Development of highly active and stable non-precious oxygen reduction catalysts for PEM fuel cells using polypyrrole and a chelating agent

Hyung Suk Oh, Jong Gil Oh, Bumwook Roh, Inchul Hwang, Hansung Kim

Research output: Contribution to journalArticle

72 Citations (Scopus)

Abstract

Nitrogen-modified carbon nanofibers to be used as catalysts in the oxygen reduction reaction (ORR) were synthesized by pyrolysis in the presence of cobalt with PPy and a chelating agent, such as ethylenediamine (ED). It has been found that the type of nitrogen source has a remarkable impact on the catalytic activity and stability of ORR catalysts. XPS and elemental analysis indicated that the combination of ED and PPy as nitrogen sources provided a synergistic effect toward increasing the total nitrogen content of the catalysts and the content of useful nitrogen functional groups such as pyridinic-N and graphitic-N that are responsible for high ORR activity and stability in acidic environments.

Original languageEnglish
Pages (from-to)879-881
Number of pages3
JournalElectrochemistry Communications
Volume13
Issue number8
DOIs
Publication statusPublished - 2011 Aug 1

Fingerprint

Polypyrroles
Chelating Agents
Chelation
ethylenediamine
Fuel cells
Nitrogen
Oxygen
Catalysts
Carbon nanofibers
Cobalt
Functional groups
Catalyst activity
Pyrolysis
X ray photoelectron spectroscopy
polypyrrole
Chemical analysis

All Science Journal Classification (ASJC) codes

  • Electrochemistry

Cite this

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abstract = "Nitrogen-modified carbon nanofibers to be used as catalysts in the oxygen reduction reaction (ORR) were synthesized by pyrolysis in the presence of cobalt with PPy and a chelating agent, such as ethylenediamine (ED). It has been found that the type of nitrogen source has a remarkable impact on the catalytic activity and stability of ORR catalysts. XPS and elemental analysis indicated that the combination of ED and PPy as nitrogen sources provided a synergistic effect toward increasing the total nitrogen content of the catalysts and the content of useful nitrogen functional groups such as pyridinic-N and graphitic-N that are responsible for high ORR activity and stability in acidic environments.",
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Development of highly active and stable non-precious oxygen reduction catalysts for PEM fuel cells using polypyrrole and a chelating agent. / Oh, Hyung Suk; Oh, Jong Gil; Roh, Bumwook; Hwang, Inchul; Kim, Hansung.

In: Electrochemistry Communications, Vol. 13, No. 8, 01.08.2011, p. 879-881.

Research output: Contribution to journalArticle

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