Solid gellan gum polymer electrolyte for energy application

Singh, Rahul; Bhattacharya, Bhaskar; Rhee, Hee‐Woo; Singh, Pramod K.

doi:10.1016/j.ijhydene.2015.05.084

Cited by 53 publications

(13 citation statements)

References 31 publications

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“…The batteries comprising of solid polymer electrolytes have proven to be cost effective, safe under harsh conditions, environmentally acceptable, provides limitless design flexibility and high performance [7,8]. It is well known that solid polymer electrolytes have several advantages such as light weight, easy fabrication of thin films of desired shape and size, elimination of leakage current, good mechanical strength, excellent physical and chemical stability and tremendous flexibility in design over their liquid counterparts [9]. However, there are few technical problems with solid polymer electrolytes which include low ambient temperature conductivity, cationic transport number, inadequate thermal stability and poor electrochemical performance of lithium cells below ambient temperature [10,11].…”

Section: Introductionmentioning

confidence: 99%

Impedance spectroscopy, ionic conductivity and dielectric studies of new Li+ ion conducting polymer blend electrolytes based on biodegradable polymers for solid state battery applications

Deshmukh

Ahamed

Polu³

et al. 2016

J Mater Sci: Mater Electron

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New solid polymer blend electrolyte films based on biodegradable polymer blend comprising of polyvinyl alcohol (PVA) and poly (N-vinyl pyrrolidone) (PVP) doped with different wt% of lithium carbonate (Li 2 CO 3 ) salt have been prepared by solution casting method. The resulting PVA/PVP/Li 2 CO 3 polymer blend electrolyte films have been characterized by various analytical techniques such as FTIR, UV-vis, XRD, TGA, polarized optical microscopy and scanning electron microscopy. The FTIR and XRD analysis confirmed the complex formation between PVA/ PVP blend and Li 2 CO 3 salt. The ionic conductivity and the dielectric properties of PVA/PVP/Li 2 CO 3 polymer blend electrolyte films were investigated using an impedance spectroscopy. It was observed that the ionic conductivity of PVA/PVP/Li 2 CO 3 electrolyte system increases as a function of Li 2 CO 3 concentration. The highest ionic conductivity was found to be 1.15 9 10 -5 S cm -1 for polymer blend electrolyte with 20 wt% Li 2 CO 3 content. On the other hand, the dielectric results revealed the non-Debye type of behaviour. The dielectric constant values indicate a strong dielectric dispersion in the studied frequency range which increases as the Li 2 CO 3 content increases. The dielectric constant as high as 1200 (e = 1201.57, 50 Hz, 150°C) and the dielectric loss well below 4 (tan d = 3.94, 50 Hz, 150°C) were obtained for polymer blend electrolytes with 25 wt% Li 2 CO 3 salt. Thus, the results obtained in the present study suggest that the PVA/PVP/ Li 2 CO 3 polymer blend electrolyte system seems to be a promising candidate for solid state battery applications.

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Section: Introductionmentioning

confidence: 99%

Impedance spectroscopy, ionic conductivity and dielectric studies of new Li+ ion conducting polymer blend electrolytes based on biodegradable polymers for solid state battery applications

Deshmukh

Ahamed

Polu³

et al. 2016

J Mater Sci: Mater Electron

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“…This conductivity enhancement was due to the increase in number of mobile charge carriers (cation potassium K + and anion hydroxide OH − ), while continuously decreases till 80 wt% KOH could be attributed due to the formation of multiple charge carriers. 32 –34…”

Section: Resultsmentioning

confidence: 99%

Electrochemical double-layer supercapacitor using poly(methyl methacrylate) solid polymer electrolyte

Zakariya’u

Gültekin

Singh

et al. 2020

High Performance Polymers

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The prime objective of the present article is to develop an efficient supercapacitor based on polymer electrolyte doped with salt. Solution cast technique was adopted to develop a solid polymer electrolyte of polymer poly(methyl methacrylate) (PMMA) as host polymer and salt potassium hydroxide (KOH) as a dopant. Incorporation of salt increases the amorphicity and assisted in conductivity enhancement. Moreover, doping of salt increases the overall conductivity of polymer electrolyte film. Electrochemical impedance spectroscopy reveals the enhancement in conductivity (four orders of magnitude) by salt doping. Fourier transform infrared shows the complexation and composite nature of films. Polarized optical microscopy shows the reduction in crystallinity, which is further confirmed by Differential scanning calorimetry. Fabricated electrochemical double-layer supercapacitor using maximum conducting polymer—salt electrolyte and symmetric carbon nanotubes electrodes shows specific capacitance of 21.86 F g−1.

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“…From the conductivity plot, it is clear that the conductivity initially increases on adding of KOH into PMMA polymer matrix which is due to the number of mobile charge carriers' enhancement as salt KOH composed of cation potassium K + and anion hydroxide OH -. The conductivity (σ) at 30 wt.% KOH into PMMA attains maximum conductivity (σ) value of 5.21 x 10 -5 and then continuously decreases after 40 wt.% to 80 wt.% KOH which can be attributed to the formation of multiple charge carriers [32][33] Figure 1: Ionic conductivity vs wt% of salt in pure polymer film.…”

Section: Conductivity Measurementmentioning

confidence: 99%

Potassium Hydroxide Doped With (Poly(Methyl Methacrylate) (PMMA) Polymer as Electrolyte for Electrolytic Double layer Supercapacitor (EDLC) Application

Zakariya’u¹,

Sifawa²

2022

CaJoST

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The prime objective of the present paper is to develop polymer electrolyte doped with salt. A solution cast technique was adopted to develop a solid polymer electrolyte of polymer (Poly (methyl methacrylate) (PMMA) as host polymer and salt potassium hydroxide, KOH as dopant. Incorporation of salt increases the amophosity and homogeneity, decreases the surface roughness. Moreover, doping of salt (KOH) increases the overall conductivity of polymer electrolyte film. Electrochemical impedance spectroscopy (EIS) reveals the enhancement in conductivity (4 orders of magnitude) by salt doping. FTIR shows the complexation and composite nature of films. Polarized optical microscopy (POM) shows reduction in crystallinity which is further confirmed by Differential scanning calorimetry (DSC). Fabricated electrochemical double-layer supercapacitor using maximum conducting polymer salt electrolyte and symmetric carbon nanotubes electrodes shows specific capacitance of 21.86. Keywords: Polymer electrolyte; conductivity; DSC; FTIR

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Solid gellan gum polymer electrolyte for energy application

Cited by 53 publications

References 31 publications

Impedance spectroscopy, ionic conductivity and dielectric studies of new Li+ ion conducting polymer blend electrolytes based on biodegradable polymers for solid state battery applications

Impedance spectroscopy, ionic conductivity and dielectric studies of new Li+ ion conducting polymer blend electrolytes based on biodegradable polymers for solid state battery applications

Electrochemical double-layer supercapacitor using poly(methyl methacrylate) solid polymer electrolyte

Potassium Hydroxide Doped With (Poly(Methyl Methacrylate) (PMMA) Polymer as Electrolyte for Electrolytic Double layer Supercapacitor (EDLC) Application

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