Abstract: Provided is a three-dimensional composite of nickel cobalt oxide/graphene on nickel foam as high-performance electrode materials for supercapacitors and a method for preparing the same, and the electrode comprising a three-dimensional nickel cobalt oxide/graphene on nickel foam exhibited an ultrahigh specific capacitance of 2,260 F/g at a current density of 1 A/g.

Abstract: An electricity storage module includes a plurality of electricity storage cells, a plurality of holders, first and second end plates, and a fastening frame. The plurality of holders are stacked in a stacking direction together with the plurality of electricity storage cells to provide a stack. The fastening frame is to fasten the first and second end plates in the stacking direction. The plurality of holders or at least one resin member disposed between the plurality of electricity storage cells and the fastening frame each has a protrusion that protrudes outward in a width direction of the plurality of holders or the at least one resin member. The protrusion is capable of elastic deformation and is to be pressed against the fastening frame to hold the plurality of electricity storage cells in the width direction or a vertical direction.

Abstract: A high density electrode includes a through type aluminum sheet, a plurality of first hollow protrusion members protruded to one side of the through type aluminum sheet, a plurality of second hollow protrusion members protruded to the other side of the through type aluminum sheet, a first active material sheet bonded to the first surface of the through type aluminum sheet, and a second active material sheet bonded to the second surface of the second surface of the through type aluminum sheet.

Abstract: The invention relates to an electrolyte membrane for a liquid anode cell battery. In particular, the electrolyte membrane is coated with a coating protective against decomposition of the electrolyte membrane in contact with a liquid anode.

Abstract: An anode in a lithium ion capacitor, including: a carbon composition comprising: a phenolic resin sourced carbon, a conductive carbon, and a binder as defined herein; and an electrically conductive substrate supporting the carbon composition, wherein the phenolic resin sourced carbon has a disorder by Raman analysis as defined herein; and a hydrogen content; a nitrogen content; an and oxygen content as defined herein. Also disclosed is a method of making the anode, a method of making the lithium ion capacitor, and methods of use thereof.

Abstract: A metal oxide vertical graphene hybrid supercapacitor is provided. The supercapacitor includes a pair of collectors facing each other, and vertical graphene electrode material grown directly on each of the pair of collectors without catalyst or binders. A separator may separate the vertical graphene electrode materials.

Abstract: An electric storage device having a multilayer body in which a separator layer is provided between a positive or negative first electrode and a second electrode of the opposite polarity to the first electrode, an electrolyte, and a package that holds the multilayer body and the electrolyte, and includes at least two first-polarity compound sheets, each configured by integrating a first-polarity collector electrode, a first-polarity active material layer provided on one main surface of the first-polarity collector electrode, and a separator layer that covers at least part of the one main surface. Another main surface of the first-polarity collector electrode in one of the at least two first-polarity compound sheets and another main surface of the first-polarity collector electrode in another of the first-polarity compound sheets are opposed to each other and joined via a joining layer. The joining layer contains a high-polymer having imide coupling in its main chain.

Abstract: An electric energy storage device comprises first and second conductor layers, and positive and negative electrodes. The first conductor layer has both surfaces coated with ionic or dipole material across entire surface thereof. The second conductor layer has both surfaces coated with ionic or dipole material across entire surface thereof. The positive electrode is attached to the first conductor layer. The negative electrode is attached to the second conductor. The stored electrical energy is discharged and output to the electrodes by using an external AC voltage in a predetermined frequency range as a trigger power.

Abstract: Disclosed is a separator for an electrochemical device including a porous polymer film, and a porous coating layer including at least one type of particles of inorganic particles and organic particles and binder polymer, the porous coating layer formed on one surface or both surfaces of the porous polymer film, wherein the porous polymer film has a structure in which multiple fibrils arranged parallel to the surface of the film are stacked in layers, and the fibrils are bound to each other to form a lamellar structure with a size from 130 to 200 nm and tortuosity of the porous polymer film is from 1.60 to 1.90, and an electrochemical device comprising the same.

