Abstract: Provided is a positive electrode precursor having a positive electrode active material layer, wherein the mass proportion A1 of a carbon material in the positive electrode active material layer accounts for 15-65 mass %, the mass proportion A2 of a lithium transition metal oxide in the positive electrode active material layer accounts for 5-35 mass %, the mass proportion A3 of an alkali metal compound in the positive electrode active material layer accounts for 10-50 mass %, A2/A1 is 0.10-2.00, A1/A3 is 0.50-3.00, and the positive electrode active material layer has a peel strength of 0.02-3.00 N/cm.

Abstract: The present invention if related to an improved electrolytic capacitor and a method of making the improved electrolytic capacitor. The electrolytic capacitor comprises an anode comprising a dielectric layer on the anode. A first mordant layer is on the dielectric wherein the first mordant layer comprises a mordant compound of Formula A: wherein: R1 and R2 is independently selected from H; cation, linear alkyl, cyclic alkyl or substituted alkyl of 1 to 10 carbons; R3 is selected from —CR4R5R6 wherein R4 represents a hydrogen, an alkyl of 1-20 carbons or an aryl of 6-20 carbons; R4 and R5 can be taken together to represent a cyclic alkyl or substituted cyclic alkyl or (—CR6OP(O)OR1OR2)n; R5 represents an alkyl of 1-20 carbons or an aryl of 6-20 carbons; R4 and R5 can be taken together to represent a cyclic alkyl or substituted cyclic alkyl or (—CR6OP(O)OR1OR2)n; R6 represents a hydrogen, an alkyl of 1-20 carbons or an aryl of 6-20 carbons; and n is an integer from 1 to 20; and a crosslinker.

Abstract: A carbon cloth/gallium oxynitride has a chemical formula of GaOxNy, where x=0.1-0.3 and y=0.7-0.9; and has a N/O molar ratio of 2.3 to 9. The carbon cloth/gallium oxynitride is a composite formed by loading gallium oxynitride nanoparticles on carbon cloth fibers, wherein the gallium oxynitride nanoparticles have a size range of 10 to 70 nm, and the carbon cloth/gallium oxynitride has a discharge specific capacitance of 30 to 865 mF cm?2 at current densities ranging from 0.5 to 100 mA cm?2. The working electrode is made from the carbon cloth/gallium oxynitride; and the supercapacitor is composed of the carbon cloth/gallium oxynitride working electrodes, a separator, an electrolyte, and an outer package.

Abstract: A positive electrode includes at least a positive electrode current collector and a positive electrode active material layer. The positive electrode current collector includes an aluminum foil and an aluminum hydrated oxide film. The aluminum hydrated oxide film covers a surface of the aluminum foil. The positive electrode active material layer is formed on a surface of the aluminum hydrated oxide film. The aluminum hydrated oxide film has a thickness not smaller than 50 nm and not greater than 1000 nm. The aluminum hydrated oxide film contains at least one selected from the group consisting of phosphorus, fluorine, and sulfur.

Abstract: A conductive polymer composition comprising: (a) a conductive polymer; (b) a solvent; and (c) an acid or a salt.

Abstract: A capacitor and a method of processing an anode metal foil are presented. The method includes electrochemically etching the metal foil to form a plurality of tunnels. Next, the etched metal foil is disposed within a widening solution to widen the plurality of tunnels. Exposed surfaces of the etched metal foil are then oxidized. The method includes removing a section of the etched metal foil, where the section of the etched metal foil includes exposed metal along an edge. The section of the etched metal foil is placed into a bath comprising water to form a hydration layer over the exposed metal on the section of the etched metal foil. The method also includes assembling the section of the etched metal foil having the hydration layer as an anode within a capacitor.

Abstract: The present invention provides an electrode material comprising at least one of metal compound powder and carbon powder, the powder having an average particle size of 50 ?m or less and an activation energy E? of 0.05 eV or less. Further, the powder preferably has hopping conduction characteristics at room temperature of 25° C. Furthermore, the powder preferably has an amount of oxygen defects of 1×1018 cm?3 or more. Still further, the powder preferably has a carrier density of 1×1018 cm?3 or more. Due to above structure, there can be provided an electrode material having a high storage capacity and a high charge/discharge efficiency.

