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@ARTICLE{Li:863003,
author = {Li, Dongjiang and Li, Hu and Danilov, Dmitri and Gao, Lu
and Chen, Xiaoxuan and Zhang, Zhongru and Zhou, Jiang and
Eichel, Rüdiger-A. and Yang, Yong and Notten, Peter H. L.},
title = {{D}egradation mechanisms of
{C}6/{L}i{N}i0.5{M}n0.3{C}o0.2{O}2 {L}i-ion batteries
unraveled by non-destructive and post-mortem methods},
journal = {Journal of power sources},
volume = {416},
issn = {0378-7753},
address = {New York, NY [u.a.]},
publisher = {Elsevier},
reportid = {FZJ-2019-03150},
pages = {163 - 174},
year = {2019},
abstract = {The ageing mechanisms of C6/LiNi0.5Mn0.3Co0.2O2 batteries
at various discharging currents and temperatures have
systematically been investigated with electrochemical and
post-mortem analyses. The irreversible capacity losses () at
various ageing conditions are calculated on the basis of
regularly determined electromotive force (EMF) curves. Two
stages can be distinguished for the degradation of the
storage capacity at 30 °C. The first stage includes SEI
formation, cathode dissolution, etc. The second stage is
related to battery polarization. The various degradation
mechanisms of the individual electrodes have been
distinguished by vs and vs plots. The
Solid-Electrolyte-Interface (SEI) formation as well as the
electrode degradation has been experimentally confirmed by
XPS analyses. Both Ni and Mn elements are detected at the
anode while Co is absent, indicating that the bonding of Co
atoms is more robust in the cathode host structure. A
Cathode-Electrolyte-Interface (CEI) layer is also detected
at the cathode surface. The composition of the CEI layer
includes Li salts, such as LiF, LiCOOR, as well as
transition metal compounds like NiF2. Cathode dissolution is
considered to be responsible for both the NiF2 detected at
the cathode and Ni at the anode.},
cin = {IEK-9 / IEK-5},
ddc = {620},
cid = {I:(DE-Juel1)IEK-9-20110218 / I:(DE-Juel1)IEK-5-20101013},
pnm = {131 - Electrochemical Storage (POF3-131)},
pid = {G:(DE-HGF)POF3-131},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000459839100021},
doi = {10.1016/j.jpowsour.2019.01.083},
url = {https://juser.fz-juelich.de/record/863003},
}