On the mechanism of ethanol electro-oxidation on Pt and PtSn catalysts: electrochemical and in situ IR reflectance spectroscopy studies

Vigier, F.; Coutanceau, Christophe; Hahn, F.; Belgsir, E.M.; Lamy, C.

doi:10.1016/j.jelechem.2003.08.019

Cited by 533 publications

(383 citation statements)

References 55 publications

Supporting

Mentioning

356

Contrasting

Unclassified

Order By: Relevance

“…Furthermore, ethanol is relatively safer than methanol and has a higher theoretical mass energy than methanol (8 kWh kg −1 vs. 6.1 kWh kg −1 ) [1]. The mechanism of a complete ethanol electro-oxidation reaction (EOR) involves 12 electrons and the breaking of a C-C bond, in contrast to methanol electro-oxidation, which involves only six electrons and no C-C bond breaking on a similar type of anode material.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of quaternary PtRuIrSn/C electrocatalysts for direct ethanol fuel cells

Fatih

Neburchilov

Alzate

et al. 2010

Journal of Power Sources

View full text Add to dashboard Cite

Synthesis and characterization of quaternary PtRuIrSn/C electrocatalysts for direct ethanol fuel cells Fatih, K.; Neburchilov, V.; Alzate, V.; Neagu, R.; Wang, H. 195 (2010) [7168][7169][7170][7171][7172][7173][7174][7175] Contents lists available at ScienceDirect /C electrocatalysts were prepared by a known impregnation-reduction (borohydride) method. The microstructure and chemical composition were determined by X-ray diffraction (XRD), energy dispersive X-ray spectroscopy (EDX) and transmission electron microscopy (TEM). The activity of the electrocatalysts for EOR was compared to commercial Pt 67 Ru 33 /C (HISPEC5000) using linear sweep voltammetry (LSV) based on similar Pt loading. The results of this study show that electrocatalyst composition with 10 and 20% Ir (wt.%) exhibit higher electrocatalytic activity than the commercial PtRu electrocatalyst. 10 Sn 30 /C exhibited both a higher performance with a specific power density of 29 mW mg Pt −1 without O 2 backpressure at the cathode and an excellent long-term stability in a DEFC operating at 90 • C. Journal of Power Sources Journal of Power SourcesCrown

show abstract

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of quaternary PtRuIrSn/C electrocatalysts for direct ethanol fuel cells

Fatih

Neburchilov

Alzate

et al. 2010

Journal of Power Sources

View full text Add to dashboard Cite

show abstract

“…The voltammograms of the electrocatalysts did not display a well-defined hydrogen (Fig. 5b) do not behave as an appropriate anode for EOR due to its poisoning by strongly adsorbed intermediates such as CO ads [40]. However, the introduction of Sn and Ni promotes the electrocatalytic activity.…”

Section: Resultsmentioning

confidence: 99%

Investigation of Nanometals (Ni and Sn) in Platinum-Based Ternary Electrocatalysts for Ethanol Electro-oxidation in Membraneless Fuel Cells

Ponmani

Kiruthika

Muthukumaran

2015

Journal of Electrochemical Science and Technology

View full text Add to dashboard Cite

In the present work, Carbon supported Pt 100 , Pt 80 Sn 20 , Pt 80 Ni 20 and Pt 80 Sn 10 Ni 10 electrocatalysts with different atomic ratios were prepared by ethylene glycol-reduction method to study the electro-oxidation of ethanol in membraneless fuel cell. The electrocatalysts were characterized in terms of structure, morphology and composition by using XRD, TEM and EDX techniques. Transmission electron microscopy measurements revealed a decrease in the mean particle size of the catalysts for the ternary compositions.

show abstract

“…It was also observed that at the first cycle, the hydrogen features do not seem to reflect a blocking of Pt sites because of the presence of absorbed CO. A shift to lower potentials of the onset potential of the CO oxidation was seen for the Pt 3 Sn/C compared with Pt-ETEK/C, although the current density is higher for the Pt-ETEK/C. The bi-functional mechanism seems to operate on the bi metallic Pt 3 Sn/C catalyst because of formation of oxygenated species onto Sn (Vigier, Coutanceau et al, 2004). In addition, the oxidation of CO absorbed occurs over a larger potential on Pt 3 Sn/C compared to Pt-ETEK.…”

Section: Electrochemical Experimentsmentioning

confidence: 87%

A Pt3Sn/C Electrocatalyst Used as the Cathode and Anode in a Single Direct Ethanol Fuel Cell

Parreira¹,

Rascio²,

Silva³

et al. 2012

IJC

View full text Add to dashboard Cite

This paper presents a study involving the use of Pt 3 Sn/C electrocatalysts as cathodes and anodes in a single direct ethanol fuel cell. First, we studied the oxygen reduction reaction (ORR) using commercial Pt/C from ETEK and Pt 3 Sn/C as electrocatalysts with an alloy degree of 92 %. The electrocatalytic activity of the material for oxygen reduction was assessed using the rotating disk electrode technique (RDE). When Pt 3 Sn was tested for ORR in the presence of ethanol, the results showed greater tolerance to the cross-over effect than Pt/C in the electrochemical cell. The experiments in a single direct ethanol fuel cell showed that without oxygen pressurization of the cell, the maximum power density is higher using Pt 3 Sn/C as both cathode and anode than using Pt 3 Sn as an anode and Pt/C as a cathode. When using Pt 3 Sn/C as both the cathode and anode in a direct ethanol fuel cell, cell performance enhances.

show abstract

On the mechanism of ethanol electro-oxidation on Pt and PtSn catalysts: electrochemical and in situ IR reflectance spectroscopy studies

Cited by 533 publications

References 55 publications

Synthesis and characterization of quaternary PtRuIrSn/C electrocatalysts for direct ethanol fuel cells

Synthesis and characterization of quaternary PtRuIrSn/C electrocatalysts for direct ethanol fuel cells

Investigation of Nanometals (Ni and Sn) in Platinum-Based Ternary Electrocatalysts for Ethanol Electro-oxidation in Membraneless Fuel Cells

A Pt3Sn/C Electrocatalyst Used as the Cathode and Anode in a Single Direct Ethanol Fuel Cell

Contact Info

Product

Resources

About