Studies on ionic liquid based nanocomposite gel polymer electrolyte and its application in sodium battery

Electrolyte as one of the major components in dye sensitized solar cells (DSSCs) plays an important role in dye regeneration and as the inner charge carrier transport between electrodes. Gel polymer electrolyte is a potential alternative to liquid electrolytes which suffer of leakage and solvent evaporation. In this present research, functionalization of chitosan by the quaternization reaction of chitosan with iodopropane forming tripropyl chitosan iodide is proposed for the preparation of gel polymer electrolyte. Tripropyl chitosan iodide was characterized by nuclear magnetic resonance spectroscopy (NMR), Fourier transform infrared spectroscopy (FTIR) and thermogravimetric analysis (TGA). Four different polymer electrolytes were tested at different compositions in presence of iodide/triiodide redox salt and imidazolium ionic liquid in DSSCs configurations. The results show that the gel polymer electrolyte containing the tripropyl chitosan iodide in presence of 1-propyl-3-methylimidazolium iodide ionic liquid showed better performance with power conversion efficiency of 0.415% as compared to the gel polymer electrolyte film without ionic liquid with power conversion efficiency of 0.075%. The results shown the synergistic effects of the polycationic tripropyl chitosan iodide with the ionic liquid 1-propyl-3-methylimidazolium iodide on the photovoltaic performance.

Download Full-text

Thermostable gel polymer electrolyte based on succinonitrile and ionic liquid for high-performance solid-state supercapacitors

Journal of Power Sources ◽

10.1016/j.jpowsour.2016.08.032 ◽

2016 ◽

Vol 328 ◽

pp. 510-519 ◽

Cited By ~ 72

Author(s):

Gaind P. Pandey ◽

Tao Liu ◽

Cody Hancock ◽

Yonghui Li ◽

Xiuzhi Susan Sun ◽

...

Keyword(s):

Ionic Liquid ◽

Solid State ◽

Polymer Electrolyte ◽

High Performance ◽

Gel Polymer Electrolyte

Download Full-text

Pulse Polymerized Poly(3,4-ethylenedioxythiophene) Electrodes For Solid-State Supercapacitors with Ionic Liquid Gel Polymer Electrolyte

MRS Proceedings ◽

10.1557/opl.2012.1491 ◽

2012 ◽

Vol 1448 ◽

Author(s):

G. P. Pandey ◽

A. C. Rastogi

Keyword(s):

Ionic Liquid ◽

Solid State ◽

Polymer Electrolyte ◽

Photoelectron Spectroscopy ◽

Gel Polymer Electrolyte ◽

Charge Transfer Resistance ◽

Polymer Chains ◽

Transfer Resistance ◽

Spectroscopy Studies ◽

Highly Porous

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.

Download Full-text