Toward New Fuel Cell Support Materials: A Theoretical and Experimental Study of Nitrogen‐Doped Graphene. Issue 9 (10th July 2014)

• Record Type: Journal Article
• Authors: Seo, Min Ho; Choi, Sung Mook; Lim, Eun Ja; Kwon, In Hye; Seo, Joon Kyo; Noh, Seung Hyo; Kim, Won Bae; Han, Byungchan
• Is Part Of: ChemSusChem. Volume 7:Issue 9(2014:Sep.)
• Page Start: 2609
• Page End: 2620
• Publication Date: 2014-07-10
• Subjects: Green chemistry -- Periodicals; Sustainable engineering -- Periodicals; Chemistry -- Periodicals; Chemical engineering -- Periodicals; 660
• DOI: 10.1002/cssc.201402258
• Languages: English
• ISSNs: 1864-5631

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>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.</p> </abstract>