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@ARTICLE{Wang:1034990,
author = {Wang, Jian-Fen and Weiling, Matthias and Pfeiffer, Felix
and Liu, Kun-Ling and Baghernejad, Masoud},
title = {{M}olecular {I}nsights into the {I}nterfacial {P}henomena
at the {L}i {M}etal | {P}olymer {S}olid‐{S}tate
{E}lectrolyte in {A}node‐{F}ree {C}onfiguration {D}uring
{L}i {P}lating‐{S}tripping via {A}dvanced {O}perando
{ATR}‐{FTIR} {S}pectroscopy},
journal = {Advanced energy materials},
volume = {15},
number = {8},
issn = {1614-6832},
address = {Weinheim},
publisher = {Wiley-VCH},
reportid = {FZJ-2025-00096},
pages = {2404569},
year = {2025},
note = {German Federal Ministry for Education and Research within
the project “EFoBatt” (grant number 13XP5129)},
abstract = {Solid-state batteries are regarded as safe and
high-energy-density candidates for next-generation energy
storage. However, gaining a mechanistic understanding of the
interfacial phenomena under real electrochemically working
conditions remains a major challenge for cells containing
solid-state electrolytes. This work presents an in-house
built attenuated total reflection fourier-transform infrared
(ATR-FTIR) spectroscopy cell equipped with an internal
temperature-control unit. This cell is used for operando
characterization of interfacial processes between plated Li
and polymer during Li plating/stripping. As a proof of
concept, a polymer electrolyte (cr-PEO10LiTFSI) containing
poly(ethylene oxide), Li bis-(trifluoromethanesulfonyl)imide
and crosslink-initiator benzophenone (BP) is introduced on a
copper mesh as current collector at 60 °C. The developed
ATR-FTIR spectroscopy setup provides detailed insights into
the electrolyte degradation and reveals the crystallinity
transformation of PEO at the interface during plating.
Moreover, for the first time, the degradation of BP is
observed. This compound, often overlooked in electrolyte
systems due to its low concentration, is found to play a
significant role in the interfacial electrochemistry
process. Overall, this study provides a comprehensive
overview of the characterization on the PEO
electrolyte-lithium metal interface and introduces a novel
perspective on the reaction of BP as a crosslinking
initiator in the solid-state batteries.},
cin = {IMD-4},
ddc = {050},
cid = {I:(DE-Juel1)IMD-4-20141217},
pnm = {1221 - Fundamentals and Materials (POF4-122)},
pid = {G:(DE-HGF)POF4-1221},
typ = {PUB:(DE-HGF)16},
UT = {WOS:001385287700001},
doi = {10.1002/aenm.202404569},
url = {https://juser.fz-juelich.de/record/1034990},
}