41results about How to "High characteristics" patented technology

The present invention relates to a method of preparing a positive active material for a rechargeable lithium battery, a positive active material prepared according to the method, and a rechargeable lithium battery including the same. This manufacturing method includes preparing a complex salt solution by mixing a solution including a metal source material and a chelating agent, disposing the complex salt on the surface of a lithium-included compound by adding a lithium-included compound to the complex salt solution, adding a solution including a fluorine source material to the solution including a lithium-included compound with the complex salt on the surface, and heat-treating the mixture. The present invention provides a simple method of economically preparing a positive active material in which structural transition on the surface is prevented and securing a uniform coating layer. In addition, the positive active material can have improved charge and discharge characteristics, cycle life characteristic, and rate characteristic. It also has improved ion conductivity, and accordingly can improve mobility of lithium ions in an electrolyte and thereby improve discharge potential of a battery. Furthermore, the positive active material can decrease the amount of a conductive material and increase density of a substrate.

A light emitting device having: a light emitting element; an electricity supply portion on which the light emitting element is mounted and which supplies electricity; and an inorganic sealing material for sealing the light emitting element. The inorganic sealing material has a tapered surface which becomes wider outward in a side surface direction with respect to a center axis of the light emitting element.

A photosensitization chemical-amplification type resist material according to the present invention is used for a two-stage exposure lithography process, and contains (1) a developable base component and (2) a component generating a photosensitizer and an acid through exposure. Among three components consisting of (a) an acid-photosensitizer generator, (b) a photosensitizer precursor, and (c) a photoacid generator, the above component contains only the component (a), any two components, or all of the components (a) to (c).

The present invention provides a novel hybrid polymer electrolyte, a lithium secondary battery comprising the hybrid polymer electrolyte polymer and their fabrication methods. More particularly, the present invention provides the hybrid polymer electrolyte comprising superfine fibrous porous polymer matrix with particles having diameter of 1-3000 nm, polymers and lithium salt-dissolved organic electrolyte solutions incorporated into the porous polymer matrix. The hybrid polymer electrolyte has advantages of better adhesion with electrodes, good mechanical strength, better performance at low and high temperatures, better compatibility with organic electrolytes of a lithium secondary battery and it can be applied to the manufacture of lithium secondary batteries.

A non-aqueous secondary battery includes a positive electrode 1, a negative electrode 2, a separator 3, and a non-aqueous electrolyte solution, wherein the non-aqueous electrolyte solution contains an aromatic compound in an amount of 2 to 15% by mass with respect to a total mass of the electrolyte solution, the separator 3 has a MD direction and a TD direction, a heat shrinkage at 150° C. in the TD direction of 30% or less, a thickness of 5 to 20 mum, and an air permeability of 500 seconds / 100 ml or less. Because of this, a non-aqueous secondary battery can be obtained, which is excellent in safety and high rate characteristics and is operated stably even at a high temperature. Furthermore, by allowing the non-aqueous secondary battery of the present invention to be contained in electronic equipment, the reliability of the electronic equipment can be enhanced. Furthermore, a prismatic or laminate-shaped non-aqueous secondary battery is pressed in its direction to be contained in electronic equipment, whereby the safety of the electronic equipment can be enhanced.

Disclosed are a flame retardant electrolyte solution for a rechargeable lithium battery including a lithium salt, a linear carbonate-based solvent, an ionic liquid including ammonium cations, and a phosphoric acid-based solvent, and a rechargeable lithium battery including the same.

A structure arrangement and method for the protection of a host system against an impacting ballistic element and for providing ease of mobility. The structure arrangement includes a composite. The composite includes a matrix and a multiplicity of single-walled carbon nanotubes. The single-walled carbon nanotubes are arranged with respect to the matrix so as to define an array for engagement with an impacting ballistic element.

Disclosed is an energy storage device based on metal oxide nanocrystals resealed through lithiation, and a supercapacitor using the same. The energy storage device is fabricated by dispersing transition metal nanoparticles over a carbon-based support with a large specific surface area, and then, dispersing and resealing the nanoparticles over the support using lithium ions with strong reductive ability, so that the resealed metal particles are substantially particles dispersed and resealed over the support as particles having a size of less than 1 nanometer on the scale of atomic units. The supercapacitor is fabricated using the energy storage device. The energy storage device higher capacitance than before resealing of metal oxide. Since the resealed metal particles are those having a size of less than 1 nanometer on the scale of atomic units, interference between particles disappears to exhibit excellent cycle life characteristics of 100% maintained performance in even more than 100,000 cycles.

