期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 57, 期 50, 页码 16511-16515出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201811573
关键词
alkaline and acidic; electrocatalysis; nitrogen-doped holey carbon; oxygen evolution reaction (OER); oxygen reduction reaction (ORR)
资金
- National Natural Science Foundation of China [51432009]
Efficient nonprecious-metal oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) electro-catalysts are key for the commercial viability of fuel cells, metal-air batteries, and water-splitting systems. Thus, high-performance ORR and OER electrocatalysts in acidic electrolytes are needed to support high-efficiency proton exchange membrane (PEM)-based systems. Herein, we report a new approach to design and prepare an ultrathin N-doped holey carbon layer (HCL) on a graphene sheet that exhibits outstanding bifunctional ORR/OER activities in both alkaline and acidic media. The edge sites of HCL are utilized to achieve selective doping of highly active pyridinic-N. The sandwiched graphene sheet provides mechanical support, stabilizes HCL structure and promotes charge transfer. The synergetic effect of the catalyst structure overcomes the drawbacks of holey graphene approaches. The resulting ORR and OER performances are equal to or better than the top-ranked electrocatalysts.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据