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@ARTICLE{deKort:603142,
author = {de Kort, Laura M. and Lazemi, Masoud and Longo, Alessandro
and Gulino, Valerio and Rodenburg, Henrik P. and Blanchard,
Didier and Sahle, Christoph and Sundermann, Martin and
Gretarsson, Hlynur and van der Eerden, Ad M. J. and
Elnaggar, Hebatalla and de Groot, Frank M. F. and Ngene,
Peter},
title = {{D}eciphering the {O}rigin of {I}nterface‐{I}nduced
{H}igh {L}i and {N}a {I}on {C}onductivity in {N}anocomposite
{S}olid {E}lectrolytes {U}sing {X}‐{R}ay {R}aman
{S}pectroscopy},
journal = {Advanced energy materials},
volume = {14},
number = {9},
issn = {1614-6832},
address = {Weinheim},
publisher = {Wiley-VCH},
reportid = {PUBDB-2024-00779},
pages = {2303381},
year = {2024},
abstract = {Solid-state electrolytes (SSEs) with high ionic
conductivities are crucial for safer and high-capacity
batteries. Interface effects in nanocomposites of SSEs and
insulators can lead to profound increases in conductivity.
Understanding the composition of the interface is crucial
for tuning the conductivity of composite solid electrolytes.
Herein, X-ray Raman Scattering (XRS) spectroscopy is used
for the first time to unravel the nature of the interface
effects responsible for conductivity enhancements in
nanocomposites of complex hydride-based electrolytes
(LiBH$_4$, NaBH$_4$, and NaNH$_2$) and oxides. XRS probe of
the Li, Na, and B local environments reveals that the
interface consists of highly distorted/defected and
structurally distinct phase(s) compared to the original
compounds. Interestingly, nanocomposites with higher
concentrations of the interface compounds exhibit higher
conductivities. Clear differences are observed in the
interface composition of SiO$_2$- and Al$_2$O$_3$-based
nanocomposites, attributed to differences in the reactivity
of their surface groups. These results demonstrate that
interfacial reactions play a dominant role in conductivity
enhancement in composite solid electrolytes. This work
showcases the potential of XRS in investigating interface
interactions, providing valuable insights into the often
complex ion conductor/insulator interfaces, especially for
systems containing light elements such as Li, B, and Na
present in most SSEs and batteries.},
cin = {DOOR ; HAS-User / FS-PETRA-S},
ddc = {050},
cid = {I:(DE-H253)HAS-User-20120731 /
I:(DE-H253)FS-PETRA-S-20210408},
pnm = {632 - Materials – Quantum, Complex and Functional
Materials (POF4-632) / 6G3 - PETRA III (DESY) (POF4-6G3) /
SMART-X - Study of carrier transport in MAterials by
time-Resolved specTroscopy with ultrashort soft X-ray light
(860553)},
pid = {G:(DE-HGF)POF4-632 / G:(DE-HGF)POF4-6G3 /
G:(EU-Grant)860553},
experiment = {EXP:(DE-H253)P-P01-20150101},
typ = {PUB:(DE-HGF)16},
UT = {WOS:001135453700001},
doi = {10.1002/aenm.202303381},
url = {https://bib-pubdb1.desy.de/record/603142},
}