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Okur F, Sheima Y, Zimmerli C, Zhang H, Helbling P, Fäh A, Mihail I, Tschudin J, Opris DM, Kovalenko MV, Kravchyk KV. Nitrile-functionalized Poly(siloxane) as Electrolytes for High-Energy-Density Solid-State Li Batteries. ChemSusChem 2024; 17:e202301285. [PMID: 38051667 DOI: 10.1002/cssc.202301285] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Revised: 11/30/2023] [Accepted: 12/04/2023] [Indexed: 12/07/2023]
Abstract
In the quest to replace liquid Li-ion electrolytes with safer and non-toxic solid counterparts for Li-ion batteries, polysiloxane polymers have attracted considerable attention as they offer low glass transition temperatures, stability with metallic lithium, and versatility in chemical functionalization of the backbone. Herein, we present the synthesis of Li-ion conductive polysiloxane-based polymers functionalized with 60 % nitrile groups per chain unit. The synthesis procedure is based on the reaction of poly-(dimethylsiloxane-co-methylvinylsiloxane) polymer with 2-cyanoethanethiol, followed by the addition of lithium bis (trifluoromethanesulfonyl) imide. The presented polysiloxane-based polymers exhibit exceptionally high ionic conductivity up to 0.375 mS cm-1 at 60 °C and Li+ ion transfer number of 0.73, one of the highest reported for polymer Li-ion conducting electrolytes. Their electrochemical performance was evaluated in both symmetrical and full-cell configurations to test the utility of synthesized polymers as electrolytes in Li-ion batteries.
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Affiliation(s)
- Faruk Okur
- Laboratory of Inorganic Chemistry, Department of Chemistry and Applied Biosciences, ETH, Zurich, CH-8093, Zürich, Switzerland
- Laboratory for Thin Films and Photovoltaics, Swiss Federal Laboratories for Materials Science & Technology, CH-8600, Dübendorf, Switzerland
| | - Yauhen Sheima
- Functional Polymers, Swiss Federal Laboratories for Materials Science & Technology, CH-8600, Dübendorf, Switzerland
| | - Can Zimmerli
- Laboratory of Inorganic Chemistry, Department of Chemistry and Applied Biosciences, ETH, Zurich, CH-8093, Zürich, Switzerland
- Laboratory for Thin Films and Photovoltaics, Swiss Federal Laboratories for Materials Science & Technology, CH-8600, Dübendorf, Switzerland
| | - Huanyu Zhang
- Laboratory of Inorganic Chemistry, Department of Chemistry and Applied Biosciences, ETH, Zurich, CH-8093, Zürich, Switzerland
- Laboratory for Thin Films and Photovoltaics, Swiss Federal Laboratories for Materials Science & Technology, CH-8600, Dübendorf, Switzerland
| | - Patrick Helbling
- Functional Polymers, Swiss Federal Laboratories for Materials Science & Technology, CH-8600, Dübendorf, Switzerland
| | - Ashling Fäh
- Laboratory of Inorganic Chemistry, Department of Chemistry and Applied Biosciences, ETH, Zurich, CH-8093, Zürich, Switzerland
- Laboratory for Thin Films and Photovoltaics, Swiss Federal Laboratories for Materials Science & Technology, CH-8600, Dübendorf, Switzerland
| | - Iacob Mihail
- Functional Polymers, Swiss Federal Laboratories for Materials Science & Technology, CH-8600, Dübendorf, Switzerland
| | - Jacqueline Tschudin
- Functional Polymers, Swiss Federal Laboratories for Materials Science & Technology, CH-8600, Dübendorf, Switzerland
| | - Dorina M Opris
- Functional Polymers, Swiss Federal Laboratories for Materials Science & Technology, CH-8600, Dübendorf, Switzerland
- Department of Materials, ETH, Zurich, CH-8092, Zürich, Switzerland
| | - Maksym V Kovalenko
- Laboratory of Inorganic Chemistry, Department of Chemistry and Applied Biosciences, ETH, Zurich, CH-8093, Zürich, Switzerland
- Laboratory for Thin Films and Photovoltaics, Swiss Federal Laboratories for Materials Science & Technology, CH-8600, Dübendorf, Switzerland
| | - Kostiantyn V Kravchyk
- Laboratory of Inorganic Chemistry, Department of Chemistry and Applied Biosciences, ETH, Zurich, CH-8093, Zürich, Switzerland
- Laboratory for Thin Films and Photovoltaics, Swiss Federal Laboratories for Materials Science & Technology, CH-8600, Dübendorf, Switzerland
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