Abstract: Disclosed is an electrochemical capacitor comprising a positive electrode exhibiting an irreversible capacity for extending the potential range during a charge/discharge cycle, a negative electrode composed of a material which is capable of reversibly adsorbing/desorbing lithium ions, and an electrolyte solution composed of an organic solvent containing lithium ions.

Abstract: This invention discloses a load system for loading an Mcap energy storage module to an apparatus, comprising: a storage unit and a load unit. The storage unit further comprises: a first housing part and a seal for sealing the first housing part. The first housing part includes four side walls, a bottom wall and a first opening. A plurality of Mcap cell are disposed in the first housing part through the first opening. A first electrode formed in a side wall. A second electrode formed in another side wall facing the first side wall. The load unit comprises a second housing part and a seal for sealing the second housing part. The storage unit is loaded into the second housing part through the second opening.

Abstract: An electrical energy storage device includes a first electrode; a second electrode; a separator; and an electrolyte; where the separator is an electronic insulator; the separator is positioned between the first and second electrodes; the separator includes a first surface proximal to the first electrode and a second surface proximal to the second electrode; the separator is configured to support an electric double layer at the first surface, the second surface, or at both the first surface and the second surface; and the device is an electrical energy storage device.

Abstract: The present invention provides electrolytes for use in electronic devices which contain imidazolium salts in combination with high boiling aprotic solvents having lower flammability and lower toxicity than acetonitrile electrolytes.

Abstract: A coated electrode includes a current collector of an etched aluminum foil having a thickness of 20 to 45 ?m, an apparent density of 2.00 to 2.54 g/cm3, an air permeability of 20 to 120 s and a number of through-holes penetrating therethrough from the front surface to the back surface, and an electrode layer formed by applying a coating material including, as an active material, a substance capable of reversibly carrying lithium ions and anions on to the current collector. The coated electrode is industrially producible, high in conductivity and strength, and excellent in evenness. A capacitor, for example, can make use of the electrode.

Abstract: The present invention discloses an improved electrode for a supercapacitor and a method of preparation thereof. The inventive electrode comprises a collector, a carbon substrate disposed on the collector comprising ultrafine carbon fibers having a specific surface area of at least 200 m2/g (BET) and a d002 value of 0.36 nm or less, and a metal oxide thin layer formed on the carbon substrate. The electrode of the subject invention retains a high specific capacitance during high-speed charging and discharging cycles.

Abstract: A nanoporous insulating oxide composite electrode and ultracapacitor device, method of manufacture and method of use thereof. The composite electrode being constructed from a conductive backing electrode and an composite layer. Preferably, the ultracapacitor device is configured in a stacked, coiled or button cell configurations and includes composite electrodes. The composite layer being substantially free of mixed oxidation states and nanoporous and having a median pore diameter of 0.5-500 nanometers and average surface area of 300-600 m2/g. The composite layer made from a stable sol-gel suspension containing particles of the insulating oxide, the median primary particle diameter being 1-50 nanometers. Preferably, the insulating oxide is Al2O3, MgAl2O4, SiO2 or TiO2. Preferably, the backing electrode is carbon paper sputter-coated with a film of Au.

Abstract: The disclosure relates to asymmetric supercapacitors containing: a positive electrode comprising a current collector and a first active material selected from a layered double hydroxide of formula [M2+1?xMx3+(OH)2]An?x/n·mH2O where M2+ is at least one divalent metal, M3+ is at least one trivalent metal and A is an anion of charge n?, where x is greater than zero and less than 1, n is 1, 2, 3 or 4 and m is 0 to 10; LiCoO2; LiCoxNiyO2 where x and y are greater than zero and less than 1; LiCoxNiyMn(1?x?y)O2 where x and y are greater than zero and less than 1; CoSx where x is from 1 to 1.5; MoS; Zn; activated carbon and graphite; a negative electrode containing a material selected from a carbonaceous active material, MoO3 and Li1xMoO6?x/2; an aqueous electrolyte solution or a non-aqueous ionic conducting electrolyte solution containing a salt and a salt and a non-aqueous solution; and a separator plate. Alternatively, the electrolyte can be a solid electrolyte.

