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Electrodes, Electrolytes and Their Interfaces in Electrochemical Storage

A special issue of Molecules (ISSN 1420-3049). This special issue belongs to the section "Applied Chemistry".

Deadline for manuscript submissions: closed (10 May 2022) | Viewed by 3224

Special Issue Editor

Department of Chemistry, University of Tours, 37204 Tours, France
Interests: Li-ion and post-Lithium-ion batteries; supercapacitors; electrochemistry; electrolytes
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Today, electrochemical storage is used to power many portable devices, electric vehicles, and also used in stationary storage. Therefore, electrochemical storage is paving the way toward a sustainable and cleaner future. All rechargeable electrochemical systems are based on reversible processes occurring at electrodes/electrolyte interfaces, which may involve multiple/complex steps reaction that allows electricity generation or storage. Therefore, the combination of appropriate electrolytes/electrodes is highly desirable to achieve performing devices.

This Special Issue will focus on cathodes–anodes/electrolytes interfaces in  aqueous and no-aqueous electrochemical systems. We welcome all contributions that report on experimental and/or theoretical studies aiming for greater understanding and improvement of the interaction between electrodes and electrolytes. Potential topics include but are not limited to:

  • Electrodes/interfaces in meal-ion batteries (Li-ion, Na-ion, Ca-ion, etc.): formation, physical-chemical studies, theoretical studies, aging and impact on batteries performances;
  • Beyond liquid electrolytes: solid electrolytes and their interfaces in lithium and sodium-based batteries;
  • Electrolyte and intercalation reactions (anode and cathode materials);
  • New development in electrolytes for beyond Li-ion systems (Li-S, Li-air, redox flow batteries, etc.);
  • Advanced techniques for interfaces studies;
  • Advanced electrolytes/materials in supercapacitors.

Prof. Dr. Fouad Ghamouss
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. Molecules 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 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

  • batteries
  • supercapacitors
  • electrolytes
  • interfaces

Published Papers (1 paper)

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Research

14 pages, 23237 KiB  
Article
Influence of Electrolyte on the Electrode/Electrolyte Interface Formation on InSb Electrode in Mg-Ion Batteries
by Irshad Mohammad, Lucie Blondeau, Jocelyne Leroy, Hicham Khodja and Magali Gauthier
Molecules 2021, 26(18), 5721; https://0-doi-org.brum.beds.ac.uk/10.3390/molecules26185721 - 21 Sep 2021
Cited by 3 | Viewed by 2534
Abstract
Achieving the full potential of magnesium-ion batteries (MIBs) is still a challenge due to the lack of adequate electrodes or electrolytes. Grignard-based electrolytes show excellent Mg plating/stripping, but their incompatibility with oxide cathodes restricts their use. Conventional electrolytes like bis(trifluoromethanesulfonyl)imide ((Mg(TFSI)2) [...] Read more.
Achieving the full potential of magnesium-ion batteries (MIBs) is still a challenge due to the lack of adequate electrodes or electrolytes. Grignard-based electrolytes show excellent Mg plating/stripping, but their incompatibility with oxide cathodes restricts their use. Conventional electrolytes like bis(trifluoromethanesulfonyl)imide ((Mg(TFSI)2) solutions are incompatible with Mg metal, which hinders their application in high-energy Mg batteries. In this regard, alloys can be game changers. The insertion/extraction of Mg2+ in alloys is possible in conventional electrolytes, suggesting the absence of a passivation layer or the formation of a conductive surface layer. Yet, the role and influence of this layer on the alloys performance have been studied only scarcely. To evaluate the reactivity of alloys, we studied InSb as a model material. Ex situ X-ray photoelectron spectroscopy (XPS) and electrochemical impedance spectroscopy were used to investigate the surface behavior of InSb in both Grignard and conventional Mg(TFSI)2/DME electrolytes. For the Grignard electrolyte, we discovered an intrinsic instability of both solvent and salt against InSb. XPS showed the formation of a thick surface layer consisting of hydrocarbon species and degradation products from the solvent (THF) and salt (C2H5MgCl−(C2H5)2AlCl). On the contrary, this study highlighted the stability of InSb in Mg(TFSI)2 electrolyte. Full article
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