Spontaneous Weaving of Graphitic Carbon Networks Synthesized by Pyrolysis of ZIF‐67 Crystals

Three‐dimensional (3D) networks of graphitic carbon are promising materials for energy storage and conversion devices because of their high electrical conductivity, which is promoted by the good interconnection between the carbon particles. However, it is still difficult to directly synthesize such...

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Bibliographic Details
Published in:Angewandte Chemie International Edition 2017-07, Vol.56 (29), p.8435-8440
Main Authors: Zhang, Wei, Jiang, Xiangfen, Wang, Xuebin, Kaneti, Yusuf Valentino, Chen, Yinxiang, Liu, Jian, Jiang, Ji‐Sen, Yamauchi, Yusuke, Hu, Ming
Format: Article
Language:English
Subjects:
Carbon
Catalysis
Crystals
Direct power generation
Downsizing
EGR-1 protein
Electrical conductivity
Electrical resistivity
Electrochemical analysis
Electrochemistry
Energy storage
Insertion
Ions
metal-organic frameworks
Nanoparticles
Networks
Potassium
potassium-ion batteries
Pyrolysis
Synthesis
Weaving
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Summary:Three‐dimensional (3D) networks of graphitic carbon are promising materials for energy storage and conversion devices because of their high electrical conductivity, which is promoted by the good interconnection between the carbon particles. However, it is still difficult to directly synthesize such carbon networks. Herein, we report the novel synthesis of 3D graphitic carbon networks through the pyrolysis of nanosized ZIF‐67 crystals. Interestingly, the unusual effect of downsizing the ZIF‐67 crystals and the incorporation of catalytic Co nanoparticles was the spontaneous formation of graphitic networks. The obtained graphitic carbon networks show excellent electrochemical performance for the insertion and extraction of potassium ions. Networking skills: A facile method has been developed to synthesize continuous 3D carbon networks by pyrolysis of nanosized metal‐organic frameworks (MOFs). The synthesized continuous 3D carbon networks show excellent electrochemical performance for potassium‐ion batteries, with long cycling stability and good capacity retention at high rates.
ISSN:1433-7851
1521-3773
DOI:10.1002/anie.201701252