Xin Gao

 

Preparation and Characterization of Li1.3Al0.3Ti1.7(PO4)3 Electrolyte Materials for All-Solid-State Lithium-ion Batteries

The use of the all-solid state lithium-ion batteries, which utilize an inorganic solid electrolyte, matches high safety standards because it does not contain any organic electrolyte solution that presents a hazard resulting from overheating. As a key material of all-solid-state batteries, ionic conductive materials have been widely studied in the field of materials science, polymer science, electrochemistry, and solid-state chemistry. Among these materials, Li1.3Al0.3Ti1.7(PO4)3 (LATP) is one of the most promising candidates for solid state electrolyte due to its high ionic conductivity.

In the scope of this master thesis, LATP pellets will be prepared via powder compaction followed by cold isostatic pressing and sintering. The crystal structure, microstructures as well as the relative densities of the prepared LATP ceramics will be characterized. Stainless steel block cells will be utilized to measure the ionic conductivity of the ceramics. In further work, the pellets will be integrated in an all-solid-state Li-ion battery and investigated with respect to their electrochemical performance.