A method of making an electrode structure, and a double layer capacitor including
the electrode structure, the method includes the steps of: applying a first slurry
including conducting carbon powder and a binder to a current collector plate; curing
the applied first slurry to form a primary coating; applying a second slurry that
includes activated carbon powder, a solvent and a binder to the primary coating;
and curing the applied second slurry to form a secondary coating, thereby forming
a first electrode. In variations, additional primary and secondary coatings may
be formed on both sides of the collector plate.