期刊
ENERGY TECHNOLOGY
卷 8, 期 3, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ente.201901263
关键词
carbon nanofibers; Fe-N; Fe-P; necklace; oxygen reduction reaction; Zn-air battery
资金
- Shanghai Municipal Natural Science Foundation [17ZR1432200]
- National Natural Science Foundation of China [21774095]
- Tongji University
- Young Thousand Talented Program
Optimized catalysts are attractive from the standpoint of energy storage and conversion. Herein, a pearl necklace fibrous carbon catalyst with Fe-N/Fe-P dual active sites (Fe-P/NHCF) is fabricated via carbonization-phosphidation of metal-organic framework (MOF)/polyacrylonitrile nanofibers. Benefiting from Fe-N/Fe-P doping-induced active sites, accompanied by particular hierarchical porous merit and a 1D necklace network to facilitate the oxygen reduction reaction (ORR), it exhibits a half-wave potential of 0.82 V in alkaline medium and outperforms commercial Pt/C in terms of stability in acid medium. Furthermore, a low voltage gap (1.04 V) is acquired in a liquid Zn-air battery with Fe-P/NHCF as the cathode. Meanwhile, the portable solid-state Zn-air battery displays an open circuit voltage of 1.32 V and a power density of 42 mW cm(-2). This strategy puts forward a protocol to develop tailored geometry with dual active sites for ORR in alkaline/acid media, which is expected to promote devices of practical significance.
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