Water-in-salt electrolytes made saltier by Gemini ionic liquids for highly efficient Li-ion batteries
Abstract The water-in-salt electrolytes have promoted aqueous Li-ion batteries to become one of the most promising candidates to overcome safety concerns/issues of traditional Li-ion batteries. A simple increase of Li-salt concentration in electrolytes can successfully expand the electrochemical sta...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2023-02-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-023-29387-1 |
| _version_ | 1811165931103059968 |
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| author | Aleksandar Tot Leiting Zhang Erik J. Berg Per H. Svensson Lars Kloo |
| author_facet | Aleksandar Tot Leiting Zhang Erik J. Berg Per H. Svensson Lars Kloo |
| author_sort | Aleksandar Tot |
| collection | DOAJ |
| description | Abstract The water-in-salt electrolytes have promoted aqueous Li-ion batteries to become one of the most promising candidates to overcome safety concerns/issues of traditional Li-ion batteries. A simple increase of Li-salt concentration in electrolytes can successfully expand the electrochemical stability window of aqueous electrolytes beyond 2 V. However, necessary stability improvements require an increase in complexity of the ternary electrolytes. Here, we have explored the effects of novel, Gemini-type ionic liquids (GILs) as a co-solvent systems in aqueous Li[TFSI] mixtures and investigated the transport properties of the resulting electrolytes, as well as their electrochemical performance. The devices containing pyrrolidinium-based GILs show superior cycling stability and promising specific capacity in the cells based on the commonly used electrode materials LTO (Li4Ti5O12) and LMO (LiMn2O4). |
| first_indexed | 2024-04-10T15:44:13Z |
| format | Article |
| id | doaj.art-7574b02c5b2a4130b58f01a48b1b491f |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-04-10T15:44:13Z |
| publishDate | 2023-02-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-7574b02c5b2a4130b58f01a48b1b491f2023-02-12T12:11:19ZengNature PortfolioScientific Reports2045-23222023-02-011311910.1038/s41598-023-29387-1Water-in-salt electrolytes made saltier by Gemini ionic liquids for highly efficient Li-ion batteriesAleksandar Tot0Leiting Zhang1Erik J. Berg2Per H. Svensson3Lars Kloo4Applied Physical Chemistry, Department of Chemistry, KTH Royal Institute of TechnologyDepartment of Chemistry – Ångström Laboratory, Uppsala UniversityDepartment of Chemistry – Ångström Laboratory, Uppsala UniversityChemical and Pharmaceutical Development, RISE Research Institutes of SwedenApplied Physical Chemistry, Department of Chemistry, KTH Royal Institute of TechnologyAbstract The water-in-salt electrolytes have promoted aqueous Li-ion batteries to become one of the most promising candidates to overcome safety concerns/issues of traditional Li-ion batteries. A simple increase of Li-salt concentration in electrolytes can successfully expand the electrochemical stability window of aqueous electrolytes beyond 2 V. However, necessary stability improvements require an increase in complexity of the ternary electrolytes. Here, we have explored the effects of novel, Gemini-type ionic liquids (GILs) as a co-solvent systems in aqueous Li[TFSI] mixtures and investigated the transport properties of the resulting electrolytes, as well as their electrochemical performance. The devices containing pyrrolidinium-based GILs show superior cycling stability and promising specific capacity in the cells based on the commonly used electrode materials LTO (Li4Ti5O12) and LMO (LiMn2O4).https://doi.org/10.1038/s41598-023-29387-1 |
| spellingShingle | Aleksandar Tot Leiting Zhang Erik J. Berg Per H. Svensson Lars Kloo Water-in-salt electrolytes made saltier by Gemini ionic liquids for highly efficient Li-ion batteries Scientific Reports |
| title | Water-in-salt electrolytes made saltier by Gemini ionic liquids for highly efficient Li-ion batteries |
| title_full | Water-in-salt electrolytes made saltier by Gemini ionic liquids for highly efficient Li-ion batteries |
| title_fullStr | Water-in-salt electrolytes made saltier by Gemini ionic liquids for highly efficient Li-ion batteries |
| title_full_unstemmed | Water-in-salt electrolytes made saltier by Gemini ionic liquids for highly efficient Li-ion batteries |
| title_short | Water-in-salt electrolytes made saltier by Gemini ionic liquids for highly efficient Li-ion batteries |
| title_sort | water in salt electrolytes made saltier by gemini ionic liquids for highly efficient li ion batteries |
| url | https://doi.org/10.1038/s41598-023-29387-1 |
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