Abstract: Disclosed is a block supercapacitor, including two or more unit cells configured such that electrodes having a layered structure are disposed to face each other in an in-plane structure, wherein the two or more unit cells comprises an electrode arranged adjacent to each other respectively and the electrodes adjacent to each other are connected in series. As the unit cells are connected in series, a high-voltage supercapacitor can be provided.

Abstract: Apparatus for treating a fluid, which comprises at least one pair of electrode layers power supplied to different polarities, delimiting between them a passage chamber for a first fluid flow containing ionized particles and exerting hydraulic pressure on at least one surface of such electrode layers. Each electrode layer comprises a metal conduction layer electrically connected to a power supply and at least one layer of graphite having a wet surface directed towards the passage chamber and a dry surface compressed, by the hydraulic pressure exerted by the first fluid contained in the passage chamber, directly in adherence against the metal conduction layer, in order to distribute the current of the power supply from the metal conduction layer to the layer of graphite.

Abstract: A polybenzodifuran ladder polymer is disclosed.

Abstract: An graphene composites have reduced graphene oxide and a layered double-hydroxide distributed on the reduced graphene oxide. The composites may also include nanopores formed within the reduced graphene oxide and micropores that may be formed by the reduced graphene oxide. The composites may exhibit superior electrical and/or absorbent properties. Capacitor devices and electrodes containing the composites are also disclosed, as well as methods and systems configured to make and use the composites.

Abstract: Mechanically flexible and optically transparent thin film solid state supercapacitors are fabricated by assembling nano-engineered carbon electrodes in porous templates. The electrodes have textured graphitic surface films with a morphology of interconnected arrays of complex shapes and porosity. The graphitic films act as both electrode and current collector, and when integrated with solid polymer electrolyte function as thin film supercapacitors. The nanostructured electrode morphology and conformal electrolyte packaging provide enough energy and power density for electronic devices in addition to possessing excellent mechanical flexibility and optical transparency.

Abstract: The present invention relates to the electrochemical field, particularly to an electrolyte solute and an electrolyte that are used for a high-voltage supercapacitor, and a high-voltage supercapacitor using the electrolyte. The anion of the electrolyte solute may be one or more selected from tetrafluoroborate, hexafluorophosphate, bis(trifluoromethylsulfonyl) imide, tris (trifluoromethylsulfonyl) methyl and perfluoroalkyl sulfonate, and the cation may be N-methyl-1,4-diazabicyclo[2.2.2]octane ammonium, N,N-dimethyl-1,4-diazabicyclo[2.2.2]octane ammonium, N-methyl-1-azabicyclo[2.2.2]octane ammonium. The high-voltage supercapacitor fabricated by using the electrolyte formulated by the electrolyte solute of the present invention can work stably for a long period of time at a voltage of 2.7 V to 3.2 V, the energy density is greatly increased, the property of high power density is maintained, and the working life is prolonged.

Abstract: Provided is an electrode material with excellent tab weldability and realizing decreased contact resistance with an active material layer. A collector (electrode material) (1) is provided with a metal foil substrate (1a) and a carbon-containing conductive substance (1b), and is configured such that, when observed from a square viewfield with a surface area of 0.1 mm2, the conductive substance (1b) is arranged in islands on the surface of the substrate (1a) with a 1-80% coverage ratio of the conductive substance (1b) on the surface of the substrate (1a).

Abstract: An energy-storage device is formed from a first and a second yarn, each yarn including a plurality of nanowires including aluminum and/or a transition metal. An anode pad is in contact with the first yarn and a cathode pad is in contact with the second yarn. Alternatively, first and second metallic electrodes may be disposed substantially in parallel, with pluralities of nanowires including aluminum and/or a transition metal extending therefrom. In another embodiment, a supercapacitor may include a niobium yarn including a plurality of niobium nanowires. Each niobium nanowire may include at least (i) a first section comprising at least one of unoxidized niobium and niobium oxide; (ii) a second section comprises a niobium pentoxide layer; and (iii) a third section comprises a layer formed by coating the niobium nanowire in at least one of a conductive polymer and a liquid metal.

