Abstract: In some embodiments, the present invention is directed to processes for the combination of injecting charge in a material electrochemically via non-faradaic (double-layer) charging, and retaining this charge and associated desirable properties changes when the electrolyte is removed. The present invention is also directed to compositions and applications using material property changes that are induced electrochemically by double-layer charging and retained during subsequent electrolyte removal. In some embodiments, the present invention provides reversible processes for electrochemically injecting charge into material that is not in direct contact with an electrolyte. Additionally, in some embodiments, the present invention is directed to devices and other material applications that use properties changes resulting from reversible electrochemical charge injection in the absence of an electrolyte.

Abstract: Disclosed is an ultracapacitor having electrodes containing mineral microtubules, an electrolyte between the electrodes, and a separator in the electrolyte to provide electrical insulation between the electrodes, while allowing ion flow within the electrolyte. The electrodes may be formed from a paste containing microtubules, a conductive polymer containing mineral microtubules, or an aerogel containing the mineral microtubules. The mineral microtubules may be filled with carbon, a pseudocapacitance material, or a magnetoresistive material. The mineral microtubules may also be coated with a photoconductive material.

Abstract: The invention concerns a connection system between batteries or banks of capacitors associated with a circuit, for example of the inverter type and whereof the capacitors are connected by a busbar consisting of two thin bars of different polarities stacked and separated by an insulating layer. Each busbar comprises at least one protuberance designed to co-operate with a linking member between two protuberances derived from two batteries or banks of adjacent capacitors. The linking member comprises two conductive strips designed to be contacted each with the bars of same polarity of two opposite protuberances, said strips being arranged on either side of an insulating layer. One of the protuberances or of each co-operating zone of the linking member with one protuberance comprises a clamp forming a slide enabling the other to be slidingly positioned perpendicular to the axis of the link.

Abstract: A capacitor includes a container, a positive electrode, a negative electrode, and a fluid electrolyte. The positive electrode includes a metal substrate and an active material provided in contact with the metal substrate. The active material includes at least one of poly(ethylene 3,4-dioxythiophene) and a titanate.

Abstract: Electrolytic capacitors are provided having an airtight housing, electrodes immersed in an electrolytic solution, electrical contacts connected to the electrodes, and a device for sorption of harmful substances. The device is made of a multilayer polymeric sheet (10), which is formed of an inner layer (12) of polymeric material, containing particles of one or more getter materials (11) for sorption of the harmful substances, and at least one protective layer (13) of a polymeric material impermeable to the electrolyte. All of the polymeric materials are permeable to the harmful substances.

Abstract: An electrode for an electric double layer capacitor including a current collector electrode and an active substance carried on the current collector electrode, wherein the active substance is composed of a carbon-based fiber and a conductive polymer fiber formed by the electrospinning method, whereby a high capacity capacitor electrode having of a larger specific surface area than a conventional capacitor electrode and an electric double layer capacitor using the same is provided.

Abstract: One embodiment includes a first capacitor stack including a first plurality of substantially planar anodes and a first plurality of substantially planar cathodes, a second capacitor stack including a second plurality of anode layers and a second plurality of cathode layers, an interconnect coupling the first capacitor stack and the second capacitor stack electrically in parallel, the interconnect adapted to permit rotation of the first capacitor stack with respect to the second capacitor stack, wherein the first capacitor stack and the second capacitor stack are adapted to deliver a defibrillation pulse to the anode terminal and the cathode terminal at a voltage of from approximately 410 volts to approximately 610 volts.

Abstract: A solution or dispersion of an ion-permeable compound, a carbon fine particle a, and a solvent is coated on a conductive sheet such as an aluminum foil, the coat is dried to form a film a. which allows to obtain a collector for an electric double layer capacitor. A solution or dispersion of a binder, a carbon fine particle b, an activated carbon b, and a solvent is coated on the film a, the coat is dried to form a film b, which results in obtaining an electrode for an electric double layer capacitor. The electrode is piled on a separator, and immersed in an electrolytic solution to obtain an electric double layer capacitor.

