Details an invention of an electrical device consisting of a three-dimensional structure comprising an unlimited number of interpenetrating elements and the use of the structure in the fabrication methods for electrical, electro-optical and electro-chemical devices.

Details an invention of an electrical device consisting of a three-dimensional structure comprising an unlimited number of interpenetrating elements and the use of the structure in the fabrication methods for electrical, electro-optical and electro-chemical devices.

Embodiments of the present disclosure are directed to carbon-containing composites which are suitable for use as electrodes in electrochemical systems. The composites are formed from a scaffold of graphene and carbon nanotubes. Graphene flakes form a plurality of generally planar sheets (e.g., extending in an x-y plane) separated in the direction of a composite axis (e.g., along a z-axis) and approximately parallel to one another. The carbon nanotubes extend between the graphene sheets and at least a portion of the carbon nanotubes are aligned in approximately the same direction, at a defined angle with respect to the composite axis. At least a portion of the scaffold is embedded within a porous carbon matrix (e.g., an activated carbon, a polymer derived graphitic carbon, etc.).

Embodiments of the present disclosure are directed to carbon-containing composites which are suitable for use as electrodes in electrochemical systems. The composites are formed from a scaffold of graphene and carbon nanotubes. Graphene flakes form a plurality of generally planar sheets (e.g., extending in an x-y plane) separated in the direction of a composite axis (e.g., along a z-axis) and approximately parallel to one another. The carbon nanotubes extend between the graphene sheets and at least a portion of the carbon nanotubes are aligned in approximately the same direction, at a defined angle with respect to the composite axis. At least a portion of the scaffold is embedded within a porous carbon matrix (e.g., an activated carbon, a polymer derived graphitic carbon, etc.).

An electrochemical device includes a positive electrode, a negative electrode, and separators which are stacked and wound together, and electrolytic solution. A negative-electrode terminal is provided which is made of metal, and has a joining part which is a part joined to the principal face of the negative-electrode collector. The negative electrode has a first width, the positive electrode has a second width, which is smaller than the first width, and the separators have a third width, which is greater than the first width, along the direction parallel with the center axis of winding. The length of the joining part along the direction parallel with the center axis of winding is equal to or greater than the second width, but equal to or smaller than the third width.

An electrochemical device includes a positive electrode, a negative electrode, and separators which are stacked and wound together, and electrolytic solution. A negative-electrode terminal is provided which is made of metal, and has a joining part which is a part joined to the principal face of the negative-electrode collector. The negative electrode has a first width, the positive electrode has a second width, which is smaller than the first width, and the separators have a third width, which is greater than the first width, along the direction parallel with the center axis of winding. The length of the joining part along the direction parallel with the center axis of winding is equal to or greater than the second width, but equal to or smaller than the third width.

There is provided a non-aqueous electrolyte solution enabling fabrication of a non-aqueous electrolyte solution secondary battery which achieves suppressed gas generation when used under high temperature environment and the improved residual capacity of the battery, and the improved cycle characteristic thereof, and further, is excellent in discharge load characteristic (dischargeable at high rate), and a non-aqueous electrolyte solution secondary battery using the non-aqueous electrolyte solution. There is provided a non-aqueous electrolyte solution used in a non-aqueous electrolyte solution secondary battery including a positive electrode having a positive electrode active material capable of absorbing and releasing a metal ion and a negative electrode having a negative electrode active material capable of absorbing and releasing a metal ion, which solution contains a bismaleimide compound having a specific structure, and a non-aqueous electrolyte solution secondary battery using the solution.

An energy storage device includes a case. The case includes a cover body where an electrolyte solution filling port is formed, and an electrolyte solution plug that closes the electrolyte solution filling port. The electrolyte solution plug includes a shaft part inserted into the electrolyte solution filling port, and a projecting part that projects from a periphery of the shaft part and is bonded to the cover body. In the cover body, a space adjacent to the shaft part is formed around the electrolyte solution filling port, and a tip end of the shaft part is disposed in the electrolyte solution filling port.

A method of reducing outgassing in a supercapacitor comprised of carbon-containing electrodes and at least one ionic liquid is characterised by the steps of (a) contacting the carbon-containing electrodes with a tetrafluoroborate salt; (b) applying a potential difference across the carbon-containing electrodes whilst in contact with the salt in a cycle during which electrical charge is stored on and discharged from the electrodes; and (c) continuing further cycles of step (b) until such time as substantially no further outgassing from the system occurs.

A composition for forming a protective film that is placed between a positive electrode and a negative electrode of an electrical storage device, includes polymer particles (A1), polymer particles (A2), and a liquid medium, the polymer particles (A1) including a repeating unit derived from a compound that includes two or more polymerizable unsaturated groups in an amount of less than 15 parts by mass based on 100 parts by mass of the polymer particles (A1), and the polymer particles (A2) including a repeating unit derived from a compound that includes two or more polymerizable unsaturated groups in an amount of 20 to 100 parts by mass based on 100 parts by mass of the polymer particles (A2).