Ricoh Company, Ltd.

Other

Unitika Ltd.

Sanyo Chemical Industries, Ltd.

Okitoshi Kimura

Toshiyuki Kabata

Toshiyuki Ohsawa

Masaki Yoshino

Toshishige Fujii

Tomohiro Inoue

Yoshitaka Hayashi

Yoshiaki Echigo

Eiji Noda

Hiroshi Nishihara

Masahiro Masuzawa

Hideo Yanagita

Koji Arimitsu

Shigeo Takeuchi

Keigo Takauji

Keiichi Asami

Yuu Zama

Kohji Matsuoka

Hiroyuki Iechi

Miku Ohkimoto

Anna Hirowatari

Toru Ushirogochi

Sachiko Yoneyama

Nobuo Katagiri

Yoshiko Kurosawa

Hideki Takahashi

Masahiro Taniuchi

Tetsuya Samura

Sachiko Kimura

Katsuo Inoue

Aya Yoshida

Yumiko Suzuki

Kunitsugu Aramaki

An ionic conductive polymer gel for secondary battery includes an electrolyte salt component which includes a sulfonated derivative with formula (A):

Ionic conductive polymer gel and lithium-ion battery using the same

A negative electrode for a lithium secondary battery includes at least two kinds of carbon materials with a spacing of lattice plane (d.sub.002) of 3.4 .ANG. or less in the direction of the C axis thereof. A lithium secondary battery using this negative electrode is provided.

Negative electrode for lithium secondary battery and lithium secondary

A non-aqueous secondary lithium battery includes a positive electrode; a negative electrode which including at least one component selected from the group consisting of lithium, a lithium alloy, and a host compound which forms an intercalation compound or complex in combination with lithium; and an electrolytic solution or solid electrolyte containing a silicone compound.

Non-aqueous secondary lithium battery

The present invention provides a composite sheet electrode which has high strength, excellent current collecting properties and which is used efficiently as an active material for an electrode. The electrode has excellent discharge capacities and can be easily formed into an electrode terminal. A cell employing this electrode is also disclosed. The invention also provides a composite sheet electrode having a porosity of 20 to 80% containing 5 to 95% by weight of an active material of an electrode, 1 to 50% by weight of a current collecting material and heat fusible short fibers. The present invention also provides a composite sheet electrode having a porosity of 20 to 80%, which is made up of a composite sheet containing 5 to 95% by weight of an active material as an electrode and 5 to 95% by weight of heat fusible short fibers, as well as a current collecting material layer formed on said composite sheet. The present invention further provides a cell employing the latter-mentioned composite sheet electrode.

Composite sheet electrode

A positive electrode is composed of a film-shaped active material, which is composed of a conducting polymer serving as a first active material, and an electrochemical active material serving as a second active material which is uniformly dispersed in the shape of particles in the conducting polymer, with the parts-by-weight ratio of the second active material to the first active material being 3 to 9 parts of the second active material to 7 to 1 part of the first active material, when the total of the first active material and the second active material is 10 parts. A secondary battery is fabricated using the above positive electrode.

Positive electrode and secondary battery using the same

Solid electrolyte, electrochemical device including the same and method

A negative electrode for a secondary battery which has a positive electrode including a polymer active material. The negative electrode includes: a current collector beforehand roughened at one surface thereof; a first layer disposed on the roughened one surface and including a material selected from the group consisting of alkali metal and an alloy containing alkali metal; and a second layer disposed on the first layer and including an ion conductive material. A surface of the first layer has an uneven configuration which conforms with another uneven configuration of the roughened one surface of the current collector, the surface of the first layer being in contact with the second layer. A method for manufacturing the negative electrode is also disclosed.

Negative electrode for secondary battery

A negative electrode for a secondary battery comprises a substrate consisting of aluminum or an aluminum composition comprising aluminum as the main component, the aluminum being in the form of crystals with (100) planes oriented perpendicularly to the surface of the substrate, and a lithium-alumin alloy layer formed thereon, and a method of producing the negative electrode is disclosed.

Method of producing a negative electrode for a secondary battery

A negative electrode for a secondary battery comprises a substrate consisting of aluminum or an aluminum composition comprising aluminum as the main component, the aluminum being in the form of crystals with (100) planes oriented perpendicularly to the surface of the substrate, and a lithium-aluminum alloy layer formed thereon, and a method of producing the negative electrode is disclosed.

A non-aqueous secondary battery comprises (i) an electroconductive or semiconductive polymeric material serving as an active material for a positive electrode, (ii) a negative electrode active material and (iii) an electrolytic solution comprising an electrolyte and a mixed solution of .gamma.-butyrolactone and a glyme. This secondary battery can be fabricated in the form of a flexible sheet.

Secondary battery

An electrochemical device is disclosed, which comprises at least a pair of electrodes; and a solid or solid-like composite electrolyte interposed therebetween, comprising substantially uniform spherical particles having no or substantially no electronic conductivity which are dispersed in the solid or solid-like composite electrolyte.

Electrochemical device

Sheet-shaped electrode, method or producing the same, and secondary

A composite sheet-shaped electrode comprising an aluminum collector and aniline type polymer serving as an active material, a secondary battery using the composite sheet-shaped electrode as the positive electrode thereof, and a method of preparing electrochemically the composite sheet-shaped electrode on the aluminum collector are disclosed.

Sheet-shaped electrode, method of producing the same, and secondary

A bonded body of aluminum and electroconductive polymer, said aluminum having a surface to which said polymer is bonded, and mainly having (HOO) face (H=1,2,4) as a crystal face at said surface.

Composite electrode comprising a bonded body of aluminum and

Polymers having repeat units represented by formula (Ia) in the main chain thereof, ##STR1## wherein Ar represents an aromatic conjugated group, and n is 10 or more, and a method of producing polymers having repeat units of general formula (I), ##STR2## wherein Ar represents an aromatic conjugated group, and X.sup.1 and X.sup.2 each represent hydrogen or halogen when the bond between the two carbon atoms is a double bond, and when the bond is a triple bond, neither X.sup.1 nor X.sup.2 exist by the electrochemical reduction of a monomer having general formula,

Growing community of inventors

Tokyo, Japan

Okitoshi Kimura