Journal
JOURNAL OF POWER SOURCES
Volume 196, Issue 10, Pages 4499-4505Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2011.01.030
Keywords
Tin dioxide; Platinum catalyst; Electrooxidation; Methanol; Ethanol
Funding
- NSFC [60976055]
- NSFDYS [50925205]
- Postgraduates' Science and Innovation Fund [201005B1A0010339]
- Innovative Training Project of the 3rd-211 Project [S-09109]
- Chongqing University
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SnO2 nanoflowers and nanorods have been synthesized by the hydrothermal method without using any capping agent. Both types of SnO2 nanostructures are selected as a support of Pt catalyst for methanol and ethanol electrooxidation. The synthesized SnO2 nanostructures and SnO2 supported platinum (Pt/SnO2) catalysts are characterized by X-ray diffraction, scanning electron microscope and high resolution transmission electron microscope. The electrocatalytic properties of the Pt/SnO2 and Pt/C catalysts for methanol and ethanol oxidation have been investigated systematically by typical electrochemical methods. The influence of SnO2 morphology on its electrocatalytic activity is comparatively investigated. The Pt/SnO2 flower-shaped catalyst shows higher electrocatalytic activity and better long-term cycle stability compared with other electrocatalysts owing to the multidimensional active sites and radial channels of liquid diffusion. (C) 2011 Elsevier B.V. All rights reserved.
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