Pyrene-based covalent organic polymers with nano carbonaceous composites for efficient supercapacitive energy storage

Covalent organic polymers (COPs) show great potential as supercapacitor electrodes due to their tunable properties, stability, and high capacitance. In this work, we prepared a covalent organic polymer (Py-DSDA-COP) through a Schiff base reaction of the 1,3,6,8-tetrakis(4-formylphenyl)pyrene monomer...

Full description

Saved in:
Bibliographic Details
Published in:Journal of materials chemistry. A, Materials for energy and sustainability Materials for energy and sustainability, 2023-10, Vol.11 (42), p.22868-22883
Main Authors: Ejaz, Mohsin, Mohamed, Mohamed Gamal, Huang, Wei-Chun, Kuo, Shiao-Wei
Format: Article
Language:English
Subjects:
Buckminsterfullerene
Capacitance
Carbonaceous materials
Covalence
Electrochemical analysis
Electrochemistry
Energy storage
Fullerenes
Imines
Nanocomposites
Polymers
Porosity
Pyrene
Thermal stability
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Covalent organic polymers (COPs) show great potential as supercapacitor electrodes due to their tunable properties, stability, and high capacitance. In this work, we prepared a covalent organic polymer (Py-DSDA-COP) through a Schiff base reaction of the 1,3,6,8-tetrakis(4-formylphenyl)pyrene monomer (Py-Ph-CHO) and 4,4′-disulfanediyldianiline (DSDA), validated its chemical structure, and investigated its thermal stability, porosity, morphology, and electrochemical properties. The Py-DSDA-COP displayed high semi-crystallinity, good porosity, and a specific capacitance of 56.18 F g −1 . To improve its electrochemical performance, we incorporated different nano-carbonaceous materials [fullerene (C60), MWCNTs, and SWCNTs] into Py-DSDA-COP and compared their characteristics. The Py-DSDA-COP/SWCNTs showed the highest specific capacitance (171 F g −1 ) at 1 A g −1 and highest energy density (23.7 W h kg −1 ) with a capacity retention of 93% after 2000 cycles, which is superior to those of Py-DSDA-COP/MWCNTs and Py-DSDA-COP/C60 nanocomposites. These superior electrochemical characteristics of Py-DSDA-COP/SWCNTs are attributed to the excellent π-π stacking interactions, higher EDLC behavior, higher conductivity, lower diameter, and higher surface area of SWCNTs than those of MWCNTs. We prepared Py-DSDA-COP/SWCNTs and this material showed a capacitance of 171 F g −1 and energy density of 23.7 W h kg −1 which is superior to those of Py-DSDA-COP/MWCNTs and Py-DSDA-COP/C60 nanocomposites.
ISSN:2050-7488
2050-7496
DOI:10.1039/d3ta02741d