All-round ionic liquids for shuttle-free zinc-iodine battery
The practical implementation of aqueous zinc-iodine batteries (ZIBs) is hindered by the rampant Zn dendrites growth, parasite corrosion, and polyiodide shuttling. In this work, ionic liquid EMIM[OAc] is employed as an all-round solution to mitigate challenges on both the Zn anode and the iodine cath...
| 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/10356/173944 |
| _version_ | 1811687388958687232 |
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| author | Xiao, Tao Yang, Jin-Lin Zhang, Bao Wu, Jiawen Li, Jinliang Mai, Wenjie Fan, Hong Jin |
| author2 | School of Physical and Mathematical Sciences |
| author_facet | School of Physical and Mathematical Sciences Xiao, Tao Yang, Jin-Lin Zhang, Bao Wu, Jiawen Li, Jinliang Mai, Wenjie Fan, Hong Jin |
| author_sort | Xiao, Tao |
| collection | NTU |
| description | The practical implementation of aqueous zinc-iodine batteries (ZIBs) is hindered by the rampant Zn dendrites growth, parasite corrosion, and polyiodide shuttling. In this work, ionic liquid EMIM[OAc] is employed as an all-round solution to mitigate challenges on both the Zn anode and the iodine cathode side. First, the EMIM+ embedded lean-water inner Helmholtz plane (IHP) and inert solvation sheath modulated by OAc- effectively repels H2 O molecules away from the Zn anode surface. The preferential adsorption of EMIM+ on Zn metal facilitates uniform Zn nucleation via a steric hindrance effect. Second, EMIM+ can reduce the polyiodide shuttling by hindering the iodine dissolution and forming an EMIM+ -I3 - dominated phase. These effects holistically enhance the cycle life, which is manifested by both Zn || Zn symmetric cells and Zn-I2 full cells. ZIBs with EAc deliver a capacity decay rate of merely 0.01 ‰ per cycle after over 18,000 cycles at 4 A g-1 , and lower self-discharge and better calendar life than the ZIBs without ionic liquid EAc additive. |
| first_indexed | 2024-10-01T05:15:32Z |
| format | Journal Article |
| id | ntu-10356/173944 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T05:15:32Z |
| publishDate | 2024 |
| record_format | dspace |
| spelling | ntu-10356/1739442024-03-13T06:39:04Z All-round ionic liquids for shuttle-free zinc-iodine battery Xiao, Tao Yang, Jin-Lin Zhang, Bao Wu, Jiawen Li, Jinliang Mai, Wenjie Fan, Hong Jin School of Physical and Mathematical Sciences Physics Hydrogen evolution reaction Ionic liquids The practical implementation of aqueous zinc-iodine batteries (ZIBs) is hindered by the rampant Zn dendrites growth, parasite corrosion, and polyiodide shuttling. In this work, ionic liquid EMIM[OAc] is employed as an all-round solution to mitigate challenges on both the Zn anode and the iodine cathode side. First, the EMIM+ embedded lean-water inner Helmholtz plane (IHP) and inert solvation sheath modulated by OAc- effectively repels H2 O molecules away from the Zn anode surface. The preferential adsorption of EMIM+ on Zn metal facilitates uniform Zn nucleation via a steric hindrance effect. Second, EMIM+ can reduce the polyiodide shuttling by hindering the iodine dissolution and forming an EMIM+ -I3 - dominated phase. These effects holistically enhance the cycle life, which is manifested by both Zn || Zn symmetric cells and Zn-I2 full cells. ZIBs with EAc deliver a capacity decay rate of merely 0.01 ‰ per cycle after over 18,000 cycles at 4 A g-1 , and lower self-discharge and better calendar life than the ZIBs without ionic liquid EAc additive. Ministry of Education (MOE) Submitted/Accepted version T. X and H. J. F. acknowledge financial support from the Singapore Ministry of Education by Tier 2 (MOE−T2EP50121-0006). J.-L. Y. is thankful for the financial support from the China Scholarship Council (No. 202006210070). The authors appreciate the National Supercomputing Centre, Singapore (https://www.nscc.sg). J. W. acknowledges the research scholarship awarded by the Institute of Flexible Electronics Technology of Tsinghua, Zhejiang (IFET-THU), Nanyang Technological University (NTU), and Qiantang Science and Technology Innovation Center, China (QSTIC). We thank the financial support from the Ministry of Science and Technology of China Project (G2023199002L). T. X. and J.-L. Y contributed equally to this work. 2024-03-07T07:14:46Z 2024-03-07T07:14:46Z 2024 Journal Article Xiao, T., Yang, J., Zhang, B., Wu, J., Li, J., Mai, W. & Fan, H. J. (2024). All-round ionic liquids for shuttle-free zinc-iodine battery. Angewandte Chemie International Edition, 63(8), e202318470-. https://dx.doi.org/10.1002/anie.202318470 1433-7851 https://hdl.handle.net/10356/173944 10.1002/anie.202318470 38179860 2-s2.0-85182411719 8 63 e202318470 en MOE−T2EP50121-0006 Angewandte Chemie International Edition doi:10.21979/N9/RAXXHV © 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.202318470. application/pdf |
| spellingShingle | Physics Hydrogen evolution reaction Ionic liquids Xiao, Tao Yang, Jin-Lin Zhang, Bao Wu, Jiawen Li, Jinliang Mai, Wenjie Fan, Hong Jin All-round ionic liquids for shuttle-free zinc-iodine battery |
| title | All-round ionic liquids for shuttle-free zinc-iodine battery |
| title_full | All-round ionic liquids for shuttle-free zinc-iodine battery |
| title_fullStr | All-round ionic liquids for shuttle-free zinc-iodine battery |
| title_full_unstemmed | All-round ionic liquids for shuttle-free zinc-iodine battery |
| title_short | All-round ionic liquids for shuttle-free zinc-iodine battery |
| title_sort | all round ionic liquids for shuttle free zinc iodine battery |
| topic | Physics Hydrogen evolution reaction Ionic liquids |
| url | https://hdl.handle.net/10356/173944 |
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