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231225s2022 xx |||||o 00| ||eng c |
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|a 10.1002/adma.202106565
|2 doi
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|a pubmed24n1122.xml
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|a (DE-627)NLM336628218
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|a (NLM)35130361
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|a DE-627
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|c DE-627
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|a eng
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|a He, Xin
|e verfasserin
|4 aut
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|a An MXene-Based Metal Anode with Stepped Sodiophilic Gradient Structure Enables a Large Current Density for Rechargeable Na-O2 Batteries
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|c 2022
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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
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|2 rdacarrier
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|a Date Revised 14.04.2022
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2022 Wiley-VCH GmbH.
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|a The metal anode is the pivotal component for advanced sodium-metal batteries such as Na-O2 batteries. Designing a 3D confinement scaffold is a promising strategy for constructing dendrite-free sodium-metal anodes; however, cycling stability at a large current density (>10 mA cm-2 ) is still difficult to realize. Herein, the design of new lightweight and fibrous hydroxylated Ti3 C2 (h-Ti3 C2 ) MXene based scaffolds with stepped sodiophilic gradient structure (h-M-SSG) is reported, and its thickness can be controlled (80-250 µm). The sodiophilic gradient structure (adjusted by h-Ti3 C2 ) can effectively induce sodium ions to preferentially deposit at the bottom of the scaffold, thus inhibiting dendrite growth. h-M-SSG/Na-based symmetrical batteries exhibit a low polarization voltage and long cycling life at a high current density (40 mA cm-2 ) and a high cut-off capacity (40 mAh cm-2 ). Moreover, a Na-O2 battery with an h-M-SSG/Na anode exhibits a low potential gap of 0.137 V after 45 cycles at 1000 mA g-1 and 1000 mAh g-1 . This deposition-regulation strategy would inspire the design of 3D scaffolds for high-performance sodium-metal-anode-based batteries
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|a Journal Article
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|a 3D MXene scaffolds
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|a Na-O2 battery
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|a dendrite-free Na anodes
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|a large current density
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4 |
|a stepped sodiophilic gradient
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1 |
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|a Ni, Youxuan
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Li, Yixin
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Sun, Haoxiang
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Lu, Yong
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Li, Haixia
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Yan, Zhenhua
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zhang, Kai
|e verfasserin
|4 aut
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| 700 |
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|a Chen, Jun
|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 34(2022), 15 vom: 30. Apr., Seite e2106565
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnns
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| 773 |
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|g volume:34
|g year:2022
|g number:15
|g day:30
|g month:04
|g pages:e2106565
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|u http://dx.doi.org/10.1002/adma.202106565
|3 Volltext
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