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@INPROCEEDINGS{Ahrens:1021018,
author = {Ahrens, Lara and Meledina, Maria and Basak, Shibabrata and
Eichel, Rüdiger-A. and Mayer, Joachim},
title = {{U}nderstanding of the {D}egradation and {A}ging
{M}echanisms in {N}i-rich {NMC} at {N}anoscale},
reportid = {FZJ-2024-00478},
year = {2023},
abstract = {Ni-rich NMC (NixMnyCo1-x-yO2 with x > 0.8) has been a
promising candidate for cathode active materials (CAMs) in
Li-ion batteries (LIBs) [1,2]. Reducing the Cobalt content
in NMC cathodes leads to a more environment-friendly and
affordable material. Also, the specific capacity of Ni-rich
NMC is significantly increased compared to conventional NMC
material. However, the cycle stability is reduced. To
improve the lifetime of Ni-rich NMCs, it is important to
gain a deeper understanding of the degradation- and aging
mechanisms appearing during material synthesis and cycling.
Therefore, studies of the micro- and nanostructure are key
for tailoring material properties specifically, for instance
through doping or coating.Modern focused-ion-beam (FIB)
preparation allows cutting of extremely thin samples,
enabling high-resolution imaging. Figure 1 shows a lamella
of a polycrystalline Ni-rich NMC particle, which was
prepared by FIB and a corresponding HRSTEM image of a
layered structure. In addition to ex-situ experiments on the
atomic scale, in-situ experiments play a key role in
understanding degradation and aging mechanisms in LIBs
[3,4]. By applying voltage or temperature more realistic
scenarios can be represented. Therefore, we focus both on
ex-situ and on in-situ setups (Figure 2).},
month = {Feb},
date = {2023-02-26},
organization = {Microscopy Conference 2023, Dramstadt
(Fed Rep Germany), 26 Feb 2023 - 2 Mar
2023},
subtyp = {After Call},
cin = {IEK-9 / ER-C-2},
cid = {I:(DE-Juel1)IEK-9-20110218 / I:(DE-Juel1)ER-C-2-20170209},
pnm = {1223 - Batteries in Application (POF4-122)},
pid = {G:(DE-HGF)POF4-1223},
typ = {PUB:(DE-HGF)6},
url = {https://juser.fz-juelich.de/record/1021018},
}