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@ARTICLE{Imholt:857795,
author = {Imholt, Laura and Dörr, Tobias S. and Zhang, Peng and
Ibing, Lukas and Cekic-Laskovic, Isidora and Winter, Martin
and Brunklaus, Gunther},
title = {{G}rafted polyrotaxanes as highly conductive electrolytes
for lithium metal batteries},
journal = {Journal of power sources},
volume = {409},
issn = {0378-7753},
address = {New York, NY [u.a.]},
publisher = {Elsevier},
reportid = {FZJ-2018-06762},
pages = {148 - 158},
year = {2019},
abstract = {Hyperbranched polymers comprised of polyrotaxanes as
mechanically stable backbone and grafted polycaprolactone
(PCL) side chains are utilized as solid polymer electrolyte
for application in lithium metal (LMBs) and lithium ion
batteries (LIBs). The polyrotaxanes were obtained from
self-assembly of Cyclodextrin (CD) host molecules threading
onto polyethylenoxide (PEO) chains. In particular, CD serves
as initiator for a ring-opening-polymerization of PCL
affording pendant side chains with merely a few monomer unit
lengths that foster enhanced lithium ion transport, as
mediated by well-defined lamellar morphology of the PCL side
chains. An impressive ionic conductivity of 1 mS cm−1
of the solid polymer electrolyte at 60 °C and more than
0.1 mS cm-1 at room temperature in addition to a
superior oxidative electrochemical stability of up to
4.7 V vs. Li/Li+ allows for robust galvanostatic cycling
in LiFePO4|Li cells, even at reduced temperatures not
accessible by commonly utilized PEO-based electrolytes. The
hyperbranched polymers can be readily up-scaled and further
modified, thereby demonstrating the versatility of the
introduced class of solid-state polymer electrolytes, as
reflected by its interfacial stability against the
high-capacity Lithium metal anode.},
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},
UT = {WOS:000452945600018},
doi = {10.1016/j.jpowsour.2018.08.077},
url = {https://juser.fz-juelich.de/record/857795},
}