Abstract: A supercapacitor and a manufacturing method thereof are disclosed. With manufacturing method of Supercapacitor including: arranging a plurality of filters to be spaced at a designated interval apart, forming a first plating layer connecting one end of the filter, forming a second plating layer lengthened along the filter from the first plating layer, polymerizing to form a conductive polymer layer between the second plating layer, and removing the filter, capacitance (C), power (kw) and energy (E) can be increased as the space for absorbing electrons is widened, by making the surface area of an electrode wider than the a general film.

Abstract: A capacitor includes a plurality of electrode substrates, with each of the plurality of electrode substrates having a coated portion and an uncoated portion. The coated portion is coated with a coating material that includes a high surface area activated carbon material, a water soluble binder selected from the group consisting of: poly vinyl alcohol, poly acrylic acid, polymethacrylic acid, polyethylene oxide, polyacrylamide, poly-N-isopropylearylamide, poly-N,N-dimethylacrylamide, polyethyleneimine, polyoxyethylene, polyvinylsulfonic acid, poly(2-methoxyethoxyethoxyethylene), butadiene-acrylonitrile, and combinations thereof, and a water soluble thickener. A separator is inserted between adjacent substrates of the plurality of electrode substrates. The capacitor further includes an electrolyte. A method of manufacturing the capacitor is also provided.

Abstract: The present invention is an electrochemical double layer capacitor (EDLC) series stack formed into a single electrolyte cell structure. The concatenated multiple electrode assembly stack has electrode assemblies electrically connected in series. The electrode assemblies have a double-sided activated carbon electrode formed on a current collector. Power tabs are connected to the end electrode assemblies. An electrolyte is also provided. A poly bag contains the electrolyte and the electrode assemblies. The electrode assemblies form a double-sided activated-carbon electrode on a current collector. The EDLC stack has a number of segments and mass free zones separating them. The segments are folded so that mass free zones are disposed at the apex of each fold.

Abstract: A double layer capacitor (DLC) containing at least one double layer capacitor cell is provided. Each double layer capacitor cell contains two current collectors, each containing a metallized carrier film with upper and lower planar surfaces, two thin electrode layers in direct contact with the lower and upper planar surfaces of the metallized carrier films of the first and second current collectors, and a polymer electrolyte layer in direct contact with the first and the second thin electrode layers. The polymer electrolyte is applied as a liquid which impregnates and encases the electrode layers and then solidified to form the electrolyte layer. The resulting DLC is preferably no thicker than about 20 microns, and may be as thin as 5 microns. Methods of producing a DLC and for forming a cross-linked electrolyte are also provided.

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: 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: An inexpensive and reliable dry process based capacitor and method for making a self-supporting dry electrode film for use therein is disclosed. Also disclosed is an exemplary process for manufacturing an electrode for use in an energy storage device product, the process comprising: supplying dry carbon particles; supplying dry binder; dry mixing the dry carbon particles and dry binder; and dry fibrillizing the dry binder to create a matrix within which to support the dry carbon particles as dry material.

Abstract: A composite suitable as a charge-storing material for electrochemical capacitors contains carbon nanotubes and a carbonaceous materiel. The carbonaceous material is the carbonization residue of a biopolymer or seaweed rich in heteroatoms. Wherein the carbonization residue of the biopolymer or seaweed is electrically conductive and has a heteroatom content as detected by XPS of at least 6%.

Abstract: An electrochemical device, such as a battery or power source, provides improved performance under stringent or extreme conditions. Such an electrochemical device for use in high temperature conditions may include at least a cathode, a lithium-based anode, a separator, and an ionic liquid electrolyte. This device also may include a current collector and housing that are electrochemically inert with respect to other components of the device. This electrochemical device may operate at temperatures ranging from 0 to 180, 200, 220, 240, and 260° C.