Abstract: A method for producing an electrolytic capacitor according to the present disclosure is characterized by including a first step of preparing a capacitor element that includes an anode body on which a dielectric layer is formed; a second step of impregnating the capacitor element with a first treatment solution containing a first solvent and a conductive polymer; a third step of impregnating, after the second step, the capacitor element with a second treatment solution containing a second solvent; and a fourth step of impregnating, after the third step, the capacitor element with an electrolyte solution containing a third solvent, both the second solvent and the third solvent being a protic solvent.

Abstract: A method for pre-doping a lithium ion capacitor, including: compressing a lithium ion capacitor of the formula: C/S/A/S/C/S/A/S/C, where: /A/ is an anode coated on both sides with an anode carbon layer, and each anode carbon layer is further coated with lithium composite powder (LCP) layer; C/ is a cathode coated on one side with a layer of an cathode carbon mixture; and S is a separator; and a non-aqueous electrolyte; and conditioning the resulting compressed lithium ion capacitor, for example, at a rate of from C/20 to 4C, and the conditioning redistributes the impregnated lithium as lithium ions in the anode carbon structure. Also disclosed is an carbon coated anode having lithium composite powder (LCP) layer compressed on the carbon coated anode.

Abstract: A capacitor electrode includes a collector, and an electrode layer disposed in contact with the collector and capable of inserting and releasing cations. The electrode layer includes first carbon material particles capable of inserting and releasing cations and second carbon material particles capable of inserting and releasing cations. The average particle diameter of primary particles of the second carbon material particles is smaller than the average particle diameter of primary particles of the first carbon material particles. In the electrode layer, the content amount of the second carbon material particles is smaller than the content amount of the first carbon material particles.

Abstract: An energy storage system includes, in an exemplary embodiment, a first current collector having a first surface and a second surface, a first electrode including a plurality of carbon nanotubes on the second surface of the first current collector. The plurality of carbon nanotubes include a polydisulfide applied onto a surface of the plurality of nanotubes. The energy storage system also includes an ionically conductive separator having a first surface and a second surface, with first surface of the ionically conductive separator positioned on the first electrode, a second current collector having a first surface and a second surface, and a second electrode including a plurality of carbon nanotubes positioned between the first surface of the second current collector and the second surface of the ionically conductive separator.

Abstract: An electrochemical capacitor includes electrolytic solution, a capacitor element, and a housing. The electrolytic solution contains cations, anions, solvent formed of materials other than lactones, and a lactone component. The capacitor element includes a negative electrode, a positive electrode, and a separator. The negative electrode includes an electrode layer capable of storing the cations, and the positive electrode includes a polarizable electrode layer and confronts the negative electrode. The separator is disposed between the negative and positive electrodes, and they are layered or wound together. The capacitor element is impregnated with the electrolytic solution. The housing accommodates the capacitor element and the electrolytic solution that contains the lactone component in a quantity ranging from 0.001 wt % to 5 wt % (inclusive) relative to the solvent.

Abstract: A hydrophobic film is formed on the electrode foil surface by adding a straight-chain saturated dicarboxylic acid represented by the general formula: HOOC(CH2)nCOOH (wherein n indicates an integer from 9 to 11) to the electrolytic solution for medium/high-voltage electrolytic capacitor. Addition of a large amount of water to the electrolytic solution is allowed since this hydrophobic film suppresses the hydration reaction between the electrode foil and water. Further, it is possible to retain good lifespan property of the electrolytic capacitor in a medium/high-voltage electrolytic solution by having low specific resistance property and by suppressing the hydration decomposition of the electrode foil, wherein the electrolytic solution is azelaic acid, sebacic acid, 1-methyl-azelaic acid, 1,6-decanedicarboxylic acid, or a salt thereof dissolved in a solvent having ethylene glycol as the main component.

Abstract: A wet electrolytic capacitor is provided. The capacitor contains an anode comprising an anodically oxidized pellet formed from a pressed and sintered powder, a cathode that contains a metal substrate coated with a conductive polymer, and a working electrolyte in communication with the anode and the cathode. The working electrolyte is in the form of a gel and comprises an ammonium salt of an organic acid, inorganic oxide particles, an acid, and a solvent system that comprises water. The working electrolyte has a pH value of from about 5.0 to about 8.0.

Abstract: A method of producing an electric storage device includes a fastening that includes fastening a laminate that includes a lithium foil and a metal foil to at least one of a first separator and a second separator using a bonding member, and a winding that includes winding the first separator, the second separator, the laminate, a cathode, and an anode to obtain a wound element, one of the first separator and the second separator being disposed between the cathode and the anode.

