ZIF-8 Derived Graphene-Based Nitrogen-Doped Porous Carbon Sheets as Highly Efficient and Durable Oxygen Reduction Electrocatalysts

• Published in: Angewandte Chemie International Edition Vol. 53; no. 51; pp. 14235 - 14239
• Main Authors: Zhong, Hai-xia, Wang, Jun, Zhang, Yu-wei, Xu, Wei-lin, Xing, Wei, Xu, Dan, Zhang, Yue-fei, Zhang, Xin-bo
• Format: Journal Article
• Language: English
• Published: Weinheim WILEY-VCH Verlag 15.12.2014; WILEY‐VCH Verlag; Wiley Subscription Services, Inc
• Edition: International ed. in English
• Subjects: Carbon; Catalysis; Catalysts; Durability; Electrocatalysts; Graphene; Methyl alcohol; Nitrogen; nitrogen doping; Oxygen; oxygen reduction reaction; porous carbon sheets; Reduction; Tolerances; electrocatalysts; porous carbon sheets; oxygen reduction reaction; nitrogen doping
• ISSN: 1433-7851; 1521-3773
• DOI: 10.1002/anie.201408990

Nitrogen‐doped carbon (NC) materials have been proposed as next‐generation oxygen reduction reaction (ORR) catalysts to significantly improve scalability and reduce costs, but these alternatives usually exhibit low activity and/or gradual deactivation during use. Here, we develop new 2D sandwich‐like zeolitic imidazolate framework (ZIF) derived graphene‐based nitrogen‐doped porous carbon sheets (GNPCSs) obtained by in situ growing ZIF on graphene oxide (GO). Compared to commercial Pt/C catalyst, the GNPCSs show comparable onset potential, higher current density, and especially an excellent tolerance to methanol and superior durability in the ORR. Those properties might be attributed to a synergistic effect between NC and graphene with regard to structure and composition. Furthermore, higher open‐circuit voltage and power density are obtained in direct methanol fuel cells. Nitrogen‐doped: A new oxygen reduction reaction electrocatalyst was obtained from ZIF‐derived porous carbon and graphene. The catalyst exhibits high activity, superior tolerance to methanol, and good stability in comparison to commercial Pt/C catalyst.