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@ARTICLE{Chen:888293,
author = {Chen, Zhiqiang and Danilov, Dmitri and Eichel, Rüdiger-A.
and Notten, Peter H. L.},
title = {{O}n the reaction rate distribution in porous electrodes},
journal = {Electrochemistry communications},
volume = {121},
issn = {1388-2481},
address = {Amsterdam [u.a.]},
publisher = {Elsevier Science},
reportid = {FZJ-2020-04819},
pages = {106865 -},
year = {2020},
abstract = {Reaction rate distribution across porous electrodes in
Li-ion battery applications largely determines the overall
battery performance. In the present work, expressions for
the reaction rate distribution across porous electrodes are
analytically derived and analyzed for small current and
short time applications. The dependency on the effective
ionic and electronic conductivities is systematically
investigated and discussed. It is found that in the case of
equal effective electronic and ionic conductivities, the
reaction rate distribution is symmetric around the electrode
mid-point. Small conductivities induce the charge-transfer
reaction to preferentially occur at the interface of the
current collector and separator, while high conductivities
make the reaction rate distribution uniform across the
electrode thickness. In the case of unequal conductivities,
a decrease in the effective electronic conductivity shifts
the reaction rate distribution towards the electrode/current
collector interface. In contrast, a decrease in the
effective ionic conductivity shifts the reaction rate
distribution towards the electrode/separator interface. It
is also found that the reaction rate distribution shows
saturating behavior when the effective electronic or ionic
conductivity grows infinitely. A further increase in the
effective ionic or electronic conductivity does not lead to
any further reaction rate distribution changes.},
cin = {IEK-9},
ddc = {540},
cid = {I:(DE-Juel1)IEK-9-20110218},
pnm = {135 - Fuel Cells (POF3-135)},
pid = {G:(DE-HGF)POF3-135},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000605594000014},
doi = {10.1016/j.elecom.2020.106865},
url = {https://juser.fz-juelich.de/record/888293},
}