Electroconductive composition, electrical conductor, laminate and method for producing same, electroconductive film, and solid electrolyte condenser

1. An electroconductive composition comprising:

an electroconductive polymer (A) comprising a sulfonic acid group and/or a carboxylic acid group, and

a basic compound (B) having two or more nitrogen atoms selected from nitrogen-containing heterocyclic compounds substituted with a primary, secondary, or tertiary amino group, and compounds having two or more nitrogen-containing heterocycles, provided said basic compound (B) is not a triaminotriazine.

2. The electroconductive composition according to claim 1 , wherein the basic compound (B) has two or more nitrogen-containing heterocycles.

3. The electroconductive composition according to claim 1 , further comprising a basic compound (C) having one nitrogen atom.

4. An electroconductive composition comprising:

an electroconductive polymer (A) comprising a sulfonic acid group and/or a carboxylic acid group,

a basic compound (B) having two or more nitrogen acorns, and

a basic compound (C) having one nitrogen atom,

wherein a boiling point of the basic compound (C) is lower than a boiling point of the basic compound (B).

5. The electroconductive composition according to claim 3 , wherein a base dissociation constant (pKb) of the basic compound (C) at 25° C. is lower than a base dissociation constant (pKb) of the basic compound (B) at 25° C.

6. The electroconductive composition according to claim 1 , further comprising a water soluble or water dispersible polymer (D), which is different from the electroconductive polymer (A).

7. The electroconductive composition according to claim 1 , wherein a base dissociation constant (pKb) of the basic compound (B) at 25° C. is 4.5 or more.

8. The electroconductive composition according to claim 1 , wherein the basic compound (B) has a conjugated structure.

9. The electroconductive composition according to claim 1 , wherein the electroconductive polymer (A) comprises a unit represented by a formula (1):

wherein:

each of R 1 to R 4 is independently selected from the group consisting of a hydrogen atom, a linear or branched alkyl group having 1 to 24 carbon atoms, a linear or branched alkoxy group having 1 to 24 carbon atoms, an acidic group, a hydroxy group, a nitro group, and a halogen atom;

with the proviso that at least one of R 1 to R 4 is an acidic group selected from the group consisting of a sulfonic acid group and a carboxylic acid group.

10. An electrical conductor comprising the electroconductive composition according to claim 1 .

11. An electrical conductor comprising an electroconductive composition, the electroconductive composition comprising:

an electroconductive polymer (A) comprising a sulfonic acid group and/or a carboxylic acid group, and

a basic compound (B) having two or more nitrogen atoms,

wherein a film thickness of said electrical conductor is 20 to 100 nm, a surface resistance value is 1×10 10 Ω/sq. or less at a temperature of 25° C. and a humidity of 50%, and a change in a surface resistance value is 10 times or less after a week in an environment with a temperature of 25° C. and a humidity of 50%.

12. An electrical conductor comprising an electroconductive composition, the electroconductive composition comprising:

an electroconductive polymer (A) comprising a sulfonic acid group and/or a carboxylic acid group, and

a basic compound (B) having two or more nitrogen atoms,

wherein a film thickness of said electrical conductor is 20 to 100 nm, a surface resistance value is 1×10 10 Ω/sq. or less at a temperature of 25° C. and a humidity of 50%, and a change in a surface resistance value is 10 times or less after immersion for 10 minutes in water at a temperature of 25° C. followed by drying.

13. A laminate comprising the electrical conductor according to claim 10 laminated on at least one surface of a substrate.

14. A method for manufacturing a laminate, comprising: applying the electroconductive composition according to claim 3 on at least one surface of a substrate, and

heating and drying the applied electroconductive composition to form an electrical conductor.

15. An electroconductive film comprising the electrical conductor according to claim 10 .

16. A solid electrolyte condenser comprising a positive electrode comprising a porous body of a valve metal, a dielectric layer formed by oxidation of a surface of the positive electrode, and one or more solid electrolyte layers formed on a surface side of the dielectric layer, in which at least one layer of the solid electrolyte layers comprises the electroconductive composition of claim 1 .

17. The solid electrolyte condenser according to claim 16 , wherein the electroconductive polymer (A) satisfies the following condition:

a volume average particle diameter of a minimum particle diameter distribution, which includes a peak with the minimum particle diameter among one or more peaks that are obtained by using an electroconductive polymer solution containing the electroconductive polymer (A) at 1% by mass and measuring particle diameter distribution based on dynamic light scattering method, is less than 26 nm.

18. The electroconductive composition according to claim 1 , wherein the electroconductive polymer (A) comprises a sulfonic acid group.

19. The electroconductive composition according to claim 1 , wherein the electroconductive polymer (A) comprises a carboxylic acid group.

20. The electroconductive composition according to claim 1 , wherein the basic compound (B) having two or more nitrogen atoms is a nitrogen-containing heterocyclic compound substituted with a primary, secondary, or tertiary amino group.