The present invention relates to a method of producing a solid electrolytic capacitor, comprising a step of forming a dielectric film on the surface of the valve-acting metal having fine pores and a step of forming a solid electrolyte layer containing a conductive polymer on the dielectric film; wherein the solid electrolyte layer containing the conductive polymer is formed without using an oxidizing agent by:
(i) a method of polymerizing at least one of the compounds (A1) represented by the formula (1) disclosed in the description in the presence of a compound (B) having sulfo group;
(ii) a method of copolymerizing at least one compound (A2) represented by the formula (2); and
(iii) a method of polymerizing at least one of the compounds (A1) represented by the formula (1) and at least one of the compounds (A2) represented by the formula (2). According to the present invention, it is possible to form a solid electrolyte film containing a conductive polymer on the dielectric film on the surface of valve-acting metal having fine pores by simple steps without employing a cumbersome polymerization step, film-formation step, or a purification step; and to provide a solid electrolytic capacitor having a low ESR, a high capacity achievement rate, and excellent low leakage current characteristics.
本发明涉及一种生产固体电解电容器的方法,包括在具有细孔的阀动
金属表面上形成电介质膜的步骤和在电介质膜上形成含有导电聚合物的固体电解质层的步骤;其中,含有导电聚合物的固体电解质层是在不使用氧化剂的情况下通过以下方法形成的:
(i) 在具有磺基的化合物(B)存在下聚合至少一种由描述中公开的式(1)代表的化合物 (A1)的方法;
(ii) 至少一种由式(2)表示的化合物(A2)的共聚合方法;和
(iii) 至少一种由式(1)代表的化合物(A1)和至少一种由式(2)代表的化合物(A2)聚合的方法。根据本发明,可以通过简单的步骤在具有细孔的阀动
金属表面的电介质膜上形成含有导电聚合物的固体电解质膜,而无需采用繁琐的聚合步骤、成膜步骤或纯化步骤;并提供具有低 ESR、高容量实现率和优异的低漏电流特性的固体电解电容器。