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231225s2020 xx |||||o 00| ||eng c |
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|a 10.1002/adma.202004632
|2 doi
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|a pubmed25n1058.xml
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|a (DE-627)NLM317533835
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|a (NLM)33185899
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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 Li, Guochang
|e verfasserin
|4 aut
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| 245 |
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|a Achieving Ultrahigh Volumetric Energy Storage by Compressing Nitrogen and Sulfur Dual-Doped Carbon Nanocages via Capillarity
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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 29.12.2020
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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 GmbH.
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|a High volumetric performance is a challenging issue for carbon-based electrical double-layer capacitors (EDLCs). Herein, collapsed N,S dual-doped carbon nanocages (cNS-CNC) are constructed by simple capillary compression, which eliminates the surplus meso- and macropores, leading to a much increased density only at the slight expense of specific surface area. The N,S dual-doping induces strong polarity of the carbon surface, and thus much improves the wettability and charge transfer. The synergism of the high density, large ion-accessible surface area, and fast charge transfer leads to state-of-the-art volumetric performance under the premise of high rate capability. At a current density of 50 A g-1 , the optimized cNS-CNC delivers a high volumetric capacitance of 243 and 199 F cm-3 in KOH and EMIMBF4 electrolyte, with high energy density of 7.9 and 93.4 Wh L-1 , respectively. A top-level stack volumetric energy density of 75.3 Wh L-1 (at power density of 0.7 kW L-1 ) and a maximal stack volumetric power density of 112 kW L-1 (at energy density of 18.8 Wh L-1 ) are achieved in EMIMBF4 , comparable to the lead-acid battery in energy density but better in power density with 2-3 orders. This study demonstrates an efficient strategy to design carbon-based materials for high-volumetric-performance EDLCs with wide practical applications
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|a Journal Article
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|a N
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|a S dual-doped carbon nanocages
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|a elctrical double-layer capacitors
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|a high density
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|a surface-accessibility
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| 650 |
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|a volumetric energy density
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| 700 |
1 |
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|a Mao, Kun
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Liu, Meng
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Yan, Minglei
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zhao, Jie
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zeng, Yu
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Yang, Lijun
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Wu, Qiang
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Wang, Xizhang
|e verfasserin
|4 aut
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| 700 |
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|a Hu, Zheng
|e verfasserin
|4 aut
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| 773 |
0 |
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|i Enthalten in
|t Advanced materials (Deerfield Beach, Fla.)
|d 1998
|g 32(2020), 52 vom: 13. Dez., Seite e2004632
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnas
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| 773 |
1 |
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|g volume:32
|g year:2020
|g number:52
|g day:13
|g month:12
|g pages:e2004632
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|u http://dx.doi.org/10.1002/adma.202004632
|3 Volltext
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