Sanyo Electric Co., Ltd.

Mamoru Kimoto

Koji Nishio

Nobuyuki Higashiyama

Mutsumi Yano

Teruhiko Imoto

Kikuko Kato

Shin Fujitani

Kazuhiro Takatani

Yoshinori Matsuura

Takahisa Iida

Ikuo Yonezu

Mitsuzo Nogami

Yohei Hirota

Masutaka Ouchi

Mitsuzou Nogami

Yasuhiko Itoh

Yasushi Kuroda

Toshihiko Saito

Takeshi Ogasawara

Mitsunori Tokuda

Motoo Tadokoro

Masao Takee

Yoshifumi Magari

Syuichi Suzuki

Hiroshi Nakajima

Hiroshi Nonoue

Nobuhiro Furukawa

Yasumi Kobayashi

Katsuhiko Shinyama

Koichi Nishimura

Shigekazu Yasuoka

Hiroaki Izu

Reizo Maeda

Yasuhiro Kishimoto

Tadashi Ise

Seiji Omura

Yoshito Chikano

Takahiro Isono

Toshihiko Saitoh

Yasuo Nakahara

Hiroshi Fukuda

Takuya Hashimoto

Fusago Mizutaki

Yoshihiro Masuda

Yoshito Tikano

Hiroyoshi Take

Husago Mizitaki

Yoshinori Mastuura

Nobohiro Furukawa

Shinya Inoue

In this solid electrolytic capacitor, a plate-shaped anode having a porous sintered body, a dielectric layer and an electrolyte layer of polypyrrole are formed in this order for covering one part of an anode lead. An intermediate layer of aminopropyltriethoxysilane (APTES) is formed for covering the electrolyte layer. A cathode having a first conductive layer containing graphite particles and a second conductive layer containing silver particles is formed for covering the intermediate layer. The cathode and a cathode terminal are connected by a conductive adhesive layer. The anode lead and the anode terminal are connected by welding. Further, a mold outer resin is formed to allow one end of the cathode terminal and one end of the anode terminal to project therefrom.

Solid electrolytic capacitor and manufacturing method thereof

An aspect of the present invention provides a method of manufacturing a solid electrolytic capacitor. The solid electrolytic capacitor includes an anode made of valve action metal, a dielectric layer, a solid electrolytic layer, a cathode conductive layer, and a cathode terminal. The method forms the cathode conductive layer by forming a conductive paste and conductive adhesive between the solid electrolytic layer and the cathode terminal and then simultaneously hardening the conductive paste and the conductive adhesive.

Solid electrolytic capacitor and method of manufacturing solid electrolytic capacitor

A capacitor element comprises an anode, a dielectric layer formed on the anode, an electrolyte layer formed on the dielectric layer, and a cathode formed on the electrolyte layer. On the cathode formed by the surface of the capacitor element, a conductive adhesive layer containing silver particles and an organic silane layer made from aminopropyltriethoxysilane (APTES) are sequentially formed, and the cathode and a cathode terminal are connected through the conductive adhesive layer and the organic silane layer. In addition, an anode terminal is connected to an anode lead which exposed from the anode by welding.

Capacitors and methods for manufacturing the same

An electrochemical device includes a pair of electrodes at least containing activated carbon powder, a separator interposed between the pair of electrodes, and an electrolytic solution impregnated into the pair of electrodes and the separator. The electrodes and the separator are stacked on a collector. Each of the electrodes includes at least two layers arranged in a thickness direction, and the two layers are made of the activated carbon powder having mutually different average grain sizes. The average grain size of the activated carbon powder in the layer contacting the separator is greater than the average grain size of the activated carbon powder in the layer located on the collector side.

Electrochemical device

A solid electrolytic capacitor having less occurrence of leakage current and a fabrication method therefor. In a solid electrolytic capacitor, a dielectric layer of niobium oxide having high electrical insulation whose major component is niobium or oxygen, an electrolyte layer and a cathode are formed in the order on an anode formed of niobium or niobium alloy, the dielectric layer is composed of a first dielectric layer containing fluorine formed on the anode and a second dielectric layer containing phosphorus or sulfur formed on the first dielectric layer and fluorine concentration in the first dielectric layer is decreased from the anode side toward the second dielectric layer.

Solid electrolytic capacitor and method for manufacturing same

An electric double layer capacitor includes: a cell which includes a pair of polarizable electrodes impregnated with an electrolytic solution and disposed in opposed relation with a separator interposed therebetween; collector electrodes respectively attached to the polarizable electrodes; and a sealing member of a synthetic resin which seals a periphery of the cell. The collector electrodes extend outward of the sealing member through the sealing member in contact with the sealing member. The collector electrodes each have a rough surface portion which extends through the sealing member.

