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@ARTICLE{Kick:874730,
author = {Kick, Matthias and Grosu, Cristina and Schuderer, Markus
and Scheurer, Christoph and Oberhofer, Harald},
title = {{M}obile {S}mall {P}olarons {Q}ualitatively {E}xplain
{C}onductivity in {L}ithium {T}itanium {O}xide {B}attery
{E}lectrodes},
journal = {The journal of physical chemistry letters},
volume = {11},
issn = {1948-7185},
address = {Washington, DC},
publisher = {ACS},
reportid = {FZJ-2020-01639},
pages = {2535 - 2540},
year = {2020},
abstract = {Lithium titanium oxide Li4Ti5O12 is an intriguing anode
material promising particularly long-life batteries, due to
its remarkable phase stability during (dis)charging of the
cell. However, its usage is limited by its low intrinsic
electronic conductivity. Introducing oxygen vacancies can be
one method for overcoming this drawback, possibly by
altering the charge carrier transport mechanism. We use
Hubbard corrected density functional theory to show that
polaronic states in combination with a possible hopping
mechanism can play a crucial role in the experimentally
observed increase in electronic conductivity. To gauge
polaronic charge mobility, we compute the relative
stabilities of different localization patterns and estimate
polaron hopping barrier heights.},
cin = {IEK-9},
ddc = {530},
cid = {I:(DE-Juel1)IEK-9-20110218},
pnm = {131 - Electrochemical Storage (POF3-131) / HITEC -
Helmholtz Interdisciplinary Doctoral Training in Energy and
Climate Research (HITEC) (HITEC-20170406)},
pid = {G:(DE-HGF)POF3-131 / G:(DE-Juel1)HITEC-20170406},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:32162917},
UT = {WOS:000526348400022},
doi = {10.1021/acs.jpclett.0c00568},
url = {https://juser.fz-juelich.de/record/874730},
}