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

Title
Development of highly active and stable non-precious oxygen reduction catalysts for PEM fuel cells using polypyrrole and a chelating agent
Authors
오형석오종길노범욱황인철김한성
Keywords
Non-precious catalysts; Polypyrrole; Chelate; Ethylenediamine; Oxygen reduction reaction; PEM fuel cell
Issue Date
2011-08
Publisher
Electrochemistry communications
Citation
VOL 13, NO 8-881
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.
URI
http://pubs.kist.re.kr/handle/201004/67021
ISSN
1388-2481
Appears in Collections:
KIST Publication > Article
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