Nec Corporation

Nec Tokin Corporation

Ihara Chemical Industry Co., Ltd.

Toshihiko Nishiyama

Gaku Harada

Tomoki Nobuta

Masato Kurosaki

Masaya Mitani

Koji Sakata

Hiroyuki Kamisuki

Satoshi Arai

Shinako Kaneko

Takashi Fukaumi

Yuji Nakagawa

Masaki Fujiwara

Shinako Okada

Atsushi Kobayashi

Naoki Takahashi

Satoshi Suzuki

Ryuta Kobayakawa

Yuuji Nakagawa

Shinya Yoshida

Katsuhiro Yoshida

Hiromichi Taniguchi

Junko Kurihara

Masashi Ohi

Shinji Takeoka

Yoshihiko Saiki

Yasuhisa Sugawara

Isamu Uchida

Takashi Kono

Kenji Araki

Katsuhiko Naoi

Eishun Tsuchida

Kimihisa Yamamoto

Kunihiko Shimizu

Tomitaro Hara

Maki Minamoto

Yuji Aoki

Naoto Yazawa

Atushi Kobayashi

Yuuji Aoki

Hideo Ooi

Tetsuya Yoshinari

Kunihiko Simizu

Noriko Kuge

Kouji Sakata

Masaki Fuziwara

Ari Manago

Shunzou Suematsu

Atsuhiko Fujita

Syuichi Nagashima

Kazuaki Fukushima

Eishun Tuchida

Yoshitaka Fujishima

Kumihisa Yamamoto

Tetuya Yoshinari

A solid electrolytic capacitor includes an anode formed of a valve metal and having a roughened surface layer at a surface thereof, a dielectric layer formed of a valve metal oxide and formed on the anode, a cathode formed of a conductive polymer layer formed on the dielectric layer, an anode lead formed adjacent to and integrally with the anode, and a resist formed of an insulating material and delimiting the anode and the anode lead. The anode and the anode lead have a first stepped portion having both surfaces each cut in a thickness direction and covered with the resist, and the anode lead has a second stepped portion having both surfaces each cut deeper in the thickness direction than the first stepped portion.

Solid electrolytic capacitor with small leakage current and method of manufacturing the same

The present invention provides a conductive polymer suspension for providing a conductive polymer material having a high conductivity and a method for producing the same, and in particular, a solid electrolytic capacitor having a low ESR and a method for producing the same. The conductive polymer suspension is produced by: synthesizing a conductive polymer by chemical oxidative polymerization of a monomer giving the conductive polymer by using an oxidant in a solvent containing a dopant consisting of a low-molecular organic acid or a salt thereof; purifying the conductive polymer; and mixing the purified conductive polymer and an oxidant in an aqueous solvent containing a polyacid component.

Conductive polymer suspension and method for producing the same, conductive polymer material, electrolytic capacitor, and solid electrolytic capacitor and method for producing the same

The present invention provides a conductive polymer suspension for providing a conductive polymer material having a high conductivity and a method for producing the same, and in particular, a solid electrolytic capacitor having a low ESR and a method for producing the same. The conductive polymer suspension can be is produced by: synthesizing a conductive polymer by chemical oxidative polymerization of a monomer giving the conductive polymer by using an oxidant in an aqueous solvent containing a dopant consisting of a low-molecular organic acid or a salt thereof, or a polyacid having a weight average molecular weight of less than 2,000 or a salt thereof.

In a solid electrolytic capacitor including a porous valve-acting metal, an anode conductor has a large number of pores having openings on the surface thereof according to the porosity of the valve-acting metal. A solid electrolyte layer is formed on the surface of the anode conductor so as to be filled in at least a portion of each of the pores and to close the openings thereof. Further, a cathode conductor is formed on the solid electrolyte layer. Preferably, the solid electrolyte layer has a two-layer structure with two layers having different particle sizes.

Solid electrolytic capacitor with improved moisture resistance properties and method of manufacturing the same

A solid electrolytic capacitor manufacturing method includes a process of removing a roughened surface layer (') from a distal portion () of a metal member () and from part of an intermediate portion () adjacent to the distal portion (), a process of forming a resist () on the distal portion () and the intermediate portion () of the metal member (), a process of forming a conductive polymer layer () of a conductive polymer on a proximal portion () of the metal member (), and a process of removing a resist (&#x2032;) and a surface layer portion (&#x2032;) of the metal member () from the distal portion () of the metal member ().

This invention provides an electrode for an electrochemical cell in which an active material in an electrode material is a proton-conducting compound, wherein the electrode material comprises a nitrogen-containing heterocyclic compound or a polymer having a unit containing a nitrogen-containing heterocyclic moiety.

