To surpass the performance of current lithium-ion batteries, future generations of so-called all-solid-state batteries will require the use of a negative Li metal electrode in order to significantly improve energy densities. In this context, the platform is working on the development of thin lithium (Li) films, deposited by thermal evaporation in equipment integrated into a glove box (BaG). Compared to current Li lamination technologies, PVD (“Physical Vapor Deposition”) deposition offers better control of the surface morphologies of the negative electrode material, and the possibility of controlling significantly thinner layers (≤ 20 µm ). We are looking for a master 2 level intern to participate in developments around this theme. This will include optimizing the current Li growth process, studying the aging of Li electrodes in BaG and controlling the negative electrode electrolyte interface. The electrochemical properties of thin Li films as negative electrodes will be evaluated by mounting button cells, compared to commercial Li foils. In addition to vacuum evaporative deposition equipment, the trainee will be required to use a scanning electron microscope (SEM) to study the surface morphology of Li films and equipment for electrochemical characterizations (galvanostat-potensiostat, temperature measurements). impedances.