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|a 10.1002/adma.202203783
|2 doi
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|a pubmed24n1139.xml
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|a (DE-627)NLM341791989
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|a (NLM)35657273
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|a eng
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|a Xiao, Jianhua
|e verfasserin
|4 aut
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|a Stable Solid Electrolyte Interphase In Situ Formed on Magnesium-Metal Anode by using a Perfluorinated Alkoxide-Based All-Magnesium Salt Electrolyte
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|c 2022
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|a Text
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Revised 27.07.2022
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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 Passivation of the Mg anode surface in conventional electrolytes constitutes a critical issue for practical Mg batteries. In this work, a perfluorinated tert-butoxide magnesium salt, Mg(pftb)2 , is codissolved with MgCl2 in tetrahydrofuran (THF) to form an all-magnesium salt electrolyte. Raman spectroscopy and density function theory calculation confirm that [Mg2 Cl3 ·6THF]+ [Mg(pftb)3 ]- is the main electrochemically active species of the electrolyte. The proper lowest unoccupied molecular orbital energy level of the [Mg(pftb)3 ]- anion enables in situ formation of a stable solid electrolyte interphase (SEI) on Mg anodes. A detailed analysis of the SEI reveals that its stability originates from a dual-layered organic/inorganic hybrid structure. Mg//Cu and Mg//Mg cells using the electrolyte achieve a high Coulombic efficiency of 99.7% over 3000 cycles, and low overpotentials over ultralong-cycle lives of 8100, 3000, and 1500 h at current densities of 0.5, 1.0, and 2.0 mA cm-2 , respectively. The robust SEI layer, once formed on a Mg electrode, is also shown highly effective in suppressing side-reactions in a TFSI- -containing electrolyte. A high Coulombic efficiency of 99.5% over 800 cycles is also demonstrated for a Mg//Mo6 S8 full cell, showing great promise of the SEI forming electrolyte in future Mg batteries
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|a Journal Article
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|a cycle life
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|a electrolytes
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|a magnesium batteries
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|a magnesium salts
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|a solid electrolyte interphase
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|a Zhang, Xinxin
|e verfasserin
|4 aut
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|a Fan, Haiyan
|e verfasserin
|4 aut
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|a Zhao, Yuxing
|e verfasserin
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|a Su, Yi
|e verfasserin
|4 aut
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|a Liu, Haowen
|e verfasserin
|4 aut
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|a Li, Xuanzhang
|e verfasserin
|4 aut
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|a Su, Yipeng
|e verfasserin
|4 aut
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|a Yuan, Hua
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|4 aut
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|a Pan, Ting
|e verfasserin
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|a Lin, Qiyuan
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|a Pan, Ludi
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|a Zhang, Yuegang
|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 34(2022), 30 vom: 21. Juli, Seite e2203783
|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:30
|g day:21
|g month:07
|g pages:e2203783
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|u http://dx.doi.org/10.1002/adma.202203783
|3 Volltext
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