An exemplary embodiment of the present specification provides an organic electroluminescence device including: an anode; a cathode; a light emitting layer provided between the anode and the cathode; and an electron transporting layer provided between the cathode and the light emitting layer, in which the electron transporting layer includes a first electron transporting material and a second electron transporting material, the first electron transporting material is an organic material including a monocyclic or polycyclic ring which includes an N-containing six-membered ring, the second electron transporting material is an organic material including a five-membered hetero ring which includes at least one heteroatom of N, O, and S, or a cyano group, and a dipole moment of the second electron transporting material is larger than a dipole moment of the first electron transporting material.

A binder fiber comprising a polyamide component in at least part of a surface thereof is prepared. The polyamide component contains a semi-aromatic polyamide at least having an aromatic ring unit and a C3-7 alkane unit which may have a branched CA 1-3 alkyl chain. In the binder fiber, the polyamide component may be (a) a semi-aromatic copolyamide having an aromatic ring unit, a C3-7 alkane unit which may have a branched C1-3 alkyl chain, and a C8-12 alkane unit which may have a branched C1-3 alkyl chain. The polyamide component may be (d) a combination of (b) a semi-aromatic polyamide and (c) a semi-aromatic polyamide, wherein the polyamide (b) has an aromatic ring unit and a C3-7 alkane unit which may have a branched C1-3 alkyl chain, and the polyamide (c) has an aromatic ring unit and a C8-12 alkane unit which may have a branched C1-3 alkyl chain.

A liquid crystal display device that can be fabricated more simply as compared with a conventional device and suitably used in a liquid crystal display television satisfying both high pixel transmittance and wide viewing angle display characteristics is provided. The liquid crystal display device includes a pair of substrates including at least one transparent substrate, a liquid crystal layer interposed between the pair of substrates, and a liquid crystal alignment layer interposed between the liquid crystal layer and at least any one of the pair of substrates. On the liquid crystal alignment layer, a plurality of closed regions having a liquid crystal alignment direction different from the surrounding liquid crystal alignment direction are arranged. In the liquid crystal display element, each of the closed regions has such a shape that the head and tail are distinguishable along the surrounding liquid crystal alignment direction.

The present invention relates to a jelly-roll type electrode assembly comprising: a sheet-like positive electrode; a sheet-like negative electrode; and a separator which is interposed between the positive electrode and the negative electrode, and which includes a first adhesive coating part and a second adhesive coating part formed on a first surface of a sheet-like porous substrate, and a third adhesive coating part formed on a second surface which is the opposite surface to the first surface, wherein the first adhesive coating part and the second adhesive coating part have different tack strength from each other.

A liquid crystal display device that can be fabricated more simply as compared with a conventional device and suitably used in a liquid crystal display television satisfying both high pixel transmittance and wide viewing angle display characteristics is provided. The liquid crystal display device includes a pair of substrates including at least one transparent substrate, a liquid crystal layer interposed between the pair of substrates, and a liquid crystal alignment layer interposed between the liquid crystal layer and at least any one of the pair of substrates. On the liquid crystal alignment layer, a plurality of closed regions having a liquid crystal alignment direction different from the surrounding liquid crystal alignment direction are arranged. In the liquid crystal display element, each of the closed regions has such a shape that the head and tail are distinguishable along the surrounding liquid crystal alignment direction.

A negative electrode for nonaqueous electrolyte secondary battery comprising a current collector with a concave and a convex formed at least on one surface thereof, and a column member having n (n≧2) stages of laminated columnar portions obliquely formed on the convex of the current collector, wherein a layer being less in expansion and contraction due to insertion and extraction of lithium ion is disposed in the column member.

A structure arrangement and method for the protection of a host system against an impacting ballistic element and for providing ease of mobility. The structure arrangement includes a composite. The composite includes a matrix and a multiplicity of single-walled carbon nanotubes. The single-walled carbon nanotubes are arranged with respect to the matrix so as to define an array for engagement with an impacting ballistic element.