Abstract: To provide electric double layer capacitors which have large electrostatic capacitances. Graphite with a BET surface area of from 10 to 300 m2/g, wherein the graphite has an energy storing ability of 10 to 200 mAh at a voltage of 1 V or more based on the oxidation-reduction potential of lithium.

Abstract: An electrical double layer capacitor comprises an element and a case which houses the element. The element has an anode charge collector, anode, separator, cathode and cathode charge collector. The anode and cathode consist of a porous layer containing electrically conducting porous particles as a constituent material. The anode charge collector is disposed in electrical contact with the anode. The cathode charge collector is disposed in electrical contact with the cathode. The thickness of the element is 600 ?m or less. The sum of the anode thickness and cathode thickness is set to 80% or less of the thickness of the element.

Abstract: A preferred embodiment of the present invention is a meso-porous nanocomposite material comprising: (A) nano-scaled graphene platelets, wherein each of the platelets comprises a sheet of graphite plane or multiple sheets of graphite plane, and the platelets have a thickness no greater than 100 nm (preferably smaller than 10 nm) and an average length, width, or diameter no greater than 10 ?m (preferably smaller than 500 nm); and (B) an electrically conducting binder or matrix material attached or bonded to the platelets to form the nanocomposite material having liquid accessible pores, which provide a surface area greater than about 100 m2/gm, preferably greater than 500 m2/gm, and most preferably greater than 1000 m2/gm. Also disclosed is a capacitor that includes at least an electrode comprising such a meso-porous nanocomposite material. A supercapacitor featuring such a nanocomposite exhibits an exceptionally high capacitance value.

Abstract: Provided is an electric double layer capacitor including a large capacity single cell having a large electrostatic capacity and a small capacity single cell are connected to the same exterior case in parallel, and a thickness of a separator of the large capacity single cell is made thicker than a thickness of a separator of the small capacity single cell. With this structure, a supply amount of an electrolyte solution to the large capacity single cell is markedly increased compared with the small capacity single cell, thereby being capable of preventing degradation of the large capacity single cells and the small capacity single cells and providing the electric double layer capacitor having an excellent cycle life and having a large power storage amount while keeping characteristics capable of instantaneously allowing large current to flow.

Abstract: Disclosed are supercapacitors having organosilicon electrolytes, high surface area/porous electrodes, and optionally organosilicon separators. Electrodes are formed from high surface area material (such as porous carbon nanotubes or carbon nanofibers), which has been impregnated with the electrolyte. These type devices appear particularly suitable for use in electric and hybrid electric vehicles.

Abstract: An electric double layer capacitor includes an anode, a cathode, and an electrolytic solution provided between the anode and the cathode. The anode may be a niobium porous sintered body with an oxide film formed as a dielectric layer on a surface thereof. The cathode allows an electric double layer at an interface with the electrolytic solution. The electric double layer capacitor has a large capacitance and increased voltage.

Abstract: Electrolytic capacitors are provided having an airtight housing, electrodes immersed in an electrolytic solution, electrical contacts connected to the electrodes, and a device for sorption of harmful substances. The device is made of a multilayer polymeric sheet (10), which is formed of an inner layer (12) of polymeric material, containing particles of one or more getter materials (11) for sorption of the harmful substances, and at least one protective layer (13) of a polymeric material impermeable to the electrolyte. All of the polymeric materials are permeable to the harmful substances.

Abstract: An electrical insulation system and method for electrical power storage component separation is disclosed. Some implementations of the system use various forms of polyurethane elastomer based material such as tapes to electrically separate various components of electrical power storage devices such as battery packs. These components can include cells, connecting tabs, printed circuit assemblies, solder joints, nickel strips, and other conductive members.

