Abstract
The cathode electrocatalyst layers were prepared by in situ growing Pt nanowires (Pt-NWs) in two kinds of matrixes with various Pt loadings for proton exchange membrane fuel cells (PEMFCs). Commercial carbon powder and 20 wt.% Pt/C electrocatalyst were used as the matrix material for the comparison. Scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), polarization curves tests, and electrochemical impedance spectroscopy (EIS) were carried out to examine the effects of the matrix materials on the Pt-NW growing and the electrode performance. The optimum Pt-NW loadings of 0.30 mg cm-2 in the carbon matrix (CM) and 0.20 mg cm-2 for the Pt/C matrix (PM) were obtained. The results indicated that the Pt-NWs grown in the CM had a better crystalline, longer size length and better catalyst activity than those in the PM. The mechanism of the matrix affection is further discussed in this paper.
Original language | English |
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Pages (from-to) | 449-455 |
Number of pages | 7 |
Journal | Fuel Cells |
Volume | 15 |
Issue number | 3 |
Early online date | 20 Apr 2015 |
DOIs | |
Publication status | Published - 1 Jun 2015 |
Keywords
- Carbon Powder
- Electrocatalyst Layer
- Matrix
- Proton Exchange Membrane Fuel Cell
- Pt Nanowire
ASJC Scopus subject areas
- Renewable Energy, Sustainability and the Environment
- Energy Engineering and Power Technology
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Dive into the research topics of 'Matrix Material Study for in situ Grown Pt Nanowire Electrocatalyst Layer in Proton Exchange Membrane Fuel Cells (PEMFCs)'. Together they form a unique fingerprint.Prizes
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Science City Research Alliance Fellowship
Du, Shangfeng (Recipient), 2009
Prize: Fellowship awarded competitively
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