Abstract: The present disclosure refers to an anode for a secondary battery that comprises a low-temperature additive, and an electrochemical device using the anode. More specifically, the present disclosure provides a carbon-based anode material comprising a low-temperature additive such as lithium titanium oxide (LTO) to improve low-temperature output characteristics, thereby providing high output at room temperature and even a low temperature, and an electrochemical device using the anode.

Abstract: Disclosed are a method of manufacturing a flexible thin-film type super-capacitor device and a super-capacitor device manufactured by the same. The flexible thin-film type super-capacitor device comprises a base film which has flexibility; a separator which is interposed between the base films; and an active material which is formed on the base film. Thus, flexibility is given since thickness is very thin while maintaining high electrical conductivity and high binding property. In addition, economic feasibility is high and mass production is possible. Further, it is possible to stably and efficiently contain a highly corrosive material.

Abstract: A water-based, carbon filler-dispersed coating formulation for forming a conductive coating film contains (1) a hydroxyalkyl chitosan as a resin binder, (2) a conductive carbon filler, and (3) a polybasic acid or its derivative in a water-based medium containing at least water as a polar solvent. In 100 parts by mass of the coating formulation, the hydroxyalkyl chitosan (1) is contained in a range of from 0.1 to 20 parts by mass, and the conductive carbon filler (2) is contained in a range of from 1 to 30 parts by mass. An electricity-imparting material, an electrode plate for an electricity storage device, a process for producing the electrode plate, and the electricity storage device are also disclosed.

Abstract: A battery is composed of a positive electrode in which a positive electrode active material layer including a positive electrode active material is formed on a positive electrode collector, a negative electrode in which a negative electrode active material layer including a negative electrode active material is formed on a negative electrode collector, a separator provided between the positive electrode and the negative electrode, and an electrolyte impregnated in the separator. The battery further includes at least one of a heteropoly acid and a heteropoly acid compound as an additive at least in one of the positive electrode, the negative electrode, the separator, and the electrolyte.

Abstract: The invention relates to micro supercapacitors and nanocomposite active materials and methods of fabrication thereof.

Abstract: The present disclosure relates to electric double layer capacitors (EDLCs) that include an alkylating or arylating agent additive capable of scavenging nucleophilic species generated during operation of the EDLC. The additives for the electric double layer capacitors (EDLCs) including an alkylating or arylating agent are described herein. The alkylating or arylating reagent comprises a compound of the formula I: R—X??(I) wherein R and X are described herein.

Abstract: An electrochemical cell is described, including an anodic chamber and a cathodic chamber separated by an electrolyte separator tube, all contained within a cell case. The cell also includes an electrically insulating ceramic collar positioned at an opening of the cathodic chamber, and defining an aperture in communication with the opening; along with a cathode current collector assembly; and at least one metallic ring that has a coefficient of thermal expansion (CTE) in the range of about 3 to about 7.5 ppm/° C., contacting at least a portion of a metallic component within the cell, and an adjacent ceramic component. An active braze alloy composition attaches and hermetically seals the ring to the metallic component and the collar. Sodium metal halide batteries that contain this type of cell are also described, along with methods for sealing structures within the cell.

Abstract: A method to a fabricate high surface area, high performance supercapacitor includes include applying a metal layer to at least a portion of a nanostructure; after applying the metal layer, oxidizing the metal layer; applying a plurality of additional metal layers onto a previously oxidized metal layer; and after applying each additional metal layer, oxidizing the additional metal layer prior to applying a successive additional metal layer. The metal layers may include a composition comprising at least one metal, the at least one metal selected from the group consisting of ruthenium, titanium, manganese, vanadium, iron, tin, cobalt and nickel. Optionally, each of the additional metal layers may be applied using atomic layering deposition (ALD).

Abstract: The present invention relates to a method of preparing purified carbon nanotubes (CNTs) comprising mixing starting CNTs with an organic solvent in the presence of sonication; substantially removing the organic solvent to obtain a CNT composition; and heating the CNT composition at 200° C. or higher to obtain the purified carbon nanotubes. The present invention further relates to the purified CNTs and cohesive CNT assemblies prepared from the method described herein, and articles (e.g. capacitor, energy storage device or capacitive deionization device) comprising the purified CNTs.

