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摘要：
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.
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来源 ：
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
ISSN： 1433-7851
年份： 2014
期： 51
卷： 53
页码： 14235-14239
1 6 . 6 0 0
JCR@2022
ESI学科： CHEMISTRY;
ESI高被引阀值：258
JCR分区：1
中科院分区：1
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