Carbon-Nb0.07Ti0.93O2 composite supported Pt-Pd electrocatalysts for PEM fuel cell oxygen reduction reaction

被引：30

作者：

Ignaszak, Anna ^{[1
]}

Song, Chaojie ^{[1
]}

Zhu, Weimin ^{[1
]}

Wang, Yan-Jie ^{[1
]}

Zhang, Jiujun ^{[1
]}

Bauer, Alex ^{[1
]}

Baker, Ryan ^{[1
]}

Neburchilov, Vladimir ^{[1
]}

Ye, Siyu ^{[2
]}

Campbell, Stephen ^{[3
]}

机构：

[1] Natl Res Council Canada, Inst Fuel Cell Innovat, Vancouver, BC V6T 1W5, Canada

[2] Ballard Power Syst Inc, Burnaby, BC V5J 5J8, Canada

[3] AFCC Automot Fuel Cell Cooperat Corp, Burnaby, BC V5J 5J8, Canada

来源：

ELECTROCHIMICA ACTA | 2012年 / 75卷

关键词：

Pt-Pd alloys; NbTiO2-carbon composite support; Oxygen reduction reaction; Fuel cell catalysts; ELECTROCHEMICAL ACTIVITY; CATALYST SUPPORT; CARBON SUPPORT; CO-TOLERANCE; THIN-FILM; METHANOL; PLATINUM; NANOPARTICLES; TIO2; OXIDATION;

D O I：

10.1016/j.electacta.2012.04.111

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Carbon-Nb0.07Ti0.93O2 (C-67 (wt%)-(Nb0.07Ti0.93O2)(33) (wt%)) composite support for Pt0.55Pd0.45 alloy catalysts was prepared by hydrolysis of metal alkoxides in the presence of carbon. Physical characterization by XRD. EDX, BET. TEM and TGA showed that the Nb0.07Ti0.93O2 was well distributed on the carbon particle surface with an average particle size of 15 nm. and this support has a high surface area of 176 m(2)/g and a similar porosity to that of carbon used to prepare this composite support. Pt0.55Pd0.45 alloy nanoparticles were deposited on the composite support to form a Pt0.55Pd0.45/C-67 (wt%)-(Nb0.07Ti0.93O2)(33) (wt%) catalyst, which shows a higher catalytic activity toward ORR than those of monometallic counterpart Pt/C-67 (wt%)-(Nb0.07Ti0.93O2)(33) (wt%), Pt0.55Pd0.45/C, and Pt0.55Pd0.45/Nb0.07Ti0.93O2. Pt0.55Pd0.45/C-67 (wt%)-(Nb0.07Ti0.93O2)(33) (wt%) showed higher stability than Pt0.55Pd0.45/C, and similar to the commercially available Pt/C catalyst. (C) 2012 Published by Elsevier Ltd.

引用

页码：220 / 228

页数：9

共 43 条

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