Ultrafast self-assembly of supramolecular hydrogels toward novel flame-retardant separator for safe lithium ion battery
Copyright © 2023 Elsevier Inc. All rights reserved..
Traditional polyolefin separators for lithium-ion batteries (LIBs) often experience limited thermal stability and intrinsic flammability, resulting in great safety risks during their usage. Therefore, it is highly important to develop novel flame-retardant separators for safe LIBs with high performance. In this work, we report a flame-retardant separator derived from boron nitride (BN) aerogel with a high BET surface area of 1127.3 m2 g-1. The aerogel was pyrolyzed from a melamine-boric acid (MBA) supramolecular hydrogel, which was self-assembled at an ultrafast speed. The in-situ evolution details of the nucleation-growth process of the supramolecules could be observed in real-time using a polarizing microscope under ambient conditions. The BN aerogel was further composited with bacterial cellulose (BC) to form a BN/BC composite aerogel with excellent flame-retardant performance, electrolyte-wetting ability and high mechanical property. By using the BN/BC composite aerogel as the separator, the developed LIBs exhibited high specific discharge capacity of 146.5 mAh g-1 and excellent cyclic performance, maintaining 500 cycles with a capacity degradation of only 0.012% per cycle. The high-performance flame-retardant BN/BC composite aerogel represents a promising candidate for separators not only in LIBs but also in other flexible electronics.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2023 |
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| Erschienen: |
2023 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:649 |
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| Enthalten in: |
Journal of colloid and interface science - 649(2023) vom: 20. Nov., Seite 591-600 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Yang, Yunlong [VerfasserIn] |
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| Links: |
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| Themen: |
Boron nitride |
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| Anmerkungen: |
Date Revised 25.07.2023 published: Print-Electronic Citation Status PubMed-not-MEDLINE |
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| doi: |
10.1016/j.jcis.2023.06.058 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
NLM358658136 |
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| 500 | |a published: Print-Electronic | ||
| 500 | |a Citation Status PubMed-not-MEDLINE | ||
| 520 | |a Copyright © 2023 Elsevier Inc. All rights reserved. | ||
| 520 | |a Traditional polyolefin separators for lithium-ion batteries (LIBs) often experience limited thermal stability and intrinsic flammability, resulting in great safety risks during their usage. Therefore, it is highly important to develop novel flame-retardant separators for safe LIBs with high performance. In this work, we report a flame-retardant separator derived from boron nitride (BN) aerogel with a high BET surface area of 1127.3 m2 g-1. The aerogel was pyrolyzed from a melamine-boric acid (MBA) supramolecular hydrogel, which was self-assembled at an ultrafast speed. The in-situ evolution details of the nucleation-growth process of the supramolecules could be observed in real-time using a polarizing microscope under ambient conditions. The BN aerogel was further composited with bacterial cellulose (BC) to form a BN/BC composite aerogel with excellent flame-retardant performance, electrolyte-wetting ability and high mechanical property. By using the BN/BC composite aerogel as the separator, the developed LIBs exhibited high specific discharge capacity of 146.5 mAh g-1 and excellent cyclic performance, maintaining 500 cycles with a capacity degradation of only 0.012% per cycle. The high-performance flame-retardant BN/BC composite aerogel represents a promising candidate for separators not only in LIBs but also in other flexible electronics | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a Boron nitride | |
| 650 | 4 | |a Flame-retardant | |
| 650 | 4 | |a Lithium ion battery | |
| 650 | 4 | |a Separator | |
| 650 | 4 | |a Supramolecule | |
| 700 | 1 | |a Chen, Zilin |e verfasserin |4 aut | |
| 700 | 1 | |a Lv, Tian |e verfasserin |4 aut | |
| 700 | 1 | |a Dong, Keyi |e verfasserin |4 aut | |
| 700 | 1 | |a Liu, Yanan |e verfasserin |4 aut | |
| 700 | 1 | |a Qi, Yunlong |e verfasserin |4 aut | |
| 700 | 1 | |a Cao, Shaokui |e verfasserin |4 aut | |
| 700 | 1 | |a Chen, Tao |e verfasserin |4 aut | |
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