TEM experiments.

Nowadays Li-ion batteries are the dominant technology for portable electronics and automotive applications. This project aims at further development of the new cathode materials for rechargeable batteries, including Li and Na batteries. It involves collaboration between EMAT and College de France (Paris). The group of prof. J.-M. Tarascon at College de France is specialized in synthesis and electrochemical characterization of a wide variety of novel cathode materials for rechargeable batteries. Their structural transformations upon charge/discharge processes cannot be always comprehensively understood using only bulk diffraction methods (X-ray/neutron), hence advanced transmission electron microscopy is often required. EMAT provides in depth characterization of the materials down to the atomic level using a variety TEM method, including electron diffraction methods and imaging techniques (HAADF- and ABF-STEM) that are often combined with chemical analysis using spectroscopy (STEM-EDX and STEM-EELS). As an outcome, the structure, composition and valence state of cathode materials can be directly visualized at different charge/discharge states, allowing for further development of new battery technologies.

Keywords:PHYSICS

Disciplines:Classical physics, Elementary particle and high energy physics, Other physical sciences, Ceramic and glass materials, Materials science and engineering, Semiconductor materials, Other materials engineering

Project type:Service project