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Conducting Polymers, Composites and Polymer Blends
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Conducting Polymers, Composites and Polymer Blends

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Carbon Materials".

Deadline for manuscript submissions: closed (31 March 2021) | Viewed by 6681

Special Issue Editor

Prof. Dr. Mária Omastová

E-Mail Website1 Website2
Guest Editor
Polymer Institute, Slovak Academy of Sciences, Bratislava, Slovakia
Interests: intrinsically conducting polymers; ionically conducting polymers; conducting composites and hybrids; application of conducting polymeric materials

Special Issue Information

Dear Colleagues,

Conducting polymers have been systematically studied over forty years. Global research on conductive polymers has been largely stimulated by the rapid development of microelectronics over the past twenty years. Efforts to exploit every reasonable opportunity to obtain unconventional materials for electronic elements, and progressive technologies for their preparation, are a powerful impetus for intensive research on conductive polymers.

The conductivity of polymeric materials is caused by electrically charged particles, ions, protons, and electrons. Polymers in which electrons are the charge transfer elements are intrinsically conducting polymers, in which the electrical conductivity is a result of delocalized electrons along the polymer backbone, with polyaniline, polypyrrole, and PEDOT as prominent examples. Already, in 2000, Alan Heeger, Alan MacDiarmid, and Hideki Shirakawa were awarded by the Nobel Prize in Chemistry “for the discovery and development of conductive polymers”.

Proton-conducting polymers are extensively exploited in low-temperature fuel cells. Fuel cell stacks and systems are presently commercialized and in operation, e.g., in hydrogen-driven cars. Extensive research activities are seeking next generation polymer electrolyte membranes to replace the present market leader Nafion.

Trends in the past few years regarding the preparation of particles with nano-scale dimensions have been developed in  the area of conductive polymers. New types of nanoprticles in the shape of spheres, nanorods, and nanotubes have been studied because of their interesting properties and applications.

Conducting polymeric composites based on an insulating polymer matrix, with embedded conducting fillers, are applied as actuator materials in artificial muscles or (wave) energy-harvesting devices. Ionic conductivity, typically provided by salt ions dissolved in a soft but solid polymer matrix, is applied in, e.g., flexible electronics and in Li ion batteries.

Hybrids materials based on conducting polymers were developed and applied as conducting electrodes in various types of solar cells. 

This Special Issue encourages contributions of the newest trends in research and applications of conducting polymeric materials in various areas such as electrode materials in fuel cells and batteries,  in energy conversion, in flexible electronics, in supercapacitors, in materials for corrosion protection, in biomedical applications, and as sensors and actuators.

It is my pleasure to invite you to submit a manuscript for this Special Issue. Original research, in the form of full papers, short communications, and reviews, is welcome.

Prof. Mária Omastová
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Materials is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • intrinsically conducting polymers
  • ionically conducting polymers
  • proton conducting polymers
  • conducting polymeric composites and hybrids
  • applications of conducting polymeric materials

Published Papers (2 papers)

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Research

22 pages, 3777 KiB  
Article
Bio-Based Plasticized PVA Based Polymer Blend Electrolytes for Energy Storage EDLC Devices: Ion Transport Parameters and Electrochemical Properties
by Shujahadeen B. Aziz, Muaffaq M. Nofal, M. F. Z. Kadir, Elham M. A. Dannoun, Mohamad A. Brza, Jihad M. Hadi and Ranjdar M. Abdullah
Materials 2021, 14(8), 1994; https://doi.org/10.3390/ma14081994 - 16 Apr 2021
Cited by 31 | Viewed by 2675
Abstract
This report shows a simple solution cast methodology to prepare plasticized polyvinyl alcohol (PVA)/methylcellulose (MC)-ammonium iodide (NH4I) electrolyte at room temperature. The maximum conducting membrane has a conductivity of 3.21 × 10−3 S/cm. It is shown that the number density, [...] Read more.
This report shows a simple solution cast methodology to prepare plasticized polyvinyl alcohol (PVA)/methylcellulose (MC)-ammonium iodide (NH4I) electrolyte at room temperature. The maximum conducting membrane has a conductivity of 3.21 × 10−3 S/cm. It is shown that the number density, mobility and diffusion coefficient of ions are enhanced by increasing the glycerol. A number of electric and electrochemical properties of the electrolyte—impedance, dielectric properties, transference numbers, potential window, energy density, specific capacitance (Cs) and power density—were determined. From the determined electric and electrochemical properties, it is shown that PVA: MC-NH4I proton conducting polymer electrolyte (PE) is adequate for utilization in energy storage device (ESD). The decrease of charge transfer resistance with increasing plasticizer was observed from Bode plot. The analysis of dielectric properties has indicated that the plasticizer is a novel approach to increase the number of charge carriers. The electron and ion transference numbers were found. From the linear sweep voltammetry (LSV) response, the breakdown voltage of the electrolyte is determined. From Galvanostatic charge-discharge (GCD) measurement, the calculated Cs values are found to drop with increasing the number of cycles. The increment of internal resistance is shown by equivalent series resistance (ESR) plot. The energy and power density were studied over 250 cycles that results to the value of 5.38–3.59 Wh/kg and 757.58–347.22 W/kg, respectively. Full article
(This article belongs to the Special Issue Conducting Polymers, Composites and Polymer Blends)
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10 pages, 2337 KiB  
Article
Influence of Fiber Volume Content on Thermal Conductivity in Transverse and Fiber Direction of Carbon Fiber-Reinforced Epoxy Laminates
by Simon Bard, Florian Schönl, Martin Demleitner and Volker Altstädt
Materials 2019, 12(7), 1084; https://doi.org/10.3390/ma12071084 - 2 Apr 2019
Cited by 34 | Viewed by 3576
Abstract
Thermal conductivity is an important material property for thermo-mechanical calculations, as mechanical properties strongly depend on the temperature and heat distribution in the manufactured parts. Although several suggestions for approximation formulae have been made, existing experimental data are rare and are not comparable [...] Read more.
Thermal conductivity is an important material property for thermo-mechanical calculations, as mechanical properties strongly depend on the temperature and heat distribution in the manufactured parts. Although several suggestions for approximation formulae have been made, existing experimental data are rare and are not comparable due to different measurement methods. In addition, scarcely has the thermal conductivity in both the fiber direction and transverse direction been studied. The aim of the current research is to show the influence of carbon fiber volume content on the thermal conductivity of laminates. The values are then used to verify the micromechanical models used in the literature. A strong influence on the thermal conductivity could be determined. For the transverse thermal conductivity, the correlation was exponential; for the conductivity in the fiber direction, a linear correlation was found. Full article
(This article belongs to the Special Issue Conducting Polymers, Composites and Polymer Blends)
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