Electrochemical catalytic activity for oxygen reduction reaction of nitrogen-doped carbon nanofibers

Jiyoung Kim, Seongyop Lim, Sang Kyung Kim, Dong Hyun Peck, Byungrok Lee, Seong Ho Yoon, Doohwan Jung

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

The electrocatalytic activity of nitrogen-doped carbon nanofibers (N-CNFs), which are synthesized directly from vaporized acetonitrile over nickel-iron based catalysts, for oxygen reduction reaction (ORR), was investigated. The nitrogen content and specific surface area of N-CNFs can be controlled through the synthesis temperature (300 vie 680 °C). The graphitization degree of N-CNFs also are significantly affected by the temperature, whereas the chemical compositions of nitrogen species are similar irrespective of the synthesis conditions. From measurement of the electrochemical double layer capacitance, the surface of N-CNFs is found to have stronger interaction with ions than undoped-carbon surfaces. Although N-CNFs show higher over-potential than Pt catalysts do, N-CNFs were observed to have a noticeable ORR activity, as opposed to the carbon samples without nitrogen doping. The activity dependency of N-CNFs on the content of the nitrogen with which they were doped is discussed, based on the experiment results. The single cell of the direct methanol fuel cell (DMFC) was tested to investigate the performance of a membrane-electrode assembly that includes N-CNFs as the cathode catalyst layer.

Original languageEnglish
Pages (from-to)6350-6358
Number of pages9
JournalJournal of nanoscience and nanotechnology
Volume11
Issue number7
DOIs
Publication statusPublished - Jul 1 2011

Fingerprint

Nanofibers
Nitrogen
Carbon
Oxygen
Electrodes
Temperature
Nickel
Methanol

All Science Journal Classification (ASJC) codes

  • Bioengineering
  • Chemistry(all)
  • Biomedical Engineering
  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Electrochemical catalytic activity for oxygen reduction reaction of nitrogen-doped carbon nanofibers. / Kim, Jiyoung; Lim, Seongyop; Kim, Sang Kyung; Peck, Dong Hyun; Lee, Byungrok; Yoon, Seong Ho; Jung, Doohwan.

In: Journal of nanoscience and nanotechnology, Vol. 11, No. 7, 01.07.2011, p. 6350-6358.

Research output: Contribution to journalArticle

Kim, Jiyoung ; Lim, Seongyop ; Kim, Sang Kyung ; Peck, Dong Hyun ; Lee, Byungrok ; Yoon, Seong Ho ; Jung, Doohwan. / Electrochemical catalytic activity for oxygen reduction reaction of nitrogen-doped carbon nanofibers. In: Journal of nanoscience and nanotechnology. 2011 ; Vol. 11, No. 7. pp. 6350-6358.
@article{473993b5ce054f5ba4d148194fad6613,
title = "Electrochemical catalytic activity for oxygen reduction reaction of nitrogen-doped carbon nanofibers",
abstract = "The electrocatalytic activity of nitrogen-doped carbon nanofibers (N-CNFs), which are synthesized directly from vaporized acetonitrile over nickel-iron based catalysts, for oxygen reduction reaction (ORR), was investigated. The nitrogen content and specific surface area of N-CNFs can be controlled through the synthesis temperature (300 vie 680 °C). The graphitization degree of N-CNFs also are significantly affected by the temperature, whereas the chemical compositions of nitrogen species are similar irrespective of the synthesis conditions. From measurement of the electrochemical double layer capacitance, the surface of N-CNFs is found to have stronger interaction with ions than undoped-carbon surfaces. Although N-CNFs show higher over-potential than Pt catalysts do, N-CNFs were observed to have a noticeable ORR activity, as opposed to the carbon samples without nitrogen doping. The activity dependency of N-CNFs on the content of the nitrogen with which they were doped is discussed, based on the experiment results. The single cell of the direct methanol fuel cell (DMFC) was tested to investigate the performance of a membrane-electrode assembly that includes N-CNFs as the cathode catalyst layer.",
author = "Jiyoung Kim and Seongyop Lim and Kim, {Sang Kyung} and Peck, {Dong Hyun} and Byungrok Lee and Yoon, {Seong Ho} and Doohwan Jung",
year = "2011",
month = "7",
day = "1",
doi = "10.1166/jnn.2011.4443",
language = "English",
volume = "11",
pages = "6350--6358",
journal = "Journal of Nanoscience and Nanotechnology",
issn = "1533-4880",
publisher = "American Scientific Publishers",
number = "7",

}

TY - JOUR

T1 - Electrochemical catalytic activity for oxygen reduction reaction of nitrogen-doped carbon nanofibers

AU - Kim, Jiyoung

AU - Lim, Seongyop

AU - Kim, Sang Kyung

AU - Peck, Dong Hyun

AU - Lee, Byungrok

AU - Yoon, Seong Ho

AU - Jung, Doohwan

PY - 2011/7/1

Y1 - 2011/7/1

N2 - The electrocatalytic activity of nitrogen-doped carbon nanofibers (N-CNFs), which are synthesized directly from vaporized acetonitrile over nickel-iron based catalysts, for oxygen reduction reaction (ORR), was investigated. The nitrogen content and specific surface area of N-CNFs can be controlled through the synthesis temperature (300 vie 680 °C). The graphitization degree of N-CNFs also are significantly affected by the temperature, whereas the chemical compositions of nitrogen species are similar irrespective of the synthesis conditions. From measurement of the electrochemical double layer capacitance, the surface of N-CNFs is found to have stronger interaction with ions than undoped-carbon surfaces. Although N-CNFs show higher over-potential than Pt catalysts do, N-CNFs were observed to have a noticeable ORR activity, as opposed to the carbon samples without nitrogen doping. The activity dependency of N-CNFs on the content of the nitrogen with which they were doped is discussed, based on the experiment results. The single cell of the direct methanol fuel cell (DMFC) was tested to investigate the performance of a membrane-electrode assembly that includes N-CNFs as the cathode catalyst layer.

AB - The electrocatalytic activity of nitrogen-doped carbon nanofibers (N-CNFs), which are synthesized directly from vaporized acetonitrile over nickel-iron based catalysts, for oxygen reduction reaction (ORR), was investigated. The nitrogen content and specific surface area of N-CNFs can be controlled through the synthesis temperature (300 vie 680 °C). The graphitization degree of N-CNFs also are significantly affected by the temperature, whereas the chemical compositions of nitrogen species are similar irrespective of the synthesis conditions. From measurement of the electrochemical double layer capacitance, the surface of N-CNFs is found to have stronger interaction with ions than undoped-carbon surfaces. Although N-CNFs show higher over-potential than Pt catalysts do, N-CNFs were observed to have a noticeable ORR activity, as opposed to the carbon samples without nitrogen doping. The activity dependency of N-CNFs on the content of the nitrogen with which they were doped is discussed, based on the experiment results. The single cell of the direct methanol fuel cell (DMFC) was tested to investigate the performance of a membrane-electrode assembly that includes N-CNFs as the cathode catalyst layer.

UR - http://www.scopus.com/inward/record.url?scp=84863011926&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84863011926&partnerID=8YFLogxK

U2 - 10.1166/jnn.2011.4443

DO - 10.1166/jnn.2011.4443

M3 - Article

C2 - 22121714

AN - SCOPUS:84863011926

VL - 11

SP - 6350

EP - 6358

JO - Journal of Nanoscience and Nanotechnology

JF - Journal of Nanoscience and Nanotechnology

SN - 1533-4880

IS - 7

ER -