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@ARTICLE{Mller:904272,
author = {Müller, Jannes and Abdollahifar, Mozaffar and Vinograd,
Andrey and Nöske, Markus and Nowak, Christine and Chang,
Shu-Jui and Placke, Tobias and Haselrieder, Wolfgang and
Winter, Martin and Kwade, Arno and Wu, Nae-Lih},
title = {{S}i-on-{G}raphite fabricated by fluidized bed process for
high-capacity anodes of {L}i-ion batteries},
journal = {The chemical engineering journal},
volume = {407},
issn = {1385-8947},
address = {Amsterdam},
publisher = {Elsevier},
reportid = {FZJ-2021-05842},
pages = {126603 -},
year = {2021},
note = {Zudem unterstützt durch BMBF Projekt: 03XP0133C},
abstract = {Composites consisting of graphite and silicon have been
considered as potential high-capacity anode materials for
the next-generation Li-ion batteries (LIBs). The synthesis
method is critical for determining the microstructure, which
is directly related to the material performance and the
cost-efficiency for making commercial electrode materials.
Herein, we report the fabrication of silicon-on-graphite
(Si@Gr) composites by fluidized bed granulation (FBG) for
the first time. The FBG process is shown to produce
composite powders comprising a uniform layer of nano-sized
Si particles lodged onto the surface of micron-sized
graphite particles to possess a core-shell microstructure.
Adopting a suitable binder during the FBG process enables a
firm adhesion of the Si nanoparticles on graphite surface
during subsequent carbon-coating, where the composite
particles are coated with pitch and then carbonised to form
a highly electronically conductive and mechanical
stabilizing layer of amorphous carbon. These carbon-coated
composites exhibit a high capacity reaching over 600 mAh
g−1, high rate capability and illustrates the potential of
long-cycle stability in Si@Gr || Li metal cells, showing
more than $70\%$ capacity retention after 400
charge-discharge cycles even without electrolyte
optimization. Furthermore, a significantly improved cycling
stability is found for the carbon-coated Si@Gr materials in
LiNi0.6Co0.2Mn0.2O2 (NCM-622) || Si@Gr full-cells.},
cin = {IEK-12},
cid = {I:(DE-Juel1)IEK-12-20141217},
pnm = {1221 - Fundamentals and Materials (POF4-122) / LiBEST -
Lithium-Ionen-Akku mit hoher elektrochemischer Leistung und
Sicherheit (13XP0133A)},
pid = {G:(DE-HGF)POF4-1221 / G:(BMBF)13XP0133A},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000607599400006},
doi = {10.1016/j.cej.2020.126603},
url = {https://juser.fz-juelich.de/record/904272},
}