Poly(3,4-ethylenedioxythiophene) Based Solid-State Polymer Supercapacitor with Ionic Liquid Gel Polymer Electrolyte
College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Yingze West Street 79, Taiyuan 030024, China
*
Author to whom correspondence should be addressed.
Polymers 2020, 12(2), 297; https://doi.org/10.3390/polym12020297
Received: 2 January 2020
/
Revised: 17 January 2020
/
Accepted: 20 January 2020
/
Published: 2 February 2020
In this work, solid-state polymer supercapacitor (SSC) was assembled using poly(3,4-ethylenedioxythiophene/carbon paper (PEDOT/CP) as an electrode and ionic liquid (1-butyl-3-methylimidazole tetrafluoroborate)/polyvinyl alcohol/sulfuric acid (IL/PVA/H2SO4) as a gel polymer electrolyte (GPE). The GPE was treated through freezing–thawing (F/T) cycles to improve the electrochemical properties of PEDOT SSC. Cyclic voltammetry (CV), galvanostatic charge–discharge measurements (GCD) and electrochemical impedance spectroscopy (EIS) techniques and conductivity were carried out to study the electrochemical performance. The results showed that the SSC based on ionic liquid GPE (SSC-IL/PVA/H2SO4) has a higher specific capacitance (with the value of 86.81 F/g at 1 mA/cm2) than the SSC-PVA/H2SO4.The number of F/T cycles has a great effect on the electrochemical performance of the device. The energy density of the SSC treated with 3 F/T cycles was significantly improved, reaching 176.90 Wh/kg. Compared with the traditional electrolytes, IL GPE has the advantages of high ionic conductivity, less volatility, non-flammability and wider potential window. Moreover, the IL GPE has excellent elastic recovery and self-healing performance, leading to its great potential applications in flexible or smart energy storage equipment.
View Full-Text
Keywords:
poly(3,4-ethylenedioxythiophene); 1-butyl-3-methylimidazolium tetrafluoroborate; gel polymer electrolyte; solid state supercapacitor
▼
Show Figures
Graphical abstract
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited
MDPI and ACS Style
Du, H.; Wu, Z.; Xu, Y.; Liu, S.; Yang, H. Poly(3,4-ethylenedioxythiophene) Based Solid-State Polymer Supercapacitor with Ionic Liquid Gel Polymer Electrolyte. Polymers 2020, 12, 297. https://doi.org/10.3390/polym12020297
AMA Style
Du H, Wu Z, Xu Y, Liu S, Yang H. Poly(3,4-ethylenedioxythiophene) Based Solid-State Polymer Supercapacitor with Ionic Liquid Gel Polymer Electrolyte. Polymers. 2020; 12(2):297. https://doi.org/10.3390/polym12020297
Chicago/Turabian StyleDu, Haiyan, Zemin Wu, Yuyu Xu, Shaoze Liu, and Huimin Yang. 2020. "Poly(3,4-ethylenedioxythiophene) Based Solid-State Polymer Supercapacitor with Ionic Liquid Gel Polymer Electrolyte" Polymers 12, no. 2: 297. https://doi.org/10.3390/polym12020297
Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.
