期刊
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
卷 6, 期 3, 页码 3556-3564出版社
AMER CHEMICAL SOC
DOI: 10.1021/acssuschemeng.7b03888
关键词
Transition metal/spinel oxide; N-Doped carbon layer; Polydopamine; Oxygen reduction reaction; Oxygen evolution reaction
资金
- National Natural Science Foundation of China [21273173]
- Natural Science Foundation Project of CQ CSTC [cstc2016jcyjA0493]
- Fundamental Research Funds for the Central Universities [XDJK201SB014]
- Chongqing Key Laboratory for Advanced Materials and Technologies of Clean Energies
We herein report a facile strategy to synthesize transition metal/spinel oxide nanoparticles coupled with nitrogen-doped graphene (Co/CoFe2O4@N-graphene) as an efficient bifunctional electrocatalyst toward the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER). This approach involves a spontaneous solution polymerization of polydopamine (PDA) film on graphene oxide (GO) sheets in the presence of Fe3+ and Co2+ to form the Fe/Co-PDA-GO precursor, followed by pyrolysis at 800 degrees C in argon (Ar) atmosphere. During the calcination process, Co/CoFe2O4 nanoparticles are in situ formed via high-temperature solid state reaction and are further entrapped by the PDA-derived N-doped carbon layer. As-prepared Co/CoFe2O4@N-graphene exhibits highly efficient catalytic activity and excellent stability for both ORR and OER in alkaline solution. This work reports a facile synthetic approach to develop highly active electrocatalysts while offering great flexibility to tailor their components and morphologies and thus provides a useful route to the design and synthesis of a broad variety of 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