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231225s2020 xx |||||o 00| ||eng c |
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|a 10.1002/adma.202000190
|2 doi
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|a pubmed25n1023.xml
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|a (DE-627)NLM307220362
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|a (NLM)32130749
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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 Song, Jin
|e verfasserin
|4 aut
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|a A High-Performance Li-Mn-O Li-rich Cathode Material with Rhombohedral Symmetry via Intralayer Li/Mn Disordering
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|c 2020
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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
|b cr
|2 rdacarrier
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|a Date Revised 30.09.2020
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2020 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
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|a The search for new high-performance and low-cost cathode materials for Li-ion batteries is a challenging issue in materials research. Commonly used cobalt- or nickel-based cathodes suffer from limited resources and safety problems that greatly restrict their large-scale application, especially for electric vehicles and large-scale energy storage. Here, a novel Li-Mn-O Li-rich cathode material with R 3 ¯ m symmetry is developed via intralayer Li/Mn disordering in the Mn-layer. Due to the special atomic arrangement and higher R 3 ¯ m symmetry with respect to the C2/m symmetry, the oxygen redox activity is modulated and the Li in the Li-layer is preferentially thermodynamically extracted from the crystal structure instead of Li in the Mn-layer. The as-obtained material delivers a reversible capacity of over 300 mAh g-1 at 25 mA g-1 and rate capability of up to 260 mAh g-1 at 250 mA g-1 within 2.0-4.8 V. The excellent performance is attributed to its highly structural reversibility, mitigation of Jahn-Teller distortion, lower bandgap, and faster Li-ion 2D channels during the lithium-ion de/intercalation process. This material is not only a promising cathode material candidate but also raises new possibilities for the design of low-cost and high-performance cathode materials
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|a Journal Article
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|a Li-Mn-O cathodes
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|a Li-ion batteries
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4 |
|a rhombohedral symmetry
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1 |
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|a Li, Biao
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Chen, Yuyang
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zuo, Yuxuan
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Ning, Fanghua
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Shang, Huaifang
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Feng, Guang
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Liu, Na
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Shen, Chongheng
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Ai, Xinping
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Xia, Dingguo
|e verfasserin
|4 aut
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| 773 |
0 |
8 |
|i Enthalten in
|t Advanced materials (Deerfield Beach, Fla.)
|d 1998
|g 32(2020), 16 vom: 22. Apr., Seite e2000190
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnas
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| 773 |
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|g volume:32
|g year:2020
|g number:16
|g day:22
|g month:04
|g pages:e2000190
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|u http://dx.doi.org/10.1002/adma.202000190
|3 Volltext
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