Solid electrolytic capacitor and method for producing solid electrolytic capacitor

A manufacturing method for a solid electrolytic capacitor that includes an anode body having a porous part on a surface thereof and a dielectric layer formed on at least a portion of a surface of the porous part, the manufacturing method comprising:

• a step (i) of forming a first solid electrolyte layer that covers at least a portion of the dielectric layer;
• and
• a step (ii) of forming a second solid electrolyte layer that covers at least a portion of the first solid electrolyte layer,
• wherein the first solid electrolyte layer contains a first conductive polymer,
• the second solid electrolyte layer contains a second conductive polymer,
• the step (i) includes:
• a step (i-a) of supplying a reaction solution containing a monomer and a silane compound to a surface of the dielectric layer;
• and
• a step (i-b) of forming the first solid electrolyte layer by polymerizing the monomer in the supplied reaction solution to form the first conductive polymer, and
• the monomer contains a compound represented by the following formula (I):
• (in the formula (I), R represents an alkyl group whose carbon number is within a range of 1 to 10).