Pt-Ni alloy nanoparticles supported on CNF as catalyst for direct ethanol fuel cells

Title
Pt-Ni alloy nanoparticles supported on CNF as catalyst for direct ethanol fuel cells
Author(s)
김기현데바라즈사운다라잔J.H.Park[J.H.Park]J.M.Ko[J.M.Ko]
Keywords
OXYGEN REDUCTION; GRAPHITE NANOFIBERS; METHANOL OXIDATION; CARBON NANOTUBES; PERFORMANCE; ELECTRODES; CO; ELECTROCATALYSTS; ENHANCEMENT
Issue Date
201205
Publisher
ELSEVIER SCIENCE BV
Citation
CURRENT APPLIED PHYSICS, v.12, no.3, pp.854 - 859
Abstract
Carbon nanofiber (CNF) network supported Pt and Pt-Ni alloy nano particle catalysts were prepared by electrochemical deposition at different deposition cycles. Structure, composition and surface morphology of the Pt/CNF and Pt-Ni/CNF were analyzed using X-ray diffraction, Energy dispersive X-ray spectroscopy and field emission scanning electron microscopy. Structural analysis by XRD revealed a face centered cubic crystal structure for Pt and its alloy. SEM images have shown that the Pt-Ni nanoparticles distributed evenly on the CNF network. The electrocatalytic activity of the Pt/CNF and Pt-Ni/CNF electrodes was verified using an electrochemical linear voltammetrty (ELV), cyclic voltammetry (ECV) and electrochemical impedance spectroscopy (EIS) in an alkaline solution containing 1 M C2H5OH + 1 M KOH. The results show increased catalytic activity with enhancement of the Pt-Ni alloy formation. (C) 2011 Elsevier B.V. All rights reserved.
URI
http://hdl.handle.net/YU.REPOSITORY/28301http://dx.doi.org/10.1016/j.cap.2011.11.020
ISSN
1567-1739
Appears in Collections:
이과대학 > 물리학과 > Articles
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