A lithium-ion hybrid supercapacitor comprising (i) an electrode comprising nitrogen-doped carbon nanotubes (N-CNTs), and (ii) an electrode comprising an electrically conductive graphene material. The supercapacitor can comprise an electrolyte which is a solution of (i) a lithium salt selected from Li[PF.sub.2(C.sub.2O.sub.4)2], Li[SO.sub.3CF.sub.3], Li[N(CF.sub.3SO.sub.2).sub.2], Li[C(CF.sub.3SO.sub.2).sub.3], Li[N(SO.sub.2C.sub.2F.sub.5).sub.2], LiClO.sub.4, LiPF.sub.6, LiAsF.sub.6, LiBF.sub.4, LiB(C.sub.6F.sub.5).sub.4, LiB(C.sub.6H.sub.5).sub.4, Li[B(C.sub.2O.sub.4).sub.2], Li[BF.sub.2(C.sub.2O.sub.4)], and a mixture of any two or more thereof, and (ii) a solvent selected form dimethyl carbonate (DMC), ethyl methyl carbonate (EMC), diethyl carbonate (DEC), methyl propyl carbonate (MPC), ethyl propyl carbonate (EPC), ethylene carbonate (EC), propylene carbonate (PC), and a mixture of any two or more thereof

Provided herein are composite conductors, characterized by having copper deposits inside the bulk rather than on the outer surface of a non-metallic conductive porous matrix, such as CNT fabric, as well as a process for obtaining the same. The composite conductors provided herein are also characterized by a low specific weight and a high ampacity compared to metal conductors of similar size and shape.

The negative electrode active material includes a first composite particle. The first composite particle includes a first active material particle, a second active material particle, an electronic conductor, and a solid electrolyte film. The first active material particle includes an alloy-based negative electrode active material. The second active material particle includes graphite. The electronic conductor is placed on a surface of the first active material particle. The solid electrolyte film covers the first active material particle. At least part of the electronic conductor is embedded in the solid electrolyte film. The second active material particle supports the first active material particle, the solid electrolyte film, and the electronic conductor.

A consumer product having a sensor for controlling the operation of the consumer product, a system and method including the consumer product and a sensor are provided. The system and method including a central communication unit capable of receiving incoming signals and sending outgoing instructions from the consumer product and sensor. The central communication unit communicably connected with a memory configured to store an algorithm. The sensor has a cross-linked carbon nanotube network comprising: a plurality of carbon nanotubes; and at least one linker that covalently links adjacent carbon nanotubes. The algorithm controls the consumer product based on incoming signals sent from the sensor to the central communication unit.

Carbon nanostructures are used to prepare electrode compositions for lithium ion batteries. In one example, an anode for a Li ion battery includes three-dimensional carbon nanostructures made of highly entangled nanotubes, fragments of carbon nanostructures and/or fractured nanotubes, which are derived from the carbon nanostructures, are branched and share walls with one another. Amounts of carbon nanostructures employed can be less than or equal to 0.5 weight % relative to the weight of the electrode composition.

A method for carbon nanotube purification, preferably including: providing carbon nanotubes; depositing a mask; and/or selectively removing a portion of the mask; and optionally including removing a subset of the carbon nanotubes and/or removing the remaining mask.

The present invention provides an electrode that is excellent in conductivity and improves the power density and energy density of a power storage device, a method for manufacturing the same, and a power storage device using the same. The electrode of the present invention is an electrode containing at least a graphene aggregate having a particle diameter of 0.1 μm or more and less than 100 μm, wherein the graphene aggregate is an aggregate of graphene basic structures each having graphene layers among which a fibrous material is located. A method for manufacturing the electrode of the present invention comprises a step of mixing the above-mentioned graphene basic structures with at least a lower alcohol having 1 or more and 5 or less carbon atoms to form a graphene aggregate in which the graphene basic structures are aggregated, and a step of forming a film using the graphene aggregate.

A method for forming colloidosomes with a shell comprising carbon particles and inorganic nano-particles, are provided. Further, compositions emulsions and articles comprising the colloidosomes are provided.

An electrode membrane having high adhesiveness and electrical conductivity can be produced using carbon nanotubes each of which meets the following requirements (1) and (2). (1) A peak appears at a diffraction angle 2θ=25°±2° in powder X-ray diffraction analysis, and the half value width of the peak is 2° or more and less than 3°. (2) The G/D ratio is 1.5 to 5.0, wherein G represents the maximum peak intensity in the range from 1560 to 1600 cm.sup.−1 and D represents the maximum peak intensity in the range from 1310 to 1350 cm.sup.−1 in Raman spectra.

Carbon nanotubes and dispersions containing carbon nanotubes are provided. Methods of processing carbon nanotubes and dispersions containing purified carbon nanotubes are provided.