Abstract: This disclosure relates to an electrolyte for an aluminum electrolytic capacitor. An electrolyte according to one embodiment includes a protic fluid and a high dielectric co-solvent or a dipolar aprotic. According to various embodiments, the electrolyte is pH buffered to less than approximately 6.8 pH. The protic fluid includes ethylene glycol and the high dielectric co-solvent includes N-methylformamide, in various embodiments. The disclosure further relates to methods for manufacturing an electrolyte, and capacitors and implantable devices including a supporting electrolyte selected for optimal cation size and charge and anion solubility.

Abstract: An electrode of an energy storage device with less deterioration by charge and discharge can be manufactured. In addition, an energy storage device which has large capacity and high endurance can be manufactured. A manufacturing method of an electrode of an energy storage device is provided in which a high-wettability regions and a low-wettability region are formed at a surface of a current collector, a composition containing silicon, germanium, or tin is discharged to the high-wettability regions and then baked to form separate active materials over a surface of the current collector. Thus, an electrode of an energy storage device with less deterioration due to charge and discharge can be manufactured.

Abstract: A bus-bar for assembling a capacitor device is disclosed, which is capable of improving the environment of a soldering operation for the bus-bar being soldered to a capacitor device, reducing the inferior rate of the capacitor device while improving the quality of the capacitor device, and reducing the weight of the capacitor module, in soldering the bus-bar to capacitor devices. The lead frame attached to polar plates by soldering is formed thinner than the other parts of the bus-bar, and opening parts having an oval or polygonal shape are formed on a surface of the bus-bar so that two adjoining capacitor devices can be exposed. The lead frame is formed in the opening in order for soldering with the polar plates of the capacitor device.

Abstract: A lithium ion capacitor includes a positive electrode made of a material capable of reversibly doping and dedoping lithium ions and/or anions; a negative electrode made of a material capable of reversibly doping and dedoping lithium ions; and an electrolytic solution made of an aprotonic organic solvent electrolyte solution of a lithium salt. When the negative electrode and/or positive electrode and a lithium ion supply source are electrochemically brought into contact, lithium ions are doped in a negative electrode and/or positive electrode. A positive electrode potential after the positive electrode and negative electrode are short-circuited is 2.0 V (vs. Li/Li+) or less. The positive electrode and/or negative electrode has a current collector made of a metal foil that has many holes that penetrate through both sides and have an average diameter of inscribed circles of the through-holes of 100 ?m or less.

Abstract: A method for reducing pressure build-up in an electrochemical cell is provided comprising: providing an anhydrous nonaqueous electrolyte solution comprising at least one quaternary ammonium salt and at least one anhydrous nonaqueous solvent; contacting the electrolyte solution with at least one acid scavenger; and loading the nonaqueous electrolyte solution into the electrochemical cell. Also, provided is an electric double-layer capacitor (supercapacitor) comprising a free acid scavenger.

Abstract: Provided is an electrolyte containing tetrafluoroaluminate ions, which is advantageous in that the electrolyte can be prevented from leaking from both the cathode and the anode in an electrolytic capacitor.

Abstract: This method enables the use of nanowire or nano-textured forms of Polyaniline and other conductive polymers in energy storage components. The delicate nature of these very high surface area materials are preserved during the continuous electrochemical synthesis, drying, solvent application and physical assembly. The invention also relates to a negative electrode that is comprised of etched, lithiated aluminum that is safer and lighter weight than conventional carbon based lithium-ion negative electrodes. The invention provides for improved methods for making negative and positive electrodes and for energy storage devices containing them. The invention provides sufficient stability in organic solvent and electrolyte solutions, where the prior art processes commonly fail. The invention further provides stability during repetitive charge and discharge. The invention also provides for novel microstructure protecting support membranes to be used in an energy storage device.

Abstract: A capacitor for use in a hybrid vehicle and the like has a structure contrived to achieve reduction in size, increase in capacitance and decrease in resistance. An element has a pair of positive and negative electrodes, each comprising a collector made of a metallic foil having a carbon-containing electrode layer formed thereon, the electrodes rolled up with a separator interposed therebetween to form a pair of electrode terminations at opposite sides of the element. A dimension of one of the electrode terminations is set shorter than that of the other electrode termination. This structure achieves an increase in capacitance and decrease in resistance since it can increase an effective area of electrode surfaces under a restricted condition of keeping the same height of the element as it is placed inside a casing of given dimensions.

