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Advances in Energy Storage and Conversion Devices Utilizing Ionic Liquid Electrolytes

A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "D1: Advanced Energy Materials".

Deadline for manuscript submissions: closed (21 March 2022) | Viewed by 4245

Special Issue Editors


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Guest Editor
Karlsruhe Institute of Technology, Helmholtz Institute Ulm, 89081 Ulm, Germany
Interests: ionic liquids; x-ray scattering; computational molecular modelling; (halogen-free) electrolytes; batteries; fuel-cells

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Guest Editor
Department of Chemistry, University of Turin, 10125 Turin, Italy
Interests: photovoltaic; dye-sensitized solar cells; perovskite solar cells; deep eutectic solvents; ionic liquids
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Guest Editor
School of Chemical Engineering and Technology, Hainan University, Haikou 570228, China
Interests: poly(ionic liquid)s; ionic liquids; liquid crystals; ion exchange membrane; self-assembly

Special Issue Information

Dear Colleagues,

Ionic liquids (ILs) are organic salts with melting points lower than their decomposition temperature. Being salts in the liquid state, they show attractive and tunable physical and chemical properties, such as negligible vapour pressure, modest ionic conductivity, low flammability, and wide electrochemical window.
In the last two decades, ILs have been exploited in almost any field of chemistry, industry, and engineering.

Throughout this collection, we aim at gathering a series of papers together focused on the most recent advances in the uses of ILs in energy conversion and storage electrochemical devices. The contributions will tackle (but not limited to) smart-design for task-specific applications, implementation as electrolytes for solar cells, proton-shuttling media in fuel-cells, solvation-specific solvent for multivalent ions in post-lithium batteries, optimization of SEI formation for lithium-ion batteries, structure-properties relationship in electrochemical performances. Both theoretical and experimental approaches are equally welcomed.

Dr. Alessandro Mariani
Dr. Matteo Bonomo
Dr. Xinpei Gao
Guest Editors

Manuscript Submission Information

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Keywords

  • Ionic Liquids
  • Batteries
  • Fuel-Cells
  • Photovoltaic Devices
  • Smart-Design

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Published Papers (1 paper)

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Research

16 pages, 3464 KiB  
Article
The Influence of the Nature of Redox-Active Moieties on the Properties of Redox-Active Ionic Liquids and on Their Use as Electrolyte for Supercapacitors
by Philipp S. Borchers, Patrick Gerlach, Yihan Liu, Martin D. Hager, Andrea Balducci and Ulrich S. Schubert
Energies 2021, 14(19), 6344; https://doi.org/10.3390/en14196344 - 4 Oct 2021
Cited by 6 | Viewed by 2866
Abstract
In this work, two new redox-active ionic liquids, one based on 2,2,6,6-tetramethylpiperidine-N-oxide and the other based on 4,4′-bipyridine, are synthesized and characterized. A ferrocene-based redox-active ionic liquid is used for referencing the results. All ionic liquids are formed via salt-metathesis from [...] Read more.
In this work, two new redox-active ionic liquids, one based on 2,2,6,6-tetramethylpiperidine-N-oxide and the other based on 4,4′-bipyridine, are synthesized and characterized. A ferrocene-based redox-active ionic liquid is used for referencing the results. All ionic liquids are formed via salt-metathesis from halogenate to bis(trifluoromethylsulfonyl)imide. Their fundamental thermal characteristics are assessed with differential scanning calorimetry. While the imidazolium ionic liquids show no melting point, the phase transition is well observable for the viologen-based ionic liquid. The properties of the neat redox-active ionic liquids and of binary mixtures containing these ionic liquids (0.1 m) and 1-butyl-1-methyl pyrrolidinium-bis(trifluoromethylsulfonyl)imide have been investigated. Finally, the use of these binary mixtures in combination with activated carbon-based electrodes has been considered in view of the use of these redox-active electrolytes in supercapacitors. Full article
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