Rotating disc electrode study of Pt-Co-Cs2.5PW12O40 composite electrodes toward oxygen reduction reaction

被引：18

作者：

Dsoke, S. ^{[1
]}

Moretti, A. ^{[1
]}

Giuli, G. ^{[2
]}

Marassi, R. ^{[1
]}

机构：

[1] Univ Camerino, Dept Chem, I-62032 Camerino, MC, Italy

[2] Univ Camerino, Dept Earth Sci, I-62032 Camerino, MC, Italy

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2011年 / 36卷 / 13期

关键词：

Oxygen reduction; Alloy catalyst; Polyoxometallates Cs2.5H0.5PW12O40; PEM fuel cell; SUPPORTED PLATINUM NANOPARTICLES; ALLOY CATALYSTS; ELECTROCATALYSTS; ACTIVATION; PEMFCS;

D O I：

10.1016/j.ijhydene.2011.01.101

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：

The oxygen reduction reaction (ORR) has been studied using different types of carbon supported Pt-Co alloys and (Pt-Co)-Cs2.5H0.5PW12O40 composite electrodes. The composite electrodes, prepared using different methods, have been characterized by RDE voltammetry in O-2 saturated acidic media. The composite electrodes show better performances toward ORR than the commercial pristine catalyst in terms of mass activities and half wave potentials. The composite prepared using the in house Pt-Co alloy shows the higher catalytic activity. The analysis of XRD spectra of the home-made Pt-Co alloy reveals the presence of different phases (fct and fcc) that probably justify the better catalytic properties. Copyright (C) 2011, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.

引用

页码：8098 / 8102

页数：5

共 23 条

[1] Effects of geometric and electronic factors on ORR activity of carbon supported Pt-Co electrocatalysts in PEM fuel cells [J].