Electrical Studies of Gel Polymer Electrolyte based on PAN for Electrochemical Cell Applications

Jyothi, N. Krishna; Ratnam, K.K. Venkata; Murthy, P. Narayana; Kumar, K. Vinod

doi:10.1016/j.matpr.2016.01.112

Cited by 16 publications

(3 citation statements)

References 41 publications

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“…12. The calculated crystallinity percentage was also decreased with dopant concentration (given in table 2) which signifies the distribution of KI in the host polymer's matrix [27,28]. According to the XRD results, the amorphous segment increases in the salt complex samples implying that disorder is more prevalent in doped samples.…”

Section: Xrd Studymentioning

confidence: 96%

“…Potassium is now extra resistive to moisture than lithium [27,28]. While, only a few studies on potassium complexes polymer electrolytes have been done.…”

Section: Introductionmentioning

confidence: 99%

“…While, only a few studies on potassium complexes polymer electrolytes have been done. N Krishna Jyothi et al studied electrolytes for electrochemical and solid-state battery applications of PAN-KI complexed gel polymer electrolytes [27,28]. But no merit has been given to potassium salt complexed HPMC-based polymer electrolytes.…”

Section: Introductionmentioning

confidence: 99%

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Influence of KI Salt Concentration on The Hydroxypropyl Methylcellulose Films: Optical Study

Sannappa

Demappa

Sunilkumar

2021

Preprint

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Herein the optical properties of Hydroxypropylmethyl cellulose/Potassium iodide (HPMC/KI) composite films were determined. Casting technique was introduced to make HPMC/KI films with different KI salt concentrations (0.1–1) wt%. The absorbance model was used to determine parameters like absorption edge, refractive index, real and imaginary sections of dielectric function, extinction coefficient, Urbach energy, band gap and optical conductivity in the spectral range 200–800 nm. As shown by study, KI salt doping affects the optical properties of HPMC. The absorption edge (\({E}_{e}\)) was widely displaced towards a region of lower photonic energy. For the 1 wt% KI/HPMC film, the direct and indirect optical bandwidth gaps of pure HPMC were reduced from 5.6 eV to 2.56 eV and 5.86 to 2.5 eV respectively. The optical dielectric loss method was effectively employed as an alternate method for estimating the optical bandgap. In addition, the Tauc’s extrapolation method identified the kind of electronic transition. The variation of optical energy band gap and dielectric constant based on KI salt concentration was used to investigate the credibility of the Penn’s model. In salt-composite films, an increase in Urbach energy and optical conductivity were observed which may be evidence of large shift from tail-to-tail and band to tail. Meanwhile, X-ray diffraction (XRD) examination revealed that the KI salts damaged the HPMC polymer's crystalline phase. Lastly, the films were also subjected to Fourier transform infrared spectroscopy (FTIR). The considerable variation in transmittance and band change in FTIR spectra was exposed for doped films.

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Section: Xrd Studymentioning

confidence: 96%

“…Potassium is now extra resistive to moisture than lithium [27,28]. While, only a few studies on potassium complexes polymer electrolytes have been done.…”

Section: Introductionmentioning

confidence: 99%

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Influence of KI Salt Concentration on The Hydroxypropyl Methylcellulose Films: Optical Study

Sannappa

Demappa

Sunilkumar

2021

Preprint

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Solid terpolymer electrolyte based on poly(vinyl butyral‐co‐vinyl alcohol‐co‐vinyl acetate) incorporated with lithium salt and tetraglyme for EDLCs

Bidin

Ming

Omar

et al. 2017

J of Applied Polymer Sci

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Solid terpolymer electrolytes (STEs) consist of different ratios of poly(vinyl butyral‐co‐vinyl alcohol‐co‐vinyl acetate) (PVBVA) and bis(trifluoromethane) sulfonamide lithium salt (LiTFSi) were prepared and the ionic conductivity of the prepared STEs was evaluated. The optimized STE (denoted as STE 20) was further doped with various amount of tetraglyme (10, 20, and 30 wt % and denoted as G10, G20, and G30, respectively). G20 enhanced the ionic conductivity from 6.22 (for STE 20) to 21.9 µS cm−1. This enhancement is due to the presence of abundant oxygen‐containing functional group in tetraglyme that provides more charge carrier mobility in the polymer matrix. The structure and complexation of the materials are authenticated via X‐ray diffraction and Fourier transform infrared spectroscopy analysis. The performance of electric double layer capacitors based on activated carbon (AC) fabricated with STE 20 (AC/STE 20/AC) and G20 (AC/G 20/AC) were studied via cyclic voltammetry, galvanostatic charge–discharge, and electrochemical impedance spectroscopy. AC/G 20/AC achieved the maximum specific capacitance of 10.20 F/g [which is higher than AC/STE 20/AC (9.30 F/g)] with 75% of specific capacitance retention after 1500 cycles. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 45902.

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Ionic Conductivity, Polymer Electrolyte, Membranes, Electrochemical Stability, Separators

Writer¹

2019

Lithium-Ion Batteries

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Electrical Studies of Gel Polymer Electrolyte based on PAN for Electrochemical Cell Applications

Cited by 16 publications

References 41 publications

Influence of KI Salt Concentration on The Hydroxypropyl Methylcellulose Films: Optical Study

Influence of KI Salt Concentration on The Hydroxypropyl Methylcellulose Films: Optical Study

Solid terpolymer electrolyte based on poly(vinyl butyral‐co‐vinyl alcohol‐co‐vinyl acetate) incorporated with lithium salt and tetraglyme for EDLCs

Ionic Conductivity, Polymer Electrolyte, Membranes, Electrochemical Stability, Separators

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