Keywords

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

Access to Document

10.1021/acsami.0c07804

Stewart-etal-AMI-2020-The-role-of-tungsten-oxide-in-enhancing-the-carbon-monoxide-toleranceAccepted author manuscript, 1.27 MB

https://eprints.ncl.ac.uk/270395

Cite this

@article{e43d43cdf88240eeaaeef75a8233e37e,

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

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",

year = "2020",

month = aug,

day = "19",

doi = "10.1021/acsami.0c07804",

language = "English",

volume = "12",

pages = "37079--37091",

journal = "ACS Applied Materials and 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

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 - ATR-IR

KW - carbon monoxide oxidation

KW - fuel cell

KW - hydrogen

KW - platinum

KW - tungsten trioxide

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

U2 - 10.1021/acsami.0c07804

DO - 10.1021/acsami.0c07804

M3 - Article

C2 - 32692534

AN - SCOPUS:85089768587

SN - 1944-8244

VL - 12

SP - 37079

EP - 37091

JO - ACS Applied Materials and Interfaces

JF - ACS Applied Materials and Interfaces

IS - 33

ER -

The role of tungsten oxide in enhancing the carbon monoxide tolerance of platinum-based hydrogen oxidation catalysts

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this