Toward New Fuel Cell Support Materials: A Theoretical and Experimental Study of Nitrogen-Doped Graphene

Min Ho Seo, Sung Mook Choi, Eun Ja Lim, In Hye Kwon, Joon Kyo Seo, Seung Hyo Noh, Won Bae Kim, Byungchan Han

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

Nano-scale Pt particles are often reported to be more electrochemically active and stable in a fuel cell if properly displaced on support materials; however, the factors that affect their activity and stability are not well understood. We applied first-principles calculations and experimental measurements to well-defined model systems of N-doped graphene supports (N-GNS) to reveal the fundamental mechanisms that control the catalytic properties and structural integrity of nano-scale Pt particles. DFT calculations predict thermodynamic and electrochemical interactions between N-GNS and Pt nanoparticles in the methanol oxidation reaction (MOR) and oxygen reduction reaction (ORR). Moreover, the dissolution potentials of the Pt nanoparticles supported on GNS and N-GNS catalysts are calculated under acidic conditions. Our results provide insight into the design of new support materials for enhanced catalytic efficiency and long-term stability.

Original languageEnglish
Pages (from-to)2609-2620
Number of pages12
JournalChemSusChem
Volume7
Issue number9
DOIs
Publication statusPublished - 2014 Jan 1

    Fingerprint

All Science Journal Classification (ASJC) codes

  • Environmental Chemistry
  • Chemical Engineering(all)
  • Materials Science(all)
  • Energy(all)

Cite this

Seo, M. H., Choi, S. M., Lim, E. J., Kwon, I. H., Seo, J. K., Noh, S. H., Kim, W. B., & Han, B. (2014). Toward New Fuel Cell Support Materials: A Theoretical and Experimental Study of Nitrogen-Doped Graphene. ChemSusChem, 7(9), 2609-2620. https://doi.org/10.1002/cssc.201402258