NOVELTY - The pump (1) has a rotor e.g. driving side rotor (5a) and driven side rotor (5b), equipped with a feeder blade (5a1) such that clearance from a frontend part of the rotor to a casing (3) is made into range of 2 times to 5 times of average particle diameter of main material particle of positive electrode active material, which is slurry for manufacturing a battery electrode or negative electrode active material. Diamond-like carbon is coated on the casing, the rotor and a surface of the feeder blade. The slurry is discharged from an ejection opening (7).    USE - Rotary pump for a strip shaped electrode e.g. positive electrode and negative electrode, of a battery e.g. laminated type battery and winding type battery, used for an electric vehicle and a hybrid vehicle.    ADVANTAGE - The rotor can be equipped with the feeder blade such that clearance from the frontend part of the rotor to the casing is made into the range of 2 times to 5 times of the average particle diameter of the main material particle of the positive electrode active material, so that strong shearing stress can be received and segregation and precipitation of binder can be suppressed, thus suppressing aggregate generation and abnormal bonding with electrically conductive imparting agent, positive electrode active material particle and negative electrode active material particle, reducing abnormality during coating process and improving yield of the battery, and hence suppressing particle destruction and damage to a wall surface of a pump housing and contamination by peeling of a slurry-pump inner surface, while formation of an application layer is attained, and obtaining battery with favorable characteristic in a reliable manner.    DETAILED DESCRIPTION - The positive electrode active material is selected from a group consisting of lithium manganese complex oxide, lithium cobalt complex oxide and electroconductivity imparting agent such as carbon black and polyvinylidene fluoride.    DESCRIPTION OF DRAWING(S) - The drawing shows a sectional view of a rotary pump for a battery.    Spaces (A, B, C, D)    Rotary pump (1)    Casing (3)    Rotation directions (4a, 4b)    Driving side rotor (5a)    Feeder blades (5a1, 5a2, 5b1, 5b2)    Driven side rotor (5b)    Inlet (6)    Ejection opening (7)