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The Exfoliation of Crystalline Covalent Triazine Frameworks by Glycerol Intercalation
Author(s) -
Liu Jing,
Liu Manying,
Wang Xueqing,
Wang Kewei,
Jin Shangbin,
Tan Bien
Publication year - 2021
Publication title -
advanced materials interfaces
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.671
H-Index - 65
ISSN - 2196-7350
DOI - 10.1002/admi.202100374
Subject(s) - materials science , intercalation (chemistry) , exfoliation joint , crystallinity , triazine , covalent bond , electrode , chemical engineering , crystallography , graphene , nanotechnology , composite material , chemistry , polymer chemistry , organic chemistry , engineering
It is a huge challenge to exfoliate covalent triazine frameworks (CTFs) into large‐area CTF sheets, because of the ultrastrong triazine linkage and its high crystallinity. Herein, a glycerol intercalation strategy is reported to exfoliate bulk crystalline CTF‐HC1 into large‐area crystalline E‐CTF‐HC1 sheets. The three vibration states of glycerol molecules at 25, 90, and 300 °C are a key role in the process of CTFs exfoliation. As the temperature increases, the vibration energy increases. When the temperature reaches 300 °C, the vibration energy becomes large enough to make the glycerol occupy the CTF layer spacing at the vibrational state of the maximum cross section, resulting in the exfoliation of CTFs. The specific capacitance of the exfoliated E‐CTF‐HC1 electrode (342.15 F g −1 at 0.1 A g −1 ) is about 3.3 times higher than that of bulk CTF‐HC1 electrode (104.04 F g −1 at 0.1 A g −1 ).