Electrochemical impedance spectroscopic study of the intercalation of lithium and sodium ions into polyparaphenylene in carbonate-based electrolytes

Dubois, Marc; Billaud, D.

doi:10.1016/s0013-4686(02)00517-0

Cited by 19 publications

(8 citation statements)

References 25 publications

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“…Electrochemical impedance spectroscopy (EIS) has previously been little used in characterising these polymer films [20][21][22][23], but can give valuable information about the phenomena involved in the overall redox processes and about the bulk and interfacial characteristics of the films.…”

Section: E-mail Address: Brett@ciucpt (Cma Brett)mentioning

confidence: 99%

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Electrosynthesis and electrochemical characterisation of phenazine polymers for application in biosensors

Bârsan

Pinto

Brett

2008

Electrochimica Acta

106

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A comparative investigation has been undertaken of the electrosynthesis and electrochemical properties of three different electroactive polymers on carbon film electrode substrates: poly(neutral red) from the phenazine dye neutral red, and poly(methylene green) and poly(methylene blue), from the corresponding phenothiazine dyes. The formation of the radical cation at different potentials and the chemical structures of the monomers both influence the electropolymerisation process of the three polyaromatic dyes. Of the three, poly(neutral red) is shown to have the best adhesion at carbon film electrodes. The influence of the electrolyte and pH on film growth and on electrochemical properties was investigated. The formal potential decreased linearly with increase in pH, in the pH range from 1 to 7 for all three polymers. The modified electrodes were also characterised by electrochemical impedance spectroscopy. The bulk and interfacial characteristics of the two phenothiazine polymers were similar and oxygendependent, but different to those of the phenazine polymer, poly(neutral red), which were not significantly influenced by the presence of oxygen in solution. Perspectives for use in electrochemical biosensors are indicated.

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Section: E-mail Address: Brett@ciucpt (Cma Brett)mentioning

confidence: 99%

“…The equivalent circuit proposed to fit the EIS results, is the same as that used in [21,22], for surfaces covered by electroactive polymers. The equivalent circuit, shown in Fig.…”

Section: Characterisation Of the Polymers By Eismentioning

confidence: 99%

Electrosynthesis and electrochemical characterisation of phenazine polymers for application in biosensors

Bârsan

Pinto

Brett

2008

Electrochimica Acta

106

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“…Unfortunately, the outstanding LIB graphite anodes previously put on the market do not have a high reversible capacity in NIB [7]. On the other hand, many other carbonaceous materials such as solid carbon [8,9], carbon fibers [10][11][12][13], carbon nanotubes [14], graphene [15], carbon black [16], cellulose [17]], polyparaphenylene [18], porous carbon [19], carbon spheres [20] and petroleum coke [21] have been found to facilitate the sodium ion incorporation / extraction process. Carbon nanomaterials, which are considered one of the most promising candidates among a limited number of anode materials for NIBs, have such advantages as electrical conductivity, heat resistance, environmental friendliness, and cost effectiveness [14].…”

Section: Synthesis Of Carbon Nanofibers Based On Humic Acid and Polyacryonitrile By Electrospinning Methodsmentioning

confidence: 99%

Synthesis of Carbon Nanofibers Based on Humic Acid and Polyacryonitrile by Electrospinning Method

Yermagambet¹,

Казанкапова²,

Nauryzbayeva³

et al. 2021

News of NAN RK. SCTS

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The article describes a method for obtaining carbon nanofibers (CNFs) based on humic acid from oxidized coal of the Maikuben basin and polycarlonitrile (PAN) by electrospinning in laboratory conditions. The value of the interelectrode voltage was 20-25 kV. The elemental composition was determined and the surface morphology of the studied sample was studied, the type of modification of the carbon fiber was revealed. As a result of energy dispersive X-ray spectroscopy and scanning electron microscopy (SEM), the chemical composition of the initial CNF (C-48.73%) and the diameter of carbon fibers, which ranged from 148.6 nm to 1.36 μm, were found. The processes of oxidation and carbonization of the obtained samples were also carried out. The elemental composition of carbon after oxidation and carbonization was 87.75 and 89.16%, respectively, the diameter of the fibers was 117.5 nm -1.03 microns. The results of Raman scattering of light (RS) of carbonized CNF showed the degree of graphitization - 23.97%, the ratio I (D) / I (G) = 0.7, I (G) / I (D) = 1.4. The resistance of this material was 27 ohms. On the basis of SEM patterns of CNFs based on humic acid and PAN, it was found that the structure of the sample after oxidation and carbonization retains the original fibrous structure. It was also found that the diameter of nanofibers decreases from 1 μm to 117.5 nm, which may be associated with the release of volatile and heterogeneous components of the original product and the formation of a more structural thin porous filament.

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“…Eventually, the value of CPE is much larger than that corresponding to the double layer. It was experimentally established that the impedance (associated with the constant phase element), Z C , representing double-layer charging depends on the frequency according to [32]:…”

Section: Electrochemical Impedance Spectroscopy (Eis) Studiesmentioning

confidence: 99%

Electrodeposited Metals at Conducting Polymer Electrodes. II: Study of the Oxidation of Methanol at Poly(3-methylthiophene) Modified with Pt–Pd Co-catalyst

et al. 2008

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The electrodeposition of sub-micro/nano-size Pt-Pd co-catalyst on conducting poly(3-methylthiophene) (PMT) films and the use of the resulting hybrid material for the oxidation of methanol are reported. Several factors affecting the electrocatalytic activity for this process were studied by cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS), namely, the polymer film thickness, and the catalyst amount/ratio. In addition, the effects of methanol concentration and the operating temperature were also investigated. Thermal gravimetric analysis (TGA) showed that the thermal stability of the polymer film increased by the incorporation of the metallic particles. Scanning electron micrographs (SEM) were obtained to identify the relative size of the metallic particles and their distribution. The size ranged between 3 lm and 500 nm. Energy dispersive X-rays analysis (EDAX) was performed to identify the composition of the metallic particles. It was found that the particle composed of Pt and Pd in ratio that is comparable to that present in the feed solution.

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Electrochemical impedance spectroscopic study of the intercalation of lithium and sodium ions into polyparaphenylene in carbonate-based electrolytes

Cited by 19 publications

References 25 publications

Electrosynthesis and electrochemical characterisation of phenazine polymers for application in biosensors

Electrosynthesis and electrochemical characterisation of phenazine polymers for application in biosensors

Synthesis of Carbon Nanofibers Based on Humic Acid and Polyacryonitrile by Electrospinning Method

Electrodeposited Metals at Conducting Polymer Electrodes. II: Study of the Oxidation of Methanol at Poly(3-methylthiophene) Modified with Pt–Pd Co-catalyst

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