Facile Electrodeposition of Poly(3,4-ethylenedioxythiophene) on Poly(vinyl alcohol) Nanofibers as the Positive Electrode for High-Performance Asymmetric Supercapacitor

Abstract

Poly(vinyl alcohol)/poly(3,4-ethylenedioxythiophene) (PVA/PEDOT) nanofibers were synthesized as a positive electrode for high-performance asymmetric supercapacitor (ASC). PVA/PEDOT nanofibers were prepared through electrospinning and electrodeposition meanwhile reduced graphene oxide (rGO) was obtained by electrochemical reduction. The PVA/PEDOT nanofibers demonstrated cauliflower-like morphology showing that PEDOT was uniformly coated on the smooth cross-linking structure of PVA nanofibers. In addition, the ASC showed a remarkable energy output efficiency by delivering specific energy of 21.45 Wh·kg−1 at a specific power of 335.50 W·kg−1 with good cyclability performance (83% capacitance retained) after 5000 CV cycles. The outstanding supercapacitive performance is contributed from the synergistic effects of both PVA/PEDOT//rGO, which gives promising materials for designing high-performance supercapacitor applications.

Progress in Conducting Polymer‐Based Electrospun fibers for Supercapacitor Applications: A Review

“…It can be deduced that electrospinning is very effective in electrochemical applications, and investigations need to continue for versatile applications that demand cost-effectiveness and high efficiency. PVA/PEDOT 113.48 F g À 1 at 5 mV s À 1 in 1 M KCL 21.45 Wh kg À 1 335.5 W kg À 1 83 % after 5000 cycles [80] PEDOT: PSS 3.6 F g À 1 at 5 μA cm À 2 in PVA/H 3 PO 4 gel electrolyte 0.32 Wh kg À 1 11.8 W kg À 1 92 % after 1000 cycles [81] PEDOT/PSS-PAN 26.88 F cm À 3 at 0.08 A cm À 3 in H 3 PO 4 /PVA gel electrolyte 9.56 mWh cm À 3 830 mW cm À 3 97 % after 5000 cycles [82] ChemistrySelect…”

“…The enhanced electrochemical performance of the composite was attributed to the porous cauliflower‐like structure of the polymer that is believed to enhance the conductivity of the active material. Dasdevan et al [80] . synthesised PVA/PEDOT NFs to fabricate a supercapacitor using the same integrated method.…”

A review of π-conjugated polymer-based nanocomposites for metal-ion batteries and supercapacitors

“…Moreover, the summary of representative recent reports based on π-CPs used as an electrode material in asymmetric SCPs is demonstrated in table 4. 83% (5000) [140] royalsocietypublishing.org/journal/rsos R. Soc. Open Sci.…”

“… PANi/PEDOT/PANi/UrGO//PEDOT-MoS 2 PVA/H 2 SO 4 g 0.2 to −0.4 61 F cm −3 1 A cm −3 5.4 mWh cm −3 , 1 A cm −3 73% (1000) [ 128 ] 4. GO@PANI/CNT-SS 1 M KCl (1.0 to 1.6 V 331.49 F g −1 5 mV s −1 21.45 Wh kg −1 83% (5000) [ 140 ] 5. PEDOT//PBOTT-BTD 0.1 m TBAPF6/ACN solution containing 0.02 m EDOT.…”

“… Ppy@NiCo2S4//N-C 2 M KOH 0–0.5 908.1 F g −1 1 A g −1 ), 50.82 Wh kg −1 126.6% (2000) [ 144 ] 11. PVA/PEDOT//rGO, 1 A g −1 in 1 M KOH (1.0 to 1.6 V 113.48 F g −1 at 5 mV s −1 21.45 Wh kg −1 83% (5000) [ 140 ] …”