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@ARTICLE{Khnle:908795,
author = {Kühnle, Hannes and Knobbe, Edwin and Figgemeier, Egbert},
title = {{I}n {S}itu {O}ptical and {E}lectrochemical
{I}nvestigations of {L}ithium {D}epositions as a {F}unction
of {C}urrent {D}ensities},
journal = {Journal of the Electrochemical Society},
volume = {169},
number = {4},
issn = {0013-4651},
address = {Bristol},
publisher = {IOP Publishing},
reportid = {FZJ-2022-02840},
pages = {040528 -},
year = {2022},
abstract = {The electrodeposition behavior of lithium metal as a
function of the current density at room temperature was
investigated in a symmetrical face‑to‑face in‑situ
optical cell. After a defined initial contact time between
electrode and electrolyte, various current densities in the
range of 0.05 mA cm−2 to 10 mA cm−2 were tested.
Constant current phases, electrochemical impedance
spectroscopy measurements and in situ images of the working
electrode were recorded and results were compared. Two
regimes of lithium deposition with different optical and
electrochemical characteristics were identified as a
function of current density. The first regime, at low
current densities (0.05 mA cm−2–0.5 mA cm−2), showed
none to tiny lithium depositions with sporadic large lithium
structures at the higher end of this range. The second
regime, at high current densities (2 mA cm−2–10 mA
cm−2), showed many smaller, deposited lithium structures.
The experimental results are discussed in the context of the
formation and presence of metal-electrolyte interphases
presumably by chemical reactions between lithium and
electrolyte, current density and their interactions with
each other. The correlation of fundamental parameters of
lithium metal deposition with current density must be taken
into account for the development of lithium metal-based
energy storage devices.},
cin = {IEK-12},
ddc = {660},
cid = {I:(DE-Juel1)IEK-12-20141217},
pnm = {1221 - Fundamentals and Materials (POF4-122)},
pid = {G:(DE-HGF)POF4-1221},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000782495000001},
doi = {10.1149/1945-7111/ac644e},
url = {https://juser.fz-juelich.de/record/908795},
}