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@INPROCEEDINGS{Durmus:1020575,
author = {Durmus, Yasin Emre and Kaltenberg, Marcel and Kungl, Hans
and Tempel, Hermann and Ein-Eli, Yair and Eichel,
Rüdiger-A.},
title = {{BREAKING} {THE} {PASSIVITY} {WALL} {OF} {METALS}:
{EXEMPLI} {GRATIA} {NONAQUEOUS} {TI}–{AIR} {BATTERY}},
reportid = {FZJ-2024-00270},
year = {2023},
abstract = {In recent years, metal–air batteries have been gaining
much attention as one crucial line of development as
promising energy storage devices due to possessing high
theoretical specific energies and energy densities while
utilizing cost-effective, safe, and environmentally friendly
electrode materials. Among various possible metal–air
configurations, mostly Zn–, Fe–, and Al–air have been
the research focus for many decades. Up to now, Ti has not
been considered as an active anode material, although it is
a light metal that can possibly transfer up to 4 electrons.
The reason behind this is that the electrochemical behavior
of Ti is known for its passivity in various media and, also,
it is conceptually mistaken as an expensive metal (∼5
times cheaper than Li-hydroxide (as a Li source)).Herein, we
report a novel non-aqueous primary Ti–air battery
utilizing 1-ethyl-3-methylimidazolium oligofluorohydrogenate
(EMIm(HF)2.3F) room temperature ionic liquid as electrolyte.
Initially, the electrochemical behavior of Ti was studied by
potentiodynamic polarization, which revealed the first
insights into its electrochemical activity. Subsequently,
the galvanostatic discharge experiments were conducted to
evaluate the performance of Ti–air batteries in
full-cells. The battery could successfully be operated under
relatively high current densities (up to 0.75 mA/cm2) with
an average cell voltage of 1–1.2 V, yielding up to a
discharge capacity of 66 mAh/cm2. Post-mortem
characterization of the electrode surfaces was performed by
SEM in combination with EDS to analyze the potentially
deposited discharge products. Furthermore, ICP-OES and FTIR
techniques were employed for investigating the electrolytes
to gain further insights into the possible mechanisms
leading to cell discharge termination over time.
Accordingly, the possible reaction mechanisms governing
within the cell were proposed for such a novel Ti–air
battery. Such a metal–air battery holds a unique potential
to be the only metal with 4 electrons transfer during its
discharge once its full potential is harvested.},
month = {Oct},
date = {2023-10-08},
organization = {244th ECS Meeting, Gothenburg
(Sweden), 8 Oct 2023 - 12 Oct 2023},
subtyp = {After Call},
cin = {IEK-9},
cid = {I:(DE-Juel1)IEK-9-20110218},
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/1020575},
}