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O: Fachverband Oberflächenphysik

O 16: SYLI: Interfacial Challenges in Solid-State Li Ion Batteries - Interface-dominated behaviour

O 16.3: Vortrag

Montag, 20. März 2017, 16:15–16:30, IFW A

Microstructural Properties of Li1.3Al0.3Ti1.7(PO4)3 Solid-State Electrolyte — •Deniz Cihan Gunduz^1,2, Roland Schierholz¹, Shicheng Yu^1,2, Andreas Mertens^1,2, Hermann Tempel¹, Hans Kungl¹, and Rüdiger-A Eichel^1,2,3 — ¹Forschungszentrum Jülich, Institute of Energy and Climate Research, IEK-9, 52425 Jülich, Germany — ²RWTH Aachen University, Institute of Physical Chemistry, 52074 Aachen, Germany — ³Jülich-Aachen Research Alliance, Section JARA-Energy, Germany

Lithium-ion batteries are important in daily life. One task is to replace liquid electrolytes by solid ones and Li1.3Al0.3Ti1.7(PO4)3 (LATP) is a promising candidate exhibiting high ionic conductivities. For further development it is important to understand the influence of the microstructure on the ionic conductivity. Solid state electrolytes have been mainly investigated via means of electron microscopy (Scanning Electron Microscopy as well as Transmission Electron Microscopy). Here we combine these techniques with Laser Scanning Microscopy (LSM) to study the microstructure, such as grain size, grain boundary width, porosity and secondary phase content and distribution of LATP pellets sintered at different temperatures; and draw a relation to impedance measured on these pellets.