A carbon nanotube (CNT) assembled thin film modified steel wire array electrode, a preparation method and application thereof. The array electrode includes: a surface of a steel wire is negatively modified, and the surface of the steel wire is assembled with a plurality of layers of CNT thin films; one end of the steel wire is welded to a conductor, and a welding position between the steel wire and the conductor is wrapped with an insulating heat shrinkable tube; and the insulating template and the steel wire are encapsulated and cured by using an epoxy resin. The preparation method of the array electrode of the invention mainly includes the following steps: first, performing negative modification on a steel wire, then, assembling CNT thin films on the steel wire, and preparing the modified array steel wire into the CNT assembled thin film modified steel wire array electrode.

A carbon nanotube (CNT) assembled thin film modified steel wire array electrode, a preparation method and application thereof. The array electrode includes: a surface of a steel wire is negatively modified, and the surface of the steel wire is assembled with a plurality of layers of CNT thin films; one end of the steel wire is welded to a conductor, and a welding position between the steel wire and the conductor is wrapped with an insulating heat shrinkable tube; and the insulating template and the steel wire are encapsulated and cured by using an epoxy resin. The preparation method of the array electrode of the invention mainly includes the following steps: first, performing negative modification on a steel wire, then, assembling CNT thin films on the steel wire, and preparing the modified array steel wire into the CNT assembled thin film modified steel wire array electrode.

The present disclosure relates to cables and methods of making cables. In at least one embodiment, a method for making a cable includes introducing a conductive material onto a sheet including a heat-shrink material. The method includes compressing a first portion of the sheet onto a second portion of the sheet to form a sheath having an interior volume, where the conductive material is disposed in the interior volume. In at least one embodiment, a cable includes a sheath including a heat-shrink material. The cable includes an interior volume including a conductive material including a conductive carbon material.

The present disclosure relates to cables and methods of making cables. In at least one embodiment, a method for making a cable includes introducing a conductive material onto a sheet including a heat-shrink material. The method includes compressing a first portion of the sheet onto a second portion of the sheet to form a sheath having an interior volume, where the conductive material is disposed in the interior volume. In at least one embodiment, a cable includes a sheath including a heat-shrink material. The cable includes an interior volume including a conductive material including a conductive carbon material.

The present invention provides a carbonaceous material suitable for a negative electrode active material for non-aqueous electrolyte secondary batteries (e.g., lithium ion secondary batteries, sodium ion secondary batteries, lithium sulfur batteries, lithium air batteries) having high charge/discharge capacities, and preferably high charge/discharge efficiency and low resistance, a negative electrode comprising the carbonaceous material, a non-aqueous electrolyte secondary battery comprising the negative electrode, and a production method of the carbonaceous material. The present invention relates to a carbonaceous material having a nitrogen content obtained by elemental analysis of 3.5 mass % or more, a ratio of nitrogen content and hydrogen content (R.sub.N/H) of 6 or more and 100 or less, a ratio of oxygen content and nitrogen content (R.sub.O/N) of 0.1 or more and 1.0 or less, and a carbon interplanar spacing (d.sub.002) observed by X-ray diffraction measurement of 3.70 Å or more.

The present invention provides a carbonaceous material suitable for a negative electrode active material for non-aqueous electrolyte secondary batteries (e.g., lithium ion secondary batteries, sodium ion secondary batteries, lithium sulfur batteries, lithium air batteries) having high charge/discharge capacities, and preferably high charge/discharge efficiency and low resistance, a negative electrode comprising the carbonaceous material, a non-aqueous electrolyte secondary battery comprising the negative electrode, and a production method of the carbonaceous material. The present invention relates to a carbonaceous material having a nitrogen content obtained by elemental analysis of 3.5 mass % or more, a ratio of nitrogen content and hydrogen content (R.sub.N/H) of 6 or more and 100 or less, a ratio of oxygen content and nitrogen content (R.sub.O/N) of 0.1 or more and 1.0 or less, and a carbon interplanar spacing (d.sub.002) observed by X-ray diffraction measurement of 3.70 Å or more.

Previous electrochemically-powered yarn muscles cannot be usefully operated between extreme negative and extreme positive potentials, since strokes during electron injection and during hole injection partially cancel because they are in the same direction. Unipolar-stroke carbon nanotube yarn muscles are described in which muscle strokes are additive between extreme negative and extreme positive potentials, and stroke increases with potential scan rate. These electrochemical artificial muscles include an electrically conducting twisted or coiled yarn and a material that dramatically shifts the potential of zero charge of the electrochemically actuated yarn.

Composites of silicon and various porous scaffold materials, such as carbon material comprising micro-, meso- and/or macropores, and methods for manufacturing the same are provided. The compositions find utility in various applications, including electrical energy storage electrodes and devices comprising the same.

Composites of silicon and various porous scaffold materials, such as carbon material comprising micro-, meso- and/or macropores, and methods for manufacturing the same are provided. The compositions find utility in various applications, including electrical energy storage electrodes and devices comprising the same.

A method of manufacturing a graphene fiber is provided. The method includes preparing a source solution including graphene oxide, supplying the source solution into a base solution containing a foreign element to form a graphene oxide fiber, separating the graphene fiber from the base solution and cleaning and drying to obtain the graphene oxide fiber containing the foreign element, and performing thermal treatment to the dried graphene oxide fiber containing the foreign element to form a graphene fiber doped with the foreign element. Elongation percentage of the graphene fiber is adjusted by concentration and spinning rate of the source solution.