Abstract: An aluminum electrolytic capacitor having an excellent short-circuit resistance, high capacitance, long life, and low equivalent series resistance (ESR) is provided. For this purpose, the aluminum electrolytic capacitor includes a capacitor element having a positive electrode foil, a first separator, a negative electrode foil, and a second separator, which are sequentially laminated one on another and wound together. After the capacitor element is impregnated with a driving electrolyte solution and housed in a metallic case, an open end of the metallic case is sealed with a sealing material. A ratio of B/A, i.e. a ratio of total thickness B of the first and second separators after winding with respect to total thickness A of the first and second separators before winding, is set in the range from 0.5 to 0.8.

Abstract: In a method of manufacturing a porous coke suitable as a charge-storing material in electrochemical capacitors, one manufactures or provides a non-calcined isotropic coke with spherical or onion-shaped morphology and low graphitizability as a starting material. The starting material is comingled with a caustic alkali to obtain a homogenous mixture. The homogenous mixture is heat treated at a temperature in a range between 650 and 950° C. to obtain the porous coke. The porous coke is washed and neutralized.

Abstract: A composite electrode is created by forming a thin conformal coating of mixed metal oxides on a highly porous carbon structure. The highly porous carbon structure performs a role in the synthesis of the mixed oxide coating and in providing a three-dimensional, electronically conductive substrate supporting the thin coating of mixed metal oxides. The metal oxide mixture shall include two or more metal oxides. The composite electrode, a process for producing said composite electrode, an electrochemical capacitor and an electrochemical secondary (rechargeable) battery using said composite electrode are disclosed.

Abstract: An electrochemical device having an operational voltage up to 4.5 V in combination with a high concentration of an electrolyte salt consisting of a tetrafluoroborate salt and a eutectic of two solvents in which ethylene carbonate is one and an improved carbon electrode a preferred electrochemical device is a capacitor.

Abstract: Disclosed is an all-solid-state electric double layer capacitor comprising a solid electrolyte and a current collector, wherein the solid electrolyte is an inorganic solid electrolyte. Such a capacitor has high capacity and is free from any fear of leakage of an electrolytic solution, and also ensures high heat resistance and enables a low process cost.

Abstract: A method for manufacturing an electrode of a supercapacitor is provided. First, a poly(acrylonitrile) (PAN) fabric is provided. The PAN fabric includes a plurality of PAN fibers each having a diameter of about 50-500 nm. Then, the PAN fabric undergoes a heat treatment so that the PAN fibers are carbonized to form a carbon fiber textile. The carbon fiber fabric includes a plurality of carbon fibers each having a diameter of about 50-500 nm. The surface of each carbon fiber is nano-porous having a plurality of nano pores of about 1-50 nm in diameter. The total surface area of the nano pores account for about 85-95% of the total surface area of the carbon fibers. The carbon fiber fabric is then cut to acquire the electrode of the supercapacitor.

Abstract: A capacitor for an implantable medical device is presented. The capacitor includes an anode, a cathode, a separator therebetween, and an electrolyte over the anode, cathode, and separator. The electrolyte includes ingredients comprising acetic acid, ammonium acetate, phosphoric acid, and tetaethylene glycol dimethyl ether. The capacitor has an operating voltage ninety percent or greater of its formation voltage.

Abstract: A cell for use in an electrolysis unit includes a back wall, a side wall extending upwardly from and around a periphery of the back wall to define an inner region of the cell, an electrode disposed on the back wall within the inner region to divide at least a portion of the inner region into first and second regions is disclosed.

Abstract: A flexible super capacitor including a pair of flexible electrodes and a separator film is disclosed. Each flexible electrode includes a carbon fiber layer and a collector formed on a surface of the carbon fiber layer. The pair of flexible electrodes has two outer surfaces, and the collector layers are formed on the outer surfaces of the pair of the flexible electrodes. The separator film is disposed between the flexible electrodes. The collector layer would be formed on the carbon fiber layer with surface metalizing the carbon fiber layer. A method for fabricating the flexible electrode of the flexible super capacitor is also disclosed.

