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241222s2024 xx |||||o 00| ||eng c |
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|a 10.1002/adma.202414207
|2 doi
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|a pubmed24n1639.xml
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|a (NLM)39707696
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|a DE-627
|b ger
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|e rakwb
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|a eng
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| 100 |
1 |
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|a Zheng, Mengting
|e verfasserin
|4 aut
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| 245 |
1 |
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|a Voltage-Induced Bromide Redox Enables Capacity Restoration of Fast-Charging Batteries
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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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| 338 |
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Revised 21.12.2024
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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 Fast-charging lithium-ion batteries (LIBs) are essential for electric vehicles (EVs) to compete with conventional gasoline ones in terms of charging viability, yet the aggressive capacity drop in fast-charging scenarios gives rise to concerns regarding durability and sustainability. Herein, it is clarified that for fast-charging batteries, the excessive lithium (Li) plating on graphite anode inevitably brings capacity fading, and the concurrent accumulation of Li2O-dominant passivation species that form dead Li is the main reason for their poor rechargeability. To refresh the passivated graphite, a voltage-induced activation mechanism is developed to leverage bromide (Br-/Br3 -) redox couple for Li2O and isolated Li0 activation in situ. Along with a tiny amount of lithium bromide (LiBr) added into the electrolyte, the cut-off voltage of activation processes is controlled to initiate and maximize the effectiveness of Br-/Br3 - redox couple. The capacity of degraded fast-charging cells can increase from lower than 30 to ≈118 mAh g-1 before and after the activation, respectively. Notably, the process is not one-off; a subsequent activation is feasible. For the same battery that suffered from another round of fast charging, this design still restores the reversible capacity to ≈100 mAh g-1. Such a voltage-mediated mechanism can effectively prolong the service life of practical fast-charging batteries
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4 |
|a Journal Article
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4 |
|a Br−/Br3− redox
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| 650 |
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4 |
|a capacity restoration
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| 650 |
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|a dead lithium
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| 650 |
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4 |
|a fast charging
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| 650 |
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4 |
|a practical batteries
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| 700 |
1 |
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|a Liu, Tiefeng
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Wu, Jiawei
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Tao, Xinyong
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Li, Zeheng
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zhang, Shanqing
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Lu, Jun
|e verfasserin
|4 aut
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| 773 |
0 |
8 |
|i Enthalten in
|t Advanced materials (Deerfield Beach, Fla.)
|d 1998
|g (2024) vom: 20. Dez., Seite e2414207
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnns
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| 773 |
1 |
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|g year:2024
|g day:20
|g month:12
|g pages:e2414207
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| 856 |
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|u http://dx.doi.org/10.1002/adma.202414207
|3 Volltext
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