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@INPROCEEDINGS{Durmus:1050301,
author = {Durmus, Yasin Emre and Im, Eunmi and Erkes, Rebecca and
Dzieciol, Krzysztof and Kungl, Hans and Tempel, Hermann and
Eichel, Rüdiger-A.},
title = {{E}xploring {E}lectrolyte {A}dditives for {E}nhancing
{Z}inc {A}node {P}erformance in {N}ear-{N}eutral
{Z}inc-{A}ir {B}atteries},
reportid = {FZJ-2026-00111},
year = {2025},
abstract = {Metal-air batteries are emerging as promising
electrochemical energy storage technologies because of their
high theoretical energy densities and the use of
cost-effective, safe, and abun-dant active materials. Among
the various types, zinc-based metal-air batteries are
particularly noteworthy for both primary and secondary
applications. While primary zinc-air batteries (ZABs) have
already been commercialized for various areas, secondary
batteries face chal-lenges especially in alkaline
environments. To overcome these issues, using aqueous
neutral electrolytes offers several benefits, such as
reducing electrolyte carbonization and preventing dendrite
formation. However, the performance of ZABs with neutral
electrolytes can be hin-dered by zinc surface passivation,
the formation of insoluble zinc compounds, and
corrosion.This study aims to evaluate the impact of glycine
(Gly) and iminodiacetic acid (IDA) as elec-trolyte additives
on the electrochemical behavior of zinc electrodes in
near-neutral secondary Zn-air batteries. Initially,
spectroscopy techniques were employed to understand the
interac-tions between the additives and zinc ions in the
electrolyte. Then, the open-circuit, potentiody-namic
polarization, and galvanostatic discharge experiments were
conducted to determine the electrochemical behavior of the
zinc electrodes, including corrosion parameters, discharge
po-tentials at various current densities, and the
effectiveness and buffering capabilities of the ad-ditives.
Additionally, microscopy techniques were used to
characterize the electrode surfaces after discharge
experiments to examine dissolution behavior and discharge
products. In-oper-ando X-ray computed tomography (XCT) was
employed to study the plating and stripping be-havior of
zinc electrodes with and without the electrolyte additives.
Long-term full-cell gal-vanostatic discharge experiments
demonstrated discharge specific energies of up to 850
Wh/kgZn, while galvanostatic cycling lasted up to 550 hours,
showing significantly im-proved overpotentials in cells
containing the electrolyte additives. Overall, the study
highlights the importance of using electrolyte additives to
overcome passivation and pH instability issues and optimize
the electrochemical performance while providing valuable
insights for the devel-opment of neutral electrolyte-based
zinc-air batteries.},
month = {Sep},
date = {2025-09-17},
organization = {4th International Zinc and other
Aqueous Batteries Workshop, Kyoto
(Japan), 17 Sep 2025 - 19 Sep 2025},
subtyp = {After Call},
cin = {IET-1},
cid = {I:(DE-Juel1)IET-1-20110218},
pnm = {1223 - Batteries in Application (POF4-122)},
pid = {G:(DE-HGF)POF4-1223},
typ = {PUB:(DE-HGF)6},
url = {https://juser.fz-juelich.de/record/1050301},
}