Cell electrode and electrochemical cell therewith

The present invention provides a novel indole carboxylic ester trimer which is characterized by being represented by the following general formula (1): wherein R represents a straight or branched chain alkyl group having 1-6 carbon atoms; n is an integer of 1-4; Xrepresents at least one anion selected from a group of anions having a valency of 1-3 consisting of chloride ion, bromide ion, iodide ion, fluoride ion, nitrate ion, sulfate ion, hydrogen sulfate ion, phosphate ion, borofluoride ion, perchlorate ion, thiocyanate ion, acetic acid ion, propionic acid ion, methanesulfonic acid ion, p-toluenesulfonic acid ion, trifluoroacetic acid ion and trifluoromethanesulfonic acid ion; a represents the ionic valence number of X and is an integer of 1-3; and m is 0-0.5.

Indolecarboxylic ester trimer and electrochemical cell using the same

This invention relates to a polymer having a chain structure of a repeating unit of a proton-conducting compound which causes an electrochemical redox reaction in a solution of a proton source to act as an electrode active material, and a heterocyclic compound structure; and an electrochemical cell comprising the polymer as an electrode active material.

Polymers and electrochemical cell therewith

A secondary battery and capacitor includes as an active material of an electrode a compound having a trimer structure comprising three structure units of one or more kind of indole compounds selected from indole and indole derivatives and a condensed polycyclic structure having a six-membered ring composed of atoms of the second and the third position of the each three structure units, wherein the active material comprises as the compound a first compound having a trimer structure wherein any bonds between the structure units are formed among the second position of one structure unit and the third position of the other structure unit and a second compound having a trimer structure comprising a bond formed among the second position of one structure unit and the second position of the other structure unit, and a proton is utilized as a charge carrier of the first compound and the second compound.

Secondary battery and capacitor utilizing indole compounds

A proton-conducting electric double layer capacitor comprising a electrolytic solution containing an aqueous solution of an organic or inorganic acid whereto a water-soluble N-containing heterocyclic compound is added.

Proton-conducting electric double layer capacitor using electrolytic solution

The present invention provides a secondary battery and a capacitor which may provide an excellent high rate and cycle characteristic as well as sufficient electromotive force and capacity. The secondary battery and a capacitor have an active material of an electrode comprising a trimer compound comprising three units of indole or indole derivatives in condensed ring form, wherein the second position and the third position of each unit form a six-membered ring, and a proton which can be utilized as a charge carrier of the trimer compound.

Secondary batteries and capacitors have a high electromotive force together with a high cyclic property and are capable of fast charging and discharging, using a polymeric compound having a high stability and high reactivity in an acidic ambient, as an electrode active material. The secondary batteries and capacitors include an indole polymeric compound as an electrode active material. The polymeric compound uses a proton as a charge carrier and has a constituent represented by general formula (1):wherein each R denotes a hydrogen atom, a halogen atom, a hydroxyl group, a carboxyl group, a sulfonic group, a sulfuric acid group, a nitro group, a cyano group, an alkyl group, an aryl group, an alkoxyl group, an amino group, an alkylthio group and an arylthio group, which may be the same or different from each other, and at least one R is a substituent other than a hydrogen atom.

Secondary battery and capacitor using indole polymeric compound

A small battery and an electric double layer capacitor exhibit adequate cell voltage and capacitor withstand voltage. Specifically, the battery or electric double layer capacitor includes basic cells having a pair of electrodes oppositely laminated via the separator, and an electrolyte are packaged in a resin sheet package. The basic cells are laminated in series via a sheet current collector. The sheet current collector extends to an edge of the resin sheet package around the periphery of the basic cells laminated on both sides of the current collector. The sheet current collector is glued or fused to the resin sheet in its edge. The adjacent basic cells via the sheet current collector are fluid-tightly separated within the resin sheet package.

Battery having a sheet current collector fluid-tightly separating basic cells

A secondary battery of a proton conductive polymer, wherein a positive electrodeand a negative electrodeare arranged facing to each other via a separator in an electrolytic solution and only a proton in a &#x3c0; conjugated polymer or a proton of a hydroxyl group in a hydroxyl-containing macromolecular as an active material of an electrode in the positive and negative electrodes participates in a charge/discharge; the secondary battery uses a membrane, which has acid resistance, oxidation resistance and a functional group having cation exchange function, as the separator

Secondary battery of proton conductive polymer

An electrochemical cell contains, as an electrode active material, a mixture of trimer compounds each in the form of indoles or indole derivatives coupled to each other in second and third positions thereof, and tetramer compounds each of indoles or indole derivatives. In the cell, protons are used as charge carriers.

Electrochemical cell using indole-related compounds

Growing community of inventors

Miyagi, Japan

Toshihiko Nishiyama