Poly(3,4-ethylenedioxythiophene) Doped with Carbon Materials for High-Performance Supercapacitor: A Comparison Study

Abstract

A comparative study of multiwalled carbon nanotube (MWCNT), graphene oxide (GO), and nanocrystalline cellulose (NCC) as a dopant in the preparation of poly(3,4-ethylenedioxythiophene)- (PEDOT-) based hybrid nanocomposites was presented here. The hybrid nanocomposites were prepared via the electrochemical method in aqueous solution. The FTIR and Raman spectra confirmed the successful incorporation of dopants (MWCNT, GO, and NCC) into PEDOT matrix in the process of formation of the hybrid nanocomposites. It was observed that the choice of the carbon material affected the morphologies and supercapacitive properties of the hybrid nanocomposites. Incorporation of GO with PEDOT produces a paper-like sheet nanocomposite in which the wrinkled surface results in larger surface area compared to the network-like and rod-like structures of PEDOT/MWCNT and PEDOT/NCC, respectively. Owing to larger surface area, PEDOT/GO exhibits the highest specific capacitance (120.13 F/g), low equivalent series resistance (34.44 Ω), and retaining 87.99% of the initial specific capacitance after 1000 cycles, signifying a long-term cycling stability. Furthermore, the high performance of PEDOT/GO is also demonstrated by its high specific energy and specific power.

Fabrication of poly(vinyl alcohol)‐graphene quantum dots coated with poly(3,4‐ethylenedioxythiophene) for supercapacitor

“…The high C sp of PVA‐GQD/PEDOT is resulting from the presence of PVA‐GQD nanofibers (template), which provides high surface area for charge accumulation and the existence of high conductivity of PEDOT. These results are comparable to the PEDOT‐based supercapacitors reported in the literature . Therefore, these results indicate that incorporation of GQD and PEDOT significantly improve the supercapacitive performance of PVA‐GQD/PEDOT nanocomposite.…”

“…The FTIR spectrum of GQD shows the presence of two major peaks of oxygen functional groups appeared at 1730 and 3345 cm −1 , which corresponding to CO and OH group . The adsorption bands of PEDOT were observed at 1473, 630, 1315, and 1033 cm −1 that assigned to the CC, CS, CC, and CO stretching vibrations from the thiophene and ethylenedioxy group of PEDOT . The main peaks of PEDOT still can be observed in the spectrum of PVA/PEDOT and PVA‐GQD/PEDOT, indicating that PEDOT was successfully electrodeposited on the electrospun nanofibers.…”

Two‐Dimensional Exfoliated MoS2 Flakes Integrated with Polyindole for Supercapacitor Application

“…This ultimately results into a easier and faster ion diffussion within the electrode active material. [35]…”

Recent Advances in Layer-by-Layer Assembled Conducting Polymer Based Composites for Supercapacitors

“…The advantage of this straightforward technique is that it involves mild processing conditions which are mostly conducted at room temperature, non-toxic chemicals, and minimum use of chemicals [78,81,82]. The most common electrolytes used in the electrodeposition are aqueous [80,[83][84][85] and non-aqueous [86,87].…”