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@ARTICLE{Heckmann:860244,
author = {Heckmann, A. and Meister, P. and Kuo, Liang-Yin and Winter,
Martin and Kaghazchi, Payam and Placke, Tobias},
title = {{A} route towards understanding the kinetic processes of
bis(trifluoromethanesulfonyl) imide anion intercalation into
graphite for dual-ion batteries},
journal = {Electrochimica acta},
volume = {284},
issn = {0013-4686},
address = {New York, NY [u.a.]},
publisher = {Elsevier},
reportid = {FZJ-2019-01028},
pages = {669},
year = {2018},
abstract = {Even though lithium ion batteries are the state-of-the-art
battery technology for numerous applications, there is
extensive research on alternative battery technologies.
Dual-ion batteries (DIBs) and in particular their all
carbon/graphite versions, the dual-carbon (DCBs) and
dual-graphite batteries (DGBs), have emerged as an upcoming
and alternative approach for stationary energy storage
systems. However, there are still fundamental
electrochemical processes during charge and discharge
operation of DIBs not fully understood so far. In this work,
the kinetic processes during bis(trifluoromethanesulfonyl)
imide (TFSI) anion intercalation into graphitic carbon, that
proceeds by stage formation, are discussed in detail. The
computational calculation of structural parameters of
TFSI-graphite intercalation compounds (TFSI-GICs) indicates
a possible maximum specific capacity of 140 mAh g⁻¹ and a
walking-like diffusion of the TFSI anion within the graphite
lattice. Moreover, a particular focus is set on
understanding the overpotential generation during the charge
process and its correlation to different specific capacities
for varying graphite particle sizes and operating
temperatures. In this context, a mechanism, supported by
electrochemical and computational experiments, is proposed
explaining the overpotential evolution on the basis of
(apparent) anion diffusion coefficients in graphite.
Temporarily higher (apparent) diffusion activation energies
close to filled stages seem to be responsible for
temporarily lower (apparent) diffusion coefficients and,
thus, for the evolution of additional overpotentials during
intercalation.},
cin = {IEK-1 / IEK-12},
ddc = {540},
cid = {I:(DE-Juel1)IEK-1-20101013 / 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:000442485100073},
doi = {10.1016/j.electacta.2018.07.181},
url = {https://juser.fz-juelich.de/record/860244},
}