CAPACITOR AND MANUFACTURING METHOD THEREOF

To provide a capacitor of decreased equivalent series resistance, and a manufacturing method thereof.SOLUTION: A capacitor (10) comprises: a positive electrode (11) composed of a valve metal porous body; a dielectric layer (12) made of oxide of the valve metal; a negative electrode (13) made of a conductive substance and provided on a side of the dielectric layer opposite to the positive electrode; and a solid electrolyte layer (14) formed between the dielectric layer and the negative electrode. The solid electrolyte layer contains a conductive complex including a π conjugate-based conductive polymer and a polyanion. The solid electrolyte layer is formed by a cured product of a particular coating material composition. The coating material composition contains a particular conductive polymer fluid dispersion including the conductive complex and a dispersion medium.SELECTED DRAWING: Figure 1 【課題】等価直列抵抗が低減したキャパシタ及びその製造方法を提供する。【解決手段】弁金属の多孔質体からなる陽極（１１）と、前記弁金属の酸化物からなる誘電体層（１２）と、前記誘電体層の、前記陽極と反対側に設けられた導電物質製の陰極（１３）と、前記誘電体層及び前記陰極の間に形成された固体電解質層（１４）とを具備し、前記固体電解質層は、π共役系導電性高分子及びポリアニオンを含む導電性複合体を含有し、前記固体電解質層は、特定の塗料組成物の硬化物によって形成されたものであり、前記塗料組成物は、前記導電性複合体と分散媒とからなる特定の導電性高分子分散液を含む、キャパシタ（１０）。【選択図】図１