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@ARTICLE{Friesen:851121,
author = {Friesen, Alex and Hildebrand, Stephan and Horsthemke,
Fabian and Börner, Markus and Klöpsch, Richard and
Niehoff, Philip and Schappacher, Falko M. and Winter,
Martin},
title = {{A}l2{O}3 coating on anode surface in lithium ion
batteries: {I}mpact on low temperature cycling and safety
behavior},
journal = {Journal of power sources},
volume = {363},
issn = {0378-7753},
address = {New York, NY [u.a.]},
publisher = {Elsevier},
reportid = {FZJ-2018-04823},
pages = {70 - 77},
year = {2017},
abstract = {Commercial 18650-type lithium ion cells employing an Al2O3
coating on the anode surface as a safety feature are
investigated regarding cycling behavior at low temperatures
and related safety. Due to irreversible lithium metal
deposition, the cells show a pronounced capacity fading,
especially in the first cycles, leading to a shortened
lifetime. The amount of reversibly strippable lithium metal
decreases with every cycle. Post-mortem analysis of
electrochemically aged anodes reveals a thick layer of
lithium metal deposited beneath the coating. The Al2O3
coating on the electrode surface is mostly intact. The
lithium metal deposition and dissolution mechanisms were
determined combining electrochemical and post-mortem
methods. Moreover, the cell response to mechanical and
thermal abuse was determined in an open and adiabatic
system, revealing a similar behavior of fresh and aged
cells, thus, demonstrating no deterioration in the safety
behavior despite the presence of a thick lithium metal layer
on the anode surface.},
cin = {IEK-12},
ddc = {620},
cid = {I:(DE-Juel1)IEK-12-20141217},
pnm = {131 - Electrochemical Storage (POF3-131)},
pid = {G:(DE-HGF)POF3-131},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000411544300010},
doi = {10.1016/j.jpowsour.2017.07.062},
url = {https://juser.fz-juelich.de/record/851121},
}