PtCu catalyst for the electro-oxidation of ethanol in an alkaline direct alcohol fuel cell

被引：69
|
作者：
Maya-Cornejo, J. [1 ,2 ]
Carrera-Cerritos, R. [3 ]
Sebastian, D. [2 ]
Ledesma-Garcia, J. [4 ]
Arriaga, L. G. [5 ]
Arico, A. S. [2 ]
Baglio, V. [2 ]
机构：
[1] UNAM, Ctr Fis Aplicada & Tecnol Avanzada, Blvd Juriquilla 3001, Queretaro 76230, Mexico
[2] CNR, Ist Tecnol Avanzate Energia Nicola Giordano, Via Salita S Lucia Contesse 5, I-98126 Messina, Italy
[3] IPN UPIIG, Unidad Profes Interdisciplinaria Ingn Campus Guan, Av Mineral Valenciana 200, Guanajuato 36275, Mexico
[4] Univ Autonoma Queretaro, Cerro Las Campanas S-N, Las Campanas 76010, Santiago De Que, Mexico
[5] Ctr Invest & Desarrollo Tecnol Electroquim, Parque Tecnol Queretaro S-N Sanfandila, Pedro Escobedo 76703, Queretaro, Mexico
来源：
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2017年 / 42卷 / 46期
关键词：
Ethanol electro-oxidation; Alkaline media; Anion-exchange-membrane; Fuel cell; Platinum; Copper; ANION-EXCHANGE MEMBRANES; X-RAY ELECTRON; OXIDATION REACTION; CORE-SHELL; ELECTROCATALYTIC ACTIVITY; METHANOL OXIDATION; CARBON NANOTUBES; ETHYLENE-GLYCOL; NANOPARTICLES; PALLADIUM;
D O I：
10.1016/j.ijhydene.2017.07.226
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
A PtCu electrocatalyst was synthesized using a galvanic displacement route obtaining nanoparticles with a semi-spherical morphology and an average size of 4 nm, supported on carbon black (Vulcan). The crystallographic characterization by X-ray diffraction showed a certain degree of Pt-Cu alloying. The electrocatalytic activity of the prepared electrocatalyst for the electro-oxidation of ethanol in alkaline media was investigated. A 2-fold increase of the peak current density and a negative shift of the potential were recorded in half-cell experiments for the bimetallic catalyst compared to a commercial Pt/C. The presence of Cu promotes ethanol oxidation in alkaline electrolyte by hindering the Pt-H adsorption at low overpotentials. Additionally, the PtCu electrocatalyst was used as anode in an anion-exchange-membrane direct ethanol fuel cell (AEM-DEFC) exhibiting about 2 fold higher power density than the benchmark Pt/C. (C) 2017 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：27919 / 27928
页数：10
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