METHOD FOR PRODUCING AN ELECTRODE POWDER MIXTURE FOR A BATTERY CELL

1 . A method for producing an electrode powder mixture of a battery cell, in which a powdered active material is provided with a powdered first polymer binder by means of electrostatic coating.

2 . The method according to claim 1 , wherein the powdered active material is provided with a powdered first conductive additive by means of electrostatic coating.

3 . The method according to claim 2 , wherein the first polymer binder is melted after the electrostatic coating.

4 . The method according to claim 2 , wherein the active material coated with the first polymer binder is mixed with a further binder.

5 . The method according to claim 1 , wherein a powdered second conductive additive is provided with a powdered second polymer binder by means of electrostatic coating and is then mixed with the active material coated with the first polymer binder.

6 . The method according to claim 5 , ( 38 ) the first polymer binder and the second polymer binder are melted before the mixing.

7 . The method according to claim 1 , ( 38 ) the grain size of the powdered first polymer binder is selected to be smaller than or equal to the grain size of the powdered active material.

8 . A method for producing an electrode of a battery cell, in which an electrode powder mixture is produced according to a method for producing an electrode powder mixture for a battery cell according to claim 1 and the electrode powder mixture is applied to a conductor.

9 . The method according to claim 8 , ( 38 ) the electrode powder mixture applied to the conductor is heated and pressed and/or calendered.