Proton/Anion-Conducting Polymers for Energy Conversion Systems

A special issue of Polymers (ISSN 2073-4360). This special issue belongs to the section "Polymer Applications".

Deadline for manuscript submissions: closed (31 December 2021) | Viewed by 2931

Special Issue Editor


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Guest Editor
Forschungszentrum Jülich GmbH, Helmholtz Institute Erlangen-Nürnberg for Renewable Energy (IEK-11), Egerlandstraße 3, 91058 Erlangen, Germany
Interests: proton conducting polymer; hydroxide conducting polymer; manufacturing and application of ion exchange membranes in fuel cells; water electrolysis; batteries

Special Issue Information

Dear Colleagues,

The deployment of renewable energy is essential for battling climate change. However, the vulnerable supplies of renewable energy cannot replace incumbent fossil energy if they cannot be stored for use when, e.g., sunlight and wind are not available. A solution to this problem is to convert the excess renewable energy into hydrogen fuel, which can be stored, redistributed, and converted back to electrical power by fuel cells. Hydrogen can also be used as a feedstock for the chemical industry. The energy-to-hydrogen conversion is performed by water electrolysis. Proton/anion conducting polymers are used as proton/anion exchange membranes (PEM/AEM) in fuel cells and water electrolyzer stacks. The membrane electronically separates the cathode and anode while conducting protons/anions, enabling the circuit to be completed for system operation. While sulfonated tetrafluoroethylene based fluoropolymer-copolymer (Nafion) is currently the dominant compound for PEM application, other proton/ anion-conducting polymers are being researched.

This Special Issue will focus on the synthesis of novel proton/anion conducting polymers, membrane manufacturing methods, and their applications in PEM/AEM fuel cells and water electrolyzers. Papers on ion conducting mechanisms, membrane degradation, and additives for performing enhancement are also of interest. In addition, researches on the use of ion-conducting polymer as solid electrolyte or membranes for energy storage systems such as Li-ion batteries or redox-flow batteries are welcome.

Dr. Chuyen van Pham
Guest Editor

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Keywords

  • proton exchange membrane
  • anion exchange membrane
  • proton conducting polymer
  • anion conducting polymer
  • fuel cell
  • water electrolysis
  • lithium ion battery
  • redox flow battery
  • membrane degradation
  • additives
  • polymer synthesis
  • conducting polymer

Published Papers (1 paper)

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Research

19 pages, 3334 KiB  
Article
Plasticized Polymer Blend Electrolyte Based on Chitosan for Energy Storage Application: Structural, Circuit Modeling, Morphological and Electrochemical Properties
by M. H. Hamsan, Muaffaq M. Nofal, Shujahadeen B. Aziz, M. A. Brza, Elham M. A. Dannoun, Ary R. Murad, M. F. Z. Kadir and S. K. Muzakir
Polymers 2021, 13(8), 1233; https://0-doi-org.brum.beds.ac.uk/10.3390/polym13081233 - 11 Apr 2021
Cited by 15 | Viewed by 2342
Abstract
Chitosan (CS)-dextran (DN) biopolymer electrolytes doped with ammonium iodide (NH4I) and plasticized with glycerol (GL), then dispersed with Zn(II)-metal complex were fabricated for energy device application. The CS:DN:NH4I:Zn(II)-complex was plasticized with various amounts of GL and the impact of [...] Read more.
Chitosan (CS)-dextran (DN) biopolymer electrolytes doped with ammonium iodide (NH4I) and plasticized with glycerol (GL), then dispersed with Zn(II)-metal complex were fabricated for energy device application. The CS:DN:NH4I:Zn(II)-complex was plasticized with various amounts of GL and the impact of used metal complex and GL on the properties of the formed electrolyte were investigated.The electrochemical impedance spectroscopy (EIS) measurements have shown that the highest conductivity for the plasticized system was 3.44 × 10−4 S/cm. From the x-ray diffraction (XRD) measurements, the plasticized electrolyte with minimum degree of crystallinity has shown the maximum conductivity. The effect of (GL) plasticizer on the film morphology was studied using FESEM. It has been confirmed via transference number analysis (TNM) that the transport mechanism in the prepared electrolyte is predominantly ionic in nature with a high transference number of ion (ti)of 0.983. From a linear sweep voltammetry (LSV) study, the electrolyte was found to be electrochemically constant as the voltage sweeps linearly up to 1.25 V. The cyclic voltammetry (CV) curve covered most of the area of the current–potential plot with no redox peaks and the sweep rate was found to be affecting the capacitance. The electric double-layer capacitor (EDLC) has shown a great performance of specific capacitance (108.3 F/g), ESR(47.8 ohm), energy density (12.2 W/kg) and power density (1743.4 W/kg) for complete 100 cycles at a current density of 0.5 mA cm−2. Full article
(This article belongs to the Special Issue Proton/Anion-Conducting Polymers for Energy Conversion Systems)
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