Ti4O7 supported Ru@Pt core-shell catalyst for CO-tolerance in PEM fuel cell hydrogen oxidation reaction

被引：49

作者：

Zhang, Lei ^{[1
]}

Kim, Jenny ^{[1
]}

Zhang, Jiujun ^{[1
]}

Nan, Feihong ^{[2
]}

Gauquelin, Nicolas ^{[2
]}

Botton, Gianluigi A. ^{[2
]}

He, Ping ^{[3
]}

Bashyam, Rajesh ^{[3
]}

Knights, Shanna ^{[3
]}

机构：

[1] Natl Res Council Canada, Vancouver, BC V6T 1W5, Canada

[2] McMaster Univ, Dept Mat Sci & Engn, Hamilton, ON L8S 4M1, Canada

[3] Ballard Power Syst, Dept R&D, Burnaby, BC V5J 5J8, Canada

来源：

APPLIED ENERGY | 2013年 / 103卷

基金：

加拿大自然科学与工程研究理事会;

关键词：

Ruthenium platinum core-shell electrocatalyst; Carbon monoxide tolerance; Hydrogen oxidation reaction; PEM fuel cells; OXYGEN REDUCTION REACTION; COLLOIDS; ELECTROCATALYSTS; NANOPARTICLES;

D O I：

10.1016/j.apenergy.2012.10.017

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

A new method is developed for synthesizing Ti4O7 supported Ru@Pt core-shell catalyst (Ru@Pt/Ti4O7) through pyrolysis followed by microwave irradiation. The purpose is to improve the Ru durability of PtRu from core-shell structure and strong bonding to Ti4O2 oxide. In this method, the first step is to co-reduce the mixture of ruthenium precursor and TiO2 in a H-2 reducing atmosphere under heat-treatment to obtain a Ru core on Ti4O7 support, and the second step is to create a shell of platinum via microwave irradiation. Energy dispersive X-ray spectrometry, X-ray Diffraction, High-resolution Scanning Transmission Electron Microscopy with the high-angle annular dark-field method and Electron Energy-Loss Spectroscopy are used to demonstrate that this catalyst with larger particles has a core-shell structure with a Ru core and a Pt shell. Electrochemical measurements show Ru@Pt/Ti4O7 catalyst has a higher CO-tolerance capability than that of PtRu/C alloy catalyst. (c) 2012 Published by Elsevier Ltd.

引用

页码：507 / 513

页数：7

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