Recent Advances in Ionogels

A special issue of Gels (ISSN 2310-2861). This special issue belongs to the section "Gel Chemistry and Physics".

Deadline for manuscript submissions: closed (28 February 2023) | Viewed by 1925

Special Issue Editors


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Guest Editor
Laboratoire de Physicochimie des Polymères et des Interfaces, Institut des Matériaux, CY Cergy Paris Université, Cergy-Pontoise, France
Interests: ionogels; polymer electrolytes; interpenetrating polymer networks; electrochemical devices; polymeric ionic liquids

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Guest Editor
Institut des Matériaux de Nantes Jean Rouxel, IMN, Nantes Université, CNRS, F-44000 Nantes, France
Interests: ionogels; hydrogels; supercapacitors; batteries; tissue engineering

Special Issue Information

Dear Colleagues,

Ionogels are biphasic materials consisting of an ionic liquid confined in a solid network. This solid network can be organic or inorganic. The greatest component of ionogels is an ionic liquid, and ionogels present a bicontinuous solid and liquid interface. They combine the properties of the ionic liquid and the solid confining network. While the former confers to the ionogel a dynamic close to that of a true liquid, with a negligible saturated vapor pressure, a high thermal stability, a high ionic conductivity and a large electrochemical window, the latter confers to the ionogel a solid state with potentially good mechanical properties. By a reasoned choice of the nature and of the respective proportions of their components, the properties of ionogels can be optimized. Moreover, the confinement of ionic liquids can lead to an advantageous modification of their properties, particularly their phase change temperature. These different properties make ionogels attractive for a wide range of applications where ionic transport, solid-state processing, extreme operating conditions (high temperature, low pressure, large electrochemical window, etc.) are desirable: energy storage devices (supercapacitors, batteries), sensors, actuators, ionics, drug delivery, etc.

This Special Issue entitled "Recent Advances in Ionogels" is devoted to recent developments in ionogels, from fundamental aspects to applications. Synthesis, characterization, modeling and applications will be discussed.

Dr. Giao T.M. Nguyen
Prof. Dr. Jean Le Bideau
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. Gels 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 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

  • ionogels
  • synthesis and characterization
  • structure–property relation
  • dynamic properties
  • modelling
  • applications

Published Papers (1 paper)

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Research

7 pages, 1550 KiB  
Communication
Task-Specific Phosphonium Iongels by Fast UV-Photopolymerization for Solid-State Sodium Metal Batteries
by Luca Porcarelli, Jorge L. Olmedo-Martínez, Preston Sutton, Vera Bocharova, Asier Fdz De Anastro, Montserrat Galceran, Alexei P. Sokolov, Patrick C. Howlett, Maria Forsyth and David Mecerreyes
Gels 2022, 8(11), 725; https://doi.org/10.3390/gels8110725 - 9 Nov 2022
Cited by 2 | Viewed by 1589
Abstract
Sodium metal batteries are an emerging technology that shows promise in terms of materials availability with respect to lithium batteries. Solid electrolytes are needed to tackle the safety issues related to sodium metal. In this work, a simple method to prepare a mechanically [...] Read more.
Sodium metal batteries are an emerging technology that shows promise in terms of materials availability with respect to lithium batteries. Solid electrolytes are needed to tackle the safety issues related to sodium metal. In this work, a simple method to prepare a mechanically robust and efficient soft solid electrolyte for sodium batteries is demonstrated. A task-specific iongel electrolyte was prepared by combining in a simple process the excellent performance of sodium metal electrodes of an ionic liquid electrolyte and the mechanical properties of polymers. The iongel was synthesized by fast (<1 min) UV photopolymerization of poly(ethylene glycol) diacrylate (PEGDA) in the presence of a saturated 42%mol solution of sodium bis(fluorosulfonyl)imide (NaFSI) in trimethyl iso-butyl phosphonium bis(fluorosulfonyl)imide (P111i4FSI). The resulting soft solid electrolytes showed high ionic conductivity at room temperature (≥10−3 S cm−1) and tunable storage modulus (104–107 Pa). Iongel with the best ionic conductivity and good mechanical properties (Iongel10) showed excellent battery performance: Na/iongel/NaFePO4 full cells delivered a high specific capacity of 140 mAh g−1 at 0.1 C and 120 mAh g−1 at 1 C with good capacity retention after 30 cycles. Full article
(This article belongs to the Special Issue Recent Advances in Ionogels)
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