000150450 001__ 150450
000150450 005__ 20240708132716.0
000150450 037__ $$aFZJ-2014-00506
000150450 041__ $$aEnglish
000150450 1001_ $$0P:(DE-Juel1)145805$$aBünting, Aiko$$b0$$eCorresponding author$$ufzj
000150450 1112_ $$aKraftwerk Batterie$$cMünster$$d2014-03-25 - 2014-03-26$$wGermany
000150450 245__ $$aCrystallization behavior and electrochemical performance of pure LiFePO4 thin films deposited on aluminum foil by unbalanced radiofrequency (RF)-magnetron sputtering
000150450 260__ $$c2014
000150450 3367_ $$0PUB:(DE-HGF)1$$2PUB:(DE-HGF)$$aAbstract$$babstract$$mabstract$$s1390482377_18379
000150450 3367_ $$033$$2EndNote$$aConference Paper
000150450 3367_ $$2DataCite$$aOutput Types/Conference Abstract
000150450 3367_ $$2ORCID$$aOTHER
000150450 3367_ $$2DRIVER$$aconferenceObject
000150450 3367_ $$2BibTeX$$aINPROCEEDINGS
000150450 520__ $$aIn literature on sputter deposition of thin film LiFePO4, substrates like stainless steel or substrates coated with titanium or platinum were used almost exclusively. Due to the reasonable temperature stability of these materials, amorphous thin films can be crystallized over a wide temperature range. However, for commercial applications, these substrates are either too expensive or have unfavorable high densities and therefore reduce the specific energy density.

An alternative substrate material with a comparable low price and a lower density is aluminum, which is also used in standard Li Ion batteries as current collector. However, because of the low melting point of aluminum the temperature range for the crystallization of as deposited LiFePO4 films is limited to 660 °C.
The aim of this work is to characterize the crystallization and electrochemical behavior of unbalanced RF-magnetron sputtered LiFePO4 thin films on aluminum substrates. Moreover, the effect of charging and discharging on the LiFePO4 on the composition and structure is analyzed.
Pure LiFePO4 is deposited on 250 µm thick aluminum foils. Due to the unbalanced plasma, the substrates heat up to 100 °C during the deposition process. For crystallization of the LiFePO4 thin films, a subsequent annealing step at temperatures between 300 °C and 500 °C was conducted in Argon atmosphere. The structure and morphology was characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM) before and after electrochemical measurements in Sawgelok® cells with liquid electrolyte. The electrochemical performance was investigated using cyclic voltammetry and charge/discharge measurements of the LFP thin films.
000150450 536__ $$0G:(DE-HGF)POF2-435$$a435 - Energy Storage (POF2-435)$$cPOF2-435$$fPOF II$$x0
000150450 536__ $$0G:(DE-Juel1)HITEC-20170406$$aHITEC - Helmholtz Interdisciplinary Doctoral Training in Energy and Climate Research (HITEC) (HITEC-20170406)$$cHITEC-20170406$$x1
000150450 7001_ $$0P:(DE-Juel1)129580$$aUhlenbruck, Sven$$b1$$ufzj
000150450 7001_ $$0P:(DE-Juel1)145623$$aFinsterbusch, Martin$$b2
000150450 7001_ $$0P:(DE-Juel1)129594$$aBuchkremer, Hans Peter$$b3$$ufzj
000150450 909CO $$ooai:juser.fz-juelich.de:150450$$pVDB
000150450 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)145805$$aForschungszentrum Jülich GmbH$$b0$$kFZJ
000150450 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)129580$$aForschungszentrum Jülich GmbH$$b1$$kFZJ
000150450 9101_ $$0I:(DE-Juel1)VS-II-20090406$$6P:(DE-Juel1)145623$$aWissenschaftlicher Geschäftsbereich II$$b2$$kVS-II
000150450 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)129594$$aForschungszentrum Jülich GmbH$$b3$$kFZJ
000150450 9131_ $$0G:(DE-HGF)POF2-435$$1G:(DE-HGF)POF2-430$$2G:(DE-HGF)POF2-400$$3G:(DE-HGF)POF2$$4G:(DE-HGF)POF$$aDE-HGF$$bSchlüsseltechnologien$$lNANOMIKRO$$vEnergy Storage$$x0
000150450 9141_ $$y2014
000150450 9201_ $$0I:(DE-Juel1)IEK-1-20101013$$kIEK-1$$lWerkstoffsynthese und Herstellungsverfahren$$x0
000150450 980__ $$aabstract
000150450 980__ $$aVDB
000150450 980__ $$aUNRESTRICTED
000150450 980__ $$aI:(DE-Juel1)IEK-1-20101013
000150450 981__ $$aI:(DE-Juel1)IMD-2-20101013