Abstract: Carbon electrodes for a capacitor having conditioned carbon elements in combination with a high concentration of an electrolyte tetrafluoroborate salt and a non-aqueous aprotic solvent to provide an operational voltage up to 4.5V and capacitors used with the carbon electrodes.

Abstract: Films of active electrode material, such as films made from carbon and fibrillized polymer, are attached to a porous separator. Outer surfaces of the films (i.e., surfaces opposite those adjoining the separator) are then covered with current collectors. The 5 resulting stack is usable in fabrication of electrical energy storage devices. The stack can be shaped as needed, connected to terminals, and immersed in an electrolytic solution to provide a double layer capacitor.

Abstract: A coin-type electrochemical element enables the external lead terminal portions to be accurately and reliably attached to a first lid portion and to a second lid portion of the coin-type electrochemical element, and a method of its production. A coin-type electric double layer capacitor includes a first lid portion and a second lid portion. External lead terminal portions, each having a nearly triangular shape, are separately connected to the outer surfaces of the lid portions. Upon providing the external lead terminal portions having the triangular shape, a welded portion is allowed to have an increased area enabling the coin-type electrochemical element of even a small size to be accurately and reliably welded and making it possible to provide the coin-type electrochemical element having excellent reliability.

Abstract: An energy storage cell pack cradle assembly for holding multiple rows of energy storage cells oriented along a dominant axis of vibration includes a first cradle member including a plurality of energy storage cell body supporting structures including respective holes; a second cradle member including a plurality of energy storage cell body supporting structures including respective holes; and one or more fasteners connecting the first cradle member and the second cradle member together. The energy storage cell body supporting structures are configured to structurally support the energy storage cells, with the energy storage cells oriented along a dominant axis of vibration, by energy storage cell bodies of the energy storage cells with respective electrically conductive terminals extending through the respective holes without structural support of the electrically conductive terminals by the cradle members.

Abstract: A capacitor provides a plurality of selectable capacitance values, by selective connection of six capacitor sections of a capacitive element each having a capacitance value. The capacitor sections are provided in a plurality of wound cylindrical capacitive elements. Two vertically stacked wound cylindrical capacitance elements may each provide three capacitor sections. There may be six separately wound cylindrical capacitive elements each providing a capacitor section. The capacitor sections have a common element terminal. A pressure interrupter cover assembly is sealingly secured to the open end of case for the elements and has a deformable cover with a centrally mounted common cover terminal and a plurality of section cover terminals mounted at spaced apart locations. A conductor frangibly connects the common element terminal of the capacitor section to the common cover terminal and conductors respectively frangibly connect the capacitor section terminals to the section cover terminals.

Abstract: An electric energy storage component having coil windings and at least one connector. A plate of the connector is in contact with the coil windings. The plate of the connector has a surface which is provided with a terminal wherein the shape thereof is essentially that of a revolution. The plate also forms a series of bosses extending in a raised manner along a surface of the plate opposite to that containing the terminal. The terminal has at least one inner recess and at least one boss which penetrates into the recess.

Abstract: Systems and apparatus are provided for capacitor segments for use in a vehicle. A capacitor segment comprises an inner conductor configured to receive a first potential and having a generally L-shaped longitudinal cross-section. An outer conductor is configured to receive a second potential, and is electrically insulated from the inner conductor. The outer conductor comprises a first section having a generally L-shaped longitudinal cross-section aligned with the inner conductor, and a second section coupled to the first section and having a generally L-shaped lateral cross-section. The second section and the inner conductor define an inner region. A capacitor is located in the inner region and coupled to the inner conductor and the second section. The capacitor segment is configured such that current flows through the capacitor in a first direction, and current flows through the second section in a second direction that generally opposes the first direction.

Abstract: The invention relates to an electrode for energy storage systems, the production method thereof, and an energy storage system comprising said electrode. More specifically, the invention relates to films of carbonaceous active material based on activated carbon with a determined porosity, purity and particle size distribution and a polymer binder, whereby the electrodes comprise one such coating film on a current collector and the supercapacitors comprise at least one of these electrodes. The invention also relates to the method of preparing the aforementioned films, electrodes and supercapacitors.

