(a) An aerosol including an active material, a binder, and a gas is made. (b) A film-like flow of the aerosol is formed. (c) An electrically-charged region is formed by corona discharge. (d) The film-like flow passes through the electrically-charged region. (e) The film-like flow is introduced into an electric field after passing through the electrically-charged region. In the electric field, an active material layer is formed by adhering a solid component of the film-like flow onto a surface of a substrate by electrostatic force.

The angle adapter according to the invention for a powder spray device comprises an upstream housing, which has an upstream powder channel, a connection to the powder spray device, and a longitudinal axis, about which the housing can be rotated. The powder spray device additionally comprises a pivot body comprising a downstream powder channel, which connects to the upstream powder channel The pivot body can be pivoted about a pivot axis, whereby the pivot axis runs obliquely to the longitudinal axis. A nozzle is additionally provided, which connects to the pivot body. Several webs and grooves are provided at the housing and pivot body, whereby the webs protrude into the grooves, and the webs and grooves are formed so that they form a labyrinth. A high voltage line is furthermore provided, which extends from the upstream housing via the pivot body all the way into the nozzle and which is formed there as high voltage electrode.