A color filter substrate for a liquid crystal display and a method of fabricating the same are provided. The color filter substrate for a liquid crystal display includes: light shielding parts formed on a substrate at predetermined intervals to prevent light leakage; color filter Layers disposed between the light shielding parts and including color filter patterns of red (R), green (G) and blue (B) for implementing a color image; and a transparent conductive layer formed on a rear surface of the substrate, on which the color filter layers are formed, and formed in a porous structure having a plurality of holes spaced at predetermined intervals. Therefore, it is possible to shield an electrostatic field due to external static electricity and improve image display quality, thereby increasing high brightness characteristics and readability.

A positive active material for a rechargeable lithium battery, a method of preparing the same, and a rechargeable lithium battery including the same are disclosed, and the positive active material for a rechargeable lithium battery includes: a layered lithium composite oxide core; a first coating layer on the surface of the core and magnesium doped at a lithium site in the core; a NiO-phase second coating layer on the first coating layer wherein the NiO-phase has a rock salt structure; and a third coating layer on the second coating layer and including lithium magnesium phosphate.

An MR element includes: a free layer whose direction of magnetization changes in response to a signal magnetic field; a pinned layer whose direction of magnetization is fixed; and a spacer layer disposed between these layers. The spacer layer includes: a semiconductor layer made of an n-type semiconductor; and a Schottky barrier forming layer made of a metal material having a work function higher than that of the n-type semiconductor that the semiconductor layer is made of, the Schottky barrier forming layer being disposed in at least one of a position between the semiconductor layer and the free layer and a position between the semiconductor layer and the pinned layer, touching the semiconductor layer and forming a Schottky barrier at an interface between the semiconductor layer and itself The semiconductor layer is 1.1 to 1.7 nm in thickness, and the Schottky barrier forming layer is 0.1 to 0.3 nm in thickness.

A magnetic recording medium comprising a flexible support, a lower non-magnetic layer comprising a non-magnetic powder and a binder formed on the flexible support, and an upper magnetic layer comprising a ferromagnetic powder and a binder formed on the lower non-magnetic layer, wherein the upper magnetic layer has a SFD value of 0.5 or less, the magnetic powder contained in the upper magnetic layer has an average major axis length of 80 nm or less, and a SFD value of the upper magnetic layer is 1.2 times or less the initial SFD value after the magnetic recording medium is stored at a temperature of 60° C. and a relative humidity of 90% RH for 90 days.

Disclosed are a flame retardant electrolyte solution for a rechargeable lithium battery including a lithium salt, a linear carbonate-based solvent, an ionic liquid including ammonium cations, and a phosphoric acid-based solvent, and a rechargeable lithium battery including the same.

A method of manufacturing a superconducting wire is provided. A MgB2 superconducting wire capable of obtaining a stabilizer through an inexpensive process can have high critical current density and magnetic field characteristics without separate plastic. A seamed portion of the wire can be welded to make it possible to plate the wire with conductive materials and inhibit a decrease in quality of superconducting powder. It is possible to obtain a stabilizer without inserting the superconducting powder into a tube.

A negative active material for a secondary battery that provides high capacity, high efficiency charging and discharging characteristics includes: a silicon single phase; and a silicon-metal alloy phase by which the silicon single phase is bounded, wherein the negative active material comprises 5 to 30 wt % of nickel, 5 to 30 wt % of titanium, and 40 to 90 wt % of silicon, the negative active material has a first peak of the silicon-metal alloy phase in an X-ray diffraction analysis spectrum, the silicon single phase is finely distributed in the silicon-metal single phase by mechanical alloying, and the first peak resulting from the (501) surface of the silicon-metal alloy phase has a greater value than the first peak resulting from the (501) surface of the silicon-metal alloy phase that is not subjected to the mechanical alloying, by 0.6° to 0.9°.

