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240902s2024 xx |||||o 00| ||eng c |
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|a 10.1002/adma.202408875
|2 doi
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|a pubmed24n1520.xml
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|a (DE-627)NLM376926821
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|a (NLM)39205513
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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 |
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|a Ren, Hengyu
|e verfasserin
|4 aut
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|a Densification of Cathode/Electrolyte Interphase to Enhance Reversibility of LiCoO2 at 4.65 V
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|c 2024
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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 29.08.2024
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|a published: Print-Electronic
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|a Citation Status Publisher
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|a © 2024 Wiley‐VCH GmbH.
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|a For LiCoO2 (LCO) operated beyond 4.55 V (vs Li/Li+), it usually suffers from severe surface degradation. Constructing a robust cathode/electrolyte interphase (CEI) is effective to alleviate the above issues, however, the correlated mechanisms still remain vague. Herein, a progressively reinforced CEI is realized via constructing Zr─O deposits (ZrO2 and Li2ZrO3) on LCO surface (i.e., Z-LCO). Upon cycle, these Zr─O deposits can promote the decomposition of LiPF6, and progressively convert to the highly dispersed Zr─O─F species. In particular, the chemical reaction between LiF and Zr─O─F species further leads to the densification of CEI, which greatly reinforces its toughness and conductivity. Combining the robust CEI and thin surface rock-salt layer of Z-LCO, several benefits are achieved, including stabilizing the surface lattice oxygen, facilitating the interface Li+ transport kinetics, and enhancing the reversibility of O3/H1-3 phase transition, etc. As a result, the Z-LCO||Li cells exhibit a high capacity retention of 84.2% after 1000 cycles in 3-4.65 V, 80.9% after 1500 cycles in 3-4.6 V, and a high rate capacity of 160 mAh g-1 at 16 C (1 C = 200 mA g-1). This work provides a new insight for developing advanced LCO cathodes
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|a Journal Article
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|a Li‐ion batteries
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|a Zr─O deposits
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|a cathode/electrolyte interphase
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|a high‐voltage LiCoO2
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|a interface reaction
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|a Hu, Jiaxuan
|e verfasserin
|4 aut
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1 |
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|a Ji, Haocheng
|e verfasserin
|4 aut
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1 |
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|a Huang, Yuxiang
|e verfasserin
|4 aut
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1 |
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|a Zhao, Wenguang
|e verfasserin
|4 aut
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1 |
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|a Huang, Weiyuan
|e verfasserin
|4 aut
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| 700 |
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|a Wang, Xiaohu
|e verfasserin
|4 aut
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| 700 |
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|a Yi, Haocong
|e verfasserin
|4 aut
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| 700 |
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|a Song, Yongli
|e verfasserin
|4 aut
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|a Liu, Jiajie
|e verfasserin
|4 aut
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1 |
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|a Liu, Tongchao
|e verfasserin
|4 aut
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| 700 |
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|a Liu, Ming
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zhao, Qinghe
|e verfasserin
|4 aut
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| 700 |
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|a Pan, Feng
|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 (2024) vom: 29. Aug., Seite e2408875
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnns
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| 773 |
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|g year:2024
|g day:29
|g month:08
|g pages:e2408875
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|u http://dx.doi.org/10.1002/adma.202408875
|3 Volltext
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