In a context of electrification of our vehicle fleet, new generations of batteries will have increased energy densities increasing the mileage of cars. In addition, they will have to recharge very quickly (80% of the charge ~ 5 minutes). To satisfy these needs, the future batteries will have a very solid configuration with a total absence of liquid and will require a perfect mastery of all their interfaces. To do this, nanoscale layers need to be developed and integrated between each interface to stabilize the surface chemistry. These very thin layers will therefore improve the cyclability of future batteries and durability but a single layer cannot satisfy all the desired properties and it is therefore essential to develop a panel of new nanoscale films. The target equipment is a thin film deposition cluster coupling several deposition technologies by atomic layers, magnetron spraying and thermal evaporation. This unique and differentiating equipment will also integrate a glove box and in situ metrology tools to control as finely as possible the quality and composition of the deposited nanometric films. It will ensure the discovery of new materials through a combinatorial spraying approach coupled with high-throughput characterization techniques available in the Hauts-de-France region.