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Conductive Microporous Covalent Triazine‐Based Framework for High‐Performance Electrochemical Capacitive Energy Storage
Author(s) -
Li Yajuan,
Zheng Shuanghao,
Liu Xue,
Li Pan,
Sun Lei,
Yang Ruixia,
Wang Sen,
Wu ZhongShuai,
Bao Xinhe,
Deng WeiQiao
Publication year - 2018
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201711169
Subject(s) - supercapacitor , materials science , capacitance , graphene , microporous material , energy storage , melamine , electrochemistry , electrode , triazine , nanotechnology , electrical conductor , covalent bond , chemical engineering , conductive polymer , polymer , polymer chemistry , chemistry , composite material , organic chemistry , power (physics) , physics , quantum mechanics , engineering
Nitrogen‐enriched porous nanocarbon, graphene, and conductive polymers attract increasing attention for application in supercapacitors. However, electrode materials with a large specific surface area (SSA) and a high nitrogen doping concentration, 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 (TCNQ‐CTFs) with both high nitrogen content (>8 %) and large SSA (>3600 m 2 g −1 ). 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 10 000 cycles. This class of CTFs should hold a great potential as high‐performance electrode material for electrochemical energy‐storage systems.