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231225s2018 xx |||||o 00| ||eng c |
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|a 10.1002/adma.201800884
|2 doi
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|a eng
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|a Sun, Zhaowei
|e verfasserin
|4 aut
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|a Robust Expandable Carbon Nanotube Scaffold for Ultrahigh-Capacity Lithium-Metal Anodes
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|c 2018
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|a Text
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|a ƒaComputermedien
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|a ƒa Online-Ressource
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|a Date Completed 21.08.2018
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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 © 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
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|a There has been a renewed interest in using lithium (Li) metal as an anode material for rechargeable batteries owing to its high theoretical capacity of 3860 mA h g-1 . Despite extensive research, modifications to effectively inhibit Li dendrite growth still result in decreased Li loading and Li utilization. As a result, real capacities are often lower than values expected, if the total mass of the electrode is taken into consideration. Herein, a lightweight yet mechanically robust carbon nanotube (CNT) paper is demonstrated as a freestanding framework to accommodate Li metal with a Li mass fraction of 80.7 wt%. The highly conductive network made of sp2-hybridized carbon effectively inhibits formation of Li dendrites and affords a favorable coulombic efficiency of >97.5%. Moreover, the Li/CNT electrode retains practical areal and gravimetric capacities of 10 mA h cm-2 and 2830 mA h g-1 (vs the mass of electrode), respectively, with 90.9% Li utilization for 1000 cycles at a current density of 10 mA cm-2 . It is demonstrated that the robust and expandable nature is a distinguishing feature of the CNT paper as compared to other 3D scaffolds, and is a key factor that leads to the improved electrochemical performance of the Li/CNT anodes
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|a Journal Article
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|a carbon nanotube paper
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|a lithium-metal anodes
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|a robust structure
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|a ultrahigh capacity
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|a Jin, Song
|e verfasserin
|4 aut
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|a Jin, Hongchang
|e verfasserin
|4 aut
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|a Du, Zhenzhen
|e verfasserin
|4 aut
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|a Zhu, Yanwu
|e verfasserin
|4 aut
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|a Cao, Anyuan
|e verfasserin
|4 aut
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|a Ji, Hengxing
|e verfasserin
|4 aut
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|a Wan, Li-Jun
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Advanced materials (Deerfield Beach, Fla.)
|d 1998
|g 30(2018), 32 vom: 17. Aug., Seite e1800884
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|x 1521-4095
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|g volume:30
|g year:2018
|g number:32
|g day:17
|g month:08
|g pages:e1800884
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|u http://dx.doi.org/10.1002/adma.201800884
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