Electroreduction of oxygen on Vulcan carbon supported Pd nanoparticles and Pd-M nanoalloys in acid and alkaline solutions

被引：69

作者：

Alexeyeva, N. ^{[1
]}

Sarapuu, A. ^{[1
]}

Tammeveski, K. ^{[1
]}

Vidal-Iglesias, F. J. ^{[2
]}

Solla-Gullon, J. ^{[2
]}

Feliu, J. M. ^{[2
]}

机构：

[1] Univ Tartu, Inst Chem, EE-50411 Tartu, Estonia

[2] Univ Alicante, Inst Electroquim, E-03080 Alicante, Spain

来源：

ELECTROCHIMICA ACTA | 2011年 / 56卷 / 19期

关键词：

Oxygen reduction; Electrocatalysis; Palladium nanoparticles; Pd-based catalysts; Vulcan carbon; PALLADIUM ALLOY ELECTROCATALYSTS; SINGLE-CRYSTAL ELECTRODES; REDUCTION REACTION; SULFURIC-ACID; ELECTROCHEMICAL-BEHAVIOR; ORR ACTIVITY; PLATINUM; CATALYSTS; MONOLAYER; KINETICS;

D O I：

10.1016/j.electacta.2011.05.058

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The kinetics of O-2 reduction on novel electrocatalyst materials deposited on carbon substrates were studied using the rotating disk electrode (RDE) technique. Palladium nanoparticles and Pd-M (PdCo and PdFe) nanoalloys supported on Vulcan XC-72R were prepared using two different synthetic routes. The catalyst samples were examined by transmission electron microscopy (TEM) and the average size of metal nanoparticles was determined. Electrochemical measurements were performed in 0.5 M H2SO4 and in 0.1 M NaOH solutions. The influence of different synthetic conditions on the values of specific activity and other kinetic parameters was investigated. These parameters were determined from the Tafel plots taking into account the real electroactive area for each electrode. Pd nanoparticles and Pd-M nanoalloys exhibit significantly high electrocatalytic activity for the four-electron reduction of oxygen to water. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：6702 / 6708

页数：7

共 69 条

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