Novel Phosphonium-Based Ionic Liquid Electrolytes for Battery Applications
In this study, we address the fundamental question of the physicochemical and electrochemical properties of phosphonium-based ionic liquids containing the counter-ions bis(trifluoromethanesulfonyl)imide ([TFSI]<sup>−</sup>) and bis(fluorosulfonyl)imide ([FSI]<sup>−</sup>). To...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-07-01
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| Series: | Molecules |
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| Online Access: | https://www.mdpi.com/1420-3049/27/15/4729 |
| _version_ | 1797432797732798464 |
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| author | Andreas Hofmann Daniel Rauber Tzu-Ming Wang Rolf Hempelmann Christopher W. M. Kay Thomas Hanemann |
| author_facet | Andreas Hofmann Daniel Rauber Tzu-Ming Wang Rolf Hempelmann Christopher W. M. Kay Thomas Hanemann |
| author_sort | Andreas Hofmann |
| collection | DOAJ |
| description | In this study, we address the fundamental question of the physicochemical and electrochemical properties of phosphonium-based ionic liquids containing the counter-ions bis(trifluoromethanesulfonyl)imide ([TFSI]<sup>−</sup>) and bis(fluorosulfonyl)imide ([FSI]<sup>−</sup>). To clarify these structure–property as well as structure–activity relationships, trimethyl-based alkyl- and ether-containing phosphonium ILs were systematically synthesized, and their properties, namely density, flow characteristics, alkali metal compatibility, oxidative stability, aluminum corrosivity as well as their use in Li-ion cells were examined comprehensively. The variable moiety on the phosphonium cation exhibited a chain length of four and five, respectively. The properties were discussed as a function of the side chain, counter-ion and salt addition ([Li][TFSI] or [Li][FSI]). High stability coupled with good flow characteristics were found for the phosphonium IL [P1114][TFSI] and the mixture [P1114][TFSI] + [Li][TFSI], respectively. |
| first_indexed | 2024-03-09T10:06:52Z |
| format | Article |
| id | doaj.art-d2a22ca919c44a68becc298db8fc8cc2 |
| institution | Directory Open Access Journal |
| issn | 1420-3049 |
| language | English |
| last_indexed | 2024-03-09T10:06:52Z |
| publishDate | 2022-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Molecules |
| spelling | doaj.art-d2a22ca919c44a68becc298db8fc8cc22023-12-01T23:02:49ZengMDPI AGMolecules1420-30492022-07-012715472910.3390/molecules27154729Novel Phosphonium-Based Ionic Liquid Electrolytes for Battery ApplicationsAndreas Hofmann0Daniel Rauber1Tzu-Ming Wang2Rolf Hempelmann3Christopher W. M. Kay4Thomas Hanemann5Institute for Applied Materials, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, D-76344 Eggenstein-Leopoldshafen, GermanyDepartment of Chemistry, Saarland University, Campus B2.2, 66123 Saarbrücken, GermanyInstitute for Applied Materials, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, D-76344 Eggenstein-Leopoldshafen, GermanyDepartment of Chemistry, Saarland University, Campus B2.2, 66123 Saarbrücken, GermanyDepartment of Chemistry, Saarland University, Campus B2.2, 66123 Saarbrücken, GermanyInstitute for Applied Materials, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, D-76344 Eggenstein-Leopoldshafen, GermanyIn this study, we address the fundamental question of the physicochemical and electrochemical properties of phosphonium-based ionic liquids containing the counter-ions bis(trifluoromethanesulfonyl)imide ([TFSI]<sup>−</sup>) and bis(fluorosulfonyl)imide ([FSI]<sup>−</sup>). To clarify these structure–property as well as structure–activity relationships, trimethyl-based alkyl- and ether-containing phosphonium ILs were systematically synthesized, and their properties, namely density, flow characteristics, alkali metal compatibility, oxidative stability, aluminum corrosivity as well as their use in Li-ion cells were examined comprehensively. The variable moiety on the phosphonium cation exhibited a chain length of four and five, respectively. The properties were discussed as a function of the side chain, counter-ion and salt addition ([Li][TFSI] or [Li][FSI]). High stability coupled with good flow characteristics were found for the phosphonium IL [P1114][TFSI] and the mixture [P1114][TFSI] + [Li][TFSI], respectively.https://www.mdpi.com/1420-3049/27/15/4729ionic liquidphosphoniumelectrochemistrybatteries |
| spellingShingle | Andreas Hofmann Daniel Rauber Tzu-Ming Wang Rolf Hempelmann Christopher W. M. Kay Thomas Hanemann Novel Phosphonium-Based Ionic Liquid Electrolytes for Battery Applications Molecules ionic liquid phosphonium electrochemistry batteries |
| title | Novel Phosphonium-Based Ionic Liquid Electrolytes for Battery Applications |
| title_full | Novel Phosphonium-Based Ionic Liquid Electrolytes for Battery Applications |
| title_fullStr | Novel Phosphonium-Based Ionic Liquid Electrolytes for Battery Applications |
| title_full_unstemmed | Novel Phosphonium-Based Ionic Liquid Electrolytes for Battery Applications |
| title_short | Novel Phosphonium-Based Ionic Liquid Electrolytes for Battery Applications |
| title_sort | novel phosphonium based ionic liquid electrolytes for battery applications |
| topic | ionic liquid phosphonium electrochemistry batteries |
| url | https://www.mdpi.com/1420-3049/27/15/4729 |
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