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

28 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

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Graphite
fuel cell
theoretical study
Graphene
Fuel cells
Nitrogen
experimental study
nitrogen
Nanoparticles
Structural integrity
Catalyst supports
Discrete Fourier transforms
Methanol
Dissolution
Thermodynamics
Oxygen
Oxidation
methanol
thermodynamics
catalyst

All Science Journal Classification (ASJC) codes

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

Cite this

Seo, Min Ho ; Choi, Sung Mook ; Lim, Eun Ja ; Kwon, In Hye ; Seo, Joon Kyo ; Noh, Seung Hyo ; Kim, Won Bae ; Han, Byungchan. / Toward New Fuel Cell Support Materials : A Theoretical and Experimental Study of Nitrogen-Doped Graphene. In: ChemSusChem. 2014 ; Vol. 7, No. 9. pp. 2609-2620.
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Toward New Fuel Cell Support Materials : A Theoretical and Experimental Study of Nitrogen-Doped Graphene. / Seo, Min Ho; Choi, Sung Mook; Lim, Eun Ja; Kwon, In Hye; Seo, Joon Kyo; Noh, Seung Hyo; Kim, Won Bae; Han, Byungchan.

In: ChemSusChem, Vol. 7, No. 9, 01.01.2014, p. 2609-2620.

Research output: Contribution to journalArticle

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AU - Seo, Min Ho

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AU - Seo, Joon Kyo

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