Nitto-denko Corporation

Nitto Electric Industrial Co., Ltd.

Hitachi Maxell, Limited

Masao Abe

Akira Ohtani

Yoshihiro Uetani

Keisuke Kii

Hiroyuki Higuchi

Keiji Nakamoto

Hisashi Ichinose

Yutaka Kishii

Akio Iwama

Hiroyoshi Take

Aimi Matsuura

Minoru Ezoe

Sadahito Misumi

Kuniaki Ishibashi

Masakatsu Urairi

Yuzuru Noda

Michio Umeda

Yasuo Kihara

Shinya Akizuki

Yutaka Yamamura

Shohei Tamura

Yohei Ando

Yuki Kajisa

Yasuhiro Umemoto

Keiko Mochizuki

Yujiro Kawashima

Sadamitsu Sasaki

Hitoshi Nakazawa

Akira Otani

Ryo Nagai

Fumiteru Asai

Yasuhito Funada

Megumu Nagasawa

Takeshi Sasaki

Yoshitaka Kazuse

Kazushige Yamamoto

Hideyuki Emori

Kinkou Sho

Atsuko Mizuike

Hiroshi Hattori

Keisuike Kii

Satoshi Yumoto

Akirai Ohtani

The invention provides a cathode sheet for use in a nonaqueous electrolyte secondary battery, including a composite material comprising a collector and a layer of a cathode active material provided thereon. The layer of a cathode active material includes: (a) a conductive polymer and (b) at least one selected from a polycarboxylic acid and a metal salt of a polycarboxylic acid; and the conductive polymer is a polymer in a dedoped state or in a dedoped and reduced state. The polymer constituting the conductive polymer is at least one selected from polyaniline, a polyaniline derivative, polypyrrole, a polypyrrole derivative, and polythiophene; and the polycarboxylic acid is at least one selected from polyacrylic acid, polymethacrylic acid, polyvinylbenzoic acid, polyallylbenzoic acid, polymethallylbenzoic acid, polymaleic acid, polyfumaric acid, polyglutaminic acid, polyaspartic acid, alginic acid, carboxymethylcellulose, and a copolymer including repeating units of at least two of the polymers listed herein.

Nonaqueous electrolyte secondary battery and cathode sheet therefor

A nonaqueous electrolyte secondary battery is provided, which includes a positive electrode, a negative electrode, a separator disposed between the positive electrode and negative electrode, and an electrolyte solution containing a supporting salt having ion conductivity, wherein the positive electrode comprises a composition containing components (a) and (b) below and satisfying a requirement (&#x3b1;) below, and wherein the negative electrode contains metal lithium and at least one selected from materials capable of lithium ion insertion/desorption:

Nonaqueous electrolyte secondary battery and method for manufacturing same

The invention provides a nonaqueous electrolyte secondary battery having a cathode and an anode arranged so as to be opposite to each other, and an electrolyte layer put therebetween;

The invention provides a fuel cell which comprises a cathode and an anode arranged to sandwich a proton-conductive ion exchange electrolytic membrane, oxygen and hydrogen containing carbon monoxide being supplied to the cathode and the anode, respectively, in which the cathode comprises an electroconductive porous substrate which carries thereon platinum or a platinum alloy and a proton-conductive ion exchange electrolytic polymer, and the anode comprises an electroconductive porous substrate which carries thereon platinum or a platinum alloy and a proton-conductive ion exchange electrolytic polymer, and further at least the anode carries a proton-supplying material thereon.

Fuel cell

Disclosed is an electrolyte membrane which enables a fuel cell to have a high maximum output when used therein since it has high proton conductivity and high hydrogen gas impermeability. Also disclosed are a method for producing such an electrolyte membrane, and a solid polymer fuel cell using such an electrolyte membrane. A method for producing an electrolyte membrane including a step for impregnating a porous base with a solution containing a sulfonic acid group-containing vinyl monomer and then polymerizing the monomer is characterized in that 80% by mole or more of vinyl sulfonic acid having purity of 90% or more, and/or a salt thereof is contained as the sulfonic acid group-containing vinyl monomer, and the concentration of the vinyl sulfonic acid and/or a salt thereof in the solution is set at 35% by weight or more.

