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@ARTICLE{Li:848332,
author = {Li, Dongjiang and Li, Hu and Danilov, Dmitri and Gao, Lu
and Zhou, Jiang and Eichel, Rüdiger-A. and Yang, Yong and
Notten, Peter H. L.},
title = {{T}emperature-dependent cycling performance and ageing
mechanisms of {C} 6 /{L}i{N}i 1/3 {M}n 1/3 {C}o 1/3 {O} 2
batteries},
journal = {Journal of power sources},
volume = {396},
issn = {0378-7753},
address = {New York, NY [u.a.]},
publisher = {Elsevier},
reportid = {FZJ-2018-03576},
pages = {444 - 452},
year = {2018},
abstract = {Ageing mechanisms of NMC-based Li-ion
(C6/LiNi1/3Mn1/3Co1/3O2) batteries have been investigated
under various cycling conditions. The electromotive force
(EMF) curves are regularly determined by mathematical
extrapolation of voltage discharge curves. The irreversible
capacity losses determined from the EMF curves have been
investigated as a function of time and cycle number.
Parasitic side reactions, occurring at the cathode and
anode, determine the charge-discharge efficiency (CDE) and
discharge-charge efficiency (DCE), respectively. The
recently developed non-destructive voltage analysis method
is also applied to the present battery chemistry. The
decline of the second plateau of the dVEMF/dQdVEMF/dQ curves
upon cycling is considered to be an indicator of graphite
degradation whereas the development of the third peak in
these derivative curves is considered to be an indicator for
electrode voltage slippage. X-ray Photoelectron Spectroscopy
(XPS) measurements confirm the deposition of
transition-metal elements at the graphite electrode,
indicating dissolution of these metals from the cathode.
Furthermore, XPS analyses confirm the existence of a
Cathode-Electrolyte-Interface (CEI) layer. The outer CEI
layer is composed of various compounds, such as
carbonate-related Li salts, LiF and NiF2, etc., while the
inner CEI layer is dominantly composed of fluoride-related
compounds, such as NiF2. Finally, a cathode degradation
model including transition-metal dissolution and electrolyte
decomposition is proposed},
cin = {IEK-9},
ddc = {620},
cid = {I:(DE-Juel1)IEK-9-20110218},
pnm = {131 - Electrochemical Storage (POF3-131)},
pid = {G:(DE-HGF)POF3-131},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000440876700052},
doi = {10.1016/j.jpowsour.2018.06.035},
url = {https://juser.fz-juelich.de/record/848332},
}