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@ARTICLE{Kleiner:810962,
author = {Kleiner, Karin and Jakes, Peter and Scharner, Sebastian and
Liebau, Verena and Ehrenberg, Helmut},
title = {{C}hanges of the balancing between anode and cathode due to
fatigue in commercial lithium-ion cells},
journal = {Journal of power sources},
volume = {317},
issn = {0378-7753},
address = {New York, NY [u.a.]},
publisher = {Elsevier},
reportid = {FZJ-2016-03518},
pages = {25 - 34},
year = {2016},
abstract = {The electrode balancing defines the state of charge (SoC)
of a lithium-ion cell and is a crucial point considering
lifetime and safe operation. The electrode balancing varies
during fatigue which results in changes of the individual
electrode potentials for fixed (dis-)charge voltages of the
full-cell. Therefore the materials are cycled closer or
beyond their electrochemical (meta-)stability window. This
leads to accelerated degradation reactions or even to safety
problems. The origin of the changes in the cell balancing is
the limited amount of mobile lithium, which decreases during
cycling due to the loss of lithiated active material a), the
reduction of accessible lattice sites in the active
materials b) and the loss of active lithium outside the
electrodes c). In most of the commercial cells a) and b) can
be attributed to the cathode, c) occurs due to reactions on
the anode surface. Changes in the electrode balancing of
three differently fatigued 7 Ah lithium-ion cells are
investigated by electrochemical cycling of full- and
half-cells, assembled from cell components of the fatigued 7
Ah cells. Based on these results the observed performance
drop is assigned to a), b) or c) mentioned above and the
capacity losses are quantified.},
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:000375823400004},
doi = {10.1016/j.jpowsour.2016.03.049},
url = {https://juser.fz-juelich.de/record/810962},
}