JOURNAL ARTICLE

MOF‐derived nitrogen‐doped iron–nickel oxide carbon nanotubes as efficient oxygen electrocatalyst for long‐life rechargeable zinc–air batteries

Abstract

摘要 具有高活性的电催化剂对于高能量密度的锌‐空气电池至关重要。然而,电催化剂中析氧反应(OER)和氧还原反应(ORR)的缓慢动力学阻碍了锌‐空气电池的发展。本文报道了一类通过简单热解策略制备的MOF衍生氮掺杂双金属氧化物封装的碳纳米管材料(FeNiO@NCNT)。FeNiO@NCNT对OER和ORR都表现出高催化活性。特别是,FeNiO@NCNT中的晶格氧和OH ‐ 为OER提供了更多的活性位点(金属活性位点除外),使FeNiO@NCNT具有相比其他催化剂更优异的OER性能(E j=10 = 205 mV)。作为OER和ORR双功能催化剂,基于FeNiO@NCNT的可充电锌空气电池表现出124.29 mW·cm −2 的高放电功率密度,以及低的充放电极化和在20 mA·cm −2 下440 h的优异循环稳定性。这项工作表明FeNiO@NCNT可作为在各种集成能源系统中实际应用的有前途的潜在催化剂。

Keywords:
Electrocatalyst Materials science Zinc Carbon nanotube Nickel Carbon fibers Oxygen evolution Nitrogen Oxygen Nickel oxide Inorganic chemistry Nanotechnology Metallurgy Electrochemistry Electrode Chemistry Organic chemistry Composite number Composite material

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Citation History

Topics

Electrocatalysts for Energy Conversion
Physical Sciences →  Energy →  Renewable Energy, Sustainability and the Environment
Advanced battery technologies research
Physical Sciences →  Engineering →  Electrical and Electronic Engineering
Supercapacitor Materials and Fabrication
Physical Sciences →  Materials Science →  Electronic, Optical and Magnetic Materials
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