Nippon Chemi-con Corporation

Aoi Electronics Co., Ltd.

Shunzo Suematsu

Katsuhiko Naoi

Kenji Tamamitsu

Kenji Machida

Wako Naoi

Daisuke Horii

A method of manufacturing a composite materials in which a carbon material and a metal compound can maintain a nanosized form as a final product is realized, and a method for manufacturing a superior electrode material is provided. A metal compound precursor is formed from a metal compound material source, and a mixture of the metal compound precursor and a carbon material is calcinated. In the treatment to form the precursor, a treatment of absorbing one of the metal compound material sources to the functional group of the carbon material and a treatment of producing on the carbon material a treatment of reacting the remaining material source of the adsorbed metal compound material source on the carbon material to produce a metal compound precursor are performed in separate steps.

Manufacturing method of electrode material

An electrical double-layer capacitor electrode with excellent capacitance characteristics is obtained together with a manufacturing method therefor. Paper-molded sheetof carbon nanotubes is integrated with etched foilconstituting a collector, by means of bumps and indentationsformed on the surface of etched foilto prepare an electrical double-layer capacitor electrode. Alternatively, carbon nanotubesgrown around core catalyst particles on substrateare integrated with etched foilby means of bumps and indentationsformed on the surface of etched foilto prepare an electrical double-layer capacitor electrode. To manufacture these electrodes, this carbon nanotube sheetor substratewith carbon nanotubes grown thereon is laid over bumps and indentationson the surface of etched foil, and the sheet or substrate and the foil are pressed under 0.01 to 100 t/cm2 of pressure to integrate the carbon nanotubes with the etched foil.

Electrode for electric double layer capacitor and method for producing the same

An inorganic/organic composite material which is advantageous in physical characteristics (mechanical strength), chemical characteristics (thermal stability) and electric characteristics (electric conductivity), as compared with a sole system, as being compounded in nano order. An improved energy storage device using the inorganic/organic composite nano-beads, and especially an improved electrochemical capacitor for covering the range of a power energy density which cannot be achieved with devices of the prior art. A method of producing the inorganic/-organic composite nano-beads. The inorganic/organic composite nano-beads have a three-dimensional structure in which nuclei are made of an inorganic material having a particle diameter of nano order and a high electronic conductivity, and are covered with thin films of an organic conductive material.

Growing community of inventors

Tokyo, Japan

Shunzo Suematsu