Toward New Fuel Cell Support Materials: A Theoretical and Experimental Study of Nitrogen-doped Graphene
SCIE
SCOPUS
- Title
- Toward New Fuel Cell Support Materials: A Theoretical and Experimental Study of Nitrogen-doped Graphene
- Authors
- Min Ho Seo; Sung Mook Choi; Eun Ja Lim; In Hye Kwon; Joon Kyo Seo; Seung Hyo Noh; Kim, WB; Byungchan Han
- Date Issued
- 2014-09
- Publisher
- Wiley
- 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 (NGNS) 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.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/37767
- DOI
- 10.1002/CSSC.201402258
- ISSN
- 1864-5631
- Article Type
- Article
- Citation
- ChemSusChem, vol. 7, no. 9, page. 2609 - 2620, 2014-09
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- There are no files associated with this item.
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