Journal article
First isolation of solvated MgCl plus species as the sole cations in electrolyte solutions for rechargeable Mg batteries
Electrochimica acta, v 463, 142869
20 Sep 2023
Abstract
Synthesis of complex magnesium cations in ethereal solutions, is receiving a lot of attention due to their potential utilization in rechargeable magnesium batteries (RMB). The simplest complex cation, namely, solvated MgCl+, was hypothesized and reported as the most important cation in nonaqueous magnesium electrolyte solutions chemistry. However, such ions have never been isolated as the only cationic species in ethereal solutions developed for RMB. In this study, we report on successful isolation of the pure electrolyte MgCl(THF)5+- PhAlCl3, and on the electrochemical behavior of it in ethereal solutions. The structure of this compound was proved by single-crystal X-ray diffraction, Raman, and NMR spectroscopies. The novel MgCl(THF)5PhAlCl3/THF electrolyte solutions exhibit reversible Mg deposition/dissolution processes with anodic stability up to 2.7 V. The application of electrochemical cleaning pre-treatment for these solutions enabled to profoundly increase the coulombic efficiency of their Mg deposition/dissolution processes. Examining Mg prototype batteries with Mg foil anodes, composite Mo6S8 Chevrel phase (CP) cathodes containing these solutions exhibited a viable battery performance, indicating that upon a further optimization, electrolyte solutions based on the complex MgCl(THF)5+- PhAlCl3 �electrolyte may be suitable for practical RMB.
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Details
- Title
- First isolation of solvated MgCl plus species as the sole cations in electrolyte solutions for rechargeable Mg batteries
- Creators
- Ananya Maddegalla - Bar-Ilan UniversityYogendra Kumar - Technion – Israel Institute of TechnologySankalpita Chakrabarty - Bar-Ilan UniversityYuri Glagovsky - Technion – Israel Institute of TechnologyBruria Schmerling - Bar-Ilan UniversityNatalia Fridman - Technion – Israel Institute of TechnologyMichal Afri - Bar-Ilan UniversityHagit Aviv - Bar-Ilan UniversityDoron Aurbach - Bar-Ilan UniversityAyan Mukherjee - Institute of Minerals and Materials TechnologyDmitry Bravo-Zhivotovskii - Technion – Israel Institute of TechnologyMalachi Noked - Bar-Ilan University
- Publication Details
- Electrochimica acta, v 463, 142869
- Publisher
- Elsevier
- Number of pages
- 9
- Grant note
- RJN/2020/000075 / Science and Engineering Research Board (SERB)
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Mechanical Engineering and Mechanics
- Web of Science ID
- WOS:001042760800001
- Scopus ID
- 2-s2.0-85165002746
- Other Identifier
- 991022004632504721
InCites Highlights
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Electrochemistry