Abstract: A capacitor electrode includes a conductive base member and an electrode part electrically connected to the base member. The electrode part contains carbon particles of a first carbon material capable of adsorbing and desorbing ions. The electrode part further contains voids including first voids with diameters of not less than 0.2 ?m and not more than 1.0 ?m, and second voids with diameters of not less than 0.05 ?m and less than 0.2 ?m. The value of (VA×VA)/(VB×M) is greater than 0.022, where VA is the sum of the volumes of the first voids, VB is the sum of the volumes of the second voids, and M is the volume of the electrode part per unit weight of the electrode part.

Abstract: An electric double layer capacitor electrode, including: an activated carbon having: a pore volume utilization efficiency (PVUE) of from about 200 to 290 F/cm3, wherein PVUE is the ratio of the activated carbon gravimetric capacitance (F/g) to the pore volume (cm3/g) of the activated carbon; a low non-linearity value of from 0.1 to 5%; and a total pore volume of from 0.32 to 0.56 cm3/g. Also disclosed is a method of making an electric double layer capacitor electrode, and a method of characterizing the performance of activated carbon, and the electrode, in an electric double layer capacitor (EDLC) device, as defined, herein.

Abstract: Disclosed are methods for forming carbon-based fillers as may be utilized in forming highly thermal conductive nanocomposite materials. Formation methods include treatment of an expanded graphite with an alcohol/water mixture followed by further exfoliation of the graphite to form extremely thin carbon nanosheets that are on the order of between about 2 and about 10 nanometers in thickness. Disclosed carbon nanosheets can be functionalized and/or can be incorporated in nanocomposites with extremely high thermal conductivities. Disclosed methods and materials can prove highly valuable in many technological applications including, for instance, in formation of heat management materials for protective clothing and as may be useful in space exploration or in others that require efficient yet light-weight and flexible thermal management solutions.

Abstract: A magnetic supercapacitor has a dielectric layer positioned between magnetic layers. The magnetic layers may comprise hard, soft magnetic material or magnetic exchange coupled magnet (i.e. soft and hard magnet composite). A magnetic flux generated by the magnetic layers increases the permittivity of the dielectric layer, thereby increasing the capacitance and, hence, stored energy of the supercapacitor. When the magnetic layers comprise soft magnetic material, the capacitance of the supercapacitor can be varied. In this regard, current passing through a conductive segment within close proximity to the magnetic layers may be controlled in order to tune the capacitance as may be desired.

Abstract: Some embodiments include a capacitive chip having a plurality of capacitive units. The individual capacitive units include alternating electrode layers and dielectric layers in a capacitor stack. The capacitor stack extends across an undulating topography. The undulating topography has peaks and valleys with the peaks being elevationally offset relative to the valleys by a distance within a range of from about 30 microns to about 100 microns. The capacitor stack includes at least about 10 total layers. Some embodiments include apparatuses and multi-chip modules having capacitor chips.

Abstract: A capacitive deionization electrode may include a conductive material and a polymer on a surface of the conductive material. The polymer may have at least one functional group in a single polymer chain.

Abstract: An electrode active material including an ordered mesoporous metal oxide; and at least one conductive carbon material disposed in a pore of the ordered mesoporous metal oxide. Also, an electrode including the electrode active material, and a lithium battery including the electrode.

Abstract: A lithium ion capacitor, including: an anode including: a conductive support; a first mixture coated on the conductive support including: an interclating carbon; a conductive carbon black; and a PVDF binder in amounts as defined herein, and where the PVDF binder has a weight average molecular weight of from 300,000 to 400,000; and a second mixture coated on the first mixture, the second mixture comprising micron-sized lithium metal particles having an encapsulating shell comprised of LiPF6, mineral oil, and a thermoplastic binder. Also disclosed is a method of making and using the lithium ion capacitor.

