期刊
ADVANCED MATERIALS
卷 31, 期 19, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.201900843
关键词
free-standing; heteroatom doping; nanoporous graphene; single-atom catalysts
类别
资金
- National Natural Science Foundation of China [51702031, 61704096, 11704245]
- JST-PRESTO Creation of Innovative Core Technology for Manufacture and Use of Energy Carriers from Renewable Energy [JPMJPR1541]
- JSPS [JP18H04477]
- JSPS KAKENHI [JP18K14174]
- University of Tsukuba Basic Research Support Program Type S, University of Tsukuba
- Japanese government (MONBUKAGAKUSHO: MEXT) scholarship
- Sasakawa Scientific Research Grant from the Japan Science Society
- Shanghai Pujiang Program [17PJ1403700]
- Shanghai Eastern Scholar Program
- Medicine-Engineering Cross Research Foundation of Shanghai Jiao Tong University [YG2016MS53]
Developing bifunctional electrocatalysts with high activities and long durability for the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) is crucial toward the practical implementation of rechargeable metal-air batteries. Here, a 3D nanoporous graphene (np-graphene) doped with both N and Ni single atoms/clusters is reported. The predoping of N by chemical vapor deposition (CVD) dramatically increases the Ni doping amount and stability. The resulting N and Ni codoped np-graphene has excellent electrocatalytic activities for both the ORR and the OER in alkaline aqueous solutions. The synergetic effects of N and Ni dopants are revealed by density functional theory calculations. The free-standing Ni, N codoped 3D np-graphene shows great potential as an economical catalyst/electrode for metal-air batteries.
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