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MM: Fachverband Metall- und Materialphysik

MM 14: Functional Materials III - Li ion batteries

MM 14.5: Talk

Monday, March 31, 2014, 16:45–17:00, IFW A

Functional Thin-Films for Li-Ion Batteries Grown by Novel CO2-Laser Assisted Chemical Vapor Deposition — •Christoph Loho¹, Azad Darbandi^{1, 2}, Ruzica Djenadic^{1, 3}, Oliver Clemens^{1, 2}, and Horst Hahn^{1, 2, 3} — ¹Joint Research Laboratory Nanomaterials, Technical University of Darmstadt and Karlsruhe Institute of Technology, Germany — ²Institute of Nanotechnology, Karlsruhe Institute of Technology, Germany — ³Helmholtz Institute Ulm, Germany

Over the last decades a progressive miniaturization of electronic components took place. As a result there is an increasing demand for micro-sized power sources, which drives the current research on thin-film batteries. Among the applications are RFID tags, pacemakers, energy harvesting and lab-on-a-chip devices. In this respect an all-solid-state thin-film battery is desirable, since its excellent safety properties and easy integration in microelectronics are outstanding advantages.

We report on the functional thin-film synthesis via CO2-laser assisted chemical vapor deposition (LACVD). The use of a CO2-laser as part of the precursor delivery system is unique in the field of thin-film deposition so far and thus will be introduced. Furthermore, the characterization of a cathode (LiCoO2) as well as solid-state electrolyte (Li7La3Zr2O12) material for thin-film Li-ion batteries is presented. In addition to results on the microstructure and composition of these materials we give an account of their electrochemical performance.