Abstract: A method of storing charge comprising the steps of providing a capacitor comprising an anode, a cathode, and an electrolyte, wherein the electrolyte comprises a nonaqueous liquid of sufficient dielectric constant to dissociate salts soluble in the nonaqueous liquid, a composite comprising a prefabricated porous carbon electrode structure or a carbon foam substrate that is a prefabricated paper structure and a coating deposited by infiltrating the structure with iron oxide via self-limiting electroless deposition on the surface.

Abstract: The invention relates to an electrolyte for a lithium-based energy storage device comprising at least one lithium salt, a solvent and at least one compound of general formula (1), and to their use in lithium-based energy storage devices.

Abstract: There is provided an ionic compound having attached thereto a silyloxy group. There is also provided methods of making this ionic compound as well as electrolytes, electrochemical cells and capacitors comprising this ionic compound.

Abstract: An aluminum electrolytic capacitor including an anode electrode, and a method for producing the anode electrode. The method includes providing an aluminum electrolyte including an ionic liquid and an aluminum salt, galvanically deposing an aluminum on an aluminum foil formed from the aluminum electrolyte, and anodically oxidizing a surface of the aluminum foil. The ionic liquid includes a pyrrolidinium cation and a halogenide. The aluminum electrolyte includes 50-70 mol. % of the aluminum salt based on a total substance amount of the ionic liquid and the aluminum salt. The galvanic deposition includes and is based on a deposition temperature ranging from 20° C. to 100° C., a current density ranging from 1 to 100 mA/cm2, an applied potential ranging from ?0.1V to ?1.0 V based on a potential of an aluminum reference electrode, and a deposition rate ranging from 1 to 50 ?m/h.

Abstract: The present invention provides a highly conductive, highly voltage-resistant, and stable liquid electrolyte solution for capacitors which does not coagulate and is free from precipitation of salts in a wide temperature range, particularly at low temperatures, shows excellent electrical characteristics, and has excellent long-term reliability. The present invention also provides an electric double-layer capacitor and a lithium ion capacitor produced using the electrolyte solution for capacitors. The present invention relates to an electrolyte solution for capacitors including: an organic solvent; and a quaternary ammonium salt or lithium salt dissolved in the organic solvent, the organic solvent containing acetonitrile and a chain alkyl sulfonic compound represented by the formula (1): wherein R1 and R2, which may be the same as or different from each other, each independently represent a straight or branched chain C1-C4 alkyl group.

Abstract: Disclosed is a cathode active material having a core-shell structure. The core-shell cathode active material includes a core including a lithium transition metal oxide with excellent electrochemical properties and a shell formed by coating the surface of the core with a transition metal oxide. The formation of the shell by coating a transition metal oxide on the surface of the core comprising a lithium transition metal oxide prevents the structure of the lithium transition metal oxide from collapsing and inhibits the dissolution of manganese ions, enabling the fabrication of a hybrid capacitor with improved energy density and rate characteristics. Also disclosed is a method for producing the cathode active material.

Abstract: The present invention relates to electrolyte systems and electrochemical cells comprising conductive salts having different anionic and/or cationic radii.

Abstract: Disclosed are an aluminum electrolytic capacitor having low impedance properties and a long service life, and an electrolytic solution which enables to give such capacitor. The electrolytic solution contains a solvent containing water, a phosphorus oxoacid ion-generating compound which can generate a phosphorus oxoacid ion in an aqueous solution, and a chelating agent which can coordinate with aluminum to form an aqueous aluminum chelate complex. The electrolytic solution further contains a compound selected from the group consisting of azelaic acid and an azelaic acid salt, and a compound selected from the group consisting of formic acid, a formic acid salt, adipic acid, an adipic acid salt, glutaric acid and a glutaric acid salt. The content of azelaic acid and/or the azelaic acid salt is at least 0.03 moles per kg of the solvent.

Abstract: The present invention provides a power system for a vehicle. The power system comprising a supercapacitor-like electronic battery that is connected to a battery charger. The battery charger provides energy to the supercapacitor-like electronic battery. A heater is operatively connected to the supercapacitor-like electronic battery to provide energy to heat the supercapacitor-like electronic battery thereby lowering the internal impedance of the supercapacitor-like electronic battery. A charging apparatus is operatively connected to the battery charger. A motor is operatively connected to the vehicle and the supercapacitor-like electronic battery. A feedback loop controller is operatively connected to the heater, the supercapacitor-like electronic battery and the motor.

