Gelled Electrolyte Containing Phosphonium Ionic Liquids for Lithium-Ion Batteries
In this work, new gelled electrolytes were prepared based on a mixture containing phosphonium ionic liquid (IL) composed of trihexyl(tetradecyl)phosphonium cation combined with bis(trifluoromethane)sulfonimide [TFSI] counter anions and lithium salt, confined in a host network made from an epoxy prep...
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MDPI AG
2018-06-01
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| Series: | Nanomaterials |
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| Online Access: | http://www.mdpi.com/2079-4991/8/6/435 |
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| author | Mélody Leclère Laurent Bernard Sébastien Livi Michel Bardet Armel Guillermo Lionel Picard Jannick Duchet-Rumeau |
| author_facet | Mélody Leclère Laurent Bernard Sébastien Livi Michel Bardet Armel Guillermo Lionel Picard Jannick Duchet-Rumeau |
| author_sort | Mélody Leclère |
| collection | DOAJ |
| description | In this work, new gelled electrolytes were prepared based on a mixture containing phosphonium ionic liquid (IL) composed of trihexyl(tetradecyl)phosphonium cation combined with bis(trifluoromethane)sulfonimide [TFSI] counter anions and lithium salt, confined in a host network made from an epoxy prepolymer and amine hardener. We have demonstrated that the addition of electrolyte plays a key role on the kinetics of polymerization but also on the final properties of epoxy networks, especially thermal, thermo-mechanical, transport, and electrochemical properties. Thus, polymer electrolytes with excellent thermal stability (>300 °C) combined with good thermo-mechanical properties have been prepared. In addition, an ionic conductivity of 0.13 Ms·cm−1 at 100 °C was reached. Its electrochemical stability was 3.95 V vs. Li0/Li+ and the assembled cell consisting in Li|LiFePO4 exhibited stable cycle properties even after 30 cycles. These results highlight a promising gelled electrolyte for future lithium ion batteries. |
| first_indexed | 2024-12-10T18:46:31Z |
| format | Article |
| id | doaj.art-0c0f65a105714013ab45acedadb9b921 |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-12-10T18:46:31Z |
| publishDate | 2018-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-0c0f65a105714013ab45acedadb9b9212022-12-22T01:37:29ZengMDPI AGNanomaterials2079-49912018-06-018643510.3390/nano8060435nano8060435Gelled Electrolyte Containing Phosphonium Ionic Liquids for Lithium-Ion BatteriesMélody Leclère0Laurent Bernard1Sébastien Livi2Michel Bardet3Armel Guillermo4Lionel Picard5Jannick Duchet-Rumeau6Université de Lyon, F-69003, Lyon, France, INSA Lyon, CNRS, UMR 5223, Ingénierie des Matériaux Polymères, F-69621 Villeurbanne, FranceUniversité Grenoble Alpes, CEA-Grenoble, LITEN/DEHT/SCGE/LGI, 17, F-38000 Grenoble, FranceUniversité de Lyon, F-69003, Lyon, France, INSA Lyon, CNRS, UMR 5223, Ingénierie des Matériaux Polymères, F-69621 Villeurbanne, FranceUniversité Grenoble Alpes, CEA-Grenoble, INAC/SCIB/LRM, F-38000 Grenoble, FranceUniversité Grenoble Alpes, CEA-Grenoble, LITEN/DEHT/SCGE/LGI, 17, F-38000 Grenoble, FranceUniversité Grenoble Alpes, CEA-Grenoble, LITEN/DEHT/SCGE/LGI, 17, F-38000 Grenoble, FranceUniversité de Lyon, F-69003, Lyon, France, INSA Lyon, CNRS, UMR 5223, Ingénierie des Matériaux Polymères, F-69621 Villeurbanne, FranceIn this work, new gelled electrolytes were prepared based on a mixture containing phosphonium ionic liquid (IL) composed of trihexyl(tetradecyl)phosphonium cation combined with bis(trifluoromethane)sulfonimide [TFSI] counter anions and lithium salt, confined in a host network made from an epoxy prepolymer and amine hardener. We have demonstrated that the addition of electrolyte plays a key role on the kinetics of polymerization but also on the final properties of epoxy networks, especially thermal, thermo-mechanical, transport, and electrochemical properties. Thus, polymer electrolytes with excellent thermal stability (>300 °C) combined with good thermo-mechanical properties have been prepared. In addition, an ionic conductivity of 0.13 Ms·cm−1 at 100 °C was reached. Its electrochemical stability was 3.95 V vs. Li0/Li+ and the assembled cell consisting in Li|LiFePO4 exhibited stable cycle properties even after 30 cycles. These results highlight a promising gelled electrolyte for future lithium ion batteries.http://www.mdpi.com/2079-4991/8/6/435ionic liquidsthermosetsLithium saltselectrolytes |
| spellingShingle | Mélody Leclère Laurent Bernard Sébastien Livi Michel Bardet Armel Guillermo Lionel Picard Jannick Duchet-Rumeau Gelled Electrolyte Containing Phosphonium Ionic Liquids for Lithium-Ion Batteries Nanomaterials ionic liquids thermosets Lithium salts electrolytes |
| title | Gelled Electrolyte Containing Phosphonium Ionic Liquids for Lithium-Ion Batteries |
| title_full | Gelled Electrolyte Containing Phosphonium Ionic Liquids for Lithium-Ion Batteries |
| title_fullStr | Gelled Electrolyte Containing Phosphonium Ionic Liquids for Lithium-Ion Batteries |
| title_full_unstemmed | Gelled Electrolyte Containing Phosphonium Ionic Liquids for Lithium-Ion Batteries |
| title_short | Gelled Electrolyte Containing Phosphonium Ionic Liquids for Lithium-Ion Batteries |
| title_sort | gelled electrolyte containing phosphonium ionic liquids for lithium ion batteries |
| topic | ionic liquids thermosets Lithium salts electrolytes |
| url | http://www.mdpi.com/2079-4991/8/6/435 |
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