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Materials and processes
A deeper understanding of the aging processes at work inside electrochemical systems like batteries is crucial to extending system lifespans. New insights can be used to improve earlier-stage processes and enhance material microstructures to boost the materials’ performance.
Researchers at CEA Tech institute Liten conduct in situ and in operando observations of what happens inside batteries during actual operation. These observations of materials—at the sub-micron and nano scales—are highly reliable since there are no sudden stops and starts to the processes. The researchers use state-of-the-art resources at the nanocharacterization platform: X-ray analysis, ion beam analysis, surface analysis, near-field microscopy, magnetic resonance imaging, optical imaging, sample preparation, and electron microscopy. CEA Tech also leverages privileged access to both the large European ESRF (European Synchrotron Radiation Facility) instruments and ILL (Institut Laue-Langevin).
ALL TECHNOLOGY PLATFORMS
HoloView software can generate electronic holography images with currently-unrivalled spatial resolution and sensitivity.
Researchers at Leti, a CEA Tech institute, recently developed an electron holography technique capable of imaging material structures with a spatial resolution of just one atom.
For the first time ever, scientists at Liten used XPS to observe changes in the chemical composition of lithium-ion batteries during operation. The purpose of the research was to gain a deeper understanding of battery degradation mechanisms.
The Nanocharacterization platform’s two Titan transmission electron microscopes recently received some major upgrades. They now provide more than just images, delivering detailed information on the chemistry of the materials being analyzed.
Silicon electrodes are among the frontrunners in the race to replace the graphite electrodes currently used in Lithium batteries. Several imaging and spectroscopy techniques have provided a deeper understanding of the mechanisms that underpin silicon electrode degradation.
How to collaborate with CEA Tech teams ?
CEA is a French government-funded technological research organisation in four main areas: low-carbon energies, defense and security, information technologies and health technologies. A prominent player in the European Research Area, it is involved in setting up collaborative projects with many partners around the world.