Abstract: There are provided a microporous film for an electric storage device separator, which can increase energy density and power density when used in an electric storage device, and which is excellent in handling properties in a processing step to the electric storage device, as well as an electric storage device separator and an electric storage device, using the microporous film. Specifically, provided is a microporous film for an electric storage device separator, characterized by including a porosity of 70% or more, a strength of 40 MPa or more in a longitudinal direction, an average pore size of from 40 to 400 nm, anuclear pores, and exhibiting biaxial orientation.

Abstract: The electrical double layer capacitor includes a case, an electrolyte stored in the case, a positive electrode, a negative electrode, and a molecular sieve, wherein the electrolyte contains cation and anion, and the molecular sieve suppresses either one or both of the adsorption of cation onto a surface of the positive electrode and the adsorption of anion onto a surface of the negative electrode. Due to this configuration, it is possible to provide an electrical double layer capacitor having high withstand voltage and long life.

Abstract: A coin-shaped storage cell (1) has a pair of polarizable electrodes (17, 18), an insulating separator (21) interposed between the polarizable electrodes, an electrolytic solution (22) impregnated in the polarizable electrodes (17, 18) and the separator (21), a metal case (11) for housing the polarizable electrodes (17, 18), an insulating ring packing (15) arranged in the metal case, and a top lid (13) which is caulked integrally with the metal case (11) via the ring packing (15). The inner bottom surface of the metal case (11) is provided with recessed and projected portions.

Abstract: A hybrid capacitive storage system and method for storing electrical energy and hydrogen comprising at least a first dielectric layer, which dielectric layer is substantially impermeable to hydrogen. The hybrid storage system further comprises at least a first catalytic electrode layer disposed on at least a portion of a first surface of said first dielectric layer, which first catalytic electrode layer converts molecular hydrogen into atomic hydrogen, an electrode layer disposed on at least a portion of a second surface of said first dielectric layer, which electrode layer is selectively electrically connected to said first catalytic electrode layer; and at least one field generator for selectively applying a field to said storage system.

Abstract: Asymmetric supercapacitors comprise: a positive electrode comprising a current collector and a first active material selected from the group consisting of manganese dioxide, silver oxide, iron sulfide, lithium manganese oxide, lithium cobalt oxide, lithium nickel oxide, lithium iron phosphate, and a combination comprising at least one of the foregoing active materials; a negative electrode comprising a carbonaceous active material; an aqueous electrolyte solution selected from the group consisting of aqueous solutions of hydroxides of alkali metals, aqueous solutions of carbonates of alkali metals, aqueous solutions of chlorides of alkali metals, aqueous solutions of sulfates of alkali metals, aqueous solutions of nitrates of alkali metals, and a combination comprising at least one of the foregoing aqueous solutions; and a separator plate. Alternatively, the electrolyte can be a non-aqueous ionic conducting electrolyte or a solid electrolyte.

Abstract: The present invention provides a binder for an electric double layer capacitor comprising; a polymer (A) containing an acrylate monomer unit, and having two or more glass transition temperatures; a composition for the electric double layer capacitor containing this binder and an active material for an electrode; an electrode for the electric double layer capacitor in which this composition is layered on a current collector, so as to exhibit excellent heat resistance and flexibility and a high binding force between the active material for the electrode and the current collector; and an electric double layer capacitor comprising this electrode, so as to exhibit a large electrostatic capacity and a small internal resistance.

Abstract: An electrode material for an electric double layer capacitor which include spherical particles (A) having an electrode active material and a thermoplastic binder, wherein the spherical particles (A) have a sphereness degree of not larger than 20% as defined by the equation: sphereness degree (%) (Ll?Ls)×100/La, where Ls is short axis diameter, Ll is long axis diameter, and La=(Ll+Ls)/2. The particles (A) are made preferably by a process of mixing together the electrode active material with the thermoplastic binder in a solvent to form a liquid dispersion; and then, spray-drying the liquid dispersion. An electric double layer capacitor having the electrode made from the electrode material is characterized as having low internal resistance and high capacitance.