Abstract: Double-layer capacitors capable of operating at extremely low temperatures (e.g., as low as ?80° C.) are disclosed. Electrolyte solutions combining a base solvent (e.g., acetonitrile) and a cosolvent are employed to lower the melting point of the base electrolyte. Example cosolvents include methyl formate, ethyl acetate, methyl acetate, propionitrile, butyronitrile, and 1,3-dioxolane. A quaternary ammonium salt including at least one of triethylmethylammonium tetrafluoroborate (TEMATFB) and spiro-(1,1?)-bipyrrolidium tetrafluoroborate (SBPBF4), is used in an optimized concentration (e.g., 0.10 M to 0.75 M), dissolved into the electrolyte solution. Conventional device form factors and structural elements (e.g., porous carbon electrodes and a polyethylene separator) may be employed.

Abstract: One object is to provide a power storage device including an electrolyte using a room-temperature ionic liquid which includes a univalent anion and a cyclic quaternary ammonium cation having excellent reduction resistance. Another object is to provide a high-performance power storage device. A room-temperature ionic liquid which includes a cyclic quaternary ammonium cation represented by a general formula (G1) below is used for an electrolyte of a power storage device. In the general formula (G1), one or two of R1 to R5 are any of an alkyl group having 1 to 20 carbon atoms, a methoxy group, a methoxymethyl group, and a methoxyethyl group. The other three or four of R1 to R5 are hydrogen atoms. A? is a univalent imide anion, a univalent methide anion, a perfluoroalkyl sulfonic acid anion, tetrafluoroborate (BF4?), or hexafluorophosphate (PF6?).

Abstract: The invention relates to an electrolyte, comprising at least one lithium salt, a solvent, and at least one compound according to general formula (1). The invention further relates to lithium-based energy stores comprising such an electrolyte.

Abstract: A lithium-ion capacitor may include a cathode, an anode, a separator disposed between the cathode and the anode, a lithium composite material, and an electrolyte solution. The cathode and anode may be non-porous. The lithium composite material comprises a core of lithium metal and a coating of a complex lithium salt that encapsulates the core. In use, the complex lithium salt may dissolve into and constitute a portion of the electrolyte solution.

Abstract: Disclosed are an aluminum electrolytic capacitor having low impedance properties and a long service life, and an electrolytic solution which enables to give such capacitor. The electrolytic solution contains a solvent containing water, a phosphorus oxoacid ion-generating compound which can generate a phosphorus oxoacid ion in an aqueous solution, and a chelating agent which can coordinate with aluminum to form an aqueous aluminum chelate complex. The electrolytic solution further contains a compound selected from the group consisting of azelaic acid and an azelaic acid salt, and a compound selected from the group consisting of formic acid, a formic acid salt, adipic acid, an adipic acid salt, glutaric acid and a glutaric acid salt. The content of azelaic acid and/or the azelaic acid salt is at least 0.03 moles per kg of the solvent.

Abstract: There is provided an electrolyte solution including a solvent formed from a sulfone, and a magnesium salt dissolved in the solvent.

Abstract: The present invention provides an aligned carbon nanotube assembly constituted of carbon nanotubes each having a defective pore on its side surface, a method of manufacturing the aligned carbon nanotube assembly, a carbon-based electrode, and a power storage device. The aligned carbon nanotube assembly is formed by aggregating a large number of carbon nanotubes aligned in parallel along the same direction and having parallel orientation. In such a state that the aligned carbon nanotube assembly remains grown, the carbon nanotube constituting the aligned carbon nanotube assembly has a defective pore on its side surface. In a raman spectrum of the aligned carbon nanotube assembly in a Raman spectrometric method, when intensity of scattered light in D-band is represented by ID and intensity of scattered light in G-band is represented by IG, an ID/IG ratio is not less than 0.80.

Abstract: Disclosed are an aluminum electrolytic capacitor having low impedance properties and a long service life, and an electrolytic solution which enables to give such capacitor. The electrolytic solution contains a solvent containing water, a phosphorus oxoacid ion-generating compound which can generate a phosphorus oxoacid ion in an aqueous solution, and a chelating agent which can coordinate with aluminum to form an aqueous aluminum chelate complex. The electrolytic solution further contains a compound selected from the group consisting of azelaic acid and an azelaic acid salt, and a compound selected from the group consisting of formic acid, a formic acid salt, adipic acid, an adipic acid salt, glutaric acid and a glutaric acid salt. The content of azelaic acid and/or the azelaic acid salt is at least 0.03 moles per kg of the solvent.

