Carbon supported Pt hollow nanospheres as anode catalysts for direct borohydride-hydrogen peroxide fuel cells

The carbon supported Pt hollow nanospheres were prepared by employing cobalt nanoparticles as sacrificial templates at room temperature in aqueous solution and used as the anode electrocatalyst for direct borohydride-hydrogen peroxide fuel cell (DBHFC). The physical and electrochemical properties of...

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Bibliographic Details
Published in:International journal of hydrogen energy 2011-09, Vol.36 (18), p.11512-11518
Main Authors: Yi, Lanhua, Song, Yunfeng, Yi, Wei, Wang, Xianyou, Wang, Hong, He, Peiying, Hu, Benan
Format: Article
Language:English
Subjects:
Alternative fuels. Production and utilization
Anode electrocatalyst
Applied sciences
Borohydride oxidation
Carbon
Density
Direct borohydride-hydrogen peroxide fuel cell
Electrocatalysts
Energy
Exact sciences and technology
Fuel cells
Fuels
Hydrogen
Nanoparticles
Nanospheres
Peroxides
Platinum
Pt hollow nanospheres
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Summary:The carbon supported Pt hollow nanospheres were prepared by employing cobalt nanoparticles as sacrificial templates at room temperature in aqueous solution and used as the anode electrocatalyst for direct borohydride-hydrogen peroxide fuel cell (DBHFC). The physical and electrochemical properties of the as-prepared electrocatalysts were investigated by transmission electron microscopy (TEM), X-ray diffraction (XRD), cyclic voltammetry (CV), chronoamperometry (CA), chronopotentiometry (CP) and fuel cell test. The results showed that the carbon supported Pt nanospheres were coreless and composed of discrete Pt nanoparticles with the crystallite size of about 2.8 nm. Besides, it has been found that the carbon supported Pt hollow nanospheres exhibited an enhanced electrocatalytic performance for BH 4 − oxidation compared with the carbon supported solid Pt nanoparticles, and the DBHFC using the carbon supported Pt hollow nanospheres as electrocatalyst showed as high as 54.53 mW cm −2 power density at a discharge current density of 44.9 mA cm −2. ► A facile procedure for preparing carbon supported Pt hollow nanospheres was designed and prepared. ► The electrooxidation behavior of BH 4 − on HNPt/C electrode was first investigated by electrochemical techniques. ► The performance of direct borohydride-hydrogen peroxide fuel cell employing HNPt/C as anode catalyst was reported.
ISSN:0360-3199
1879-3487
DOI:10.1016/j.ijhydene.2011.04.077