Production method of electrolyte membrane, electrolyte membrane and solid polymer fuel cell using same

The invention provides an electrically conductive polyaniline composition comprising polyaniline which contains at least one of novolac resins selected from the group consisting of phenolsulfonic acid novolac resin and naphtholsulfonic acid novolac resin as a dopant. The electrically conductive polyaniline composition is obtained by contacting polyaniline with an aqueous solution of the novolac resin to dope the polyaniline with the novolac resin. The invention further provides an electrically conductive polyaniline film which comprises the polyaniline containing the novolac resin as a dopant. The electrically conductive polyaniline film is obtained by contacting film of polyaniline with an aqueous solution of the novolac resin to dope the polyaniline.

Conductive polyaniline composition, film thereof and processes for producing these

The invention provides a fuel cell which comprises a solid polymer electrolyte sandwiched between a cathode to which an oxidizing agent gas is supplied and an anode to which a reducing agent gas is supplied, wherein at least one of the electrodes has an electroconductive organic polymer which has an oxidation-reduction function as an electrode catalyst. The invention further provides a fuel cell in which the electrode catalyst comprises a mixture of an electroconductive organic polymer and an inorganic oxidation-reduction catalyst, and has a higher output power.

Electrically conductive polyaniline composition and method

Electrically conductive polyaniline composition, film thereof and method of producing them

A separator capable of inhibiting the self-discharge of a battery. The separator is a battery separator obtained by applying a polymer having in the molecule a carbodiimide unit represented by the following formula (I):&#x2014;[&#x2014;R&#x2014;N&#x2550;C&#x2550;N&#x2014;]&#x2014;&#x2003;&#x2003;(I)(wherein R means an organic group and n means an integer of 1 to 10,000) to a porous sheet substrate.

Battery separator containing carbodiimide polymer

Battery containing a polycarbodiimide polymer

This invention relates to a conducting organic polymer formed by doping an organic polymer with a protonic acid having a dissociation constant value pKa of less than 4.8, wherein the organic polymer has, as the main repeating unit, a compound represented by the general formula: ##STR1## wherein, m and n, respectively, show the molar fraction of the quinonediimine structural unit and phenylenediamine structural unit in the repeating unit, and 0&lt;m&lt;1, 0&lt;n&lt;1, and m+n=1; and the organic polymer is soluble in an organic solvent in the undoped state, and has an intrinsic viscosity �.eta.! of more than 0.4 dl/g measured in N-methyl-2-pyrrolidone at 30.degree. C. This invention also relates to a film formed of the conducting organic polymer and a conducting organic polymer composition.

Organic polymer, conducting organic polymer, production methods and uses

An organic polymer solution composition and a process for producing an electrically conductive organic polymer using the composition are disclosed. The composition comprising in organic polymer having an imino-p-phenylene structural unit represented by formula (I): ##STR1## as the main repeating unit, a protonic acid salt, and an organic solvent, the polymer and the salt being dissolved in the organic solvent.

Process for producing electrically conductive organic polymer composition

A solid electrolytic capacitor comprising a film-forming metal, a dielectric oxide film formed thereon, and an electrically conductive composite polymer film formed on the dielectric oxide film as a solid electrolyte,

Solid electrolytic capacitor and process for producing the same

A process for producing an electrically conductive organic polymer, which comprises subjecting an organic polymer having an imino-p-phenylene structural unit represented by the following formula ##STR1## as the main repeating unit to a doping treatment with a solution having dissolved therein a quinone series oxidizing agent together with a protonic acid.

Process for producing electrically conductive organic polymer

Growing community of inventors

Osaka, Japan

Masao Abe