Thermal and electrical studies on composite gel electrolyte system: PEG–PVA–(NH4CH2CO2)2

A gel electrolyte system was prepared by dissolving poly(methyl methacrylate) in ethylene carbonate and propylene carbonate doped with salicylic acid and plasticized with dibutylphthalate (DBP). The gel was heated to 70 0C before it was cast into glass dishes. The composition of the electrolytes was 35 wt% EC, 30 wt% PC, 5 wt% SA, 5wt% DBP and 25 wt% PMMA. The gel electrolyte was sandwiched between two stainless-steel blocking electrodes and impedance measurements were conducted. The conductivity of the gel electrolyte was 2.03 x 10-4 S cm-1 at room temperature. The conductivity activation energy was obtained from the log σ versus 103/T graph. Loss tangent was calculated at every frequency for all temperatures. From the tan δ versus frequency plot, the activation energy of relaxation of the ion was calculated and plotted as ln τ versus 103/T. The conductivity activation energy value was (0.21 ± 0.04) eV and the activation energy of relaxation was (0.24±0.07) eV. The similarity between these activation energies imply that the protons ‘hop’ from one electronegative oxygen site in DBP to another.

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Improved Gel Electrolyte by Layered α-Zirconium Phosphate for Quasi-Solid-State Dye-Sensitized Solar Cells

Materials Science Forum ◽

10.4028/www.scientific.net/msf.685.71 ◽

2011 ◽

Vol 685 ◽

pp. 71-75 ◽

Cited By ~ 1

Author(s):

Liu Han ◽

Ning Wang ◽

H.C. He ◽

D.T. Kong ◽

H.J. Chen

Keyword(s):

Electrical Conductivity ◽

Solar Cells ◽

Zirconium Phosphate ◽

Dye Sensitized Solar Cells ◽

Gel Electrolyte ◽

Dye Sensitized ◽

Photovoltaic Conversion Efficiency ◽

Composite Gel ◽

Ionic Electrical Conductivity ◽

Sensitized Solar Cells

In this article, we present a new composite gel electrolyte for dye-sensitized solar cells (DSSC), with butylamine (BA) and propylene carbonate (PC) intercalated α-Zirconium phosphate (ZrP-BA-PC) as solid fillers dispersed in polyethlene oxide (PEO) polymer. The ionic electrical conductivity was markedly improved with the ZrP-BA-PC additive at ambient temperature. The DSSC with 5 wt% ZrP addition into the electrolyte obtained the maximum photovoltaic conversion efficiency of 6.61 % under 100 mW/cm-2irradiation.

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Improved performance of dye-sensitized solar cells based on modified kaolin/PVDF-HFP composite gel electrolytes

RSC Advances ◽

10.1039/c6ra19803a ◽

2016 ◽

Vol 6 (102) ◽

pp. 100079-100089 ◽

Cited By ~ 12

Author(s):

Kaiyue Zhang ◽

Zijian Cui ◽

Guangyu Xing ◽

Yaqing Feng ◽

Shuxian Meng

Keyword(s):

Solar Cells ◽

Dye Sensitized Solar Cells ◽

Gel Electrolyte ◽

Dye Sensitized ◽

Gel Electrolytes ◽

Composite Gel ◽

Improved Performance ◽

Sensitized Solar Cells

The DSSCs based on modified kaolin/PVDF-HFP composite gel electrolyte have excellent efficiency.

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DMA and Conductivity Studies in PVA:NH4SCN:DMSO:MWNT Nanocomposite Polymer Dried Gel Electrolytes

Journal of Nanomaterials ◽

10.1155/2015/435625 ◽

2015 ◽

Vol 2015 ◽

pp. 1-7 ◽

Cited By ~ 12

Author(s):

S. L. Agrawal ◽

Neelesh Rai

Keyword(s):

Composite System ◽

Mechanical Stability ◽

Multiwall Carbon Nanotubes ◽

Mechanical Analysis ◽

Gel Electrolyte ◽

Composite Electrolyte ◽

Nanocomposite Polymer ◽

Composite Gel ◽

Conduction Behavior ◽

Solution Cast

This paper deals with findings on dynamic mechanical analysis (DMA) and ion-conduction behavior of MWNTs (multiwall carbon nanotubes) doped PVA:NH4SCN:DMSO dried gel electrolyte system prepared for four filler concentrations (2, 4, 6 & 8 wt%) by solution cast technique. XRD measurements reveal enhancement in amorphous behavior of composite gel electrolyte upon incorporation of filler particles. Better mechanical stability is noticed in the composite system upon dispersal of MWNT along with presence of dynamicTgduring DMA measurements. Enhancement in ionic conductivity has been noticed with an optimum value of 4.5 × 10−3 Scm−1for 6 wt% MWNTs filled composite electrolyte. Composite system exhibits combination of Arrhenius and Vogel-Tammam-Fulcher (VTF) behavior in temperature dependent conductivity study. The a.c. conductivity response seems to follow universal power law.

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