Oxygen reduction reaction on carbon-supported palladium nanocubes in alkaline media

被引：42

作者：

Luesi, Madis ^{[1
]}

Erikson, Heiki ^{[1
]}

Sarapuu, Ave ^{[1
]}

Tammeveski, Kaido ^{[1
]}

Solla-Gullon, Jose ^{[2
]}

Feliu, Juan M. ^{[2
]}

机构：

[1] Univ Tartu, Inst Chem, Ravila 14a, EE-50411 Tartu, Estonia

[2] Univ Alicante, Inst Electroquim, Apartado 99, E-03080 Alicante, Spain

来源：

ELECTROCHEMISTRY COMMUNICATIONS | 2016年 / 64卷

关键词：

Oxygen reduction; Pd nanocubes; Supported catalysts; Electrocatalysis; CUBIC PD NANOPARTICLES; ELECTROCHEMICAL-BEHAVIOR; AQUEOUS-SOLUTIONS; ACID; NANOCRYSTALS; ELECTROCATALYSIS; ELECTROREDUCTION; OXIDATION; ADSORPTION; ELECTRODE;

D O I：

10.1016/j.elecom.2015.12.016

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Carbon-supported Pd nanocubes with the size of 30, 10 and 7 nm were prepared and their electrocatalytic activity towards the oxygen reduction reaction (ORR) in alkaline solution was studied. For comparison carbon-supported spherical Pd nanoparticles and commercial Pd/C catalyst were used. The catalysts were characterised by transmission electron microscopy, electro-oxidation of carbon monoxide and cyclic voltammetry and the ORR activity was evaluated using the rotating disk electrode method. The ORR on all studied Pd/C catalysts proceeded via four-electron pathway where the rate-limiting step was the transfer of the first electron to O-2 molecule. The specific activity of Pd nanocubes was more than two times higher than that of spherical Pd nanoparticles and increased with increasing the particle size. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：9 / 13

页数：5

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