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@ARTICLE{Durmus:844257,
author = {Durmus, Yasin Emre and Montiel Guerrero, Saul Said and
Aslanbas, Özgür and Tempel, Hermann and Hausen, Florian
and de Haart, L.G.J. and Ein-Eli, Yair and Eichel,
Rüdiger-A. and Kungl, Hans},
title = {{I}nvestigation of the corrosion behavior of highly
{A}s-doped crystalline {S}i in alkaline {S}i–air
batteries},
journal = {Electrochimica acta},
volume = {265},
issn = {0013-4686},
address = {New York, NY [u.a.]},
publisher = {Elsevier},
reportid = {FZJ-2018-01698},
pages = {292 - 302},
year = {2018},
abstract = {High corrosion rate is one of the major obstacles that have
to be overcome in order to establish practical application
of primary alkaline Si–air batteries. At the current state
of development the theoretical specific capacity of 3820
mAh/g is reduced to 120 mAh/g in long term operable alkaline
Si–air batteries, with most of the capacity losses being
due to corrosion reactions. In the present work the
corrosion behavior of highly As-doped <100> oriented silicon
wafers, that have proved stable performance as anode
materials is summarized for a scope of conditions that may
arise in battery operation. More specific, corrosion rates
are presented and discussed with respect to (i) time
dependence, (ii) influence of KOH electrolyte concentration,
(iii) chemical vs. electrochemical corrosion, and (iv)
corrosion under anodic potentials as present during the
discharge of batteries. Corrosion rates were found to
exhibit stable time profiles for immersion times longer than
8 h. With respect to concentration dependence, three
ranges of KOH concentrations were identified. Within each
range, the corrosion behavior is governed by similar
mechanisms, but different limiting factors. Potentiodynamic
measurements show that large part of the corrosion is
chemical in nature. Under discharge conditions corrosion
increases whereby the discharge potential, corrosion rates,
and mass conversion efficiencies depend on KOH
concentrations and discharge current densities.},
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:000425751600034},
doi = {10.1016/j.electacta.2018.01.145},
url = {https://juser.fz-juelich.de/record/844257},
}