Abstract: A solid electrolytic capacitor that prevents leakage current from increasing. The solid electrolytic capacitor includes an anode, a cathode, and a dielectric layer arranged between the anode and the cathode in contact with the cathode. The dielectric layer includes a plurality of recesses arranged in the surface of the dielectric layer, each recess having an opening in an interface with the cathode. Each of the recesses has a depth that is 0.1 to 1.5 times the diameter of the opening.

Abstract: A solid electrolytic capacitor comprising an anode body, a dielectric layer placed on the surface of the anode body, a conductive polymer layer placed on the surface of the dielectric layer, and a housing accommodating at least the anode body, the dielectric layer and the conductive polymer layer, wherein a water-retaining layer having higher water absorption than that of the housing is placed between the conductive polymer layer and the housing.

Abstract: An aspect of the invention provides a solid electrolytic capacitor that comprises: an anode formed of a valve metal or an alloy mainly made of a valve metal; a dielectric layer formed on a surface of the anode; a first conducting polymer layer formed on the dielectric layer, the first conducting polymer layer containing a non-ionic surfactant; a second conducting polymer layer formed on the first conducting polymer layer; and a cathode layer formed on the second conducting polymer layer.

Abstract: Provided is a solid electrolytic capacitor comprising an anode of a porous body formed of a valve metal or its alloy, a dielectric layer formed on the surface in the inside part of the porous body and on the surface in the outer peripheral part thereof, a conductive polymer layer formed on the dielectric layer, a cathode layer formed on the conductive polymer layer in the outer peripheral part of the porous body, and an anode lead of which one end is embedded inside the anode, wherein the conductive polymer layer in the first region which is in the inside part of the porous body and the periphery around the anode lead as the center is formed of a polypyrrole layer, and the conductive polymer layer in the second region which is the periphery around the first region is formed by laminating a polypyrrole layer on a polyethylenedioxythiophene layer.

Abstract: A solid electrolyte capacitor that prevents the capacitance from decreasing. The solid electrolyte capacitor includes an anode, a cathode, and a dielectric layer, which is arranged between the anode and the cathode in contact with the cathode. The dielectric layer includes a plurality of recesses arranged at an interface between the dielectric layer and the cathode.

Abstract: Solid electrolytic capacitors and methods for manufacturing the solid electrolytic capacitor are provided. The solid electrolytic capacitor has excellent reliability by virtue of stress reduction inside an electrolyte layer, which alleviates decrease in capacitance, increase of ESR and leakage current, and suppression of short circuits. The anode of the solid electrolytic capacitor is formed of a valve metal or an alloy thereof as a porous body. Subsequently, a dielectric layer is formed on a surface inside the porous body of the anode, and the electrolyte layer is formed on a surface of the dielectric layer. Here, the electrolyte layer is formed of a conductive polymer and the electrolyte layer inside the porous body of the anode contains an elastomer. Thereafter, a cathode is formed so as to come in contact with the electrolyte layer.

Abstract: A solid electrolytic capacitor including: an anode containing a valve metal or its alloy; a dielectric layer provided on the surface of the anodic; a cathode provided on the surface of the dielectric layer; and an outer package resin covering the anode, the dielectric layer and the cathode, wherein a glass transition temperature (Tgb) of the outer package resin is a temperature ranging from 0.50 to 0.90 times a maximum glass transition temperature (Tga) which is a maximum value of glass transition temperatures exhibited by the outer package resin after each heat treatment at variable temperatures of every 10° C. from 50° C. to 200° C. (treatment time: 5 hours) which is performed on the outer package resin before a curing process.

Abstract: Provided is a solid electrolytic capacitor with low ESR (equivalent series resistance) and excellent reliability during high-temperature storage. The solid electrolytic capacitor includes an anode formed of a valve metal, a dielectric film provided on the anode, a conducting polymer layer provided on the dielectric layer, and a cathode extraction layer provided on the conducting polymer layer. The conducting polymer layer contains a metal-based conductive filler in at least one of a flake form and a fiber form.

Abstract: The invention provides a solid electrolytic capacitor which can suppress increase of a leakage current due to a heat load, and a method for producing the solid electrolytic capacitor. The solid electrolytic capacitor includes an anode body, a dielectric layer formed on a surface of the anode body, a conductive polymer layer formed on the dielectric layer, and a cathode layer formed on the conductive polymer layer. The dielectric layer contains at least one metal element which is selected from the group consisting of tungsten (W), molybdenum (Mo), vanadium (V) and chromium (Cr) and which has a concentration distribution in a direction of the thickness of the dielectric layer (i.e. in a direction from the cathode side to the anode side of the dielectric layer) so that the concentration of the metal element is maximized at an interface between the dielectric layer and the conductive polymer layer.

Abstract: In a solid electrolytic capacitor provided with an anode, a cathode, and a dielectric layer formed by anodization of the anode, the anode includes a first metal layer and a second metal layer. The first metal layer is made of any of metal selected from niobium, aluminum and tantalum, or an alloy containing any of metal selected from niobium, aluminum and tantalum as a main component. The second metal layer contains any of metal selected from titanium, zirconium and hafnium. Here, a part of a surface of the first metal layer is covered with the second metal layer.

