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Toward New Fuel Cell Support Materials: A Theoretical and Experimental Study of Nitrogen-Doped Graphene
- Toward New Fuel Cell Support Materials: A Theoretical and Experimental Study of Nitrogen-Doped Graphene
- Seo, MH[Seo, Min Ho]; Choi, SM[Choi, Sung Mook]; Lim, EJ[Lim, Eun Ja]; Kwon, IH[Kwon, In Hye]; Seo, JK[Seo, Joon Kyo]; Noh, SH[Noh, Seung Hyo]; Kim, WB[Kim, Won Bae]; Han, B[Han, Byungchan]
- DGIST Authors
- Seo, MH[Seo, Min Ho]; Kwon, IH[Kwon, In Hye]; Seo, JK[Seo, Joon Kyo]; Han, B[Han, Byungchan]
- Issue Date
- ChemSusChem, 7(9), 2609-2620
- Article Type
- Density Functional Calculations; Doping; Graphene; Platinum; Supported Catalysts
- 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. © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
- Wiley-VCH Verlag
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- Energy Systems EngineeringETC1. Journal Articles
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