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@ARTICLE{Stegmaier:893834,
author = {Stegmaier, Sina and Schierholz, Roland and Povstugar, Ivan
and Barthel, Juri and Rittmeyer, Simon P. and Yu, Shicheng
and Wengert, Simon and Rostami, Samare and Kungl, Hans and
Reuter, Karsten and Eichel, Rüdiger-A. and Scheurer,
Christoph},
title = {{N}ano‐{S}cale {C}omplexions {F}acilitate {L}i
{D}endrite‐{F}ree {O}peration in {LATP} {S}olid‐{S}tate
{E}lectrolyte},
journal = {Advanced energy materials},
volume = {11},
number = {26},
issn = {1614-6840},
address = {Weinheim},
publisher = {Wiley-VCH},
reportid = {FZJ-2021-02873},
pages = {2100707 -},
year = {2021},
abstract = {Dendrite formation and growth remains a major obstacle
toward high-performance all solid-state batteries using Li
metal anodes. The ceramic Li(1+x)Al(x)Ti(2−x)(PO4)3 (LATP)
solid-state electrolyte shows a higher than expected
stability against electrochemical decomposition despite a
bulk electronic conductivity that exceeds a recently
postulated threshold for dendrite-free operation. Here,
transmission electron microscopy, atom probe tomography, and
first-principles based simulations are combined to establish
atomistic structural models of glass-amorphous LATP grain
boundaries. These models reveal a nanometer-thin complexion
layer that encapsulates the crystalline grains. The distinct
composition of this complexion constitutes a sizable
electronic impedance. Rather than fulfilling macroscopic
bulk measures of ionic and electronic conduction, LATP might
thus gain the capability to suppress dendrite nucleation by
sufficient local separation of charge carriers at the
nanoscale.},
cin = {ER-C-2 / IEK-9},
ddc = {050},
cid = {I:(DE-Juel1)ER-C-2-20170209 / I:(DE-Juel1)IEK-9-20110218},
pnm = {5353 - Understanding the Structural and Functional Behavior
of Solid State Systems (POF4-535) / 1223 - Batteries in
Application (POF4-122)},
pid = {G:(DE-HGF)POF4-5353 / G:(DE-HGF)POF4-1223},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000655739200001},
doi = {10.1002/aenm.202100707},
url = {https://juser.fz-juelich.de/record/893834},
}