ELECTRODE STRUCTURE, CAPACITOR AND METHOD FOR PRODUCING ELECTRODE STRUCTURE

摘要

Disclosed is an electrode structure which is excellent in adhesion between a base aluminum material and a dielectric layer. This electrode structure maintains a desired withstand voltage and enables to obtain a high capacitance. Also disclosed are a method for producing such an electrode structure and a capacitor comprising such an electrode structure. Specifically disclosed is an electrode structure comprising an aluminum material, a dielectric layer formed on the surface of the aluminum material and containing a valve metal, and an intervening layer formed between the aluminum material and the dielectric layer and containing aluminum and carbon. Also specifically disclosed is a method for producing an electrode structure comprising a step for forming a dielectric precursor layer containing a valve metal on the surface of an aluminum material, a step for placing the aluminum material provided with the dielectric precursor layer in a space containing a hydrocarbon-containing substance, and a step for heating the aluminum material provided with the dielectric precursor layer in the space containing a hydrocarbon-containing substance.