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@ARTICLE{Streipert:878605,
author = {Streipert, Benjamin and Röser, Stephan and Kasnatscheew,
Johannes and Janßen, Pia and Cao, Xia and Wagner, Ralf and
Cekic-Laskovic, Isidora and Winter, Martin},
title = {{I}nfluence of {L}i{PF} 6 on the {A}luminum {C}urrent
{C}ollector {D}issolution in {H}igh {V}oltage {L}ithium
{I}on {B}atteries after {L}ong-{T}erm {C}harge/{D}ischarge
{E}xperiments},
journal = {Journal of the Electrochemical Society},
volume = {164},
number = {7},
issn = {1945-7111},
address = {Bristol},
publisher = {IOP Publishing},
reportid = {FZJ-2020-02943},
pages = {A1474 - A1479},
year = {2017},
abstract = {The long-term influence of the most commonly used
conducting salt in electrolyte formulations, lithium
hexafluorophosphate, on the aluminum current collector
stability in high voltage lithium ion batteries was
investigated. By means of different surface sensitive
techniques (scanning electron microscopy, atomic force
microscopy and X-ray photoelectron spectroscopy), after 1003
simulated charge/discharge cycles, anodic aluminum
dissolution was found to take place at elevated potential
(4.95 V vs. Li/Li+) but only to a minor extent. Pitting of
the Al collector could be assessed in the nanometer range.
Furthermore, it could be revealed that local pit formation
is related to local "native" grooves on the aluminum foil,
which develop during the production process of the aluminum
foil. The obtained results were evaluated and compared to a
reference electrolyte containing the alternative conducting
salt lithium bis(trifluoromethanesulfonyl)imide. Our
findings imply two possible mechanisms for the occurring Al
dissolution behavior at elevated potentials. Either, an
accelerated aluminum dissolution process, or a continuous
passivation/LiPF6-decomposition process.},
cin = {IEK-12},
ddc = {660},
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:000404397300016},
doi = {10.1149/2.0671707jes},
url = {https://juser.fz-juelich.de/record/878605},
}