Iron-embedded porous carbon nanofibers as Pt electrocatalyst supports for direct methanol fuel cells

Dong Yo Shin; Geon Hyoung An; Hyo Jin Ahn

doi:10.1166/jnn.2017.15087

Iron-embedded porous carbon nanofibers as Pt electrocatalyst supports for direct methanol fuel cells

Dong Yo Shin, Geon Hyoung An, Hyo Jin Ahn

Department of Energy and Materials Engineering

Seoul National University of Science and Technology (SNUST)

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

Pt electrocatalysts well-dispersed on iron (Fe)-embedded porous carbon nanofiber (CNF) supports were synthesized using electrospinning and a reduction method for improved methanol electro-oxidation. 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/mg_Pt 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.

Original language	English
Pages (from-to)	8180-8185
Number of pages	6
Journal	Journal of Nanoscience and Nanotechnology
Volume	17
Issue number	11
DOIs	https://doi.org/10.1166/jnn.2017.15087
State	Published - 2017

Keywords

Electrospinning
Iron Nanoparticles
Methanol Electro-Oxidation
Platinum Electrocatalysts
Porous Carbon Nanofibers

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title = "Iron-embedded porous carbon nanofibers as Pt electrocatalyst supports for direct methanol fuel cells",

abstract = "Pt electrocatalysts well-dispersed on iron (Fe)-embedded porous carbon nanofiber (CNF) supports were synthesized using electrospinning and a reduction method for improved methanol electro-oxidation. 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.",

keywords = "Electrospinning, Iron Nanoparticles, Methanol Electro-Oxidation, Platinum Electrocatalysts, Porous Carbon Nanofibers",

author = "Shin, {Dong Yo} and An, {Geon Hyoung} and Ahn, {Hyo Jin}",

year = "2017",

doi = "10.1166/jnn.2017.15087",

language = "English",

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journal = "Journal of Nanoscience and Nanotechnology",

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AU - Shin, Dong Yo

AU - An, Geon Hyoung

AU - Ahn, Hyo Jin

PY - 2017

Y1 - 2017

N2 - Pt electrocatalysts well-dispersed on iron (Fe)-embedded porous carbon nanofiber (CNF) supports were synthesized using electrospinning and a reduction method for improved methanol electro-oxidation. 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.

AB - Pt electrocatalysts well-dispersed on iron (Fe)-embedded porous carbon nanofiber (CNF) supports were synthesized using electrospinning and a reduction method for improved methanol electro-oxidation. 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.

KW - Electrospinning

KW - Iron Nanoparticles

KW - Methanol Electro-Oxidation

KW - Platinum Electrocatalysts

KW - Porous Carbon Nanofibers

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JO - Journal of Nanoscience and Nanotechnology

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IS - 11

ER -

Iron-embedded porous carbon nanofibers as Pt electrocatalyst supports for direct methanol fuel cells

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Keywords

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