Battery electrode production method

A method for producing a battery electrode having a configuration in which a compound material layer containing an active material and a binder is retained on a current collector, comprising:

• forming protrusions composed of a polymer on a surface of the current collector;
• forming a first layer of a binder solution in a liquid phase, comprising a binder and a solvent, over the polymer protrusions on the current collector, wherein the first layer of the binder solution is formed such that a distal end of the polymer protrusions protrudes above an upper surface of the first layer of the binder solution and a proximal end of the polymer protrusions contacts the current collector;
• depositing a liquid phase bilayer consisting of the first layer of the binder solution and a second layer of a compound material paste comprising the active material and a solvent on the current collector by applying the compound material paste over the first layer of the binder solution;
• and
• drying the liquid phase bilayer.