Highly active PtRuFe/C catalyst for methanol electro-oxidation

被引：74

作者：

Jeon, Min Ku

Won, Jung Yeon

Lee, Ki Rak

Woo, Seong Ihl

机构：

[1] Korea Adv Inst Sci & Technol, Dept Chem & Biomol Engn, BK21 Grad Program, Taejon 305701, South Korea

[2] Korea Adv Inst Sci & Technol, Ctr Ultramicrochem Proc Syst, Taejon 305701, South Korea

来源：

ELECTROCHEMISTRY COMMUNICATIONS | 2007年 / 9卷 / 09期

关键词：

methanol electro-oxidation; electrocatalysis; direct methanol fuel cell; CO stripping; cyclic voltammetry;

D O I：

10.1016/j.elecom.2007.06.014

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

High methanol electro-oxidation activity was obtained on novel PtRuFe/C (2:1:1 at.%) catalyst. Mass and specific activities were 5.67 A g(-1) catal. and 177 mA m(-2) for the PtRuFe/C catalyst while those of the commercial PtRu/C catalyst were 2.28 A g(-1) catal. and 87.7 mA m(-2), respectively. CO stripping results showed that on-set voltage for CO electro-oxidation was lowered by incorporation of Fe. XRD and XPS results revealed that Fe2O3 was formed instead of Fe(0), which resulted in large electron deficiency in Pt and easy CO electro-oxidation. The electron deficiency of Pt was proved by XPS results of Pt4f peaks, which moved to higher binding energies in PtRuFe/C than PtRu/C. (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：2163 / 2166

页数：4

共 14 条

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