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 tetraethylene glycol dimethyl ether. The capacitor has an operating voltage ninety percent or greater of its formation voltage.

Abstract: The invention concerns novel ionic compounds with low melting point whereof the onium type cation having at least a heteroatom such as N, 0, S or P bearing the positive charge and whereof the anion includes, wholly or partially, at least an ion imidide such as (FXI0)N—(OX2F) wherein X1 and X2 are identical or different and comprise SO or PF, and their use as solvent in electrochemical devices. Said composition comprises a salt wherein the anionic charge is delocalised, and can be used, inter alia, as electrolyte.

Abstract: A process is provided for producing an electrolytic capacitor element that can uniformly form a highly electrically conductive polymer having a nano thickness level on a nano porous anode element substrate and suitable for use in high-capacitance electrolytic capacitors used in emergency power supplies and backup power supplies in electronic equipment. An oxide film and an electrically conductive polymer film are formed by pulsed constant current electrolysis of a monomer for an electrically conductive polymer and a nanoporous valve action metal in an electrolysis solution comprising an ionic liquid.

Abstract: An electrochemical capacitor includes a first electrode connected to a positive terminal of a power source during the charge of the electrochemical capacitor and a second electrode connected to a negative terminal of a power source during the charge of the electrochemical capacitor. The first and the second electrodes each have a carbon material. The electrochemical capacitor further includes a porous separator to separate the first and second electrodes and to be impregnated with an almost neutral aqueous electrolyte situated between the two electrodes. The neutral aqueous electrolyte has a salt formed by a metallic cation and an anion.

Abstract: An aqueous liquid composition contains a water-based medium containing water, a polymer having at least one type of groups selected from hydroxyl groups and amino groups, and phosphonobutanetricarboxylic acid. The aqueous liquid composition contains low-cost materials having low environmental load, can retain adequate viscosity even when stored over a long term, and can form a functional coating film having excellent adhesiveness to a base material and superb durability, solvent resistance and waterproofness and capable of exhibiting various functions led by electrical conductivity and hydrophilicity.

Abstract: The object of an exemplary embodiment of the invention is to provide a separator for an electric storage device which has small heat shrinkage in a high-temperature environment, and in which the increase of the battery temperature can be suppressed. An exemplary embodiment of the invention is a separator for an electric storage device, which comprises a cellulose derivative represented by a prescribed formula. The separator for an electric storage device can be obtained, for example, by treating a cellulose separator containing cellulose with a halogen-containing carboxylic acid or a halogen-containing alcohol.

Abstract: An electrochemical cell includes solid-state, printable anode layer, cathode layer and non-aqueous gel electrolyte layer coupled to the anode layer and cathode layer. The electrolyte layer provides physical separation between the anode layer and the cathode layer, and comprises a composition configured to provide ionic communication between the anode layer and cathode layer by facilitating transmission of multivalent ions between the anode layer and the cathode layer.

Abstract: An electric double layer capacitor, a lithium ion capacitor, and a charging device including a solar cell and either of the capacitors are disclosed. The electric double layer capacitor includes a first and second light-transmitting substrates; a pair of current collectors provided perpendicular to the substrates; active material layers provided on facing planes of the current collectors; and an electrolyte in a region surrounded by the substrates and the facing active material layers. The lithium ion capacitor includes a first and second light-transmitting substrates; a positive and negative electrode active material layers provided perpendicular to the substrates; and an electrolyte in a region surrounded by the facing substrates and the positive and negative electrode active material layers.

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

Abstract: The present invention provides a multi-component hybrid electrode for use in an electrochemical super-hybrid energy storage device. The hybrid electrode contains at least a current collector, at least an intercalation electrode active material storing lithium inside interior or bulk thereof, and at least an intercalation-free electrode active material having a specific surface area no less than 100 m2/g and storing lithium on a surface thereof, wherein the intercalation electrode active material and the intercalation-free electrode active material are in electronic contact with the current collector. The resulting super-hybrid cell exhibits exceptional high power and high energy density, and long-term cycling stability that cannot be achieved with conventional supercapacitors, lithium-ion capacitors, lithium-ion batteries, and lithium metal secondary batteries.

Abstract: Electrolyte for use in an energy storage device such as a capacitor or supercapacitor which comprises a solvent (preferably propionitrile) and an ionic species (preferably methyltriethylammonium tetrafluoroborate). The electrolytes provide a low ESR rise rate, a high voltage and permit operation over a wide range of temperatures, which makes them beneficial for use in a range of energy storage devices such as digital wireless devices, wireless LAN devices, mobile telephones, computers, electrical or hybrid electrical vehicles.

