Tin oxide - mesoporous carbon composites as platinum catalyst supports for ethanol oxidation and oxygen reduction

被引：28
|
作者：
Hogue, Md Ariful [1 ]
Higgins, Drew C. [1 ]
Hassan, Fathy M. [1 ]
Choi, Ja-Yeon [1 ]
Pritzker, Mark D. [1 ]
Chen, Zhongwei [1 ]
机构：
[1] Univ Waterloo, Waterloo Inst Sustainable Energy, Waterloo Inst Nanotechnol, Dept Chem Engn, Waterloo, ON N2L 3G1, Canada
来源：
ELECTROCHIMICA ACTA | 2014年 / 121卷
基金：
加拿大自然科学与工程研究理事会;
关键词：
metal oxide-carbon composite; fuel cell; ethanol oxidation reaction; oxygen reduction reaction; mesoporous carbon; TEMPERATURE FUEL-CELLS; ELECTROCATALYSTS; NANOPARTICLES; ELECTROOXIDATION; NANOTUBES; DURABILITY; NANOWIRES; PTSN/C;
D O I：
10.1016/j.electacta.2013.12.075
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
Unique tin oxide-mesoporous carbon (SnO2-CMK-3) composites have been synthesized as platinum nanoparticle electrocatalyst supports for low temperature fuel cell applications. In comparison with state-of-the-art commercial carbon-supported platinum (Pt/C) and pure CMK-3-supported platinum (Pt/CMK-3), Pt/SnO2-CMK3 demonstrated improved Pt-mass and surface area based ethanol oxidation reaction (EOR) activity through half-cell electrochemical investigations, providing a 64.7 and 97.6 mV reduction in overpotential at 100 mA mg(Pt)(-1) upon comparison to Pt/CMK-3 and commercial Pt/C. Furthermore, improvements to the oxygen reduction reaction (ORR) kinetics were observed, with Pt/SnO2-CMK3 providing a kinetic current density of 3.40 mAcm(-2) at an electrode potential of 0.9 V vs RHE. The improved performance of Pt/SnO2-CMK-3 for EOR and ORR was attributed to the beneficial impact of the support properties, along with potential interactions occurring between the support and catalyst particles. Complemented by extensive physicochemical characterization, these unique materials show high promise for application in low temperature fuel cells. (C) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码：421 / 427
页数：7
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