Electro-oxidation of aniline and electrochemical behaviour of the produced polyaniline film on carbon-fibre electrodes in aqueous methanolic solutions

Jannakoudakis, A.D.; Jannakoudakis, P. D.; Pagalos, N.; Θεοδωρίδου, Ε.

doi:10.1016/0013-4686(93)80290-g

Cited by 58 publications

(20 citation statements)

References 32 publications

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“…When n ϭ 1, the CPE is considered to be a pure capacitor.) Numerous efforts [9][10][11][12][13][14][15][16][17]23,24,33 have been made to fit data obtained for the conducting and insulating form of a PANI film to either a single, to two, or to even more individual equivalent circuits. Many ECs have been proposed in the literature, particularly for the reduced form of PANI, with some containing up to six circuit elements.…”

Section: Type I Pani Films Deposited On Au Electrodesmentioning

confidence: 99%

The Effect of Film Thickness and Growth Method on Polyaniline Film Properties

Dinh

Vanýsek

Birss

1999

J. Electrochem. Soc.

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There has been significant interest in the electrochemical properties of polyaniline (PANI) films on electrode surfaces, largely because of the many promising applications of PANI in electrochromic devices, 1,2 as supercapacitive materials, as intercalating electrodes in advanced batteries, 3,4 for electrocatalysis of certain reactions, [5][6][7] in microelectronic devices, 8 etc.The properties of PANI films have been extensively studied by many different methods. However, despite the numerous past studies of PANI films, there are still many remaining questions regarding their electrochemical growth mechanism, their structure (particularly at the nanometer scale), and even their electrical properties. Although the impedance technique has been employed quite frequently as a tool for investigating PANI film properties, 9-17 many of these past studies have focused on the characterization of a single film at different potentials, or of several films of different thickness, but grown by one technique. No single study has been directed at comparing the electrochemical properties of PANI films formed at different rates to different thicknesses at different substrates, etc. As a consequence, there is some uncertainty regarding the dependence of film properties on experimental variables. In fact, many past studies have focused more on the description of the impedance data without much emphasis on interpretation.Therefore, one of the key objectives of this work was to examine the PANI film impedance response over a wide range of potentials for films formed to various thicknesses while employing several different electrochemical growth conditions on Au and Pt substrates. The principal goal of these studies has been to obtain a better understanding of the growth and structural properties of these films from a careful variation of the experimental parameters within a single controlled study.In this paper, the electrochemical properties of PANI films, grown by two different methods (type I and type II films) to various thicknesses and studied by cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS), are examined systematically. The structural and interfacial properties of the two types of films are compared, for the first time, by tracking the rate of the hydrogen evolution reaction (HER) with time of PANI film growth. It is shown that type II films are more porous, both in the bulk of the film and at the base of film pores, and are more capacitive than type I films. Type II films also undergo structural changes during film growth, while type I films remain relatively uniform. This work is considered important in terms of providing knowledge regarding how the growth parameters affect PANI film properties and also insight into how to design PANI films with the desired structure, porosity, capacitance, and stability characteristics. ExperimentalCells and electrodes.-The details of the solutions and the instrumentation used for carrying out CV and ac impedance measurements have been described elsewhere. 18 Sta...

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Section: Type I Pani Films Deposited On Au Electrodesmentioning

confidence: 99%

The Effect of Film Thickness and Growth Method on Polyaniline Film Properties

Dinh

Vanýsek

Birss

1999

J. Electrochem. Soc.

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“…During the past few years, a large number of papers dedicated to the electrocatalytic properties of platinum group metals and their alloys incorporated into polymeric matrices have been published [11][12][13][14][15]. It has been shown that such modified electrodes with Pt microparticles exhibit a better catalytic effect than smooth platinum for the oxidation of organic fuels such as CH 3 OH [11,[16][17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Poly(o-aminophenol) film prepared in the presence of sodium dodecyl sulfate: Application for nickel ion dispersion and the electrocatalytic oxidation of methanol and ethylene glycol

Ojani

Raoof

Fathi

2009

Electrochimica Acta

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“…The very first attempts to achieve optimal conditions for the spinning of fibres from PAni were begun in the late 1980s. 11,55,56 A few years later Mattes et al pioneered the processing of PAni into fibre form through a dry-wet spinning process. 57 Yet to date, CPFs lack an inclusive published report which wraps the origins of their emergence, the fabrication methods and their developments from the beginning to recent time despite printed conducting polymers.…”

Section: Current Achievements In the Fabrication Of Icpsmentioning

confidence: 99%

Developments in conducting polymer fibres: from established spinning methods toward advanced applications

2016

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Conducting polymers have received increasing attention in both fundamental research and various fields of application in recent decades, ranging in use from biomaterials to renewable energy storage devices. Processing of conducting polymers into fibrillar structures through spinning has provided some unique capabilities to their final applications. Compared with non fibrillar forms, conducting polymer fibres are expected to display improved properties arising mainly from their low dimensions, well-oriented polymer chains, light weight and large surface area to volume ratio. Spinning methods have been employed effectively to produce technological conducting fibres from nanoscale to hundreds of micrometre sizes with controlled properties. This review considers the history, categories, the latest research and development, pristine and composite conducting polymer fibres and current/future applications of them while focus on spinning methods related to conducting polymer fibres. Inherently conducting polymers have received increasing attention in both fundamental research and various fields of application in recent decades, ranging in use from biomaterials to renewable energy storage devices. Processing of conducting polymers into fibrillar structures through spinning has provided some unique capabilities to their final applications. Compared with non fibrillar forms, conducting polymer fibres are expected to display improved properties arising mainly from their low dimensions, well-oriented polymer chains, light weight and large surface area to volume ratio. Spinning methods have been employed effectively to produce technological conducting fibres from nanoscale to hundreds of micrometre sizes with controlled properties. This review considers the history, categories, the latest research and development, pristine and composite conducting polymer fibres and current/future of applications of them while focus on spinning methods related to conducting polymer fibres. Disciplines Engineering | Physical Sciences and Mathematics

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Electro-oxidation of aniline and electrochemical behaviour of the produced polyaniline film on carbon-fibre electrodes in aqueous methanolic solutions

Cited by 58 publications

References 32 publications

The Effect of Film Thickness and Growth Method on Polyaniline Film Properties

The Effect of Film Thickness and Growth Method on Polyaniline Film Properties

Poly(o-aminophenol) film prepared in the presence of sodium dodecyl sulfate: Application for nickel ion dispersion and the electrocatalytic oxidation of methanol and ethylene glycol

Developments in conducting polymer fibres: from established spinning methods toward advanced applications

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