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@INPROCEEDINGS{Schleker:1035347,
author = {Schleker, Peter Philipp Maria and Jakes, Peter and Daniel,
Davis Thomas and Eichel, Rüdiger-A. and Granwehr, Josef},
title = {{H}ow {E}lectrolyte {C}ontact {R}eversibly {C}hanges {B}ulk
{P}roperties of {E}lectrode {M}aterials},
reportid = {FZJ-2025-00394},
year = {2024},
abstract = {Electrode materials for batteries and electrolysers are
optimized and analyzed regarding their application, which
has led to modern high-performance materials. Until now, it
is spectroscopically challenging to observe the intrinsic
chemical equilibria between electrode material and
electrolyte that may influence more than just the interface.
Monitoring changes in the bulk electrode material without
external potential would contribute to the understanding of
the overall system.Here we use lithium titanate as inorganic
material [1-2] and a nitrogen containing organic carbon
material to show how the pure contact of the electrolyte
influences the electronic structure/dynamics of such solid
materials. In case of the Lithium titanate an electrolyte
dependent change of the bulk could be detected by NMR
(Nuclear Magnetic Resonance), which allows e.g. conclusions
on the two-phase equilibrium of lithium ions. In the case of
the diamagnetic carbon material, radical centres could
reversibly be induced and observed by EPR (Electron
Paramagnetic Resonance), supporting an electrolyte dependent
reactivity in catalytic applications. Overall, the
observations allow aspects of the intrinsic activity of the
materials to be better understood and thus indicate
additional starting points for improving the electrochemical
systems. Literature:[1] P. P. M. Schleker, P. Jakes, et al.,
Communications Chemistry 2023, 6 (1), 113.[2] P. P. M.
Schleker, R.-A. Eichel, et al., Appl Magn Reson 2023, 54,
1463-1480.},
month = {Sep},
date = {2024-09-16},
organization = {Electrochemistry 2024 - GDCH,
Braunschweig (Germany), 16 Sep 2024 -
19 Sep 2024},
subtyp = {After Call},
cin = {IET-1},
cid = {I:(DE-Juel1)IET-1-20110218},
pnm = {1223 - Batteries in Application (POF4-122) / AdamBatt -
Fortschrittliche Materialien für die Anwendung in Hybriden
Festkörperbatterien (13XP0305A)},
pid = {G:(DE-HGF)POF4-1223 / G:(BMBF)13XP0305A},
typ = {PUB:(DE-HGF)6},
doi = {10.34734/FZJ-2025-00394},
url = {https://juser.fz-juelich.de/record/1035347},
}