Solid electrolytic capacitor element and solid electrolytic capacitor

• Main Author: KURIMOTO TAKUYA
• Format: Patent
• Language: Chinese; English
• Published: 07.03.2023
• Subjects: BASIC ELECTRIC ELEMENTS; CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES ORLIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE; ELECTRICITY

Provided are: a solid electrolytic capacitor in which an increase in ESR when exposed to high temperatures is suppressed by using a solid electrolytic capacitor element; the solid electrolytic capacitor element includes an anode body, a dielectric layer formed on a surface of the anode body, a solid electrolyte layer covering at least a portion of the dielectric layer, and a cathode lead-out layer covering at least a portion of the solid electrolyte layer. The cathode lead-out layer is provided with a carbon layer that is in contact with the solid electrolyte layer and covers at least a portion of the solid electrolyte layer. The carbon layer contains a carbonaceous material and a cyclodextrin compound in which the concentration of a saturated aqueous solution at 25 DEG C is 1.5 mass% or more. 本发明提供通过使用如下的固体电解电容器元件、从而抑制暴露于高温的情况下的ESR的增加的固体电解电容器，所述固体电解电容器元件具备：阳极体、形成于所述阳极体的表面的电介质层、覆盖所述电介质层的至少一部分的固体电解质层、以及覆盖所述固体电解质层的至少一部分的阴极引出层。所述阴极引出层具备接触所述固体电解质层、并且覆盖所述固体电解质层的至少一部分的碳层。所述碳层包含碳质材料、和25℃下的饱和水溶液的浓度为1.5质量％以上的环糊精化合物。