Apparatus for the production of active material composite powder and process for the production of active material composite powder

摘要

An apparatus for producing an active material composite powder by coating the surfaces of active material particles or composite particles obtained by coating the surfaces of the active material particles with an oxide-based solid electrolyte with a sulfide-based solid electrolyte includes: a storage body having a cylindrical inner wall surface (12), and a A rotary body (13) disposed in an inner space surrounded by the inner wall surface (12) of the storage body having a rotary shaft (14) aligned with a central axis (X) of the inner space and containing a plurality of blades (15), wherein an end part (19) of each blade (15) on a front side in a rotational / moving direction of the rotary body (13) has such a tapered portion that a thickness of the blade (15) gradually becomes a blade end side tapered, and the end portion (19) of each sheet (15) on a Rü rear side in the rotating / moving direction of the rotary body (13) has such a curved end surface (21) that the curved end surface (21) faces the inner wall surface (12) of the storage body and is generally parallel to the inner wall surface (12) of the storage body.