期刊
ELECTROCHIMICA ACTA
卷 111, 期 -, 页码 855-861出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2013.08.135
关键词
Graphene; Dimethyldiallylammonium chloride; Pd Nanoelectrocatalyst; Ethanol oxidation; Fuel cell
资金
- Postdoctoral Science Foundation [2012M521011]
- College Natural Science Research Program of Jiangsu Province [12KJB150007]
- Natural Science Foundation of Jiangsu Province [BK2010166]
- Science & Technology Support Program of Jiangsu Province [8E2013090]
- Science & Technology Foundation of Zhenjiang, China [GY2012017, GY2013052]
Dimethyldiallylammonium chloride (DMDAAC) modified reduced graphene oxide supported Pd nanopartides (Pd/DMDAAC-RGO) were fabricated by polyol microwave heating method. The Pd/DMDAAC-RGO hybrid were characterized by transmission electromicroscopy (TEM), energy-dispersive X-ray spectroscopy (EDS), X-ray diffraction (XRD) analysis and electrochemical tests. High Pd metal loadings, up to 80 wt. % with a mean size of 1.8 nm, were densely in situ decorated on DMDAAC-modified RGO surfaces. Compared with traditional carbon-based Pd catalysts, Pd/DMDAAC-RGO exhibits better activity and stability for ethanol oxidation in alkaline media with the same Pd content on the electrode. This improved activity indicates that DMDAAC plays a crucial role in the dispersion and stabilization of Pd nanopartides on RGO sheets and DMDAAC-RGO are able to an alternative support for Pd immobilization in direct ethanol fuel cells and other catalytic devices. (c) 2013 Elsevier Ltd. All rights reserved.
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