Abstract: A method for producing activated carbon for electrodes of electric double layer capacitors is disclosed which comprises an activation step wherein activated carbon is obtained by mixing an alkali metal hydroxide with a carbon raw material for the activated carbon and heating the mixture in an inert gas atmosphere, a deactivation removal step wherein the alkali metal in the activated carbon is deactivated and removed, and a heat treatment step wherein the activated carbon having gone through the deactivation removal step is heated in an inert gas atmosphere at a temperature higher than 400° C. but not higher than the heating temperature in the activation step.

Abstract: A method for forming a capacitor including forming an anode from a valve metal; forming an oxide on the anode to form an anodized anode; dipping the anodized anode into a slurry of conductive polymer; drying the intrinsically conductive polymer; and providing external terminations in electrical contact with the anode and the conductive polymer.

Abstract: There is provided a supercapacitor with a significantly reduced internal resistance. The supercapacitor comprises two electrodes in which each of the two electrodes is comprised of a current collector and an electrode active material adhered to the current collector, a separator positioned between the two electrodes, an electrolyte and a package, wherein the current collector is a metal thin plate having a conductive metal oxide layer thereon and the electrode active material is adhered on a surface of the conductive metal oxide layer. The supercapacitor according to the present invention has a significantly reduced internal resistance and a highly enhanced charge capacitance.

Abstract: An electrolytic capacitor includes a first electrode, a second electrode opposite to the first electrode, a separator sandwiched between the first electrode and the second electrode, a cell accommodating the first electrode, the second electrode and the separator, and an electrolytic solution filled into the inner space of the cell, with the first electrode, the second electrode and the separator immersed into the electrolytic solution. The first electrode and second electrode are in a CNT film structure, and the CNT film structure includes a number of CNT films stacked and packed closely by van der Waals attractive force. Each CNT film includes a number of aligned CNTs, and an angle between the aligned directions of CNTs of any two adjacent CNT film is in an approximate range from 0 to 90 degrees. The electrolytic capacitor is a high-performance capacitor.

Abstract: The present subject matter includes a capacitor stack having at least one cathode layer, and at least one anode layer. Separator paper is shaped and sized to separate the anode and the cathode and resist breakdown. The capacitor stack is compact, and is adapted for use in compact devices. For example, the capacitor stack is adapted for use in cardiac rhythm management devices which are implanted.

Abstract: An organic electrolyte capacitor is provided with a high energy density, a high power and a high capacitance even at ?20°. The organic electrolyte capacitor has a high discharge capacity even at a temperature as low as ?20° C., while having a high voltage and a high energy density. The structure of the organic electrolyte capacitor includes a positive electrode, a negative electrode, and an electrolyte capable of transporting lithium ions. The positive electrode can reversibly support lithium ions and anions, and the negative electrode can reversibly support the lithium ions by using a mesopored carbon material having a pore volume of 0.10 ml/g or more for a pore diameter of 3 nm or larger.

Abstract: A lithium ion capacitor includes a positive electrode including a positive electrode active material capable of reversibly doping either one or both of a lithium ion and an anion, a negative electrode including a negative electrode active material capable of reversibly doping a lithium ion, and a non-protonic organic solvent electrolytic solution of a lithium salt as an electrolytic solution. The lithium ion is doped to either one or both of the negative electrode and positive electrode so that the positive electrode potential after the positive electrode and negative electrode are short-circuited is 2.0 V or less. A surface of the negative electrode is covered with a polymer.

Abstract: The present invention relates to the field of capacitors, and in particular electrochemical double layer capacitors which include separators comprising a porous layer of polymeric nanofibers and an antioxidant.

Abstract: The invention relates to a novel method for preparing electrodes based on activated carbon and carbon nanotubes on a collector. The invention also relates to the electrode obtained thereby and the supercapacitor comprising same.

