Sharp Kabushiki Kaisha Corporation

Motoo Mohri

Yoshimitsu Tajima

Hideaki Tanaka

Shigeo Nakajima

Yoshikazu Yoshimoto

Tomonari Suzuki

Michiyo Kasahara

Masaru Yoshida

Hiroshi Wada

Nobuhiro Yanagisawa

Tetsuya Yoneda

The preferred embodiment provides a unique solid-state electrolytic battery featuring high reliability and an extremely durably service life. The battery is capable of generating a large amount of dischargeble current and can be satisfactorily charged and discharged using the activated hydrogen-stored alloy/materials. This unique solid-state electrolytic battery incorporates a cathode comprised of activated hydrogen-stored alloy storing metallic-hydrogenated hydrogen; a solid-state electrolyte comprised of hydrogen-ion conductive elements; and an anode containing an activated guest material, primarily hydrogen-ions.

Solid-state electrolytic battery

A method for the manufacture of a pyrolytic graphite with high crystallinity comprising the deposition of graphite directly onto a crystalline catalytic substrate by thermal decomposition of a carbon-containing material at a temperature of 1000.degree. C. or less, the pyrolytic graphite having interlayer spacing in a limited range and a c-axis orientation of carbon layers perpendicular to the surface of the substrate. An electrode with graphite as an active material and a crystalline metal electrode substrate as a current collector unified, the graphite being pyrolytic graphite that is deposited on the crystalline metal electrode substrate with catalytic properties so as to cover the crystalline metal electrode substrate by the above-mentioned method.

Method for the manufacture of pyrolytic graphite with high crystallinity

A method for the production of a carbon electrode includes directly depositing a carbon material on an electroconductive and flexible electrode substrate by chemical vapor deposition using gaseous hydrocarbons as a starting material, filling the carbon material directly deposited on the electrode substrate with a charge carrier material capable of being reversibly intercalcated therein and deintercalated therefrom, and compressing the electrode substrate filled with the charge carrier material, resulting in a thin plate-shaped carbon electrode.

Method for the production of a carbon electrode

A method for the production of a carbon electrode comprising disposing an electroconductive and flexible electrode substrate within a reaction tube to which a gaseous material gas of hydrocarbons is supplied, directly depositing a carbon material on said electrode substrate by chemical vapor deposition at 1500.degree. C. or less so as to coat said electrode substrate with a carbon material, and rolling said electrode substrate coated with the carbon material, resulting in a thin-plate shaped carbon electrode having a high density.

An electrode comprising as the main component carbon materials that have a layer structure more disordered than graphite and have hexagonal net faces with a selective orientation. Using said electrode, a secondary battery with a nonaqueous electrolytic solution is manufactured, which comprises a positive electrode, a nonaqueous electrolytic solution, and a negative electrode that has carbon materials as the active substances that can form an electrochemically reversible compound with a light-weight metal element, wherein said positive electrode is made such that its capacity for being charged or discharged is greater than that of said negative electrode.

Electrode and a battery with the same

A method for the manufacture of a pyrolytic graphite with high crystallinity comprising the deposition of graphite directly onto a catalytic substrate by thermal decomposition of a carbon-containing material at low temperatures. An electrode with graphite as an active material and an electrode substrate as a current collector unified, said graphite being pyrolytic graphite that is deposited on a metal electrode substrate with catalytic properties so as to cover said metal electrode substrate by the method. A battery has a pair of positive and negative electrodes, at least one of which is made of graphite as its electrode active material.

Graphite intercalation compound electrodes for rechargeable batteries

A secondary battery using nonaqueous electrolytes that contain a light metal as an active material, and comprising an anode, a cathode and a separator that electrically separates the anode from the cathode, wherein said anode comprises a heat-resistant porous support and a carbon material deposited on said porous support, said carbon material having the following physico-chemical properties: The mean interlayer separation of said carbon active material is in the range of 0.337 to 0.355 nm; the ratio of the Raman intensity of 1360 cm.sup.-1 to that of 1580 cm.sup.-1 with regard to the argon laser Raman spectra of said carbon material is in the range of 0.4 to 1.0; and said carbon material is mainly composed of a carbon having a six-membered ring structure with flat networks and having a selective orientation.

Secondary battery using nonaqueous electrolytes

A powdered positive mixture, a powdered separator mixture, and a powdered negative mixture are filled sequentially into a mold in layers, then the layers of the positive mixture, the separator mixture and the negative mixture are compacted in the mold to form a laminated tablet. The laminated tablet is placed in a container, and is impregnated with an alkaline electrolyte queous solution. Then the container is sealed to produce an alkaline cell.

Alkaline cell manufacturing method

The preferred embodiment provides such a hydrogen-stored electrode extremely useful for application to the cathode of alkaline battery. It makes it possible to manufacture such a useful hydrogen-stored electrode molded into electrode form after activation of hydrogen-stored alloy by means of hydrogen generated by immersion of blends into solution, in which the blends is composed of hydrogen-stored alloy and additives that generate hydrogen through their reaction with the above solution.

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Nara, Japan

Motoo Mohri