METHOD FOR PRODUCING ALUMINUM ALLOY FOIL FOR SECONDARY BATTERY ELECTRODE, POSITIVE ELECTRODE PLATE FOR SECONDARY BATTERY, AND WATER ADDING DEVICE

摘要

To provide a method for producing an aluminum alloy foil for a secondary battery electrode, capable of suppressing a decrease in efficiency of coating of electrode slurry, a positive electrode plate for a secondary battery, and a water adding device.SOLUTION: A method for producing an aluminum alloy foil for a secondary battery electrode includes: a rolling step (step S10) of rolling the aluminum alloy foil while using rolling oil; a water addition step (step S13) of adjusting a water content of an oil film to a concentration of 40 ppm or more and 200 ppm or less in the oil film formed using the rolling oil as a component on a surface of the aluminum alloy foil; and a coating step (step S14) of coating electrode slurry on the aluminum alloy foil from above the oil film that has the water content having been adjusted in the water addition step.SELECTED DRAWING: Figure 3