Abstract: Disclosed is a novel technology, by which carbon nanotubes can be easily worked without degrading the characteristic properties thereof. A gel composition including a carbon nanotube and an ionic liquid is produced by pulverizing, in the presence of the ionic liquid, the carbon nanotube by applying a shearing force thereto, and then, if needed, subjecting the product of the pulverization to centrifugal separation. The gel composition exhibits an excellent workability and can be worked simply by forming a desired shape by subjecting the composition in a fluidized state to application of an external force by such an operation as a printing, coating, extrusion or injection operation, and then removing the ionic liquid with a solvent or an absorbent.

Abstract: An energy storage device comprises a pair of electrodes in contact with an electrolyte and a dielectric separator therebetween. The separator comprises a chelating material capable of binding parasitic to ions with the electrolyte, so to prevent the free circulation of the parasitic ions within the electrolyte. In one embodiment, the chelating material comprises chitosan, which may be provided in fibrous form and which may be included within a non-woven fabric of cellulosic and/or olefinic, or which may be instead coated on the separator or otherwise comprised in the separator. In another embodiment, the chelating material comprises chitosan, and the ion-binding capability of the chitosan is enhanced by chemically binding a chelating agent to the chitosan so to create a multi-dentate ligand that binds with the parasitic ions, particularly multi-valent metal ions, to create coordination compounds. One such chelating agent is ethylendiamine tetraacetic acid (EDTA).

Abstract: An electrolytic capacitor includes a first electrode, a second electrode opposite to the first electrode, a separator sandwiched between the first electrode and the second electrode, a cell accommodating the first electrode, the second electrode and the separator, and an electrolytic solution filled into the inner space of the cell, with the first electrode, the second electrode and the separator immersed into the electrolytic solution. The first electrode and second electrode are in a CNT film structure, wherein the CNT film includes a number of CNTs packed closely, substantially parallel to a surface of the CNT film, and isotropically arranged along a fixed direction or along random directions. The electrolytic capacitor is a high-performance capacitor.

Abstract: An electrolytic capacitor includes a first electrode, a second electrode opposite to the first electrode, a separator sandwiched between the first electrode and the second electrode, a cell accommodating the first electrode, the second electrode and the separator, and an electrolytic solution filled into the inner space of the cell, with the first electrode, the second electrode and the separator immersed into the electrolytic solution. The first electrode and second electrode are in a CNT film structure, wherein the CNT film includes a number of CNTs packed closely, entangled and interconnected with each other, and disorderly arranged. The electrolytic capacitor is a high-performance capacitor.

Abstract: An electrochemical capacitor including a separating layer on a support. The separating layer represents a porous inorganic, electrically non-conducting coating which is provided with particles of compounds of the elements Al, Si, and/or Zr, the particles being bonded to each other and to the support by an inorganic adhesive. The support can represent a porous electrode or a porous and planar substrate that is provided with polymer fibers.

Abstract: A method and implementation for improved performance and sealing of an energy storage device are disclosed.

Abstract: Thermal protection is provided in systems utilizing high-current double-layer capacitors.

Abstract: An electrode for an electrochemical capacitor which comprises a porous carbon substrate having thereon at least a first or innermost layer comprising a first inherently conductive polymer and a second or outermost layer comprising a second inherently conductive polymer. This abstract is neither intended to define the invention disclosed in this specification nor intended to limit the scope of the invention in any way.

Abstract: A composite composition for use in an electrode for electrochemical capacitors, comprising: (a) an electrochemically active material; and (b) exfoliated graphite flakes that are substantially interconnected to form a porous, conductive graphite network comprising pores, wherein at least a portion of the active material resides in a pore of the network. The composite composition is characterized by having liquid accessible pores which provide a surface area greater than about 200 m2/gm, preferably greater than 500 m2/gm, more preferably greater than 1000 m2/gm, and most preferably greater than 1000 m2/gm. Also disclosed is a capacitor that includes at least an electrode comprising such a composite composition. A supercapacitor featuring such a composite electrode exhibits an exceptionally high capacitance value and high electrical conductivity.

