Post-synthetic Modification of Covalent Organic Frameworks through in situ Polymerization of Aniline for Enhanced Capacitive Energy Storage

被引：42
作者：
Dutta, Tapas Kumar [1 ]
Patra, Abhijit [1 ]
机构：
[1] Indian Inst Sci Educ & Res Bhopal, Dept Chem, Bhopal Bypass Rd, Bhopal 462066, Madhya Pradesh, India
来源：
CHEMISTRY-AN ASIAN JOURNAL | 2021年 / 16卷 / 02期
关键词：
Triazine frameworks; Covalent organic framework nanocomposites; Polyaniline; Energy storage; Asymmetric supercapacitor; HIGH-PERFORMANCE; POWER-DENSITY; CARBON; COMPOSITES; ELECTRODE; CO2; NANOSHEETS; NETWORKS; SURFACE; HYBRID;
D O I：
10.1002/asia.202001216
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Covalent organic frameworks (COFs) having layered architecture with open nanochannels and high specific surface area are promising candidates for energy storage. However, the low electrical conductivity of two-dimensional COFs often limits their scope in energy storage applications. The conductivity of COFs can be enhanced through post-synthetic modification with conducting polymers. Herein, we developed polyaniline (PANI) modified triazine-based COFs via in situ polymerization of aniline within the porous frameworks. The composite materials showed high conductivity of 1.4-1.9x10(-2) S cm(-1) at room temperature with a 20-fold enhancement of the specific capacitance than the pristine frameworks. The fabricated supercapacitor exhibited a high energy density of 24.4 W h kg(-1) and a power density of 200 W kg(-1) at 0.5 A g(-1) current density. Moreover, the device fabricated using the conducting polymer-triazine COF composite could light up a green light-emitting diode for 1 min after being charged for 10 s.
引用
收藏
页码：158 / 164
页数：7
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