Method of manufacturing conductive polymer electrolytic capacitor

1. A method of manufacturing a conductive polymer electrolytic capacitor having a capacitor element including an electrolyte containing a conductive polymer prepared from a monomer (A) and an ionic liquid (B) and an electrode consisting of a valve metal, comprising the step of:

aging said capacitor element including said electrolyte by applying an aging voltage y (V) to said capacitor element including said electrolyte to satisfy the following formula (2):

24≦ y≦x (48< x )  (2)

(in the above formula (2), x represents a forming voltage (V) for said valve metal).

2. The method of manufacturing a conductive polymer electrolytic capacitor according to claim 1 , comprising the step of aging said capacitor element including said electrolyte by applying said aging voltage y (V) to satisfy the following formula (4):

28.8≦ y≦ 0.88 x (48< x )  (4)

(in the above formula (4), x represents the forming voltage (V) for said valve metal).

3. The method of manufacturing a conductive polymer electrolytic capacitor according to claim 1 , wherein

the molar ratio N B /N A between said monomer (A) and said ionic liquid (B) is 0.01/1 to 0.5/1.

4. The method of manufacturing a conductive polymer electrolytic capacitor according to claim 1 , wherein

said monomer (A) is at least one monomer selected from a group consisting of pyrrole and a derivative thereof, thiophene and a derivative thereof, aniline and a derivative thereof and quinone and a derivative thereof.

5. The method of manufacturing a conductive polymer electrolytic capacitor according to claim 1 , wherein

an anionic component of said ionic liquid (B) includes at least one component selected from a group consisting of a carboxylate anion derivative, a sulfonyl imide anion derivative, a fluoroborate anion derivative, a nitrate anion derivative, a cyanoimide anion derivative, a sulfonate anion derivative and an alkoxysulfonate anion derivative.

6. The method of manufacturing a conductive polymer electrolytic capacitor according to claim 5 , wherein

said sulfonate anion derivative is an anionic component expressed in the following general formula (I):

R 1 —SO 3 −   (I)

(in the above general formula (I), R 1 represents an aliphatic hydrocarbon radical having a carbon number of 1 to 30, which may be substituted by an O, S, NHCO or CO radical, and may contain at least one fluorine atom).

7. The method of manufacturing a conductive polymer electrolytic capacitor according to claim 6 , wherein

R 1 in said general formula (I) is a straight-chain saturated hydrocarbon radical having a carbon number of 1 to 7.

8. The method of manufacturing a conductive polymer electrolytic capacitor according to claim 5 , wherein

said alkoxysulfonate anion derivative is an anionic component expressed in the following general formula (II):

R 2 —OSO 3 −   (II)

(in the above general formula (II), R 2 represents an aliphatic hydrocarbon radical having a carbon number of 1 to 30, which may be substituted by an O, S, NHCO or CO radical, and may contain at least one fluorine atom).

9. The method of manufacturing a conductive polymer electrolytic capacitor according to claim 8 , wherein

R 2 in said general formula (II) represents a straight-chain saturated hydrocarbon radical having a carbon number of 1 to 7.

10. The method of manufacturing a conductive polymer electrolytic capacitor according to claim 1 , wherein

a cationic component of said ionic liquid (B) includes at least one component selected from a group consisting of ammonium and a derivative thereof, imidazolinium and a derivative thereof, pyridinium and a derivative thereof, pyrrolidinium and a derivative thereof, pyrrolinium and a derivative thereof, pyrazinium and a derivative thereof, pyrimidinium and a derivative thereof, triazonium and a derivative thereof, triazinium and a derivative thereof, triazine derivative cation, quinolinium and a derivative thereof, isoquinolinium and a derivative thereof, indolinium and a derivative thereof, quinoxalinium and a derivative thereof, piperazinium and a derivative thereof, oxazolinium and a derivative thereof, thiazolinium and a derivative thereof, morpholinium and a derivative thereof and piperazine and a derivative thereof.