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@INPROCEEDINGS{Oevermann:1025512,
author = {Oevermann, Steffen and Chiou, Min-Huei and Winter, Martin
and Brunklaus, Gunther},
title = {{C}ombinations of polymer-based cathode and electrolyte
materials for quasi-solid organic radical batteries enabling
high current density applications},
reportid = {FZJ-2024-02913},
year = {2024},
abstract = {In recent years, organic radical polymer-based batteries
(ORBs) have attracted substantial interest and attention,
primarily attributed to their remarkable features including
printability and rapid discharge capabilities. The latter is
bestowed by organic redox-active polymers (ORP) as pivotal
constituents that afford prompt and reversible redox
reactions. High-power densities of current ORBs are
particularly interesting in the frame of so-called
“Internet of Things” (IoT) devices that typically
discharge with high currents and short-duration pulse loads
for data transmission. Nevertheless, high current densities
could be a strong burden of the cells and necessitate close
attention to safety aspects of the battery materials.
Exploitation of many liquid electrolytes, in view of high
pulsed experiments, introduces inherent safety concerns due
to flammability of components. Here, a polymer-based cell
chemistry may be safer due to non-volatility and higher
viscosity that eventually prevent hazards even upon
mechanical abuse of the cells.In the present study, the
suitability of selected solid and quasi-solid polymer
electrolytes for operation with PTMA cathodes (Qtheo = 111
mAh g−1) and lithium anodes, respectively, is critically
evaluated. Solid polymer electrolytes may be afflicted by
challenges associated with poor electrical contacts,
exhibiting unfavorably large cell resistances, whereas the
incorporation of quasi-solid polymer electrolytes that
comprise flowable components allows for establishing good
electrochemical contacts at electrolyte-electrode
interfaces. A carbonate-based quasi-solid polymer
electrolyte showcases competitive electrochemical
performances, as demonstrated by initial specific discharge
capacities of more than 82 mAh g−1 at rates of up to 1C
(0.1 mAh) and by successful durability of the system, even
after repeated pulse discharges. The obtained insights from
this study are significant towards designing highly
competitive solid ORBs, also promoting exploitation of more
sustainable and safer materials, in this way paving a way
towards cell concepts for greener IoT applications.},
month = {Apr},
date = {2024-04-10},
organization = {Advanced Battery Power 2024, Münster
(Germany), 10 Apr 2024 - 11 Apr 2024},
subtyp = {After Call},
cin = {IEK-12},
cid = {I:(DE-Juel1)IEK-12-20141217},
pnm = {1222 - Components and Cells (POF4-122) / DFG project
422726248 - SPP 2248: Polymer-basierte Batterien
(422726248)},
pid = {G:(DE-HGF)POF4-1222 / G:(GEPRIS)422726248},
typ = {PUB:(DE-HGF)24},
url = {https://juser.fz-juelich.de/record/1025512},
}