Abstract: A method of manufacturing an electrolytic capacitor including the following steps as well as an electrolytic capacitor manufactured by the method are provided. The method includes: a dispersion impregnation step of impregnating, with a dispersion containing electrically conductive solid particles or powder and a solvent, a capacitor element having an anode foil with a dielectric coating film formed thereon and an opposite cathode foil that are wound with a separator interposed therebetween; a dry step of evaporating the solvent after the dispersion impregnation step to form an electrically conductive solid layer on a surface of the dielectric coating film; and an electrolytic solution impregnation step of impregnating a gap in the electrically conductive solid layer with an electrolytic solution. Accordingly, an electrolytic capacitor that can be manufactured more easily that is excellent in voltage proofing property and that has a lower ESR and a lower leakage current is provided.

Abstract: An electrode for an electrolytic capacitor includes a substrate comprising titanium; a carbide layer adjacent the substrate; and a carbonaceous layer adjacent the carbide layer and including means for enhancing the capacitance of the electrode.

Abstract: A carbon material suitable for the preparation of electrodes for electrochemical capacitors is obtained by single-stage carbonization of biopolymers with a large content of heteroatoms. Neither addition of an activating agent during carbonization nor subsequent gas phase activation is necessary. Several biopolymers which are available by extraction from seaweed are suitable precursors. Alternatively, the seaweed containing such biopolymers is carbonized directly.

Abstract: An electric double layer capacitor has a structure with little deformation of a cap or the like due to increase in internal pressure. The electric double layer capacitor includes: a stacked body made of a stacked plurality of thin electrode plates and thin insulating plates each being inserted between each adjacent electrode plate and insulating therebetween; a container storing the stacked body; electrolytic solution filling the container; a flexible cap which covers the container with a space prepared at the end of the container along the laminating length; two inserting through-holes which are formed in the cap and allow positive and negative lead terminals connected to the electrode plates to pass through; and reinforcing parts provided on respective edges of the inserting through-holes.

Abstract: In an electrochemical device comprising a multilayer body having a separator and a pair of electrodes disposed so as to hold the separator therebetween, and an electrolyte infiltrated in the multilayer body; the electrodes contain an active material particle; the separator is made of a nonwoven fabric having an average fiber diameter Df of 0.1 to 1.0 ?m; T?5 ?m and T/Df?20, where T is the thickness of the separator; and Dp<T, where Dp is the average particle size of the active material particle.

Abstract: A coated electrode is provided for use in energy storage devices. The coated electrode comprises a dry particles that are fibrillized.

Abstract: An electrochemical device of this invention has a stacked member, in which a plurality of collectors having polarizable electrode layers formed on the surfaces thereof and a plurality of separators which separate the adjacent polarizable electrode layers are arranged in alternation, and a pair of fixed collecting plates arranged on both sides in the stacking direction of the stacked member. The pair of fixed collecting plates has a depressed portion which exerts pressure on the stacked member and a protruding portion which forms a gap with the stacked member. The protruding portions terminate at the peripheral portions of the fixed collecting plates so that gaps are formed between the stacked member and the fixed collecting plates. These gaps serve as permeation apertures for electrolytic solution.

Abstract: An electrolyte including ?-butyrolactone, a cosolvent and an alcohol is disclosed, which may be used in an electrolytic capacitor with very high operating voltage. Optional additional additives are added to the electrolyte to enhance its conductivity and reliability.

Abstract: This invention provides a non-aqueous capacitor having high voltage resistance, energy density and power density, which comprises an electrode unit composed of collectors, electrodes and separators, and an electrolytic solution, which are contained and sealed in a case, in which each of the collectors, electrodes and separators is made of the materials having a melting point or pyrolysis-initiating temperature (where melting point is not expressed) not lower than 280° C., and the electrode unit is dried after its assembling, at a temperature not lower than the lowest of the melting points or pyrolysis-initiating temperatures of the materials constituting the electrode unit, by 100° C.