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Conductive Microporous Covalent Triazine-Based Framework for High-Performance Electrochemical Capacitive Energy Storage
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Conductive Microporous Covalent Triazine-Based Framework for High-Performance Electrochemical Capacitive Energy Storage
Posted:2017-11-07 14:11    Column:2017
Y. Li,† S.H. Zheng,† X. Liu, P. Li, L. Sun, R. Yang, S. Wang, Z.-S. Wu,* X.H. Bao, W.-Q. Deng*
Angewandte Chemie International Edition, 2017, 56, Online.
DOI: 10.1002/ange.201711169 [PDF]

Nitrogen enriched porous nanocarbon, graphene and conductive polymers attracted increasing attention in the application of supercapacitors. However, the electrode material possessing large specific surface area (SSA) and high nitrogen doping concentration simultaneously, which is needed for excellent supercapacitors, has not been achieved thus far. Herein, we developed a class of tetracyanoquinodimethane-derived conductive microporous covalent triazine-based frameworks (marked as TCNQCTFs) with high nitrogen content (> 8%) and large SSA (> 3600 m2 g-1) at the same time. These CTFs exhibited excellent specific capacitances with the highest value exceeding 380 F g-1, considerable energy density of 42.8 Wh kg-1 and remarkable cycling stability without any capacitance degradation after 10000 cycles. This class of CTFs should hold a great potential as high performance electrode material for electrochemical energy storage system.

                                

Dalian Institute of Chemical Physics, CAS
457 Zhongshan Road Dalian, China 116023
E-mail: wuzs@dicp.ac.cn
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