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@ARTICLE{Ingber:1017615,
author = {Ingber, Tjark T. K. and Bela, Marlena M. and Püttmann,
Frederik and Dohmann, Jan F. and Bieker, Peter and Börner,
Markus and Winter, Martin and Stan, Marian},
title = {{E}lucidating the lithium deposition behavior in
open-porous copper micro-foam negative electrodes for
zero-excess lithium metal batteries},
journal = {Journal of materials chemistry / A},
volume = {11},
number = {33},
issn = {2050-7488},
address = {London [u.a.]},
publisher = {RSC},
reportid = {FZJ-2023-04231},
pages = {17828 - 17840},
year = {2023},
note = {Unterstützt durch BMBF Grants: MEET Hi-EnD III”
(03XP0258A), “ProLiFest” (03XP0253A) und “AMaLiS”
(03XP0125D)},
abstract = {In zero-excess lithium metal batteries (ZELMBs), also
termed “anode-free” LMBs, Li from the positive electrode
is electrodeposited onto a bare current collector instead of
the Li metal negative electrode commonly used in LMBs. This
enables high theoretical energy density and facile, safe,
and low-cost assembly. To tackle coulombic inefficiencies
during Li deposition/dissolution, 3D structured current
collectors can be used instead of 2D foil materials. This
study elucidates the Li deposition behavior in custom-made
open-porous Cu micro-foams from nucleation to large scale
deposition. For the first time in ZELMBs, surface and
sub-surface Li deposits in open-porous 3D materials are
compared to deposits on 2D foils using cryogenic focused ion
beam scanning electron microscopy (cryo-FIB-SEM). The
results highlight that Cu micro-foams can store substantial
amounts of dendrite-free Li in their open-porous 3D
structure, minimizing detrimental volume changes during Li
deposition/dissolution. Electrochemical analyses and
simulations reveal that current density distribution over
the large surface area of the Cu micro-foams reduces the Li
nucleation overvoltage by $≈40\%.$ Also, charge/discharge
cycling in ZELMBs shows increases in coulombic efficiency,
capacity retention, and cycle life. Overall, this work
explains how open-porous Cu micro-foam current collectors
improve the Li deposition behavior to boost the cycling
characteristics of ZELMBs.},
cin = {IEK-12},
ddc = {530},
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:001047520300001},
doi = {10.1039/D3TA04060G},
url = {https://juser.fz-juelich.de/record/1017615},
}