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240606s2024 xx |||||o 00| ||eng c |
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|a 10.1002/adma.202405473
|2 doi
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|a pubmed25n1243.xml
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|a (NLM)38837833
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|a eng
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|a Liu, Tingting
|e verfasserin
|4 aut
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|a Aqueous Electrolyte With Weak Hydrogen Bonds for Four-Electron Zinc-Iodine Battery Operates in a Wide Temperature Range
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|c 2024
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|a Date Revised 08.08.2024
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2024 Wiley‐VCH GmbH.
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|a In the pursuit of high-performance energy storage systems, four-electron zinc-iodine aqueous batteries (4eZIBs) with successive I-/I2/I+ redox couples are appealing for their potential to deliver high energy density and resource abundance. However, susceptibility of positive valence I+ to hydrolysis and instability of Zn plating/stripping in conventional aqueous electrolyte pose significant challenges. In response, polyethylene glycol (PEG 200) is introduced as co-solvent in 2 m ZnCl2 aqueous solution to design a wide temperature electrolyte. Through a comprehensive investigation combining spectroscopic characterizations and theoretical simulations, it is elucidated that PEG disrupts the intrinsic strong H-bonds of water by global weak PEG-H2O interaction, which strengthens the O─H covalent bond of water and intensifies the coordination with Zn2+. This synergistic effect substantially reduces water activity to restrain the I+ hydrolysis, facilitating I-/I2/I+ redox kinetics, mitigating I3 - formation and smoothening Zn deposition. The 4eZIBs in the optimized hybrid electrolyte not only deliver superior cyclability with a low fading rate of 0.0009% per cycle over 20 000 cycles and a close-to-unit coulombic efficiency but also exhibit stable performance in a wide temperature range from 40 °C to -40 °C. This study offers valuable insights into the rational design of electrolytes for 4eZIBs
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|a Journal Article
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|a ICl hydrolysis
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|a successive I−/I2/I+ redox couples
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|a weak hydrogen bonds
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|a wide temperature range
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|a zinc–iodine battery
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|a Lei, Chengjun
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Wang, Huijian
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Li, Jinye
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Jiang, Pengjie
|e verfasserin
|4 aut
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|a He, Xin
|e verfasserin
|4 aut
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| 700 |
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|a Liang, Xiao
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Advanced materials (Deerfield Beach, Fla.)
|d 1998
|g 36(2024), 32 vom: 26. Aug., Seite e2405473
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnas
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| 773 |
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|g volume:36
|g year:2024
|g number:32
|g day:26
|g month:08
|g pages:e2405473
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|u http://dx.doi.org/10.1002/adma.202405473
|3 Volltext
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