Fast Reaction Kinetics and Commendable Low-Temperature Adaptability of Zinc Batteries Enabled by Aprotic Water-Acetamide Symbiotic Solvation Sheath
© 2023 Wiley-VCH GmbH..
Although rechargeable aqueous zinc batteries are cost effectiveness, intrinsicly safe, and high activity, they are also known for bringing rampant hydrogen evolution reaction and corrosion. While eutectic electrolytes can effectively eliminate these issues, its high viscosity severely reduces the mobility of Zn2+ ions and exhibits poor temperature adaptability. Here, we infuse acetamide molecules with Lewis base and hydrogen bond donors into a solvated shell of Zn[(H2 O)6 ]2+ to create Zn(H2 O)3 (ace)(BF4 )2 . The viscosity of 1ace-1H2 O is 0.032 Pa s, significantly lower than that of 1ace-0H2 O (995.6 Pa s), which improves ionic conductivity (9.56 mS cm-1 ) and shows lower freezing point of -45 °C, as opposed to 1ace-0H2 O of 4.04 mS cm-1 and 12 °C, respectively. The acidity of 1ace-1H2 O is ≈2.8, higher than 0ace-1H2 O at ≈0.76, making side reactions less likely. Furthermore, benefiting from the ZnCO3 /ZnF2 -rich organic/inorganic solid electrolyte interface, the Zn || Zn cells cycle more than 1300 hours at 1 mA cm-2 , and the Zn || Cu operated over 1800 cycles with an average Coulomb efficiency of ≈99.8 %. The Zn || PANI cell cycled over 8500 cycles, with a specific capacity of 99.8 mAh g-1 at 5 A g-1 at room temperature, and operated at -40 °C with a capacity of 66.8 mAh g-1.
| Errataetall: |
ErratumIn: Angew Chem Int Ed Engl. 2024 Apr 18;:e202406762. - PMID 38634524 |
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| Medienart: |
E-Artikel |
| Erscheinungsjahr: |
2024 |
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| Erschienen: |
2024 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:63 |
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| Enthalten in: |
Angewandte Chemie (International ed. in English) - 63(2024), 8 vom: 19. Feb., Seite e202316841 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Wang, Shuyun [VerfasserIn] |
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| Links: |
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| Themen: |
Electrochemistry |
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| Anmerkungen: |
Date Revised 18.04.2024 published: Print-Electronic ErratumIn: Angew Chem Int Ed Engl. 2024 Apr 18;:e202406762. - PMID 38634524 Citation Status PubMed-not-MEDLINE |
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| doi: |
10.1002/anie.202316841 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| 500 | |a Citation Status PubMed-not-MEDLINE | ||
| 520 | |a © 2023 Wiley-VCH GmbH. | ||
| 520 | |a Although rechargeable aqueous zinc batteries are cost effectiveness, intrinsicly safe, and high activity, they are also known for bringing rampant hydrogen evolution reaction and corrosion. While eutectic electrolytes can effectively eliminate these issues, its high viscosity severely reduces the mobility of Zn2+ ions and exhibits poor temperature adaptability. Here, we infuse acetamide molecules with Lewis base and hydrogen bond donors into a solvated shell of Zn[(H2 O)6 ]2+ to create Zn(H2 O)3 (ace)(BF4 )2 . The viscosity of 1ace-1H2 O is 0.032 Pa s, significantly lower than that of 1ace-0H2 O (995.6 Pa s), which improves ionic conductivity (9.56 mS cm-1 ) and shows lower freezing point of -45 °C, as opposed to 1ace-0H2 O of 4.04 mS cm-1 and 12 °C, respectively. The acidity of 1ace-1H2 O is ≈2.8, higher than 0ace-1H2 O at ≈0.76, making side reactions less likely. Furthermore, benefiting from the ZnCO3 /ZnF2 -rich organic/inorganic solid electrolyte interface, the Zn || Zn cells cycle more than 1300 hours at 1 mA cm-2 , and the Zn || Cu operated over 1800 cycles with an average Coulomb efficiency of ≈99.8 %. The Zn || PANI cell cycled over 8500 cycles, with a specific capacity of 99.8 mAh g-1 at 5 A g-1 at room temperature, and operated at -40 °C with a capacity of 66.8 mAh g-1 | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a Electrochemistry | |
| 650 | 4 | |a Solid Electrolyte Interface | |
| 650 | 4 | |a Solvation Shell | |
| 650 | 4 | |a Zinc Battery | |
| 700 | 1 | |a Chen, Shengmei |e verfasserin |4 aut | |
| 700 | 1 | |a Ying, Yiran |e verfasserin |4 aut | |
| 700 | 1 | |a Li, Gang |e verfasserin |4 aut | |
| 700 | 1 | |a Wang, Haipeng |e verfasserin |4 aut | |
| 700 | 1 | |a Cheung, Ka Kiu Keith |e verfasserin |4 aut | |
| 700 | 1 | |a Meng, Qingjun |e verfasserin |4 aut | |
| 700 | 1 | |a Huang, Haitao |e verfasserin |4 aut | |
| 700 | 1 | |a Ma, Longtao |e verfasserin |4 aut | |
| 700 | 1 | |a Zapien, Juan Antonio |e verfasserin |4 aut | |
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