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MM: Fachverband Metall- und Materialphysik

MM 61: Functional materials IV: Batteries III

MM 61.3: Vortrag

Donnerstag, 10. März 2016, 16:15–16:30, H52

Is it possible to achieve an all-solid-state thin-film Li-ion battery by laser assisted chemical vapor deposition (LA-CVD)? — •Christoph Loho¹, Azad Darbandi^1,2, Ruzica Djenadic^1,3, Oliver Clemens^1,2, and Horst Hahn^1,2,3 — ¹Joint Research Laboratory Nanomaterials, Darmstadt, Germany — ²Institute of Nanotechnology, Karlsruhe Institute of Technology, Karlsruhe, Germany — ³Helmholtz Institute Ulm, 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. 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. Furthermore, in the case of the garnet solid state electrolyte Li7La3Zr2O12, high voltage cathode materials and a lithium metal anode can be used to increase the energy density.

Chemical vapor deposition (CVD) is a suitable method to grow functional thin-films for Li-ion batteries, since it allows for homogeneous growth over large areas with high deposition rates and very high purity. Unique is also the capability of conformal, directional deposition in order to realize three-dimensional (3D) architectures.

In this contribution the successful deposition of LiCoO2 on different 3D architectures is reported. In addition, it is shown that the Li-ion conductivity of Li7La3Zr2O12 thin-films deposited by LA-CVD exceeds 10-6 S/cm. Finally, the assembly of an all-solid-state thin-film Li-ion battery is discussed.