Effect of Cathode thickness on the performance of the cell Li/ PAN:EC:PC:LiCF&lt;sub&gt;3&lt;/sub&gt;SO&lt;sub&gt;3&lt;/sub&gt;/PPy:DBS

Vidanapathirana, K. P.; Careem, M.A.

doi:10.4038/sljp.v7i0.206

Cited by 2 publications

(2 citation statements)

References 10 publications

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“…As the thickness increased, peak positions shift towards higher potentials. This is because for thicker films, more energy is needed to obtain the maximum cycleable capacity and hence peak positions move to higher potentials (Vidanapathirana et al 2006). This shift in the peak position could also be due to the slower diffusion of ions in the thicker films as suggested by Osaka et al (Osaka et al 1987).…”

Section: Discussionmentioning

confidence: 96%

Performance of Zn rechargeable cells having Polypyrrole cathodes doped with surfactant anion

et al. 2016

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Currently there exists a very high demand for electrochemical energy storage devices such as rechargeable cells and super capacitors due to massive increase in the use of portable electronics. At the moment this demand is mainly supplied by Li based cells. However, due to high cost, rapid reactivity and issues in disposal of Li, attention has been diverted on non Li based cells. Zn has been identified as a good candidate to replace Li. Even though several Zn based rechargeable cells were reported, not much work has been carried out on cells with conducting polymer cathode based Zn cells. In this study, performance of Zn rechargeable cells fabricated with conducting polymer polypyrrole (PPy) doped with a surfactant anion is reported. PPy films were galvanostatically electro polymerized on to stainless steel disc and cells were assembled with a polyvinylidenefluoride based gel polymer electrolyte having zinc-trifluoromethanesulfonate as the salt. Cells having different cathode thicknesses were fabricated and were characterized using cyclic voltammetry, electrochemical impedance spectroscopy and continuous charge-discharge tests. Cells exhibited open circuit voltages between 0.9-1.0 V. Cycling testes showed that cycleable capacity almost follows the thickness variation of the cathode. Continuous charge-discharge tests revealed that the capacity decrease with the cycle number was higher in thinner films.

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Section: Discussionmentioning

confidence: 96%

Performance of Zn rechargeable cells having Polypyrrole cathodes doped with surfactant anion

et al. 2016

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“…Ag/AgCl and Pt were used as reference electrodes and counter electrodes, respectively. The pyrrole concentration was 0.1 M and the SDBS concentration was 0.05 M. The polypyrrole (PPy) film thickness was controlled to be 1 µm using a current density of 1 mA during a period of 240 s (Vidanapathirana & Careem, 2006). Single electrode mass was about 0.5 mg.…”

Section: Fabrication Of Redox Capacitorsmentioning

confidence: 99%

Fabrication and evaluation of an all solid redox capacitor with an iodine based gel polymer electrolyte

Bandaranayake

Weerasinghe

Perera

et al. 2017

J. Natn. Sci. Foundation Sri Lanka

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Gel polymer electrolytes (GPEs) have demonstrated a greater potential to be used as electrolytes for various applications such as batteries, super capacitors, electrochromic devices and dye sensitised solar cells. They consist of a salt and a mixture of solvents trapped in a polymer matrix. In this study, optimisation and characterisation of a GPE consisting of polyvinylidene fluoride, ethylene carbonate, propylene carbonate and sodium iodide and its application in a redox capacitor with two polypyrrole electrodes was studied. GPE shows a conductivity of 9.69 × 10 -3 Scm -1 at room temperature (28 °C) with good mechanical stability. The corresponding composition is 1.13 PVdF : 2.5 EC : 2.5 PC : 0.4 NaI (by weight). The variation of conductivity with temperature follows Arhenius behaviour suggesting that the conductivity mechanism takes place via hopping of ions. Conductivity is purely ionic in nature. Properties of the redox capacitors were studied by the cyclic voltammetry (CV) technique, electrochemical impedance spectroscopy (EIS) technique and galvanostatic charge-discharge (GCD) test. The CV results showed the dependency of specific capacitance on the scan rate. The EIS results showed that capacitive behaviour becomes dominant only at low frequency range. The resulting specific capacitance was 3.19 Fg -1 . It was found that the redox capacitor exhibits an average discharge specific capacitance of 5.93 Fg

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Effect of Cathode thickness on the performance of the cell Li/ PAN:EC:PC:LiCF<sub>3</sub>SO<sub>3</sub>/PPy:DBS

Cited by 2 publications

References 10 publications

Performance of Zn rechargeable cells having Polypyrrole cathodes doped with surfactant anion

Performance of Zn rechargeable cells having Polypyrrole cathodes doped with surfactant anion

Fabrication and evaluation of an all solid redox capacitor with an iodine based gel polymer electrolyte

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