TY  - JOUR
AU  - Bünting, Aiko
AU  - Uhlenbruck, Sven
AU  - Sebold, Doris
AU  - Buchkremer, H. P.
AU  - Vassen, Robert
TI  - Three-Dimensional, Fibrous Lithium Iron Phosphate Structures Deposited by Magnetron Sputtering
JO  - ACS applied materials & interfaces
VL  - 7
IS  - 40
SN  - 1944-8252
CY  - Washington, DC
M1  - FZJ-2016-01196
SP  - 22594 - 22600
PY  - 2015
AB  - Crystalline, three-dimensional (3D) structured lithium iron phosphate (LiFePO4) thin films with additional carbon are fabricated by a radio frequency (RF) magnetron-sputtering process in a single step. The 3D structured thin films are obtained at deposition temperatures of 600 °C and deposition times longer than 60 min by using a conventional sputtering setup. In contrast to glancing angle deposition (GLAD) techniques, no tilting of the substrate is required. Thin films are characterized by X-ray diffraction (XRD), Raman spectrospcopy, scanning electron microscopy (SEM), cyclic voltammetry (CV), and galvanostatic charging and discharging. The structured LiFePO4 + C thin films consist of fibers that grow perpendicular to the substrate surface. The fibers have diameters up to 500 nm and crystallize in the desired olivine structure. The 3D structured thin films have superior electrochemical properties compared with dense two-dimensional (2D) LiFePO4 thin films and are, hence, very promising for application in 3D microbatteries.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000363001500057
C6  - pmid:26381359
DO  - DOI:10.1021/acsami.5b07090
UR  - https://juser.fz-juelich.de/record/281503
ER  -