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@ARTICLE{MontielGuerrero:897253,
author = {Montiel Guerrero, Saul Said and Durmus, Yasin Emre and
Dzieciol, Krzysztof and Basak, Shibabrata and Tempel,
Hermann and Waasen, Stefan and Kungl, Hans and Eichel,
Rüdiger-A.},
title = {{I}mproved {E}lectrochemical {P}erformance of {Z}inc
{A}nodes by {EDTA} in {N}ear‐{N}eutral {Z}inc−{A}ir
{B}atteries},
journal = {Batteries $\&$ supercaps},
volume = {4},
number = {12},
issn = {2566-6223},
address = {Weinheim},
publisher = {Wiley-VCH},
reportid = {FZJ-2021-03715},
pages = {1830-1842},
year = {2021},
abstract = {The influence of ethylenediaminetetraacetic acid (EDTA)
electrolyte additive on the performance of Zn−air
batteries with near-neutral chloride-based electrolytes was
examined for primary and secondary batteries. The
electrochemical measurements indicated that Zn is not
completely active in neat 2 M NaCl, but still could be
discharged up to 1 mA cm−2 around −1.0 VAg/AgCl.
The characterization of the Zn surfaces revealed the
existence of a passive film consisting of Simonkolleite,
Zn(OH)2, and/or ZnO. The EDTA additive enhanced the
discharge voltages by 200 mV to −1.2 VAg/AgCl
indicating an active Zn surface. The effect of EDTA is
explained by its chelation abilities with Zn2+ before
formation of hydroxide or oxide species. The Zn−air cells
with EDTA were operated up to 930 h with specific energies
up to 840 Wh kgZn−1. The cells could also be cycled up
to 70 cycles while providing enhanced discharge voltages
at 1.15 V over 50 cycles. The positive effect of EDTA is
dependent on the amount of free EDTA molecules.
Nevertheless, the Zn−air cells showed better performance
in terms of higher discharge voltage, discharge energies,
and lower overpotentials in presence of EDTA.},
cin = {IEK-9 / ZEA-2},
ddc = {620},
cid = {I:(DE-Juel1)IEK-9-20110218 / I:(DE-Juel1)ZEA-2-20090406},
pnm = {1223 - Batteries in Application (POF4-122)},
pid = {G:(DE-HGF)POF4-1223},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000681759200001},
doi = {10.1002/batt.202100116},
url = {https://juser.fz-juelich.de/record/897253},
}