The present invention provides for two types of wide operating temperature range electrolyte formulations that contain methyl butyrate (MB) and additives have been investigated and compared in Lithium-ion capacitors (LICs), which were consisted of hard carbon (HC) / stabilized lithium metal powder (SLMP) anodes and activated carbon (AC) cathodes. The electrolyte L1 that was 1M LiPF6 in ethylene carbonate (EC)+ethyl methyl carbonate (EMC)+MB (20:20:60 v / v %)+0.1M lithium bis(oxalato)borate (LiBOB) and electrolyte L2 that was 1M LiPF6 in EC+EMC+MB (20:20:60 v / v %)+0.1M lithium difluoro(oxalato)borate (LiDFOB) enabled the LICs to discharge at the temperature as low as −40° C., which the conventional electrolyte LP30 that was 1 M LiPF6 in EC+dimethyl carbonate (DMC) (50:50 w / w %) could not achieve. At the low temperature of −40° C., L2 held more than 64% of the discharge capacity at 30° C., while the L1 only had the discharge capacity retention of 30%. In addition, L2 proved to achieve better cycling performance compared to L1. After 10,000 cycles, the capacity retention of L1 and L2 were about 86.6% and 84.7%, which demonstrated the stable cycling performance for electrolyte L1 and L2. In summary, L2 was the most suitable electrolyte for the LICs energy storage devices which would be applied in the temperature as low as −40° C.

A furan derivative represented by the following General Formula (1):where Ar1 and Ar2 each independently represent an aryl group which may have a substituent, and R1 represents a C1-C6 alkylene group.

Provided are a positive electrode active material that can provide a nonaqueous electrolyte secondary battery having high energy density and excellent output characteristics, a nickel-manganese composite hydroxide as a precursor thereof, and methods for producing these. A nickel-manganese composite hydroxide is represented by General Formula (1): NixMnyMz(OH)2+α and contains a secondary particle formed of a plurality of flocculated primary particles. The nickel-manganese composite hydroxide has a half width of a diffraction peak of a (001) plane of at least 0.35° and up to 0.50° and has a degree of sparsity / density represented by [(a void area within the secondary particle / a cross section of the secondary particle)×100](%) within a range of greater than 10% and up to 25%.

A magnetic recording and reproducing system, including recording a signal on a magnetic recording medium by an inductive head and reproducing the signal by a magneto resistance head. The gap length of the inductive head is 0.3 μm or less. The maximum particle diameter of ferromagnetic powder is from 1 / 10 to ½ of the gap length, the minimum particle diameter of the powder is from 1 / 100 to ⅕ of the gap length, and the thickness of a magnetic layer is from 1 / 10 to ½ of the gap length. The average particle size of the powder is from 10 to 35 nm, the tabular ratio is from 2 to 6, the squareness ratio of in-plane of the magnetic layer is from 0.5 to 0.9 in the longitudinal direction, and from 0.2 to 0.6 in the thickness direction, and the thickness of the magnetic layer is from 0.01 to 0.2 μm.

A nickel metal hydride storage battery which includes a positive electrode containing nickel hydroxide as a active material, a negative electrode containing a hydrogen absorbing alloy which contains aluminum, a separator and an alkaline electrolyte, wherein a complex-forming agent which forms a complex with aluminum is included in the negative electrode.

To provide a dye to be used for an optical recording medium excellent in both high speed recording characteristics and reproduction durability.A dye having an azo compound represented by the following formula coordinated to a metal ion:wherein the ring A represents a nitrogen-containing heteroaromatic ring containing a carbon atom and a nitrogen atom; X represents C—R1R2, an oxygen atom, a sulfur atom or N—R3, wherein each of R1, R2 and R3 which are independent of one another, represents a hydrogen atom, a linear or branched alkyl group, an aralkyl group, a cycloalkyl group, a linear or branched alkenyl group, an aryl group or an acyl group represented by —COR4, wherein R4 is a hydrocarbon group or a heterocyclic group which may be substituted; and the benzene ring B represents a benzene ring which may have a substituent(s), provided that adjacent substituents in the benzene ring B may be mutually bonded to form a ring.

Disclosed is an energy storage device based on metal oxide nanocrystals resealed through lithiation, and a supercapacitor using the same. The energy storage device is fabricated by dispersing transition metal nanoparticles over a carbon-based support with a large specific surface area, and then, dispersing and resealing the nanoparticles over the support using lithium ions with strong reductive ability, so that the resealed metal particles are substantially particles dispersed and resealed over the support as particles having a size of less than 1 nanometer on the scale of atomic units. The supercapacitor is fabricated using the energy storage device. The energy storage device higher capacitance than before resealing of metal oxide. Since the resealed metal particles are those having a size of less than 1 nanometer on the scale of atomic units, interference between particles disappears to exhibit excellent cycle life characteristics of 100% maintained performance in even more than 100,000 cycles.