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Membranes
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Polymer Electrolyte for Energy Devices
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Polymer Electrolyte for Energy Devices

A special issue of Membranes (ISSN 2077-0375). This special issue belongs to the section "Membrane Processing and Engineering".

Deadline for manuscript submissions: closed (10 August 2022) | Viewed by 9441

Special Issue Editors

Dr. Faiz Ahmed

E-Mail Website
Guest Editor
Le Laboratoire d'Electrochimie et de Physicochimie des Matériaux et des Interfaces UMR5279 CNRS-GRENOBLE-INP-UDS-UJF Bat phelma,1130, University Grenoble Alpes 38402, Saint Martin d'heres CEDEX, France
Interests: li-ion battery; fuel cell (PEMFC); super-capacitor; bio-sensors; polymer synthesis
Dr. Mohammad Afsar Uddin

E-Mail Website1 Website2
Guest Editor
Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, 405 N. Mathews Ave, Urbana, IL 61801, USA
Interests: π-conjugated oligomer; polymer; polyelectrolytes; organic light-emitting diodes (OLEDs); organic photovoltaic cells (OPV); organic field-effect transistor (OFET); electrochromic devices; photodetectors; photocatalyst; rewritable paper; redox flow batteries; bioelectronics; biosensors
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

From the last few decades, fuel consumption and environment pollution have been key issues in the modern scientific research world. For this reason, researchers are giving focus to study in different sectors such as electric transportation, environmental friendly behavior, and factors of environmental pollution. Polymer electrolyte for Energy Devices (Battery, Fuel Cell, and Solar Cell, etc.), have been paid increasing attention in recent decades due to their high energy density, long cycle lives, and high efficiency.

This Special Issue on “Polymer Electrolyte for Energy Devices (Battery, Fuel Cell, and Solar Cell, etc.)” of the journal Membranes seeks contributions to assess the state-of-the-art and future developments in the research area of polymer electrolytes in high energy and safe energy storage device applications. Topics include, but are not limited to, novel polymer developments, polymer/ceramic composite electrolytes, manufacturing techniques, characterization, demonstration efforts, and industrial exploitation. Authors are invited to submit their latest results; both original papers and reviews are welcome.

We look forward to receiving your outstanding work for this Special Issue.

Dr. Faiz Ahmed
Dr. Mohammad Afsar Uddin
Guest Editors

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. Membranes is an international peer-reviewed open access monthly 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 2700 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

  • Polymer Electrolyte
  • Battery
  • Fuel Cell
  • Solar Cell
  • Composite Electrolyte
  • Efficency

Published Papers (3 papers)

