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231225s2022 xx |||||o 00| ||eng c |
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|a 10.1002/adma.202108541
|2 doi
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|a pubmed24n1119.xml
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|a (DE-627)NLM335749747
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|a (NLM)35040212
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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 Xue, Liang
|e verfasserin
|4 aut
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| 245 |
1 |
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|a Stabilizing Layered Structure in Aqueous Electrolyte via Dynamic Water Intercalation/Deintercalation
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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 01.04.2022
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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 Aqueous lithium-ion batteries (ALIBs) with nonflammable feature attract great attention for large-scale energy storage. However, the layered cathode materials (such as LiCoO2 ) present serious capacity decay in ALIBs. The degradation mechanism of layered cathode materials in ALIBs is still not clear and an effective strategy to improve cycling stability remains a great challenge. In this work, the authors use LiCoO2 as a typical example to investigate its structural degradation in aqueous electrolytes. It is found that H+ insertion accelerated irreversible layered-to-spinel phase transition is the main reason causing structural degradation and fast capacity fading in LiCoO2 . Subsequently, Li-excess Li1+ t Co1- t O2- t with intermediate spin Co3+ is developed to mitigate H+ influence and the adverse phase transition in aqueous electrolyte. It is interesting to discover that reversible water intercalation/deintercalation occurs in the layered structure during charge/discharge, which effectively suppresses the layered-to-spinel phase transition with cycling. Benefiting from the stabilized layered structure, the Li-excess Li1.08 Co0.92 O1.92 shows a significantly improved cycling performance in the neutral aqueous electrolyte with a large specific capacity and excellent rate capability. This work provides a promising structural regulation strategy for the layered cathode materials, enabling their potential application in ALIBs
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|a Journal Article
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|a aqueous lithium-ion batteries
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4 |
|a degradation mechanism
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|a dynamic water intercalation/deintercalation
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| 650 |
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4 |
|a layered cathode materials
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| 650 |
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4 |
|a structural regulation
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| 700 |
1 |
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|a Zhang, Qinghua
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Huang, Yalan
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zhu, He
|e verfasserin
|4 aut
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1 |
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|a Xu, Lili
|e verfasserin
|4 aut
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1 |
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|a Guo, Shiying
|e verfasserin
|4 aut
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1 |
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|a Zhu, Xiaohui
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Liu, Hanghui
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Huang, Yin
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Huang, Jiangfeng
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Lu, Lude
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zhang, Shengli
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Gu, Lin
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Liu, Qi
|e verfasserin
|4 aut
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| 700 |
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|a Zhu, Junwu
|e verfasserin
|4 aut
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| 700 |
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|a Xia, Hui
|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), 13 vom: 30. Apr., Seite e2108541
|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:13
|g day:30
|g month:04
|g pages:e2108541
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|u http://dx.doi.org/10.1002/adma.202108541
|3 Volltext
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|d 34
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