Abstract: A solid electrolytic capacitor that can be miniaturized while maintaining the function for breaking current when excessive short-circuit current flows to a capacitor element. The solid electrolytic capacitor includes an anode body, a dielectric layer formed on the anode body, a conductive polymer layer formed on the dielectric layer, and a cathode layer formed on the conductive polymer layer. The conductive polymer layer contains thermally expandable graphite.

Abstract: Solid electrolytic capacitors are provided with decreased equivalent series resistance (ESR). The solid electrolytic capacitors include: an anode containing a valve metal or an alloy that is mainly made of a valve metal; a dielectric layer formed on a surface of the anode; an electrolyte layer formed on the dielectric layer; a carbon layer formed on the electrolyte layer; and a silver paste layer formed on the carbon layer, wherein the silver paste layer contains a nonionic surfactant.

Abstract: An aspect of the present invention provides a solid electrolytic capacitor that comprises: an anode mainly formed of a valve metal or an alloy thereof; an anode lead terminal a part of which is buried in a side surface of the anode; a dielectric layer formed on surfaces of the anode and mainly formed of an oxide; a conducting polymer layer formed on the dielectric layer; a cathode layer formed on the conducting polymer layer on an outer circumferential surface of the anode, the cathode layer comprising: a carbon layer; and a silver paste layer formed on the carbon layer; a thermal expansion layer provided on the side surface of the anode and on a part of the outer circumferential surface continuing from the side surface; and a rein outer package provided to cover the anode, dielectric layer, cathode layer, and thermal expansion layer, wherein a thermal expansion coefficient in a temperature range lower than a glass transition temperature of the thermal expansion layer is larger than that of each of the silver

Abstract: A method for manufacturing a solid electrolytic capacitor that prevents leakage current from increasing. The method includes preparing a capacitor element including an anode body, which has an anode lead, and a cathode layer; preparing a lead terminal including an anode terminal, a cathode terminal, and a first insulative member which connects the anode terminal and cathode terminal; connecting the lead terminal and the capacitor element by bonding the anode terminal and the anode lead and bonding the cathode terminal and the cathode layer; and molding a package resin around the capacitor element.

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: 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: 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: A solid electrolytic capacitor has an anode body including a porous sintered body consisting of a valve action metal, a dielectric layer deposited on a surface of the anode body, a conductive polymer layer deposited on a surface of the dielectric layer, and a cathode layer deposited on a surface of the conductive polymer layer. The conductive polymer layer includes a laminated film consisting of a first conductive polymer layer formed by a chemical polymerization process and a second conductive polymer layer formed by an electrolytic polymerization process. The first conductive polymer layer has recesses on its surface against the dielectric layer. Interior surfaces of such recesses define cavities which constitute pores at an interface between the first conductive polymer layer and the dielectric layer. These pores are distributed at intervals along the interface between the first conductive polymer layer and the dielectric layer in such a way that the dielectric layer is exposed to their interior surfaces.

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: Provided is a solid electrolytic capacitor with a high capacity occurrence rate and a high capacity and a method for manufacturing the solid electrolytic capacitor. An anode body is formed on a periphery of an anode lead having a hollow structure. The anode body has a porous body of a valve metal or an alloy of the metal as its main component. The hollow structure allows an inside and an outside of the anode body to connect with each other. A dielectric layer is formed on a surface of the anode body, and a conducting polymer layer is formed on a surface of the dielectric layer. When the conducting polymer layer is formed, the inside of the anode body is depressurized by suction from the outside of the anode body through the hollow structure of the anode lead.