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@ARTICLE{Bnting:188043,
author = {Bünting, A. and Uhlenbruck, S. and Dellen, C. and
Finsterbusch, M. and Tsai, C.-L. and Sebold, D. and
Buchkremer, H. P. and Vaßen, R.},
title = {{I}nfluence of titanium nitride interlayer on the
morphology, structure and electrochemical performance of
magnetron-sputtered lithium iron phosphate thin films},
journal = {Journal of power sources},
volume = {281},
issn = {0378-7753},
address = {New York, NY [u.a.]},
publisher = {Elsevier},
reportid = {FZJ-2015-01521},
pages = {326 - 333},
year = {2015},
abstract = {Pure LiFePO4 (LFP) thin films with different thicknesses
are deposited at room temperature by a radio frequency (RF)
magnetron-sputtering process. Ti foils with and without
titanium nitride (TiN) coating as well as thermally oxidized
Si wafers coated with Ti or TiN are used as substrates. In a
subsequent annealing step, LiFePO4 thin films are
crystallized at 500 °C. The interaction between Ti and
LiFePO4 as well as between TiN and LiFePO4 is characterized
by means of X-ray diffraction (XRD), scanning electron
microscope (SEM), energy dispersive X-ray analysis (EDX),
secondary ion mass spectrometry (SIMS), cyclic voltammetry
(CV) and galvanostatic measurements. A severe diffusion of
Ti into LiFePO4 is found and leading to the formation of
impurity phases which resulting in disturbing
crystallization behaviour and rough surfaces. Moreover, 80
nm LiFePO4 thin films do not show the desired
electrochemical characteristics when they are deposited on
Ti foils directly. By using a TiN interlayer, the diffusion
of Ti into LiFePO4 can be blocked resulting in smooth
morphologies and improving crystallisation behaviour.
Impurity phases do not develop and all samples exhibit the
expected electrochemical characteristics. Therefore, TiN is
a promising candidate for the use as a current collector in
all-solid-state batteries with LiFePO4 electrodes.},
cin = {IEK-1},
ddc = {620},
cid = {I:(DE-Juel1)IEK-1-20101013},
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},
UT = {WOS:000350930600039},
doi = {10.1016/j.jpowsour.2015.02.003},
url = {https://juser.fz-juelich.de/record/188043},
}