Eutectic Crystallization Activates Solid‐State Zinc‐Ion Conduction
Abstract Solid‐state zinc (Zn) batteries offer a new candidate for emerging applications sensitive to volume, safety and cost. However, current solid polymeric or ceramic electrolyte structures remain poorly conductive for the divalent Zn2+, especially at room temperature. Constructing a heterogeneous interface which allows Zn2+ percolation is a viable option, but this is rarely involved in multivalent systems. Herein, we construct a solid Zn2+‐ion conductor by inducing crystallization of tailored eutectic liquids formed by organic Zn salts and bipolar ligands. High‐entropy eutectic‐networks weaken the ion‐association and form interfacial Zn2+‐percolated channels on the nucleator surfaces, resulting in a solid crystal with exceptional selectivity for Zn2+ transport ( t Zn2+=0.64) and appreciable Zn2+ conductivity (σ Zn2+=3.78×10−5 S cm−1 at 30 °C, over 2 orders of magnitude higher than conventional polymers), and finally enabling practical ambient‐temperature Zn/V2 O5 metal solid cells. This design principle leveraged by the eutectic solidification affords new insights on the multivalent solid electrochemistry suffering from slow ion migration..
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2022 |
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| Erschienen: |
2022 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:134 |
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| Enthalten in: |
Angewandte Chemie - 134(2022), 2 |
| Beteiligte Personen: |
Qiu, Huayu [VerfasserIn] |
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| BKL: |
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| Anmerkungen: |
© 2022 Wiley‐VCH GmbH |
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| Umfang: |
8 |
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| doi: |
10.1002/ange.202113086 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| 520 | |a Abstract Solid‐state zinc (Zn) batteries offer a new candidate for emerging applications sensitive to volume, safety and cost. However, current solid polymeric or ceramic electrolyte structures remain poorly conductive for the divalent Zn2+, especially at room temperature. Constructing a heterogeneous interface which allows Zn2+ percolation is a viable option, but this is rarely involved in multivalent systems. Herein, we construct a solid Zn2+‐ion conductor by inducing crystallization of tailored eutectic liquids formed by organic Zn salts and bipolar ligands. High‐entropy eutectic‐networks weaken the ion‐association and form interfacial Zn2+‐percolated channels on the nucleator surfaces, resulting in a solid crystal with exceptional selectivity for Zn2+ transport ( t Zn2+=0.64) and appreciable Zn2+ conductivity (σ Zn2+=3.78×10−5 S cm−1 at 30 °C, over 2 orders of magnitude higher than conventional polymers), and finally enabling practical ambient‐temperature Zn/V2 O5 metal solid cells. This design principle leveraged by the eutectic solidification affords new insights on the multivalent solid electrochemistry suffering from slow ion migration. | ||
| 700 | 1 | |a Hu, Rongxiang |4 aut | |
| 700 | 1 | |a Du, Xiaofan |4 aut | |
| 700 | 1 | |a Chen, Zhou |4 aut | |
| 700 | 1 | |a Zhao, Jingwen |4 aut | |
| 700 | 1 | |a Lu, Guoli |4 aut | |
| 700 | 1 | |a Jiang, Meifang |4 aut | |
| 700 | 1 | |a Kong, Qingyu |4 aut | |
| 700 | 1 | |a Yan, Yiyuan |4 aut | |
| 700 | 1 | |a Du, Junzhe |4 aut | |
| 700 | 1 | |a Zhou, Xinhong |4 aut | |
| 700 | 1 | |a Cui, Guanglei |4 aut | |
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