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240627s2024 xx |||||o 00| ||eng c |
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|a 10.1002/adma.202405876
|2 doi
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|a pubmed24n1516.xml
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|a (DE-627)NLM374232946
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|a (NLM)38935407
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|a DE-627
|b ger
|c DE-627
|e rakwb
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| 041 |
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|a eng
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| 100 |
1 |
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|a Sun, Shuwei
|e verfasserin
|4 aut
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| 245 |
1 |
0 |
|a Magnetic Field-induced Disordered Phase of Spinel Oxides for High Battery Performance
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1 |
|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
|b cr
|2 rdacarrier
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|a Date Revised 28.08.2024
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2024 Wiley‐VCH GmbH.
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|a The disordered phase of spinel LiMn1.5Ni0.5O4 (LNMO) is more appealing as high-voltage cathode due to its superior electrochemical performance compared to its ordered counterpart. Various methods are developed to induce a phase transition. However, the resulting materials often suffer from capacity degradation due to the adverse influence of accompanying Mn3+ ions. This study presents the utilization of local magnetic fields generated by a magnetic Fe3O4 shell to induce a disordered phase transition in LNMO at lower temperature, transitioning it from an order state without significantly increasing the Mn3+ content. The pivotal role played by the local magnetic fields is evidenced through comparisons with samples with nonmagnetic Al2O3 shell, samples subjected to sole heat treatment, and samples heat-treated within magnetic fields. The key finding is that magnetic fields can initiate a radical pair mechanism, enabling the induction of order-disorder phase transition even at lower temperatures. The disordered spinal LNMO with a magnetic Fe3O4 shell exhibits excellent cycling stability and kinetic properties in electrochemical characterization as a result. This innovation not only unravels the intricate interplay between the disordered phase and Mn3+ content in the cathode spinel but also pioneers the use of magnetic field effects for manipulating material phases
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|a Journal Article
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|a cycling stability
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|a lithium‐ion battery
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4 |
|a local magnetic field
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| 650 |
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4 |
|a phase transition
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| 650 |
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4 |
|a radical pair mechanism
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| 700 |
1 |
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|a Li, Xiaoning
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zhang, Chu
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Wang, Xuefeng
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Wang, Jianli
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Wang, Chinwei
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Xu, Zhichuan J
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Cheng, Zhenxiang
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Bai, Ying
|e verfasserin
|4 aut
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| 773 |
0 |
8 |
|i Enthalten in
|t Advanced materials (Deerfield Beach, Fla.)
|d 1998
|g 36(2024), 35 vom: 01. Aug., Seite e2405876
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnns
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| 773 |
1 |
8 |
|g volume:36
|g year:2024
|g number:35
|g day:01
|g month:08
|g pages:e2405876
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| 856 |
4 |
0 |
|u http://dx.doi.org/10.1002/adma.202405876
|3 Volltext
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| 912 |
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|a GBV_USEFLAG_A
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| 912 |
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|a SYSFLAG_A
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| 912 |
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|a GBV_NLM
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| 912 |
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|a GBV_ILN_350
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| 951 |
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|a AR
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| 952 |
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|d 36
|j 2024
|e 35
|b 01
|c 08
|h e2405876
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