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231225s2020 xx |||||o 00| ||eng c |
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|a 10.1002/adma.201907289
|2 doi
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|a pubmed24n1018.xml
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|a (DE-627)NLM305428284
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|a (NLM)31944440
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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| 100 |
1 |
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|a Yusran, Yusran
|e verfasserin
|4 aut
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| 245 |
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|a Exfoliated Mesoporous 2D Covalent Organic Frameworks for High-Rate Electrochemical Double-Layer Capacitors
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|c 2020
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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|a Date Revised 30.09.2020
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2020 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
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|a The electrochemical double-layer capacitors (EDLCs) are highly demanded electrical energy storage devices due to their high power density with thousands of cycle life compared with pseudocapacitors and batteries. Herein, a series of capacitor cells composed of exfoliated mesoporous 2D covalent organic frameworks (e-COFs) that are able to perform excellent double-layer charge storage is reported. The selected mesoporous 2D COFs possess eclipsed AA layer-stacking mode with 3.4 nm square-like open channels, favorable BET surface areas (up to 1170 m2 g-1 ), and high thermal and chemical stabilities. The COFs via the facile, scalable, and mild chemical exfoliation method are further exfoliated to produce thin-layer structure with average thickness of about 22 nm. The e-COF-based capacitor cells achieve high areal capacitance (5.46 mF cm-2 at 1,000 mV s-1 ), high gravimetric power (55 kW kg-1 ), and relatively low τ0 value (121 ms). More importantly, they perform nearly an ideal DL charge storage at high charge-discharge rate (up to 30 000 mV s-1 ) and maintain almost 100% capacitance stability even after 10 000 cycles. This study thus provides insights into the potential utilization of COF materials for EDLCs
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|a Journal Article
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|a chemical exfoliation
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|a covalent organic frameworks
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|a double-layer capacitors
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|a high charge-discharge rate
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1 |
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|a Li, Hui
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Guan, Xinyu
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Li, Daohao
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Tang, Lingxue
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Xue, Ming
|e verfasserin
|4 aut
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1 |
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|a Zhuang, Zhongbin
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Yan, Yushan
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Valtchev, Valentin
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Qiu, Shilun
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Fang, Qianrong
|e verfasserin
|4 aut
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| 773 |
0 |
8 |
|i Enthalten in
|t Advanced materials (Deerfield Beach, Fla.)
|d 1998
|g 32(2020), 8 vom: 20. Feb., Seite e1907289
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnns
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| 773 |
1 |
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|g volume:32
|g year:2020
|g number:8
|g day:20
|g month:02
|g pages:e1907289
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|u http://dx.doi.org/10.1002/adma.201907289
|3 Volltext
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