Abstract: A power storage device that includes a first adhesive member between a first current collector and a second surface layer, and a second adhesive member between a second current collector and a first surface layer. A first electrolyte retaining layer is provided between the first adhesive member and the first current collector. A second electrolyte retaining layer is provided between the second adhesive member and the second current collector.

Abstract: The disclosure discloses electrode material, preparation methods thereof and supercapacitors based thereof. Raw material for preparing the electrode material include PVDF and an additive which can be reacted with the PVDF to generate conductive active substance, the amount of the PVDF is 50 to 99 mass percentage, and the amount of the additive is 1 to 50 mass percentage. A PVDF-based composite film can be prepared from the raw materials; and activating treatment is performed on the film by virtue of a physico-chemical process, so that PVDF can generate a conductive active substance, the contact resistance of the PVDF and the active substance is reduced, and the conductive active substance is distributed in the PVDF-based composite film more uniformly. Button and wound supercapacitor and flexible capacitor, which are prepared from the electrode material, are high in power density and energy density, long in cycle life.

Abstract: An electric double-layer ultracapacitor configured to maintain desired operation at an operating voltage of three volts, where the capacitor includes a housing component, a first and a second current collector, a positive and a negative electrode electrically coupled to one of the first and second current collectors, and a separator positioned between the positive and the negative electrode. The capacitor may also include a protective coating disposed on an inner surface of the housing for the ultracapacitor.

Abstract: A separator for a battery and an electronic device, the separator including a separator substrate; and a separator coating layer coated on at least one surface of the separator substrate, the separator coating layer including a binder and at least one quaternary ammonium salt.

Abstract: This document provides an apparatus including a sintered electrode, a second electrode and a separator material arranged in a capacitive stack. A conductive interconnect couples the sintered electrode and the second electrode. Embodiments include a clip interconnect. In some embodiments, the interconnect includes a comb-shaped connector. In some embodiments, the interconnect includes a wire snaked between adjacent sintered substrates.

Abstract: The present invention discloses a composite structure of graphene and carbon nanotube and a method of manufacturing the same. The composite structure includes graphene platelets and carbon nanotubes, each carbon nanotube growing perpendicular to the planar surface of the graphene platelet. The method includes steps of graphene platelets preparation, chemical precipitation, chemical reduction and carbon nanotube growth. Metal particles are first formed on the graphene platelets through the steps of chemical precipitation and electrochemical reduction, and carbon nanotubes grow in the step of carbon nanotube growth through thermal treatment. Thus, the graphene platelets and the carbon nanotubes of the present invention form a three dimensional structure, and the carbon nanotubes are used as three dimensional spacers and configured between the graphene platelets, which are effectively separated and hard to aggregate or congregate together.

Abstract: Disclosed herein are embodiments of an electrochemical device comprising graphene material made using embodiments of the method disclosed herein. Also disclosed is a graphene electrode comprising the graphene material made using embodiments of the method disclosed herein. The graphene material disclosed herein for use in the disclosed electrochemical devices has superior properties and activity compared to carbon-based materials known and used in the art. The disclosed graphene material can be used in multiple different technologies, such as water treatment, batteries, fuel cells, electrochemical sensors, solar cells, and ultracapacitors (both aqueous and non-aqueous).

Abstract: A high pressure gas hose and related methods of transporting high pressure gases in which gas permeability throughout a length of the high pressure gas hose is reduced. The high pressure gas hose can have an outer tube and the inner tube. The outer tube can be formed of a resistant polymer material such as PTFE. The inner tube can include a matrix formed of PTFE and graphene nano-platelets or nano-particles. The graphene nano-platelets define a tortuous path within the matrix such that gas permeability is reduced through an inner tube wall thickness. Gas permeability throughout a length of the high pressure gas hose can be less that about 20 ml/m/hr. The high pressure gas hose can find practical application in natural gas applications, automotive applications, cooling and refrigeration applications and other applications in which it is desired to have low gas permeability in high pressure applications.

