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Nitrogen Doped Carbon Materials Derived from Gentiana scabra Bunge as High-performance Catalysts for Oxygen Reduction Reaction

Abstract

A strategy for rational design and synthesis of nitrogen doped carbon as efficient cathode catalysts for oxygen reduction reaction (ORR) is developed. The high performance catalyst is obtained directly from carbonization of a bicomponent mixture containing Gentiana scabra Bunge (nature provided biomass) and ammonium chloride (NH4Cl), which are easily available and inexpensive. Gentiana scabra Bunge functions as carbon source, while ammonium chloride acts as both nitrogen dopant and porogen. Furthermore, synergetically tailoring the feed ratio of NH4Cl/Gentiana scabra Bunge and carbonization temperature make chemical and physical properties of the as-prepared carbon controllable and thus achieve ORR-performance-oriented design and synthesis of nitrogen doped carbon. The synthesized porous carbon (specific surface area up to 1440 m2 g−1 and 14 wt% nitrogen content) is an ideal material in ORR that requires high specific surface area, easy accessibility to the active sites through the hierarchical porous system and excellent electrical conductivity. Therefore, the synthesized porous carbon shows high ORR activity with comparable performance of Pt/C catalyst in both acidic and alkaline solutions, allowing large scale production of carbon materials for practical application in fuel cells.

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Publication details

The article was received on 09 Apr 2017, accepted on 13 Jun 2017 and first published on 13 Jun 2017


Article type: Paper
DOI: 10.1039/C7NJ01178D
Citation: New J. Chem., 2017, Accepted Manuscript
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    Nitrogen Doped Carbon Materials Derived from Gentiana scabra Bunge as High-performance Catalysts for Oxygen Reduction Reaction

    C. Wang, W. D. Wu, Y. Wang, D. Xu and F. Yan, New J. Chem., 2017, Accepted Manuscript , DOI: 10.1039/C7NJ01178D

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