Hygroscopic solutes enable non-van der Waals electrolytes for fire-tolerant dual-air batteries
Thermal safety issues of batteries have hindered their large-scale applications. Nonflammable electrolytes improved safety but solvent evaporation above 100 °C limited thermal tolerance, lacking reliability. Herein, fire-tolerant metal-air batteries were realized by introducing solute-in-air electro...
| Main Authors: | , , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2024
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/174635 |
| _version_ | 1826110108804841472 |
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| author | Xia, Huarong Cao, Shengkai Lv, Zhisheng Wei, Jiaqi Yuan, Song Feng, Xue Chen, Xiaodong |
| author2 | School of Materials Science and Engineering |
| author_facet | School of Materials Science and Engineering Xia, Huarong Cao, Shengkai Lv, Zhisheng Wei, Jiaqi Yuan, Song Feng, Xue Chen, Xiaodong |
| author_sort | Xia, Huarong |
| collection | NTU |
| description | Thermal safety issues of batteries have hindered their large-scale applications. Nonflammable electrolytes improved safety but solvent evaporation above 100 °C limited thermal tolerance, lacking reliability. Herein, fire-tolerant metal-air batteries were realized by introducing solute-in-air electrolytes whose hygroscopic solutes could spontaneously reabsorb the evaporated water solvent. Using Zn/CaCl2 -in-air/carbon batteries as a proof-of-concept, they failed upon burning at 631.8 °C but self-recovered then by reabsorbing water from the air at room temperature. Different from conventional aqueous electrolytes whose irreversible thermal transformation is determined by the boiling points of solvents, solute-in-air electrolytes make this transformation determined by the much higher decomposition temperature of solutes. It was found that stronger intramolecular bonds instead of intermolecular (van der Waals) interactions were strongly correlated to ultra-high tolerance temperatures of our solute-in-air electrolytes, inspiring a concept of non-van der Waals electrolytes. Our study would improve the understanding of the thermal properties of electrolytes, guide the design of solute-in-air electrolytes, and enhance battery safety. |
| first_indexed | 2024-10-01T02:29:24Z |
| format | Journal Article |
| id | ntu-10356/174635 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T02:29:24Z |
| publishDate | 2024 |
| record_format | dspace |
| spelling | ntu-10356/1746352024-04-05T15:47:10Z Hygroscopic solutes enable non-van der Waals electrolytes for fire-tolerant dual-air batteries Xia, Huarong Cao, Shengkai Lv, Zhisheng Wei, Jiaqi Yuan, Song Feng, Xue Chen, Xiaodong School of Materials Science and Engineering Institute of Materials Research and Engineering, A*STAR Tsinghua University Innovative Center for Flexible Devices (iFLEX) Institute for Digital Analytics and Science (IDMxS) Chemistry Battery Electrolyte Temperature Safety Energy Hygroscopic Thermal safety issues of batteries have hindered their large-scale applications. Nonflammable electrolytes improved safety but solvent evaporation above 100 °C limited thermal tolerance, lacking reliability. Herein, fire-tolerant metal-air batteries were realized by introducing solute-in-air electrolytes whose hygroscopic solutes could spontaneously reabsorb the evaporated water solvent. Using Zn/CaCl2 -in-air/carbon batteries as a proof-of-concept, they failed upon burning at 631.8 °C but self-recovered then by reabsorbing water from the air at room temperature. Different from conventional aqueous electrolytes whose irreversible thermal transformation is determined by the boiling points of solvents, solute-in-air electrolytes make this transformation determined by the much higher decomposition temperature of solutes. It was found that stronger intramolecular bonds instead of intermolecular (van der Waals) interactions were strongly correlated to ultra-high tolerance temperatures of our solute-in-air electrolytes, inspiring a concept of non-van der Waals electrolytes. Our study would improve the understanding of the thermal properties of electrolytes, guide the design of solute-in-air electrolytes, and enhance battery safety. National Research Foundation (NRF) Submitted/Accepted version This research is supported by grants from the National Research Foundation, Prime Minister’s Office, Singapore under its Campus of Research Excellence and Technological Enterprise (CREATE) programme and Singapore Hybrid-Integrated Next-Generation μ-Electronics (SHINE) programme. 2024-04-05T06:31:13Z 2024-04-05T06:31:13Z 2024 Journal Article Xia, H., Cao, S., Lv, Z., Wei, J., Yuan, S., Feng, X. & Chen, X. (2024). Hygroscopic solutes enable non-van der Waals electrolytes for fire-tolerant dual-air batteries. Angewandte Chemie International Edition, 63(12), e202318369-. https://dx.doi.org/10.1002/anie.202318369 1433-7851 https://hdl.handle.net/10356/174635 10.1002/anie.202318369 38179853 2-s2.0-85182838869 12 63 e202318369 en CREATE programme SHINE programme Angewandte Chemie International Edition © 2024 Wiley-VCHGmbH. All rights reserved. This article may be downloaded for personal use only. Any other use requires prior permission of the copyright holder. The Version of Record is available online at http://doi.org/10.1002/anie.202318369. application/pdf |
| spellingShingle | Chemistry Battery Electrolyte Temperature Safety Energy Hygroscopic Xia, Huarong Cao, Shengkai Lv, Zhisheng Wei, Jiaqi Yuan, Song Feng, Xue Chen, Xiaodong Hygroscopic solutes enable non-van der Waals electrolytes for fire-tolerant dual-air batteries |
| title | Hygroscopic solutes enable non-van der Waals electrolytes for fire-tolerant dual-air batteries |
| title_full | Hygroscopic solutes enable non-van der Waals electrolytes for fire-tolerant dual-air batteries |
| title_fullStr | Hygroscopic solutes enable non-van der Waals electrolytes for fire-tolerant dual-air batteries |
| title_full_unstemmed | Hygroscopic solutes enable non-van der Waals electrolytes for fire-tolerant dual-air batteries |
| title_short | Hygroscopic solutes enable non-van der Waals electrolytes for fire-tolerant dual-air batteries |
| title_sort | hygroscopic solutes enable non van der waals electrolytes for fire tolerant dual air batteries |
| topic | Chemistry Battery Electrolyte Temperature Safety Energy Hygroscopic |
| url | https://hdl.handle.net/10356/174635 |
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