Abstract: A wet electrolytic capacitor is provided. The capacitor contains an anode comprising an anodically oxidized pellet formed from a pressed and sintered powder, a cathode that contains a metal substrate coated with a conductive polymer, and a working electrolyte in communication with the anode and the cathode. The working electrolyte is in the form of a gel and comprises an ammonium salt of an organic acid, inorganic oxide particles, an acid, and a solvent system that comprises water. The working electrolyte has a pH value of from about 5.0 to about 8.0.

Abstract: Highly dispersed lithium titanate crystal structures having a thickness of few atomic layers level and the two-dimensional surface in a plate form are supported on carbon nanofiber (CNF). The lithium titanate crystal structure precursors and CNF that supports these are prepared by a mechanochemical reaction that applies sheer stress and centrifugal force to a reactant in a rotating reactor. The mass ratio between the lithium titanate crystal structure and carbon nanofiber is preferably between 75:25 and 85:15. The carbon nanofiber preferably has an external diameter of 10-30 nm and an external specific surface area of 150-350 cm2/g. This composite is mixed with a binder and then molded to obtain an electrode, and this electrode is employed for an electrochemical element.

Abstract: The present invention provides an electrolyte highly reliable in charge and discharge in a high voltage condition, and an electrochemical capacitor using the same. The electrolyte of the present invention includes a solvent, an electrolyte salt having an anion having a perfluoro alkyl group represented by a following composition formula, and an acid inducing substance having a fluorine atom for an anion, characterized in that the weight ratio of the acid inducing substance is in a range of 0.0001 to 2.0 wt %: MX+[Q(Rf)yFz]X? (wherein Q is a group 13 or group 15 element in the periodic table, Rf is a perfluoro alkyl group (CnF2n+1), n is a natural number, 1?y<6, 1?z<6, MX+ is a cation of Xth valence, and X is a natural number from 1 to 3).

Abstract: A one-side pressed terminal is applied as a first anode (cathode) lead tab terminal and the one-side pressed terminal is connected to an anode (a cathode) foil in such a manner that a position in a radial direction of a lead is shifted inward after winding. A one-side pressed terminal is applied as a second anode (cathode) lead tab terminal and the one-side pressed terminal is connected to the anode (cathode) foil in such a manner that a position in the radial direction of a lead is shifted inward after winding. Thus, while retaining characteristics as an electrolytic capacitor, connection of the anode (cathode) lead tab terminal to the anode (cathode) foil can be achieved in a stable manner.

Abstract: A mixed solvent is prepared by dissolving acetic acid and lithium acetate in a mixture of isopropanol and water. This mixed solvent together with titanium alkoxide and carbon nanofiber (CNF) were introduced into a rotary reactor, the inner tube was rotated at a centrifugal force of 66,000 N (kgms?2) for 5 minutes to form a thin film of the reactant on the inner wall of the outer tube, and sheer stress and centrifugal force were applied to the reactant to allow promotion of chemical reaction, yielding CNF on which highly dispersed lithium titanate nanoparticle precursors are supported. The obtained composite powder was heated under nitrogen atmosphere at 900° C. for 3 minutes, yielding a composite powder in which highly dispersed lithium titanate nanoparticles are supported on CNF, wherein crystallization of lithium titanate was allowed to progress.

Abstract: A power storage device with high output is provided, in which the specific surface area is increased while keeping the easy-to-handle particle size of its active material. The power storage device includes a positive electrode including a positive electrode current collector and a positive electrode active material layer, a negative electrode including a negative electrode current collector and a negative electrode active material layer, and an electrolyte. The negative electrode active material layer includes a negative electrode active material which is a particle in which a plurality of slices of graphite is overlapped with each other with a gap therebetween. It is preferable that the grain diameter of the particle be 1?m to 50 ?m. Further, it is preferable that the electrolyte be in contact with the gap between the slices of graphite.

Abstract: The present invention is directed to an electrolyte for an electrolytic capacitor. The capacitor has an electrolytic anode and an electrochemical cathode. The electrolyte has water, a water soluble organic salt, and a relatively weak organic acid. This electrolyte is chemically compatible to aluminum and tantalum oxide dielectrics and withstands higher voltage while maintaining good conductivity. This makes the electrolyte especially useful for high voltage applications, such as occur in an implantable cardiac defibrillator.