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@ARTICLE{Borghols:9424,
author = {Borghols, W.J.H. and Lützenkirchen-Hecht, D. and Haake, U.
and Chan, W. and Lafont, U. and Kelder, E.M. and van Eck,
E.R.H. and Kentgens, A.P.M. and Mulder, F.M. and Wagemaker,
M.},
title = {{L}ithium {S}torage in {A}morphous {T}i{O}2
{N}anoparticles},
journal = {Journal of the Electrochemical Society},
volume = {157},
issn = {0013-4651},
address = {Pennington, NJ},
publisher = {Electrochemical Society},
reportid = {PreJuSER-9424},
pages = {A582 - A588},
year = {2010},
note = {We thank HASYLAB for the provision of beam time and the
financial support of our experiments and D. Zajac and D.
Novikov for their excellent support at the beam lines. The
financial support from the Netherlands Organization for
Scientific Research (NWO) for the VIDI grant of M. W. is
gratefully acknowledged. NWO is further acknowledged for
financing the solid-state NMR facility for advanced material
science at the Radboud University. We thank the Alistore
network for providing access to TEM measurements and the
electrochemical laboratories.},
abstract = {Amorphous titanium oxide nanoparticles were prepared from
titanium isopropoxide. In situ measurements reveal an
extraordinary high capacity of 810 mAh/g on the first
discharge. Upon cycling at a charge/discharge rate of 33.5
mA/g, this capacity gradually decreases to 200 mAh/g after
50 cycles. The origin of this fading was investigated using
X-ray absorption spectroscopy and solid-state nuclear
magnetic resonance. These measurements reveal that a large
fraction of the total amount of the consumed Li atoms is due
to the reaction of H2O/OH species adsorbed at the surface to
Li2O, explaining the irreversible capacity loss. The
reversible capacity of the bulk, leading to the Li0.5TiO2
composition, does not explain the relatively large
reversible capacity, implying that part of Li2O at the TiO2
surface may be reversible. The high reversible capacity,
also at large (dis)charge rates up to 3.35 A/g (10C), makes
this amorphous titanium oxide material suitable as a low
cost electrode material in a high power battery.},
keywords = {J (WoSType)},
cin = {IFF-4 / IFF-5 / Jülich Centre for Neutron Science JCNS
(JCNS) ; JCNS},
ddc = {540},
cid = {I:(DE-Juel1)VDB784 / I:(DE-Juel1)VDB785 /
I:(DE-Juel1)JCNS-20121112},
pnm = {BioSoft: Makromolekulare Systeme und biologische
Informationsverarbeitung / Großgeräte für die Forschung
mit Photonen, Neutronen und Ionen (PNI)},
pid = {G:(DE-Juel1)FUEK505 / G:(DE-Juel1)FUEK415},
shelfmark = {Electrochemistry / Materials Science, Coatings $\&$ Films},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000276555300005},
doi = {10.1149/1.3332806},
url = {https://juser.fz-juelich.de/record/9424},
}