Electric double layer capacitor and electrolytic cell

An anode includes a base body of a sintered porous material of niobium particles, a surface layer made of crystalline niobium oxide formed on the base body, and an anode lead having partly buried in base body. A dielectric layer containing amorphous niobium oxide is formed by anodic oxidation on the cathode. An electrolyte layer made of polypyrrole is formed on the dielectric layer and a cathode is formed on the electrolyte layer. A conductive adhesive layer and cathode terminal are formed on an upper surface of the cathode. The anode lead exposed from the base body is connected to an anode terminal by welding. In addition, a mold resin is formed to cover the second conductive layer, the cathode terminal and the anode terminal so as to expose cathode terminal and an end of anode terminal.

Solid electrolytic capacitor and method of manufacturing the same

A solid electrolytic capacitor having an anode of valve metals or of an alloy of which main component is valve metals; a dielectric layer formed by anodizing said anode; an electrolyte layer formed on said dielectric layer; and a cathode formed on said electrolyte layer; wherein said cathode has a silver layer using silver and sulfur and/or sulfur compound is contained in said silver layer.

Solid electrolytic capacitor

In this solid electrolytic capacitor, a plate-shaped anode having a porous sintered body is formed covering one part of an anode lead. A dielectric layer is formed covering the anode. An electrolyte layer of tantalum carbide is formed covering the dielectric layer. A cathode is formed covering the electrolyte layer. A conductive adhesive layer is formed on the upper surface of the cathode, and the cathode and a cathode terminal are connected by the conductive adhesive layer. An anode terminal is connected by welding the anode terminal on the anode lead projecting from the anode. Further, a mold outer resin is formed around the second conductive layer, the cathode terminal and the anode terminal.

A solid electrolytic capacitor having an anode of valve metal or of an alloy of which main component is the valve metal; a dielectric layer formed by anodizing the anode; an electrolyte layer formed on the dielectric layer; and a cathode formed on the electrolyte layer; wherein the cathode has a carbon layer containing coated carbon particles in which at least a part of the surface of carbon particles is coated with metal and/or metal compound having higher conductivity than carbon.

Solid electrolytic capacitor and method of manufacturing solid electrolytic capacitor cathode material

A solid electrolytic capacitor comprising: an anode of valve metals or alloy of which main component is valve metals; a dielectric layer formed by anodizing the anode; and a cathode formed on the dielectric layer, wherein the dielectric layer comprises a first dielectric layer located on the anode side and a second dielectric layer formed on the first dielectric layer, and oxygen concentration of the second dielectric layer is decreased from the first dielectric layer side toward the cathode side.

Solid electrolytic capacitor and fabrication method therefor

The present invention provides a solid electrolytic capacitor with low leakage current. In the solid electrolytic capacitor, an anode has an anode lead made of tantalum, a surface layer made of niobium formed on the anode lead, and a rectangular block shaped base body having a porous sintered body made from niobium particles, and the anode lead is partially embedded in the base body. Onto the anode, an oxide layer made of niobium oxide, an electrically conductive polymer layer, and a cathode laminated with a first electrically conductive layer and a second electrically conductive layer are sequentially laminated. Onto the top surface of an area surrounding the cathode, a cathode terminal is formed through an electrically conductive adhesive layer. Also, an anode terminal is connected onto an edge of the anode lead.

Solid electrolytic capacitor element, manufacturing method therefor, and solid electrolytic capacitor

A solid electrolytic capacitor comprises an anode formed of at least one metal selected from tantalum, niobium, titanium and tungsten, and a dielectric layer, an electrolytic layer and a cathode disposed on the anode, wherein the cathode comprises a mixed layer containing a first material consisting of silver particles having an average particle diameter (median diameter) of not less than 2 &#x3bc;m, a second material consisting of conducting carbon particles and/or silver particles having an average particle diameter (median diameter) of 1 &#x3bc;m or less and a binding agent.

A solid electrolytic capacitor comprising: an anode of niobium or niobium alloy; and a dielectric layer formed by anodizing the anode; wherein the anode comprises a surface layer of niobium silicide formed at an interface between the dielectric layer and itself, and silicon is contained in the dielectric layer.

Solid electrolytic capacitor and method of manufacturing solid electrolytic capacitor anode material

A method of producing a hydrogen storage alloy, for use in alkaline storage batteries, includes two steps. A first step involves preparing alloy particles having a CaCu-type crystal structure and the compositional formula MmNiCoMnM, wherein M represents at least one element selected from the group consisting of aluminum (Al) and copper (Cu), 3.0&#x2266;x&#x2266;5.2, 0&#x2266;y&#x2266;1.2, 0.1&#x2266;z&#x2266;0.9, and 4.4&#x2266;x+y+z&#x2266;5.4. A second step involves immersing the alloy particles in an acid treating solution containing a cobalt compound and a copper compound, each in the amount of 0.1 to 5.0% by weight based on the weight of the alloy particles, and an organic additive to remove oxide films from and to reductively deposit cobalt and copper on a surface of each alloy particle to form a surface region surrounding a bulk region and having a graded composition. When the sum in percentage of numbers of cobalt (Co) atoms and copper (Cu) atoms present in the surface region is given by a and that in the bulk region by b, the relationship a/b&#x2267;1.3 is satisfied.

Method for production of hydrogen storage alloy for use in alkaline storage batteries

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Hirakata, Japan

Mamoru Kimoto