Abstract: Disclosed is a free-standing hybrid nanomembrane capable of energy storage. The free-standing hybrid nanomembrane includes carbon nanotube sheets and a conducting polymer coated on the carbon nanotube sheets. The carbon nanotube sheets are densified sheets formed by evaporating an alcohol from carbon nanotube aerogel sheets. The conducting polymer is coated on the carbon nanotube sheets by vapor phase polymerization. Further disclosed is a method for fabricating the free-standing hybrid nanomembrane.

Abstract: A cathode in a lithium ion capacitor, including: a carbon composition comprising: an activated carbon; a conductive carbon; and a binder in in amounts as defined herein; and a current collector that supports the carbon composition, wherein the activated carbon has: a surface area of from 500 to 3000 m2/g; a pore volume where from 50 to 80% of the void volume is in pores less than 10 ?; a pore volume higher than 0.3 cm3/gm occupied by the micropores less than 10 ?; and a microporosity of greater than 60% of the total pore volume. Also disclosed is a method of making the cathode and using the cathode in a lithium ion capacitor.

Abstract: An electric double-layer ultracapacitor configured to maintain desired operation at an operating voltage of three volts, where the capacitor includes a housing component, a first and a second current collector, a positive and a negative electrode electrically coupled to one of the first and second current collectors, and a separator positioned between the positive and the negative electrode. At least one of the positive electrode and the negative electrode can include a treated carbon material, where the treated carbon material includes a reduction in a number of hydrogen-containing functional groups, nitrogen-containing functional groups and/or oxygen-containing functional groups.

Abstract: A capacitor includes a capacitor element that is a wound element or an element other than the wound element, and that includes electrode bodies each of which is in an anode side and a cathode side, and separators that intervenes between the electrode bodies; a sealing member that seals an opening of a case member accommodating the capacitor element; at least one electrode protrusion that protrudes from one of the electrode bodies on an element end-face of the capacitor element, at least one of current collector plate that is connected to the electric protrusion; and at least one terminal member that is disposed in the sealing member, and is superposed on the current collector plate, a side face part of the terminal member being welded to a side face part of the current collector plate.

Abstract: An anode in a lithium ion capacitor, including: a carbon composition comprising: a coke sourced carbon, a conductive carbon, and a binder as defined herein; and an electrically conductive substrate supporting the carbon composition, wherein the coke sourced carbon has a disorder by Raman analysis as defined herein; and a hydrogen content; a nitrogen content; an and oxygen content as defined herein. Also disclosed is a method of making the anode, a method of making the lithium ion capacitor, and methods of use thereof.

Abstract: To provide a capacitor capable of having a larger capacity than a case where only a solid electrolyte is simply used as a dielectric material of the capacitor. The capacitor (1) includes a solid electrolytic body (3) and a plurality of electrodes (5, 7) which is formed on the solid electrolytic body (3) and disposed opposite to each other with the solid electrolytic body (3) interposed therebetween, and the solid electrolytic body (3) includes an oxide-based lithium ion conductive solid electrolyte as a base material and contains oxide particles formed of a part of elements configuring the base material.

Abstract: An electric double-layer capacitor is provided which is larger in electrostatic capacitance, and can be much higher in rated voltage, than that in the prior art using a liquid electrolyte solely composed of an ionic liquid. Having an electrolyte and electrodes, the capacitor incorporates an atom encapsulated fullerene or an atom encapsulated fullerene salt in the electrolyte. The electrolyte can either be a liquid solution or a solid. With the electrolyte being a solid, cations of the atom encapsulated fullerene or atom encapsulated fullerene salt may either be made movable or static in the electrolyte.

Abstract: A high voltage electrode includes a through type aluminum sheet, a plurality of first hollow protrusion members protruded to one side of the through type aluminum sheet, a plurality of second hollow protrusion members protruded to the other side of the through type aluminum sheet, a metal oxidation layer coated on the through type aluminum sheet, the plurality of first hollow protrusion members, and the plurality of second hollow protrusion members, a first active material sheet bonded to the metal oxidation layer so that it is placed in the first surface of the through type aluminum sheet, and a second active material sheet bonded to the metal oxidation layer so that it is placed in the second surface of the through type aluminum sheet.