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231226s2023 xx |||||o 00| ||eng c |
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|a 10.1021/acs.chemmater.2c03834
|2 doi
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|a pubmed24n1194.xml
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|a eng
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|a McClelland, Innes
|e verfasserin
|4 aut
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|a Direct Observation of Dynamic Lithium Diffusion Behavior in Nickel-Rich, LiNi0.8Mn0.1Co0.1O2 (NMC811) Cathodes Using Operando Muon Spectroscopy
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|c 2023
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|a Text
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|a Date Revised 20.06.2023
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|a published: Electronic-eCollection
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|a Citation Status PubMed-not-MEDLINE
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|a © 2023 The Authors. Published by American Chemical Society.
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|a Ni-rich layered oxide cathode materials such as LiNi0.8Mn0.1Co0.1O2 (NMC811) are widely tipped as the next-generation cathodes for lithium-ion batteries. The NMC class offers high capacities but suffers an irreversible first cycle capacity loss, a result of slow Li+ diffusion kinetics at a low state of charge. Understanding the origin of these kinetic hindrances to Li+ mobility inside the cathode is vital to negate the first cycle capacity loss in future materials design. Here, we report on the development of operando muon spectroscopy (μSR) to probe the Å-length scale Li+ ion diffusion in NMC811 during its first cycle and how this can be compared to electrochemical impedance spectroscopy (EIS) and the galvanostatic intermittent titration technique (GITT). Volume-averaged muon implantation enables measurements that are largely unaffected by interface/surface effects, thus providing a specific characterization of the fundamental bulk properties to complement surface-dominated electrochemical methods. First cycle measurements show that the bulk Li+ mobility is less affected than the surface Li+ mobility at full depth of discharge, indicating that sluggish surface diffusion is the likely cause of first cycle irreversible capacity loss. Additionally, we demonstrate that trends in the nuclear field distribution width of the implanted muons during cycling correlate with those observed in differential capacity, suggesting the sensitivity of this μSR parameter to structural changes during cycling
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|a Journal Article
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|a Booth, Samuel G
|e verfasserin
|4 aut
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|a Anthonisamy, Nirmalesh N
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Middlemiss, Laurence A
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Pérez, Gabriel E
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Cussen, Edmund J
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Baker, Peter J
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Cussen, Serena A
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Chemistry of materials : a publication of the American Chemical Society
|d 1998
|g 35(2023), 11 vom: 13. Juni, Seite 4149-4158
|w (DE-627)NLM098194763
|x 0897-4756
|7 nnns
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| 773 |
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|g volume:35
|g year:2023
|g number:11
|g day:13
|g month:06
|g pages:4149-4158
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|u http://dx.doi.org/10.1021/acs.chemmater.2c03834
|3 Volltext
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