Large Area Magnetron Sputtered All-Solid-State Batteries with ALD Buffer Layers - ARISER

Project summary

This project aims to develop a large area all-solid-state battery (ASSB) and proposes two innovative approaches in order to improve the performance of proposed ASSB. The performance of ASSBs could be improved by increasing the ionic conductivity of electrolyte layer and engineering the electrode/electrolyte interfaces. Since a conventional high temperature processing causes Li-loss from the electrolyte, stoichiometry changes unintentionally. Therefore, firstly, a novel dual-deposition technique will be used to fabricate high Li-ion conductive electrolyte layer with proper stoichiometry. Secondly, in order to improve the electrode/electrolyte interface, a new approach in which ALD-grown mixed-metal-oxide buffer nanolayers with various proportions will be developed. Applicability of the proposed ASSB structure will be tested in large-scale (15 cm x 15 cm) to achieve higher capacities and energy densities. ASSBs application areas could be in electric vehicles.