Sharp Kabushiki Kaisha Corporation

Tomonari Suzuki

Yoshikazu Yoshimoto

Shigeo Nakajima

Masaru Yoshida

Hiroshi Wada

Yoshiyuki Higashigaki

Toshio Inoguchi

Hideaki Tanaka

Yoshimitsu Tajima

Motoo Mohri

Michiyo Kasahara

Nobuhiro Yanagisawa

Mitsuhiko Yoshikawa

A method for preparing a graphite intercalation compound having a metal or a metal compound inserted between adjacent graphite layers, comprising simultaneously introducing a mixture of a vapor of both a hydrocarbon compound and an organo metallic compound together with a carrier gas into a reactor, and decomposing said hydrocarbon compound and said organo metallic compound on a single-crystalline substrate at a relatively low temperature.

Method for preparing a graphite intercalation compound having a metal or

The disclosure is directed to a method for converting between heat energy and electric energy which is characterized in that a carbon intercalation compound is employed as a thermoelectric material by utilizing a temperature difference in a direction perpendicular to the structure of carbon layers, or a method for producing a light-heat converting material which is characterized in that a thin metallic layer like a translucent mirror is caused to adhere to the inner surface of a light transmissive hollow tube by pyrolytically decomposing at a temperature approximately below 1000.degree. C., with hydrocarbons being introduced into the hollow tube at the rate of a predetermined amount per hour.

Materials for thermoelectric and light-heat conversion

A method for preparing graphite intercalation compounds having metal or metal compounds. The method consists of the simultaneous thermal decomposition of two kinds of starting materials by a CVD (Chemical Vapor Deposition) method in which hydrocarbon as a source material for the host graphite and other organometal reagents or metal halides for guest metal species or metal compound are decomposed simultaneously in a reactor in order to intercalate the metal species or metal compound into carbon being deposited on the substrate.

Method for producing graphite intercalation compound

A graphite electrode includes a first step of a substrate a deposition layer of fine globular graphite particles on the substrate, and subsequently a metal film of an iron group element or an alloy thereof on the deposition layer, and then a graphite layer on the metal film to obtain the electrode.

Graphite electrode

A thermal CVD for the production of an electrode comprising a graphite composition as an active material is disclosed wherein the graphite composition is composed of high-crystalline graphite having interlayer spacings in the range of 0.3354 to 0.3400 nm and low-crystalline graphite having interlayer spacing in the range of 0.343 to 0.356 nm.

Thermal CVD for the production of an electrode comprising a graphite

A process for producing a graphite electrode includes a first step of forming a deposition layer of fine globular graphite particles on a substrate, and subsequently the step of forming a metal film of an iron group element or an alloy thereof on the deposition layer, and then forming a graphite layer on the metal film to obtain an electrode having the graphite layer supported on the substrate.

Process for producing graphite electrodes

Method for metal or metal compounds inserted between adjacent graphite

An electrode comprising a graphite composition as an active material is disclosed wherein the graphite composition is composed of high-crystalline graphite having interlayer spacings in the range of 0.3354 to 0.3400 nm and low-crystalline graphite having interlayer spacings in the range of 0.343 to 0.355 nm.

Electrode and a method for the production of the same

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 preparing pyrolytic carbon film having a highly ordered graphite structure which comprises introducing an aromatic compound not having a condensed ring, together with a carrier gas into a reaction chamber, thermally decomposing the aromatic compound at a temperature up to 1,000.degree. C., and depositing the carbon film onto a single-crystalline substrate.

Method for the production of carbon films having an oriented graphite

A planar conductive piece has groups of conductive and insulative lines arranged in mutually crossing directions and formed unistructurally. The individual conductive lines are kept in mutually non-contacting relationship such that the two groups of lines form a planar conductive piece with electrical anisotropy.

Planar conductive piece with electrical anisotrophy

There is disclosed a secondary battery wherein either one of positive electrode and negative electrode elements is made of an active material, the color of which is changed according to a voltage between these electrodes and wherein= a window is formed for observing the color change of the electrode. Further, an electrochromic display device is disclosed in which a working electrode is made of a pyrolytic carbonaceous material which is obtained by thermal decomposition of a hydrocarbon compound at a low temperature of about 1,000.degree. C.

Secondary battery

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.

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Kashihara, Japan

Tomonari Suzuki