Tungsten Carbide Microspheres with High Surface Area as Platinum Catalyst Supports for Enhanced Electrocatalytic Activity

被引：25

作者：

Xiong, Leyan ^{[1
]}

Zheng, Longzhen ^{[1
]}

Liu, Chuanfei ^{[2
]}

Jin, Lehong ^{[2
]}

Liu, Qiang ^{[1
]}

Xu, Jingpeng ^{[1
]}

机构：

[1] East China Jiao Tong Univ, Dept Chem & Chem Engn, Nanchang 330013, Jiangxi, Peoples R China

[2] Hangzhou Normal Univ, Dept Basic Med, Hangzhou 310036, Zhejiang, Peoples R China

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 2015年 / 162卷 / 04期

基金：

中国国家自然科学基金;

关键词：

FUEL-CELLS; METHANOL ELECTROOXIDATION; OXYGEN REDUCTION; HIGH-PERFORMANCE; STABILITY; OXIDATION; NANOPARTICLES;

D O I：

10.1149/2.0961504jes

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Tungsten carbide (WC) support is synthesized by the template of amorphous carbon microspheres (CMS), which is prepared by a hydrothermal synthesis process using glucose as the carbon precursor. The WC/CMS support is characterized by XRD, SEM, and BET. Pt nanparticles are loaded on the WC/CMS support and Pt/WC/CMS catalyst is formed. The onset potential of oxygen reduction reaction (ORR) on Pt/WC/CMS is 120 mV higher than that on Pt/C, indicating the superior ORR performance of Pt/WC/CMS. The Pt/WC/CMS catalyst shows higher electrocatalytic activity for ethanol electrooxidation than Pt/C (E-TEK). The higher I-f/I-b ratio of Pt/WC/CMS indicates better resistance to carbon monoxide poisoning on the Pt/WC/CMS. The rate constant of oxygen reduction reaction for Pt/WC/CMS is twice as high as that of Pt/C, indicating the synergetic effects between the Pt and the WC support. The electrochemical stability of Pt/WC/CMS is higher than that of Pt/C, which can be attributed to the high stability of WC support. (C) The Author(s) 2015. Published by ECS. All rights reserved.

引用

页码：F468 / F473

页数：6

共 26 条

[1]

[Anonymous], HANDHOOK XRAY PHOTOE

[2] Ceramic materials as supports for low-temperature fuel cell catalysts [J].

Antolini, E. ;

Gonzalez, E. R. .

SOLID STATE IONICS, 2009, 180 (9-10) :746-763

[3] Passive DMFCs with PtRu catalyst on poly(3,4-ethylenedioxythiophene)-polystyrene-4-sulphonate support [J].

Arbizzani, Catia ;

Biso, Maurizio ;

Manferrari, Elisa ;

Mastragostino, Marina .

JOURNAL OF POWER SOURCES, 2008, 180 (01) :41-45

[4] Tungsten-Doped Titanium Dioxide in the Rutile Structure: Theoretical Considerations [J].

Aryanpour, Masoud ;

Hoffmann, Roald ;

DiSalvo, Francis J. .

CHEMISTRY OF MATERIALS, 2009, 21 (08) :1627-1635

[5] Titanium nitride nanoparticles based electrocatalysts for proton exchange membrane fuel cells [J].

Avasarala, Bharat ;

Murray, Thomas ;

Li, Wenzhen ;

Haldar, Pradeep .

JOURNAL OF MATERIALS CHEMISTRY, 2009, 19 (13) :1803-1805

[6] A class of non-precious metal composite catalysts for fuel cells [J].

Bashyam, Rajesh ;

Zelenay, Piotr .

NATURE, 2006, 443 (7107) :63-66

[7] Processing and properties of monolithic TiB2 based materials [J].

Basu, B. ;

Raju, G. B. ;

Suri, A. K. .

INTERNATIONAL MATERIALS REVIEWS, 2006, 51 (06) :352-374

[8] Electrocatalysis by nanocrystalline tungsten carbides and the effects of codeposited silver [J].

Brady, C. D. A. ;

Rees, E. J. ;

Burstein, G. T. .

JOURNAL OF POWER SOURCES, 2008, 179 (01) :17-26

[9] Thermal and electrochemical stability of tungsten carbide catalyst supports [J].

Chhina, H. ;

Campbell, S. ;

Kesler, O. .

JOURNAL OF POWER SOURCES, 2007, 164 (02) :431-440

[10] Tungsten carbide as supports for Pt electrocatalysts with improved CO tolerance in methanol oxidation [J].

Cui, Guofeng ;

Shen, Pei Kang ;

Meng, Hui ;

Zhao, Jie ;

Wu, Gang .

JOURNAL OF POWER SOURCES, 2011, 196 (15) :6125-6130

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