Abstract: The present invention is to provide a solid electrolytic capacitor having a small equivalent series resistance. In this solid electrolytic capacitor, a capacitor element is buried inside of an outer package of an epoxy resin or the like, the capacitor element including an anode in which a part of an anode lead is buried, a dielectric layer which is formed on the anode and contains a niobium oxide and a cathode which is formed on the dielectric layer. The cathode includes a first electrolyte layer which is formed on the dielectric layer and contains a conductive polymer, an intermediate layer which is formed on the first electrolyte layer and contains organic silane, a second electrolyte layer which is formed on the intermediate layer and contains a conductive polymer, a first conductive layer which is formed on the second electrolyte layer and contains carbon particles and a second conductive layer which is formed on the first conductive layer and contains silver particles.

Abstract: The present invention is characterized by obtaining a high charge/discharge capacity upon high rate charging/discharging in a hybrid capacitor having characteristics of both an electric double layer capacitor and a lithium-ion secondary battery. Specifically, the present invention is a capacitor comprising: a positive electrode 1 composed of a polarizable electrode containing activated carbon; a negative electrode 2 containing as an anode active material a carbon material capable of inserting/extracting lithium ion; and a nonaqueous electrolyte containing lithium ion, wherein a charge cutoff potential for the negative electrode 2 is within the range of 0.15 to 0.25 V (vs. Li/Li+).

Abstract: One aspect of the embodiment provides a solid electrolytic capacitor that comprises: an anode; a dielectric layer formed on the surface of this anode; an electrically-conductive polymer layer formed on the dielectric layer; and a cathode layer formed on this electrically-conductive polymer layer. At least manganese is contained in the dielectric layer, and the manganese distributes in a way that the manganese is present more in a part of the dielectric layer that is closer to the cathode (or in the interface between the dielectric layer and the electrically-conductive polymer layer).

Abstract: Particles of a valve metal and a binder are mixed and kneaded together. The mixed-kneaded matter obtained thereby is molded, and a through-hole is formed in the molded body. An anode body is formed by sintering the molded body. A dielectric layer is formed on the surface of the anode body thus formed. Subsequently, an conducting polymer layer is formed on the dielectric layer.

Abstract: A solid electrolytic capacitor includes an anode substrate, a dielectric layer provided on the anode substrate, a first cathode layer provided on the dielectric layer, and a second cathode layer provided on the first cathode layer. The first cathode layer is a layer made of polyethylenedioxythiophene and polypyrrole. The second layer is a layer made of polypyrrole.

Abstract: Disclosed are a niobium solid electrolytic capacitor capable of reducing leak current that may occur in high heat treatment in a reflow process and capable of preserving the capacity before and after heat treatment, and a method for producing it. The niobium solid electrolytic capacitor comprises an anode containing an oxide of niobium monoxide or niobium dioxide and a metal of niobium or a niobium alloy, a dielectric layer formed on the surface of the anode, and a cathode formed on the dielectric layer, wherein the dielectric layer contains fluorine.

Abstract: The solid electrolytic capacitor includes an anode body formed of a sintered body consisting of metal particles; a dielectric layer provided on the top surface of the anode body; and a conducting polymer layer provided on the top surface of the dielectric layer. The anode body includes a first anode portion and a second anode portion which is provided in a way that the second anode portion covers the first anode portion, and in that the particle diameter of metal particles for the second anode portion is smaller than that of metal particles for the first anode portion.

Abstract: The present invention provides an electrolytic capacitor having a large electrostatic capacity. In the solid electrolytic capacitor, a capacitor element provided with; an anode in which a part of an anode lead is embedded in the inside of an outer package made of an epoxy resin or the like; an oxide layer containing niobium oxide formed on the anode; and a cathode formed on the oxide layer; is embedded. The anode lead is composed of a niobium alloy containing at least one of vanadium and zirconium, and its one end is embedded in the anode composed of a porous sintered body of metal particles containing niobium, and the other end is connected to an anode terminal. The cathode is composed of a conductive polymer layer such as polypyrrole, a first conductive layer containing carbon particles, and a second conductive layer containing silver particles, and one end of a cathode terminal is connected to the cathode via a third conductive layer containing silver particles.

Abstract: The present invention relates to a solid electrolytic capacitor provided with a anode made of a metal or an alloy having valve action, a dielectric layer formed on the anode, and an electrolyte layer consisting of a conductive polymer layer formed so as to have contact with a portion of the region on the dielectric layer surface and a manganese dioxide layer formed so as to have contact with the other portion of the region on the dielectric layer surface.

Abstract: An electrochemical device includes an electrode formed using an electrode active material that includes: a carbon material having a crystal structure in which a plurality of graphite layers (31) are stacked; and a conductive polymer or conductive oligomer (32) which is intercalated between at least part of the graphite layers (31) and in which electron transfer takes place along with redox reaction.