Modified graphene as electrocatalyst towards oxygen reduction reaction for fuel cells
Abstract: This paper reports modified graphene-based materials as metal-free electrocatalysts for oxygen reduction reaction (ORR) with outstanding electrocatalytic activity in alkaline conditions. Nitrogen-doped graphene samples are synthesized by a novel procedure. The defect density in the structure of the prepared materials is investigated by Raman spectroscopy.
Further structural characterization by X-ray photoelectron spectroscopy reveals the successful nitrogen doping of graphene. The electrochemical characterization of graphene and nitrogen-doped graphene in 0.1 M KOH solution demonstrates the material’s electrocatalytic activity towards ORR. For graphene an onset potential of - 0.175 V vs. Ag/AgCl reference electrode is determined, while for nitrogen-doped graphene the determined onset potential is - 0.160 V. Thus, the electrocatalytic activity of nitrogen-doped graphene towards ORR is enhanced which can be ascribed to the effect of nitrogen doping
- Standort
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Deutsche Nationalbibliothek Frankfurt am Main
- Umfang
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Online-Ressource
- Sprache
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Englisch
- Anmerkungen
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Journal of physics. Conference series. 557 (2014), article no. 012009, DOI 10.1088/1742-6596/557/1/012009, issn: 1742-6588
- Klassifikation
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Ingenieurwissenschaften und Maschinenbau
- Schlagwort
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Graphen
Elektrokatalyse
Brennstoffzelle
- Ereignis
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Veröffentlichung
- (wo)
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Freiburg
- (wer)
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Universität
- (wann)
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2018
- DOI
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10.1088/1742-6596/557/1/012009
- URN
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urn:nbn:de:bsz:25-freidok-144419
- Rechteinformation
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Kein Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
- Letzte Aktualisierung
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25.03.2025, 13:50 MEZ
Datenpartner
Deutsche Nationalbibliothek. Bei Fragen zum Objekt wenden Sie sich bitte an den Datenpartner.
Beteiligte
- Qazzazie, Dureid
- Beckert, Michaela
- Mülhaupt, Rolf
- Yurchenko, Olena
- Urban, Gerald A.
- Freiburger Material-Forschungszentrum
- Albert-Ludwigs-Universität Freiburg. Institut für Mikrosystemtechnik
- Albert-Ludwigs-Universität Freiburg. Institut für Makromolekulare Chemie
- Albert-Ludwigs-Universität Freiburg
- Universität
Entstanden
- 2018