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@ARTICLE{Homann:878608,
author = {Homann, Gerrit and Meister, Paul and Stolz, Lukas and
Brinkmann, Jan Paul and Kulisch, Jörn and Adermann, Torben
and Winter, Martin and Kasnatscheew, Johannes},
title = {{H}igh-{V}oltage {A}ll-{S}olid-{S}tate {L}ithium {B}attery
with {S}ulfide-{B}ased {E}lectrolyte: {C}hallenges for the
{C}onstruction of a {B}ipolar {M}ulticell {S}tack and {H}ow
to {O}vercome {T}hem},
journal = {ACS applied energy materials},
volume = {3},
number = {4},
issn = {2574-0962},
address = {Washington, DC},
publisher = {ACS Publications},
reportid = {FZJ-2020-02946},
pages = {3162 - 3168},
year = {2020},
abstract = {Solid electrolytes can be the key for the desired goal of
increased safety and specific energies of batteries. On a
cell and battery pack level, the all-solid nature and the
absence of liquid electrolyte leakage are considered to
enable safe and effective performance realization of the
rechargeable Li metal electrode and bipolar cell stacking,
respectively. Well performing Li metal cells with
high-energy/voltage positive electrodes such as
LiNi0.6Mn0.2Co0.2O2 (NMC622) can already be cycled when
using a blend of the sulfidic solid electrolyte such as
β-Li3PS4 (LPS) and Li salt in poly(ethylene)oxide (PEO).
However, operation of a bipolar stack using these cell
materials utilizing the common Al/Cu clad as bipolar plate
results in an immediate short circuit, because of an ionic
intercell connection via molten LiTFSI/PEO. Oversizing the
area of the bipolar plates can prevent such a short circuit
and indeed enables a partial charge of the stack, but after
a certain time, the next cell failure is observed,
consisting of severe, sulfur caused, corrosion of copper
which was used as metal substrate for the lithium anode. The
exchange of the sulfide incompatible Cu collector by (also
area-oversized) stainless steel can finally enable a
failure-free performance of the bipolar cell stack, which
performs similar to a single cell with regard to cycling
stability.},
cin = {IEK-12},
ddc = {540},
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:000529190300007},
doi = {10.1021/acsaem.0c00041},
url = {https://juser.fz-juelich.de/record/878608},
}