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Research

12 pages, 1820 KiB  
Article
A Computer Simulation Study of Thermal and Mechanical Properties of Poly(Ionic Liquid)s
by Youngseon Shim, Munbo Shim and Dae Sin Kim
Membranes 2022, 12(5), 450; https://doi.org/10.3390/membranes12050450 - 21 Apr 2022
Viewed by 2170
Abstract
Thermal and mechanical properties of poly(ionic liquid)s (PILs), an epoxidized ionic liquid-amine network, are studied via molecular dynamics simulations. The poly(ionic liquid)s are designed with two different ionic liquid monomers, 3-[2-(Oxiran-2-yl)ethyl]-1-{4-[(2-oxiran-2-yl)ethoxy]phenyl}imidazolium (EIM2) and 1-{4-[2-(Oxiran-2-yl)ethyl]phenyl}-3-{4-[2-(oxiran-2-yl)ethoxy]benzyl}imidazolium (EIM1), each of which is networked with tris(2-aminoethyl)amine, paired [...] Read more.
Thermal and mechanical properties of poly(ionic liquid)s (PILs), an epoxidized ionic liquid-amine network, are studied via molecular dynamics simulations. The poly(ionic liquid)s are designed with two different ionic liquid monomers, 3-[2-(Oxiran-2-yl)ethyl]-1-{4-[(2-oxiran-2-yl)ethoxy]phenyl}imidazolium (EIM2) and 1-{4-[2-(Oxiran-2-yl)ethyl]phenyl}-3-{4-[2-(oxiran-2-yl)ethoxy]benzyl}imidazolium (EIM1), each of which is networked with tris(2-aminoethyl)amine, paired with different anions, bis(trifluoromethanesulfonyl)imide (TFSI−) and chloride (Cl−). We investigate how ionic liquid monomers with high ionic strength affect structures of the cross-linked polymer networks and their thermomechanical properties such as glass transition temperature (Tg) and elastic moduli, varying the degree of cross-linking. Strong electrostatic interactions between the cationic polymer backbone and anions build up their strong structures of which the strength depends on their molecular structures and anion size. As the anion size decreases from TFSI− to Cl−, both Tg and elastic moduli of the PIL increase due to stronger electrostatic interactions present between their ionic moieties, making it favorable for the PIL to organize with stronger bindings. Compared to the EIM2 monomer, the EIM1 monomers and TFSI− ions generate a PIL with higher Tg and elastic moduli. This attributes to the less flexible structure of the EIM1 monomer for the chain rotation, in which steric hindrance by ring moieties in the EIM1-based PIL enhances their structural rigidity. The π-π stacking structures between the rings are found to increase in EIM1-based PIL compared to the EIM2-based one, which becomes stronger with smaller Cl− ion rather than TFSI−. The effect of the degree of the cross-linking on thermal and mechanical properties is also examined. As the degree of cross-linking decreases from 100% to 60%, Tg also decreases by a factor of 10–20%, where the difference among the given PILs becomes decreased with a lower degree of cross-linking. Both the Young’s (E) and shear (G) moduli of all the PILs decrease with degree of cross-linking, which the reduction is more significant for the PIL generated with EIM2 monomers. Transport properties of anions in PILs are also studied. Anions are almost immobilized globally with very small structural fluctuations, in which Cl− presents lower diffusivity by a factor of ~2 compared to TFSI− due to their stronger binding to the cationic polymer backbone. Full article
(This article belongs to the Special Issue Polymer Electrolyte for Energy Devices)
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10 pages, 2260 KiB  
Article
Synthesis and Characterization of Gel Polymer Electrolyte Based on Epoxy Group via Cationic Ring-Open Polymerization for Lithium-Ion Battery
by Wei Zhang, Taewook Ryu, Sujin Yoon, Lei Jin, Giseok Jang, Wansu Bae, Whangi Kim, Faiz Ahmed and Hohyoun Jang
Membranes 2022, 12(4), 439; https://doi.org/10.3390/membranes12040439 - 18 Apr 2022
Cited by 9 | Viewed by 3181
Abstract
The polymer electrolytes are considered to be an alternative to liquid electrolytes for lithium-ion batteries because of their high thermal stability, flexibility, and wide applications. However, the polymer electrolytes have low ionic conductivity at room temperature due to the interfacial contact issue and [...] Read more.
The polymer electrolytes are considered to be an alternative to liquid electrolytes for lithium-ion batteries because of their high thermal stability, flexibility, and wide applications. However, the polymer electrolytes have low ionic conductivity at room temperature due to the interfacial contact issue and the growing of lithium dendrites between the electrolytes/electrodes. In this study, we prepared gel polymer electrolytes (GPEs) through an in situ thermal-induced cationic ring-opening strategy, using LiFSI as an initiator. As-synthesized GPEs were characterized with a series of technologies. The as-synthesized PNDGE 1.5 presented good thermal stability (up to 150 °C), low glass transition temperature (Tg < −40 °C), high ionic conductivity (>10−4 S/cm), and good interfacial contact with the cell components and comparable anodic oxidation voltage (4.0 V). In addition, PNGDE 1.5 exhibited a discharge capacity of 131 mAh/g after 50 cycles at 0.2 C and had a 92% level of coulombic efficiency. Herein, these results can contribute to developing of new polymer electrolytes and offer the possibility of good compatibility through the in situ technique for Li-ion batteries. Full article
(This article belongs to the Special Issue Polymer Electrolyte for Energy Devices)
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12 pages, 2695 KiB  
Article
Lithium Salt Catalyzed Ring-Opening Polymerized Solid-State Electrolyte with Comparable Ionic Conductivity and Better Interface Compatibility for Li-Ion Batteries
by Wei Zhang, Sujin Yoon, Lei Jin, Hyunmin Lim, Minhyuk Jeon, Hohyoun Jang, Faiz Ahmed and Whangi Kim
Membranes 2022, 12(3), 330; https://doi.org/10.3390/membranes12030330 - 16 Mar 2022
Cited by 5 | Viewed by 2991
Abstract
Rechargeable lithium-ion batteries have drawn extensive attention owing to increasing demands in applications from portable electronic devices to energy storage systems. In situ polymerization is considered one of the most promising approaches for enabling interfacial issues and improving compatibility between electrolytes and electrodes [...] Read more.
Rechargeable lithium-ion batteries have drawn extensive attention owing to increasing demands in applications from portable electronic devices to energy storage systems. In situ polymerization is considered one of the most promising approaches for enabling interfacial issues and improving compatibility between electrolytes and electrodes in batteries. Herein, we observed in situ thermally induced electrolytes based on an oxetane group with LiFSI as an initiator, and investigated structural characteristics, physicochemical properties, contacting interface, and electrochemical performances of as-prepared SPEs with a variety of technologies, such as FTIR, 1H-NMR, FE-SEM, EIS, LSV, and chronoamperometry. The as-prepared SPEs exhibited good thermal stability (stable up to 210 °C), lower activation energy, and high ionic conductivity (>0.1 mS/cm) at 30 °C. Specifically, SPE-2.5 displayed a comparable ionic conductivity (1.3 mS/cm at 80 °C), better interfacial compatibility, and a high Li-ion transference number. The SPE-2.5 electrolyte had comparable coulombic efficiency with a half-cell configuration at 0.1 C for 50 cycles. Obtained results could provide the possibility of high ionic conductivity and good compatibility through in situ polymerization for the development of Li-ion batteries. Full article
(This article belongs to the Special Issue Polymer Electrolyte for Energy Devices)
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