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@ARTICLE{Vijayakumar:1024596,
author = {Vijayakumar, Vidyanand and Diddens, Diddo and Heuer,
Andreas and Kurungot, Sreekumar and Winter, Martin and Nair,
Jijeesh Ravi},
title = {{D}ioxolanone-{A}nchored {P}oly(allyl ether)-{B}ased
{C}ross-{L}inked {D}ual-{S}alt {P}olymer {E}lectrolytes for
{H}igh-{V}oltage {L}ithium {M}etal {B}atteries},
journal = {ACS applied materials $\&$ interfaces},
volume = {12},
number = {1},
issn = {1944-8244},
address = {Washington, DC},
publisher = {Soc.},
reportid = {FZJ-2024-02270},
pages = {567 - 579},
year = {2020},
abstract = {Novel cross-linked polymer electrolytes (XPEs) are
synthesized by free-radical copolymerization induced by
ultraviolet (UV)-light irradiation of a reactive solution,
which is composed of a difunctional poly(ethylene glycol)
diallyl ether oligomer (PEGDAE), a monofunctional reactive
diluent 4-vinyl-1,3-dioxolan-2-one (VEC), and a stock
solution containing lithium salt (lithium
bis(trifluoromethanesulfonyl)imide, LiTFSI) in a
carbonate-free nonvolatile plasticizer, poly(ethylene
glycol) dimethyl ether (PEGDME). The resulting polymer
matrix can be represented as a linear polyethylene chain
functionalized with cyclic carbonate (dioxolanone) moieties
and cross-linked by ethylene oxide units. A series of XPEs
are prepared by varying the [O]/[Li] ratio (24 to 3) of the
stock solution and thoroughly characterized using
physicochemical (thermogravimetric analysis–mass
spectrometry, differential scanning calorimetry, NMR, etc.)
and electrochemical techniques. In addition, quantum
chemical calculations are performed to elucidate the
correlation between the electrochemical oxidation potential
and the lithium ion–ethylene oxide coordination in the
stock solution. Later, lithium bis(fluorosulfonyl)imide
(LiFSI) salt is incorporated into the electrolyte system to
produce a dual-salt XPE that exhibits improved
electrochemical performance, a stable interface against
lithium metal, and enhanced physical and chemical
characteristics to be employed against high-voltage
cathodes. The XPE membranes demonstrated excellent
resistance against lithium dendrite growth even after
reversibly plating and stripping lithium ions for more than
1000 h with a total capacity of 0.5 mAh cm–2. Finally, the
XPE films are assembled in a lab-scale lithium metal battery
configuration by using carbon-coated LiFePO4 (LFP) or
LiNi0.8Co0.15Al0.05O2 (NCA) as a cathode and
galvanostatically cycled at 20, 40, and 60 °C. Remarkably,
at 20 °C, the NCA-based lithium metal cells displayed
excellent cycling stability and good capacity retention
$(>50\%)$ even after 1000 cycles.},
cin = {IEK-12},
ddc = {600},
cid = {I:(DE-Juel1)IEK-12-20141217},
pnm = {1222 - Components and Cells (POF4-122) / 1223 - Batteries
in Application (POF4-122) / FestBatt-Polymere -
Materialplattform 'Polymere' im Rahmen des Kompetenzclusters
für Festkörperbatterien (13XP0175A)},
pid = {G:(DE-HGF)POF4-1222 / G:(DE-HGF)POF4-1223 /
G:(BMBF)13XP0175A},
typ = {PUB:(DE-HGF)16},
pubmed = {31825198},
UT = {WOS:000507146100052},
doi = {10.1021/acsami.9b16348},
url = {https://juser.fz-juelich.de/record/1024596},
}