Jean Philippe Beaupain

Solid-state batteries (SSBs) with Li-ion conductive electrolytes made from polymers, thiophosphates (sulfides) or oxides instead of liquid electrolytes have different challenges in material development and manufacturing. For oxide-based SSBs, the co-sintering of a composite cathode is one of the main challenges. High process temperatures cause undesired decomposition reactions of the active material and the solid electrolyte.

Literatur 1 und : NCA, NCM811, and the Route to Ni-Richer Lithium-Ion Batteries, Energies 13 (2020) 23, 6363. 2, , und : On the Functionality of Coatings for Cathode Active Materials in Thiophosphate-Based All-Solid-State Batteries, Adv. Energy Mater. 9 (2019) 24, 1900626. 3, , , , und : Rational Design of Coating Ions via Advantageous Surface Reconstruction in High-Nickel Layered Oxide Cathodes for Lithium-Ion Batteries, Adv. Energy Mater 11 (2021) 38, 2101112.

2. Materials and Methods 2.1. Preparation of LATP-LFP Pellets The powder mixtures were prepared by using commercial C-LiFePO4 (Clariant Life Power® PA30, Muttenz, Switzerland) and LATP synthesized via the sol-gel method. A detailed description of the oxide–solid electrolyte synthesis and the ionic conductivity of conventionally sintered LATP of 3.8 × 10−4 S/cm is given by Waetzig et al. [12].