Abstract: The present invention includes a conductive plastic that is used as an electrode substrate in bipolar batteries. This conductive plastic has shown resistances as low as 1 ohm cm2. Using a dry process for active material electrode construction, the conductive plastic allows for lamination of the dry oxide and carbons for cathodes and anodes necessary in the initial assembly of the cell. The bipolar electrodes are then able to be sealed. With this process, the product can then be assembled into a multi cell battery. The cell uses an organosilane or organosiloxane solvent electrolyte to prevent leakage.

Abstract: An ultracapacitor or hybrid capacitor includes an electrically non-conductive rigid or semi-rigid porous honeycomb separator structure having cells extending along a common direction and supporting current collector structure(s) thereon. The current collector structure may be porous and extend continuously on all inner surfaces of a cell of the honeycomb structure, or may extend along the common direction on separate portions of the inner surfaces of a cell. The material may desirably be an oxide or non-oxide ceramic, such as cordierite, silicon nitride, aluminum titanate, alumina, zircon, glass, or glass-ceramic.

Abstract: A supercapacitor having a bipolar membrane separator having a first side facing the negative electrode of the supercapacitor and having a plurality of cations and a second side facing the positive electrode and having a plurality of anions.

Abstract: An electric double layer capacitor includes first and second collectors, first and second polarizable electrode layers provided on the first and second collectors, respectively, a separator having an insulating property provided between the first and second polarizable electrode layers, and an electrolytic solution impregnated in the separator and the first and second polarizable electrode layers. A lower electric potential is to be applied to the second collector than to the first collector. The electrolytic solution contains anion including fluorine as electrolyte. The separator includes a separation layer facing the second polarizable electrode layer, and an inhibition layer facing the first polarizable electrode layer. The separation layer contains cellulose. The inhibition layer is made of material different from that of the separation layer. The inhibition layer prevents cellulose from decomposing.

Abstract: A wound electric double-layer capacitor suppresses electrochemical reaction on polarized electrode layers, reduces characteristic degradation, and has high reliability. The capacitor has a capacitor element formed by winding positive and negative electrodes with a separator interposed between them, a metal case for storing the capacitor element and an electrolyte for driving, and a sealing member for sealing an opening of the metal case. In the positive and negative electrodes, positive and negative electrode lead wires are coupled to exposed parts of current collectors having polarized electrode layers on their both surfaces, respectively. The negative electrode is wound at least one extra turn from the winding end of the positive electrode of the capacitor element, and hence a part where the polarized electrode layers formed in the negative electrode face each other through the separator is formed on the outermost periphery of the capacitor element.

Abstract: An electrolyte solution used for an electrochemical device including an electrolyte and at least one of fluoro-containing compounds represented by the general formula (1): where, R1, R2 each represent a hydrogen atom, a fluorine atom, or an alkyl group of 1 to 10 carbon atoms in which R1 and R2 may be identical or different with each other, or a cyclic structure may be formed by providing bonding between the carbon atoms contained in R1 and R2.

Abstract: An energy storage cell pack cradle assembly for holding multiple rows of energy storage cells oriented along a dominant axis of vibration includes a first cradle member including a plurality of energy storage cell body supporting structures including respective holes; a second cradle member including a plurality of energy storage cell body supporting structures including respective holes; and one or more fasteners connecting the first cradle member and the second cradle member together. The energy storage cell body supporting structures are configured to structurally support the energy storage cells, with the energy storage cells oriented along a dominant axis of vibration, by energy storage cell bodies of the energy storage cells with respective electrically conductive terminals extending through the respective holes without structural support of the electrically conductive terminals by the cradle members.

Abstract: An electric double layer capacitor (EDLC) in a coin or button cell configuration having low equivalent series resistance (ESR). The capacitor comprises mesh or other porous metal that is attached via conducting adhesive to one or both the current collectors. The mesh is embedded into the surface of the adjacent electrode, thereby reducing the interfacial resistance between the electrode and the current collector, thus reducing the ESR of the capacitor.