Solid electrolytic capacitor and method for manufacturing same

A method for manufacturing a solid electrolytic capacitor comprising:

• a cathode formation process having a coating step of applying a carbon slurry having carbon particles to a surface of an oxide layer composed of an oxide of a valve metal on a surface of a cathode substrate composed of the valve metal and having an etching pit and drying the carbon slurry to form a slurry layer, and a pressing step of pressing the slurry layer to push the carbon particles into the etching pit and make the carbon particles penetrate through the oxide layer to form a carbon coating layer having an entry area entering the etching pit and a penetration area penetrating through the oxide layer and conducting with the cathode substrate;
• an anode formation process of forming a dielectric layer by oxidizing a surface of an anode substrate composed of a valve metal;
• and
• an electrolyte formation process of forming a solid electrolyte layer having a conductive polymer between the carbon coating layer of the cathode and the dielectric layer of the anode, wherein the pressing step in the cathode formation process is earned out until the entry area of the carbon coating layer has an average length of one fifth or more of an average length of the etching pit.