期刊
ADVANCED FUNCTIONAL MATERIALS
卷 28, 期 51, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adfm.201805641
关键词
Co2P; Co-N; flexible Zn-air batteries; N-doped carbon nanotubes; trifunctional electrocatalysts
类别
资金
- National Natural Science Foundation of China [2187051489, 21571157, U1604123]
- Outstanding Young Talent Research Fund of Zhengzhou University [1521320001]
- Young Outstanding Teachers of University in Henan Province [2016-130]
- Creative talents in the Education Department of Henan [19HASTIT039]
- Open Project Foundation of Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education) [2017-29]
- Nankai University
- Open Project Foundation of State Key Laboratory of Inorganic Synthesis and Preparation of Jilin University
Developing active, robust, and nonprecious electrocatalysts for the hydrogen evolution reaction (HER), oxygen evolution reaction (OER), and oxygen reduction reaction (ORR) is highly crucial and challenging. In this work, a facile strategy is developed for scalable fabrication of dicobalt phosphide (Co2P)-cobalt nitride (CoN) core-shell nanoparticles with double active sites encapsulated in nitrogen-doped carbon nanotubes (Co2P/CoN-in-NCNTs) by straight forward pyrolysis method. Both density functional theory calculation and experimental results reveal that pyrrole nitrogen coupled with Co2P is the most active one for HER, while Co-N-C active sites existing on the interfaces between CoN and N-doped carbon shells are responsible for the ORR and OER activity in this catalyst. Furthermore, liquid-state and all-solid-state Zn-air batteries are equipped. Co2P/CoN-in-NCNTs show high power density as high as 194.6 mW cm(-2), high gravimetric energy density of 844.5 W h kg(-1), very low charge-discharge polarization, and excellent reversibility of 96 h at 5 mA cm(-2) in liquid system. Moreover, the Co2P/CoN-in-NCNTs profiles confirm excellent activity for water splitting.
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