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Iron-Embedded Porous Carbon Nanofibers as Pt Electrocatalyst Supports for Direct Methanol Fuel Cells

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Pt electrocatalysts well-dispersed on iron (Fe)-embedded porous carbon nanofiber (CNF) supports were synthesized using electrospinning and a reduction method for improved methanol electrooxidation. To study the effects of the amount of Fe embedded in the porous CNF supports, we used three different amounts of Fe precursor: 4 wt% (sample A), 8 wt% (sample B), and 12 wt% (sample C). Among them, sample B exhibited the highest anodic current density of 619.0 mA/mgPt and excellent electrocatalytic stability compared to commercial Pt/C and Pt/CNFs. The enhanced methanol electro-oxidation performance can be explained by the combined effects of increased active area between the Pt electrocatalysts and the electrolyte due to well-dispersed Pt electrocatalysts on porous CNF supports, and the improved electrical conductivity of the supports due to the efficient electron transfer by Fe nanoparticles embedded within porous CNFs.
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Keywords: Electrospinning; Iron Nanoparticles; Methanol Electro-Oxidation; Platinum Electrocatalysts; Porous Carbon Nanofibers

Document Type: Research Article

Affiliations: Department of Materials Science and Engineering, Seoul National University of Science and Technology, Seoul 139-743, South Korea

Publication date: 01 November 2017

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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