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@ARTICLE{Bela:1025068,
author = {Bela, Marlena Maria and Stan, Marian Cristian and Winter,
Martin and Börner, Markus},
title = {{D}ual-{P}rotective {A}rtificial {L}ayer on {L}ithium
{M}etal {A}nodes for {I}mproved {E}lectrochemical
{P}erformance – an in-{D}epth {M}orphological and
{E}lectrochemical {C}haracterization},
journal = {Meeting abstracts},
volume = {MA2023-01},
number = {1},
issn = {1091-8213},
address = {Pennington, NJ},
publisher = {Soc.},
reportid = {FZJ-2024-02656},
pages = {400 - 400},
year = {2023},
note = {Hierbei handelt es sich lediglich um einen Abstract.},
abstract = {The energy density of traditional lithium ion batteries
(LIB) based on graphite intercalation compounds as negative
active material is approaching the theoretical limit and are
restricting the increasing demand of high energy battery
systems for various mobile and stationary applications.[1]
Consequently, the implementation of active materials with
high specific energies became prerequisite for future
battery technologies. Therein, lithium metal is one of the
most promising anode active materials to replace
state-of-the-art graphite active materials, due to its high
theoretical capacity and low electrode potential.[2]However,
poor cycling performance, low Coulombic efficiency, and the
uncontrollable Li dendrite growth during lithium
electrodeposition/dissolution processes remain as
predominant challenges.[3]Several approaches were proposed
to eliminate dendrite formation by implementing a
mechanically and electrochemically stable artificial solid
electrolyte interphase or artificial protective coatings
(aPC) by in-situ or ex-situ surface modifications.[4] These
designed aPCs should feature an increased and uniform Li-ion
flux, mechanical robustness and/or protection against
electrolyte decomposition, during substantial volume changes
upon electrodeposition/dissolution. However, aPCs fail to
support long term cycling stability in lithium metal
batteries since they cannot cover all requirements.[5]
Therefore, it is crucial to design and understand dual- and
multilayer system that address multiple aforementioned
requisites.[6]In this contribution, a dual-protective
artificial layer is constructed on Li metal by physical
vapor deposition consisting of an intermetallic LiZn-layer,
providing a uniform Li-ion flux, and an inorganic
Li3N-layer, which is electron-blocking, thus reveal surface
protective properties. In addition to electrochemical
characterization, the Li electrodeposition/dissolution
behavior was investigated by cryo-FIB/SEM analysis to
unravel the mechanism behind the enhanced cycling stability
in symmetrical Li||Li cells and cells with a layered
oxide-based positive electrode.[1] R. Schmuch, R. Wagner, G.
Hörpel, T. Placke, M. Winter, Nature Energy2018, 3, 267.[2]
J. Liu, Z. Bao, Y. Cui, E. J. Dufek, J. B. Goodenough, P.
Khalifah, Q. Li, B. Y. Liaw, P. Liu, A. Manthiram, Y. S.
Meng, V. R. Subramanian, M. F. Toney, V. V. Viswanathan, M.
S. Whittingham, J. Xiao, W. Xu, J. Yang, X.-Q. Yang, J.-G.
Zhang, Nature Energy2019, 4, 180.[3] T. Placke, R. Kloepsch,
S. Dühnen, M. Winter, Journal of Solid State
Electrochemistry2017, 21, 1939.[4] N. Delaporte, Y. Wang, K.
Zaghib, Frontiers in Materials2019, 6.[5] D. Lin, Y. Liu, Y.
Cui, Nature Nanotechnology2017, 12, 194.[6] S. Lee, K.-s.
Lee, S. Kim, K. Yoon, S. Han, M. H. Lee, Y. Ko, J. H. Noh,
W. Kim, K. Kang, Science Advances2022, 8, 1.},
cin = {IEK-12},
ddc = {540},
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},
doi = {10.1149/MA2023-011400mtgabs},
url = {https://juser.fz-juelich.de/record/1025068},
}