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@ARTICLE{Ruttert:865962,
author = {Ruttert, Mirco and Holtstiege, Florian and Hüsker, Jessica
and Börner, Markus and Winter, Martin and Placke, Tobias},
title = {{H}ydrothermal-derived carbon as a stabilizing matrix for
improved cycling performance of silicon-based anodes for
lithium-ion full cells},
journal = {Beilstein journal of nanotechnology},
volume = {9},
issn = {2190-4286},
address = {Frankfurt, M.},
publisher = {Beilstein-Institut zur Förderung der Chemischen
Wissenschaften},
reportid = {FZJ-2019-05228},
pages = {2381 - 2395},
year = {2018},
abstract = {In this work, silicon/carbon composites are synthesized by
forming an amorphous carbon matrix around silicon
nanoparticles (Si-NPs) in a hydrothermal process. The
intention of this material design is to combine the
beneficial properties of carbon and Si, i.e., an improved
specific/volumetric capacity and capacity retention compared
to the single materials when applied as a negative electrode
in lithium-ion batteries (LIBs). This work focuses on the
influence of the Si content (up to 20 wt $\%)$ on the
electrochemical performance, on the morphology and structure
of the composite materials, as well as the resilience of the
hydrothermal carbon against the volumetric changes of Si, in
order to examine the opportunities and limitations of the
applied matrix approach. Compared to a physical mixture of
Si-NPs and the pure carbon matrix, the synthesized
composites show a strong improvement in long-term cycling
performance (capacity retention after 103 cycles: $≈55\%$
(20 wt $\%$ Si composite) and $≈75\%$ (10 wt $\%$ Si
composite)), indicating that a homogeneous embedding of Si
into the amorphous carbon matrix has a highly beneficial
effect. The most promising Si/C composite is also studied in
a LIB full cell vs a NMC-111 cathode; such a configuration
is very seldom reported in the literature. More
specifically, the influence of electrochemical prelithiation
on the cycling performance in this full cell set-up is
studied and compared to non-prelithiated full cells. While
prelithiation is able to remarkably enhance the initial
capacity of the full cell by ≈18 mAh g−1, this effect
diminishes with continued cycling and only a slightly
enhanced capacity of ≈5 mAh g−1 is maintained after 150
cycles.},
cin = {IEK-12},
ddc = {620},
cid = {I:(DE-Juel1)IEK-12-20141217},
pnm = {131 - Electrochemical Storage (POF3-131)},
pid = {G:(DE-HGF)POF3-131},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:30254833},
UT = {WOS:000443837000001},
doi = {10.3762/bjnano.9.223},
url = {https://juser.fz-juelich.de/record/865962},
}