Co-catalytic effect of Rh and Ru for the ethanol electro-oxidation in amorphous microparticulated alloys

Tamara C. Blanco; Ángel R. Pierna; Javier Barroso

doi:10.1002/pssc.201000778

Co-catalytic effect of Rh and Ru for the ethanol electro-oxidation in amorphous microparticulated alloys

Tamara C. Blanco^*
, Ángel R. Pierna
, Javier Barroso

^*Autor correspondiente de este trabajo

Producción científica: Contribución a una revista › Artículo › revisión exhaustiva

5 Citas (Scopus)

Resumen

The ethanol electro-oxidation on platinum catalyst in acid media leads to the formation of acetaldehyde and acetic acid as main products. Another problem is the poisoning of the electro-catalyst surface with CO formed during the fuel oxidation reaction. To increase the performance of Direct Ethanol Fuel Cells (DEFCs) it is necessary to develop new electrode materials or modification of the existing Pt catalysts. This work presents the electrochemical response to ethanol and CO oxidation of different compositional amorphous alloys obtained by ball milling technique, used as electrodes. Alloys with Ni₅₉Nb₄₀Pt_0.6Rh_0.4 and Ni₅₉Nb₄₀Pt_0.6Rh_0.2Ru_0.2 composi-tions were studied. The current density towards ethanol oxidation decreases with the presence of ruthenium; however, this electrode shows the best tolerance to CO, with lower surface coverage.

Idioma original	Inglés
Páginas (desde-hasta)	3187-3190
Número de páginas	4
Publicación	Physica Status Solidi (C) Current Topics in Solid State Physics
Volumen	8
N.º	11-12
DOI	https://doi.org/10.1002/pssc.201000778
Estado	Publicada - nov 2011
Publicado de forma externa	Sí

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ODS 7: Energía asequible y no contaminante

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title = "Co-catalytic effect of Rh and Ru for the ethanol electro-oxidation in amorphous microparticulated alloys",

abstract = "The ethanol electro-oxidation on platinum catalyst in acid media leads to the formation of acetaldehyde and acetic acid as main products. Another problem is the poisoning of the electro-catalyst surface with CO formed during the fuel oxidation reaction. To increase the performance of Direct Ethanol Fuel Cells (DEFCs) it is necessary to develop new electrode materials or modification of the existing Pt catalysts. This work presents the electrochemical response to ethanol and CO oxidation of different compositional amorphous alloys obtained by ball milling technique, used as electrodes. Alloys with Ni59Nb40Pt0.6Rh0.4 and Ni59Nb40Pt0.6Rh0.2Ru0.2 composi-tions were studied. The current density towards ethanol oxidation decreases with the presence of ruthenium; however, this electrode shows the best tolerance to CO, with lower surface coverage.",

keywords = "Amorphous alloys, Catalyst, Electro-oxidation, Ethanol",

author = "Blanco, \{Tamara C.\} and Pierna, \{{\'A}ngel R.\} and Javier Barroso",

year = "2011",

month = nov,

doi = "10.1002/pssc.201000778",

language = "English",

volume = "8",

pages = "3187--3190",

journal = "Physica Status Solidi (C) Current Topics in Solid State Physics",

issn = "1862-6351",

publisher = "Wiley-VCH Verlag",

number = "11-12",

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TY - JOUR

T1 - Co-catalytic effect of Rh and Ru for the ethanol electro-oxidation in amorphous microparticulated alloys

AU - Blanco, Tamara C.

AU - Pierna, Ángel R.

AU - Barroso, Javier

PY - 2011/11

Y1 - 2011/11

N2 - The ethanol electro-oxidation on platinum catalyst in acid media leads to the formation of acetaldehyde and acetic acid as main products. Another problem is the poisoning of the electro-catalyst surface with CO formed during the fuel oxidation reaction. To increase the performance of Direct Ethanol Fuel Cells (DEFCs) it is necessary to develop new electrode materials or modification of the existing Pt catalysts. This work presents the electrochemical response to ethanol and CO oxidation of different compositional amorphous alloys obtained by ball milling technique, used as electrodes. Alloys with Ni59Nb40Pt0.6Rh0.4 and Ni59Nb40Pt0.6Rh0.2Ru0.2 composi-tions were studied. The current density towards ethanol oxidation decreases with the presence of ruthenium; however, this electrode shows the best tolerance to CO, with lower surface coverage.

AB - The ethanol electro-oxidation on platinum catalyst in acid media leads to the formation of acetaldehyde and acetic acid as main products. Another problem is the poisoning of the electro-catalyst surface with CO formed during the fuel oxidation reaction. To increase the performance of Direct Ethanol Fuel Cells (DEFCs) it is necessary to develop new electrode materials or modification of the existing Pt catalysts. This work presents the electrochemical response to ethanol and CO oxidation of different compositional amorphous alloys obtained by ball milling technique, used as electrodes. Alloys with Ni59Nb40Pt0.6Rh0.4 and Ni59Nb40Pt0.6Rh0.2Ru0.2 composi-tions were studied. The current density towards ethanol oxidation decreases with the presence of ruthenium; however, this electrode shows the best tolerance to CO, with lower surface coverage.

KW - Amorphous alloys

KW - Catalyst

KW - Electro-oxidation

KW - Ethanol

UR - https://www.scopus.com/pages/publications/80155195466

U2 - 10.1002/pssc.201000778

DO - 10.1002/pssc.201000778

M3 - Article

AN - SCOPUS:80155195466

SN - 1862-6351

VL - 8

SP - 3187

EP - 3190

JO - Physica Status Solidi (C) Current Topics in Solid State Physics

JF - Physica Status Solidi (C) Current Topics in Solid State Physics

IS - 11-12

ER -

Co-catalytic effect of Rh and Ru for the ethanol electro-oxidation in amorphous microparticulated alloys

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