Supported Pt-based nanoparticulate catalysts for the electro-oxidation of methanol

An experimental protocol for quantifying its activity

Patricia Hernandez-Fernandez, Peter Brilner Lund, Christian Kallesøe, Henrik Fanø Clausen, Leif Højslet Christensen

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

In here, we propose a simple methodology to evaluate the activity of supported nano-particulate catalysts on the electro-oxidation of methanol in a three-electrode cell. The proof of concept has been made on carbon supported Pt and PtRu commercial catalysts, but the protocol can be extended to all kinds of Pt-based nanoparticles. Even though the electro-oxidation of methanol has been studied for many years, there is no established electrochemical procedure for measuring the performance of a catalyst in such reaction. The conditions in which the measurements are carried out differ between research groups making comparison troublesome, and hence can lead to erroneous interpretation of the
experimental data. Our experiments prove that it is incorrect to compare results obtained from different electrochemical techniques such as cyclic voltammetry or chronoamperometry, which is a common error detected in the literature. We recommend analyzing the catalytic activity in the methanol oxidation reaction by chronoamperometry. This is because it is the only way to account poisoning effects on the catalytic surface, which will determine the performance of the catalyst as anode in a direct methanol fuel cell.
Original languageEnglish
JournalInternational Journal of Hydrogen Energy
Volume40
Issue number1
Pages (from-to)284-291
ISSN0360-3199
DOIs
Publication statusPublished - 2015
Externally publishedYes

Cite this

Hernandez-Fernandez, Patricia ; Lund, Peter Brilner ; Kallesøe, Christian ; Clausen, Henrik Fanø ; Christensen, Leif Højslet. / Supported Pt-based nanoparticulate catalysts for the electro-oxidation of methanol : An experimental protocol for quantifying its activity. In: International Journal of Hydrogen Energy. 2015 ; Vol. 40, No. 1. pp. 284-291.
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abstract = "In here, we propose a simple methodology to evaluate the activity of supported nano-particulate catalysts on the electro-oxidation of methanol in a three-electrode cell. The proof of concept has been made on carbon supported Pt and PtRu commercial catalysts, but the protocol can be extended to all kinds of Pt-based nanoparticles. Even though the electro-oxidation of methanol has been studied for many years, there is no established electrochemical procedure for measuring the performance of a catalyst in such reaction. The conditions in which the measurements are carried out differ between research groups making comparison troublesome, and hence can lead to erroneous interpretation of theexperimental data. Our experiments prove that it is incorrect to compare results obtained from different electrochemical techniques such as cyclic voltammetry or chronoamperometry, which is a common error detected in the literature. We recommend analyzing the catalytic activity in the methanol oxidation reaction by chronoamperometry. This is because it is the only way to account poisoning effects on the catalytic surface, which will determine the performance of the catalyst as anode in a direct methanol fuel cell.",
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Supported Pt-based nanoparticulate catalysts for the electro-oxidation of methanol : An experimental protocol for quantifying its activity. / Hernandez-Fernandez, Patricia; Lund, Peter Brilner; Kallesøe, Christian; Clausen, Henrik Fanø; Christensen, Leif Højslet.

In: International Journal of Hydrogen Energy, Vol. 40, No. 1, 2015, p. 284-291.

Research output: Contribution to journalJournal articleResearchpeer-review

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T2 - An experimental protocol for quantifying its activity

AU - Hernandez-Fernandez, Patricia

AU - Lund, Peter Brilner

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AU - Clausen, Henrik Fanø

AU - Christensen, Leif Højslet

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AB - In here, we propose a simple methodology to evaluate the activity of supported nano-particulate catalysts on the electro-oxidation of methanol in a three-electrode cell. The proof of concept has been made on carbon supported Pt and PtRu commercial catalysts, but the protocol can be extended to all kinds of Pt-based nanoparticles. Even though the electro-oxidation of methanol has been studied for many years, there is no established electrochemical procedure for measuring the performance of a catalyst in such reaction. The conditions in which the measurements are carried out differ between research groups making comparison troublesome, and hence can lead to erroneous interpretation of theexperimental data. Our experiments prove that it is incorrect to compare results obtained from different electrochemical techniques such as cyclic voltammetry or chronoamperometry, which is a common error detected in the literature. We recommend analyzing the catalytic activity in the methanol oxidation reaction by chronoamperometry. This is because it is the only way to account poisoning effects on the catalytic surface, which will determine the performance of the catalyst as anode in a direct methanol fuel cell.

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