Trimetallic catalyst based on PtRu modified by irreversible adsorption of Sb for direct ethanol fuel cells

Marta C. Figueiredo; Olli Sorsa; Rosa M. Arán-Ais; Nguyet Doan; Juan M. Feliu; Tanja Kallio

doi:10.1016/j.jcat.2015.04.032

Trimetallic catalyst based on PtRu modified by irreversible adsorption of Sb for direct ethanol fuel cells

Marta C. Figueiredo^*
, Olli Sorsa
, Rosa M. Arán-Ais
, Nguyet Doan
, Juan M. Feliu
, Tanja Kallio

^*Corresponding author for this work

Not published at VTT

Aalto University
Leiden University
University of Alicante

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

24 Citations (Scopus)

Abstract

In this work, PtRu/C-Sb materials prepared by adding a Sb salt to the ink of commercial PtRu/C were studied as catalysts for ethanol oxidation. The prepared trimetallic catalysts showed enhanced properties for ethanol oxidation through a wide range of surface coverages. However, coverage higher than 0.7 of Sb on PtRu/C causes the decrease of the catalytic activity suggesting that specific sites composed of 3 metals are necessary to achieve the highest performance. In situ Fourier Transform Infrared Spectroscopy experiments were also performed to compare the reaction products of the bimetallic and trimetallic catalysts. The catalysts were also tested under fuel cell conditions. Also in this case, higher power densities, higher open-circuit voltages and better stability than the bimetallic substrate were found. With this catalyst preparation method, the catalysts showed 2 times higher current densities than for the PtRu catalysts and 6 times better than for pure Pt anodes.

Original language	English
Pages (from-to)	69-77
Number of pages	9
Journal	Journal of Catalysis
Volume	329
DOIs	https://doi.org/10.1016/j.jcat.2015.04.032
Publication status	Published - 20 May 2015
MoE publication type	A1 Journal article-refereed

Funding

The financial support from Aalto University is acknowledged. This work made use of the Aalto University Nanomicroscopy Center (Aalto-NMC) premises. J.M.F. and R.M.A.A. would like to thank MICINN through Project CTQ2013-44083-P.

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Keywords

Antimony
Direct ethanol fuel cells
Irreversible adsorption
PtRu catalysts

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10.1016/j.jcat.2015.04.032

Cite this

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title = "Trimetallic catalyst based on PtRu modified by irreversible adsorption of Sb for direct ethanol fuel cells",

abstract = "In this work, PtRu/C-Sb materials prepared by adding a Sb salt to the ink of commercial PtRu/C were studied as catalysts for ethanol oxidation. The prepared trimetallic catalysts showed enhanced properties for ethanol oxidation through a wide range of surface coverages. However, coverage higher than 0.7 of Sb on PtRu/C causes the decrease of the catalytic activity suggesting that specific sites composed of 3 metals are necessary to achieve the highest performance. In situ Fourier Transform Infrared Spectroscopy experiments were also performed to compare the reaction products of the bimetallic and trimetallic catalysts. The catalysts were also tested under fuel cell conditions. Also in this case, higher power densities, higher open-circuit voltages and better stability than the bimetallic substrate were found. With this catalyst preparation method, the catalysts showed 2 times higher current densities than for the PtRu catalysts and 6 times better than for pure Pt anodes.",

keywords = "Antimony, Direct ethanol fuel cells, Irreversible adsorption, PtRu catalysts",

author = "Figueiredo, \{Marta C.\} and Olli Sorsa and Ar{\'a}n-Ais, \{Rosa M.\} and Nguyet Doan and Feliu, \{Juan M.\} and Tanja Kallio",

note = "Funding Information: The financial support from Aalto University is acknowledged. This work made use of the Aalto University Nanomicroscopy Center (Aalto-NMC) premises. J.M.F. and R.M.A.A. would like to thank MICINN through Project CTQ2013-44083-P. Publisher Copyright: {\textcopyright} 2015 Elsevier Inc. All rights reserved. Copyright: Copyright 2018 Elsevier B.V., All rights reserved.",

year = "2015",

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doi = "10.1016/j.jcat.2015.04.032",

language = "English",

volume = "329",

pages = "69--77",

journal = "Journal of Catalysis",

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T1 - Trimetallic catalyst based on PtRu modified by irreversible adsorption of Sb for direct ethanol fuel cells

AU - Figueiredo, Marta C.

AU - Sorsa, Olli

AU - Arán-Ais, Rosa M.

AU - Doan, Nguyet

AU - Feliu, Juan M.

AU - Kallio, Tanja

N1 - Funding Information: The financial support from Aalto University is acknowledged. This work made use of the Aalto University Nanomicroscopy Center (Aalto-NMC) premises. J.M.F. and R.M.A.A. would like to thank MICINN through Project CTQ2013-44083-P. Publisher Copyright: © 2015 Elsevier Inc. All rights reserved. Copyright: Copyright 2018 Elsevier B.V., All rights reserved.

PY - 2015/5/20

Y1 - 2015/5/20

N2 - In this work, PtRu/C-Sb materials prepared by adding a Sb salt to the ink of commercial PtRu/C were studied as catalysts for ethanol oxidation. The prepared trimetallic catalysts showed enhanced properties for ethanol oxidation through a wide range of surface coverages. However, coverage higher than 0.7 of Sb on PtRu/C causes the decrease of the catalytic activity suggesting that specific sites composed of 3 metals are necessary to achieve the highest performance. In situ Fourier Transform Infrared Spectroscopy experiments were also performed to compare the reaction products of the bimetallic and trimetallic catalysts. The catalysts were also tested under fuel cell conditions. Also in this case, higher power densities, higher open-circuit voltages and better stability than the bimetallic substrate were found. With this catalyst preparation method, the catalysts showed 2 times higher current densities than for the PtRu catalysts and 6 times better than for pure Pt anodes.

AB - In this work, PtRu/C-Sb materials prepared by adding a Sb salt to the ink of commercial PtRu/C were studied as catalysts for ethanol oxidation. The prepared trimetallic catalysts showed enhanced properties for ethanol oxidation through a wide range of surface coverages. However, coverage higher than 0.7 of Sb on PtRu/C causes the decrease of the catalytic activity suggesting that specific sites composed of 3 metals are necessary to achieve the highest performance. In situ Fourier Transform Infrared Spectroscopy experiments were also performed to compare the reaction products of the bimetallic and trimetallic catalysts. The catalysts were also tested under fuel cell conditions. Also in this case, higher power densities, higher open-circuit voltages and better stability than the bimetallic substrate were found. With this catalyst preparation method, the catalysts showed 2 times higher current densities than for the PtRu catalysts and 6 times better than for pure Pt anodes.

KW - Antimony

KW - Direct ethanol fuel cells

KW - Irreversible adsorption

KW - PtRu catalysts

UR - https://www.scopus.com/pages/publications/84930504727

U2 - 10.1016/j.jcat.2015.04.032

DO - 10.1016/j.jcat.2015.04.032

M3 - Article

AN - SCOPUS:84930504727

SN - 0021-9517

VL - 329

SP - 69

EP - 77

JO - Journal of Catalysis

JF - Journal of Catalysis

ER -

Trimetallic catalyst based on PtRu modified by irreversible adsorption of Sb for direct ethanol fuel cells

Abstract

Funding

UN SDGs

Keywords

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