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@ARTICLE{Weinrich:841125,
author = {Weinrich, Henning and Come, Jérémy and Tempel, Hermann
and Kungl, Hans and Eichel, Rüdiger-A. and Balke, Nina},
title = {{U}nderstanding the nanoscale redox-behavior of iron-anodes
for rechargeable iron-air batteries},
journal = {Nano energy},
volume = {41},
issn = {2211-2855},
address = {Amsterdam [u.a.]},
publisher = {Elsevier},
reportid = {FZJ-2017-08225},
pages = {706 - 716},
year = {2017},
abstract = {Iron-air cells provide a promising and resource-efficient
alternative battery concept with superior area specific
power density characteristics compared to state-of-the-art
Li-air batteries and potentially superior energy density
characteristics compared to present Li-ion batteries.
Understanding charge-transfer reactions at the
anode-electrolyte interface is the key to develop
high-performance cells. By employing in-situ electrochemical
atomic force microscopy (in-situ EC-AFM), in-depth insight
into the electrochemically induced surface reaction
processes on iron in concentrated alkaline electrolyte is
obtained. The results highlight the formation and growth of
the redox-layer on iron over the course of several
oxidation/reduction cycles. By this means, a direct
correlation between topography changes and the corresponding
electrochemical reactions at the nanoscale could
unambiguously be established. Here, the twofold character of
the nanoparticulate redox-layer in terms of its passivating
character and its contribution to the electrochemical
reactions is elucidated. Furthermore, the evolution of
single nanoparticles on the iron electrode surface is
evaluated in unprecedented and artifact-free detail. Based
on the dedicated topography analysis, a detailed structural
model for the evolution of the redox-layer which is likewise
elementary for corrosion science and battery research is
derived.},
cin = {IEK-9},
ddc = {540},
cid = {I:(DE-Juel1)IEK-9-20110218},
pnm = {131 - Electrochemical Storage (POF3-131) / HITEC -
Helmholtz Interdisciplinary Doctoral Training in Energy and
Climate Research (HITEC) (HITEC-20170406)},
pid = {G:(DE-HGF)POF3-131 / G:(DE-Juel1)HITEC-20170406},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000415302600078},
doi = {10.1016/j.nanoen.2017.10.023},
url = {https://juser.fz-juelich.de/record/841125},
}