Journal
JOURNAL OF POWER SOURCES
Volume 285, Issue -, Pages 325-333Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2015.03.118
Keywords
Direct borohydride-hydrogen peroxide fuel cell; Anode electrocatalyst; Bimetallic nanocatalyst; Borohydride electrooxidation; Electrocatalytic activity
Funding
- National Natural Science Foundation of China [21203161, 51202066, U1462121]
- Natural Science Foundation of Hunan Province, China [13JJ4051]
- Key research Items in the Science and Technology Program of Hunan Province, China [2013FJ2013, 2013SK3162]
- Open Foundation of the Innovation platform of the Higher Education Institutions of Hunan Province, China [14K091]
- National Science Foundation for Post-doctoral Scientists of China [2014M562120]
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Carbon supported Au-Fe bimetallic nanocatalysts (Au-Fe/C) are facilely prepared via a modified NaBH4 reduction method in aqueous solution at room temperature, and used as the anode electrocatalyst of direct borohydride-hydrogen peroxide fuel cell (DBHFC). The physical and electrochemical properties of the Au-Fe/C electrocatalysts are characterized by transmission electron microscopy (TEM), X-ray diffraction (XRD), cyclic voltammetry (CV), rotating disc electrode (RDE) voltammetry, chronoamperometry (CA), chronopotentiometry (CP), and fuel cell test. The results show that Au-Fe/C catalysts display higher catalytic activity for the direct electrooxidation of BH4- than carbon supported pure Au nanocatalyst (Au/C), especially Au50Fe50/C catalyst presents the highest catalytic activity among all as-prepared catalysts. Besides, the single DBHFC with Au50Fe50/C anode and Au/C cathode obtains the maximum power density as high as 34.9 mW cm(-2) at 25 degrees C. (C) 2015 Elsevier B.V. All rights reserved.
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