Solid-State Supercapacitors Based on Pulse Polymerized Poly(3,4-ethylenedioxythiophene) Electrodes and Ionic Liquid Gel Polymer Electrolyte

2012 ◽  
Vol 159 (10) ◽  
pp. A1664-A1671 ◽  
Author(s):  
G. P. Pandey ◽  
A. C. Rastogi

2016 ◽  
Vol 328 ◽  
pp. 510-519 ◽  
Author(s):  
Gaind P. Pandey ◽  
Tao Liu ◽  
Cody Hancock ◽  
Yonghui Li ◽  
Xiuzhi Susan Sun ◽  
...  


2012 ◽  
Vol 1448 ◽  
Author(s):  
G. P. Pandey ◽  
A. C. Rastogi

ABSTRACTPoly(3,4-ethylenedioxythiophene) (PEDOT) electrodes are prepared by a novel ultrashort galvanic pulse electropolymerization technique for application in solid-state supercapacitors. Microstructure studies using scanning electron microscopy (SEM) show that PEDOT electrodes deposited by pulse polymerization are highly porous as compared to the conventional potentiostatic polymerization. In addition, as revealed by the X-ray photoelectron spectroscopy (XPS) studies in the PEDOT films formed by pulse polymerization, the polymer chains are fully conjugated with the dopant ClO4- ions. Solid-state supercapacitor cells using pulse polymerized PEDOT electrodes and ionic liquid gel polymer electrolyte were fabricated and characterized. The impedance spectroscopy studies show that the pulse polymerized PEDOT electrode have specific capacitance value of ∼ 65 F g-1 as compared to ∼52 F g-1for potentiostatically polymerized PEDOT and significantly lower interfacial and charge transfer resistance. Cyclic voltammetry (CV) and galvanostatic charge-discharge characterization show highly capacitive behavior of the supercapacitor cells in the solid-state configuration.



2019 ◽  
Vol 43 (47) ◽  
pp. 18935-18942 ◽  
Author(s):  
Cheng-Long Geng ◽  
Le-Qing Fan ◽  
Chun-Yan Wang ◽  
Yong-Lan Wang ◽  
Si-Jia Sun ◽  
...  

A redox-active gel polymer electrolyte with a high working voltage was synthesized and used for assembling a quasi-solid-state supercapacitor possessing high energy density.





2018 ◽  
Vol 10 (46) ◽  
pp. 39570-39580 ◽  
Author(s):  
Mengyuan Jin ◽  
Yifan Zhang ◽  
Chaojing Yan ◽  
Yanbao Fu ◽  
Yanhui Guo ◽  
...  


Polymers ◽  
2020 ◽  
Vol 12 (2) ◽  
pp. 297 ◽  
Author(s):  
Haiyan Du ◽  
Zemin Wu ◽  
Yuyu Xu ◽  
Shaoze Liu ◽  
Huimin Yang

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.



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