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231225s2021 xx |||||o 00| ||eng c |
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|a 10.1002/adma.202007428
|2 doi
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|a pubmed24n1070.xml
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|a (DE-627)NLM321041615
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|a (NLM)33543568
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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 Wu, Jingyi
|e verfasserin
|4 aut
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| 245 |
1 |
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|a Polycationic Polymer Layer for Air-Stable and Dendrite-Free Li Metal Anodes in Carbonate Electrolytes
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|c 2021
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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 24.03.2021
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2021 Wiley-VCH GmbH.
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|a The short cycle life and safety concerns caused by uncontrollable dendrite growth have severely hindered the commercialization of lithium metal batteries. Here, a polycationic and hydrophobic polymer protective layer fabricated by a scalable tape-casting method is developed to enable air-stable, dendrite-free, and highly efficient Li metal anodes. The polymeric cations of poly(diallyl dimethyl ammonium) (PDDA) provide an electrostatic shielding effect that unifies Li+ flux at the surface of the Li anode and promotes a homogeneous Li plating, while the bis(trifluoromethanesulfonyl)imide (TFSI) anions bring hydrophobic characteristics and improve moisture stability. The accumulated TFSI anions by the polycationic film also facilitate the formation of a stable solid electrolyte interphase (SEI). Steady Li plating/stripping in the carbonate electrolyte can be achieved under a high areal capacity of 10 mAh cm-2 for 700 h with Li utilization efficiency up to 51.6%. LiNi0.8 Mn0.1 Co0.1 O2 and LiFePO4 cells using the modified anode exhibit much improved electrochemical performance compared with the bare Li counterpart. Moreover, ultrasonic imaging shows no gas generation in the modified Li/LiFePO4 pouch cell. Mechanism investigation demonstrates the stable SEI and homogeneous Li deposition derived by the polycationic layer
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|a Journal Article
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|a air-stable and dendrite-free Li metal anodes
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|a electrostatic shielding
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|a lithium metal batteries
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| 650 |
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4 |
|a polycationic polymers
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1 |
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|a Rao, Zhixiang
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Liu, Xueting
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Shen, Yue
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Fang, Chun
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Yuan, Lixia
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Li, Zhen
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zhang, Wuxing
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Xie, Xiaolin
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Huang, Yunhui
|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 33(2021), 12 vom: 01. März, Seite e2007428
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnns
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| 773 |
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|g volume:33
|g year:2021
|g number:12
|g day:01
|g month:03
|g pages:e2007428
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|u http://dx.doi.org/10.1002/adma.202007428
|3 Volltext
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