Electrical Conduction Mechanism in Solid Polymer Electrolytes: New Concepts to Arrhenius Equation

Abstract

Solid polymer electrolytes based on chitosan NaCF 3 SO 3 have been prepared by the solution cast technique. X-ray diffraction shows that the crystalline phase of the pure chitosan membrane has been partially disrupted. The fourier transform infrared (FTIR) results reveal the complexation between the chitosan polymer and the sodium triflate (NaTf) salt. The dielectric constant and DC conductivity follow the same trend with NaTf salt concentration. The increase in dielectric constant at different temperatures indicates an increase in DC conductivity. The ion conduction mechanism follows the Arrhenius behavior. The dependence of DC conductivity on both temperature and dielectric constant ( dc ( , ) = 0 − / ) is also demonstrated.

α‐Thiophene end‐capped styrene copolymer containing fullerene pendant moieties: Synthesis, characterization, and gas sensing properties

“…It is obvious that at higher temperatures the DC conductivity increased rapidly as seen in Figure . This is due to the fact that at higher temperatures, movement of polymer chain segments is thermally enhanced . It would increase assisting and resulting in the increase in conductivity.…”

“…They calculated three values of E A from the slope of log σ −1000/ T for synthesized polymer blends and found the type of typical electronic conduction in between 0.456 and 0.712 eV for polymer blends while the values in excess of 0.8 eV are attributed to ionic conduction . Aziz et al . investigated to the electrical properties of solid polymer electrolyte based on chitosan:NaCF 3 SO 3 .…”

“…investigated to the electrical properties of solid polymer electrolyte based on chitosan:NaCF 3 SO 3 . They notified that CS10 sample indicate the Arrhenius behavior of CS:NaTf SPEs and the increase of DC conductivity with increasing temperature is due to the increase of carrier density . G. Sberveglieri and coworkers reported that the current rise of C 60 thin film (180 nm) deposited on alumina can be fitted by the exponential function with an activation energy E A equal to 0.7 eV.…”

A new route to polymeric materials derived from chitosan and natural rubber

“…The intensity of the band at 1379 cm -1 in the case of NR-CS (34 %) is seen to increase in comparison to that at 1456 cm -1 (in contrast to that in NR), and this may be due to the C-N stretching that could result due to the formation of C-N bonds between chitosan and ENR. Aziz and Abidin have earlier reported that the band position due to N-H stretching vibration could be significantly altered when a cation salt was attached to chitosan [34]. They also mentioned that in spite of the mixed signals arising from the N-H and O-H bond vibrations, the region starting from 3300 to 3500 cm -1 could be attributed to N-H vibrations.…”

Novel colloidal nanofiber electrolytes from PVA-organoclay/poly(MA-alt-MVE), and their NaOH and Ag-carrying polymer complexes

“…B and C). To calculate activation energy ( E a ) at above mentioned temperature range, the well‐known Arrhenius equation is used : where E a is the activation energy, R is universal gas constant, σ o is a temperature‐independent constant, and T is temperature (K). The plots showing a linear behavior between the Log σ or Log R and 1000/ T (K −1 ) indicated a good fit to the Arrhenius equation.…”