22results about How to "Improve output characteristics" patented technology

The present invention relates to a non-aqueous electrolyte solution for a lithium secondary battery and a lithium secondary battery including the same. Specifically, the non-aqueous electrolyte solution for a lithium secondary battery includes a lithium salt, an organic solvent and a compound represented by Formula 1 to form a robust SEI film, thereby improving battery performance.

The utility model relates to the technical field of marine engines, and discloses a variable valve timing and lifting device of a marine four-stroke engine, which comprises a rocker arm and a cam, a shaft hole connected with a fixed rotating shaft is arranged at one end of the rocker arm, a driving ring is arranged between the fixed rotating shaft and the rocker arm, and a step groove is arranged in the middle of the rocker arm. A step groove is formed in the rocker arm, a roller control arm is arranged in the step groove, a roller is arranged in the roller control arm, the roller control arm is connected with the driving ring, the driving ring can drive the roller control arm to move back and forth in the step groove, and the cam is located above the rocker arm and makes contact with the roller in the step groove of the rocker arm. The driving device is additionally arranged on the roller on the rocker arm of the valve mechanism of the four-stroke engine, so that the position of the roller relative to the cam is variable, the function that the phase of the valve mechanism of the engine is variable is achieved, the output characteristic of the engine can be effectively improved, the fuel economy is improved, and the system is simple and compact in structure and convenient to maintain.

A nonaqueous electrolytic solution for a nonaqueous electrolytic solution battery including a positive electrode which contains an oxide containing at least nickel as a positive electrode active material and has a content of nickel of 30% by mass to 100% by mass in a metal contained in the positive electrode active material, the nonaqueous electrolytic solution including: (I) a nonaqueous solvent; (II) a solute; and (III) a compound represented by General Formula [1], in which a content of (III) is 0.001% by mass to 1.8% by mass with respect to 100% by mass of a total amount of (I) to (III),         R(SO2X)m     [1] in which R represents monovalent to tetravalent groups containing at least one carbon atom, and the group may contain at least one selected from the group consisting of hydrogen atoms, halogen atoms, unsaturated bonds, aromatic rings, oxygen atoms, and ester bonds. X represents a halogen atom or a linear or branched perfluoroalkyl group having 1 to 10 carbon atoms. m represents an integer of 1 to 4. when m represents an integer of 2 to 4, a plurality of X may be the same or different.

Provided is a battery that has a large energy density and excellent output characteristics. A battery of the present invention relates to Sustainable Development Goals 12, 3, 7, and 11. A battery of an aspect of the present invention includes a plurality of unit electrode bodies. Each unit electrode body includes a positive electrode that includes a molded body of a positive electrode mixture that contains a positive electrode active material, a negative electrode that includes a negative electrode active material layer that contains a negative electrode active material, and a solid electrolyte layer or a separator that is interposed between the positive electrode and the negative electrode. The plurality of unit electrode bodies is stacked on top of each other. Adjacent ones of the unit electrode bodies are connected with each other in series. L / S ≤ 0.5 and 0.02 ≤ L ≤ 0.20, where L (cm) is the thickness of each unit electrode body, and S (cm2) is the electrode area of the unit electrode body. The molded body of the positive electrode mixture and the negative electrode active material layer each have a porosity of 10% or less. When the solid electrolyte layer is included, the solid electrolyte layer has a porosity of 10% or less.

Provided is an electrode binder for a biofuel cell, which can produce a biofuel cell exhibiting excellent output characteristics, and which provides an electrode paste that is low in environmental load and has good dispersibility of an electrically conductive material and is suitable for screen printing. The electrode binder for a biofuel cell of the present invention comprises a polymer (A) having a first structural unit derived from a nonionic ethylenically unsaturated monomer (a1), a second structural unit derived from an anionic ethylenically unsaturated monomer (a2), and a third structural unit derived from a crosslinking agent (a3) having two or more ethylenically unsaturated bonds in one molecule.

The present invention provides an electrode for a non-aqueous electrolyte secondary battery capable of obtaining high output characteristics and a non-aqueous electrolyte secondary battery having the same. The electrode for a non-aqueous electrolyte secondary battery comprises a current collector and a positive electrode active material layer disposed on the current collector and containing a positive electrode active material, wherein the positive electrode active material comprises compound particles having a layered structure formed by two or more transition metals, wherein the average particle size DSEM of the compound particles based on electron microscope observation is 1 μm or more and 7 μm or less, the ratio of the 50% particle size D50 in the cumulative particle size distribution based on the volume basis to the average particle size DSEM is 1 or more and 4 or less, and the ratio of the 90% particle size D90 in the cumulative particle size distribution based on the volume basis to the 10% particle size D10 in the cumulative particle size distribution based on the volume basis is 4 or less, and the porosity of the positive electrode active material layer is 10% to 45%.

This non-aqueous electrolyte secondary battery comprises an electrode body, an exterior body which has a prescribed exterior shape and which houses the electrode body, and a sealing body which seals an opening at the upper end of the exterior body. A positive electrode included in the electrode body includes a positive electrode current collector and a positive electrode mixture layer which is formed on the surface of the positive electrode current collector and which includes a positive electrode active material and a conductive agent. The positive electrode active material contains a lithium-containing complex oxide. The lithium-containing complex oxide has a layered rock salt structure, contains substantially no Co, and contains at least Ni and Mn. The Ni content in the lithium-containing complex oxide is not less than 70 mol% with respect to the total number of moles of metal elements excluding Li. The basis weight of the positive electrode mixture layer is not less than 250 g / m2. Three or more positive electrode leads are drawn out in the electrode body.

Provided is a technique that makes it possible to cause a secondary battery to display excellent output characteristics and other characteristics. Secondary battery production is performed using a conductive material dispersion liquid that contains a conductive material, a dispersant, and a solvent. The conductive material is one or more carbon nanotubes having a specific surface area of not less than 800 m2 / g and not more than 1,300 m2 / g and having a volume-average particle diameter (D90) of 50 µm or less in the conductive material dispersion liquid. The dispersant is a hydrogenated acrylonitrile-butadiene copolymer having a weight-average molecular weight of 200,000 or less.

The present embodiment relates to a positive electrode active material, a preparation method thereof, and a lithium secondary battery comprising the positive electrode active material. According to one embodiment, the positive electrode active material is a lithium metal oxide particle in the form of a secondary particle comprising a primary particle, a coating containing a boron compound is located on at least a portion of the surface of the primary particle, and the boron compound may include an amorphous structure.

The present application aims to provide a slurry composition for a full solid secondary battery, which can form a solid electrolyte-containing layer that can allow a full solid secondary battery to exhibit excellent output characteristics and cycle characteristics. The slurry composition of the present application contains a solid electrolyte, a particulate polymer, and an organic solvent. The particulate polymer has a core-shell structure having a core portion and a shell portion covering at least a part of the outer surface of the core portion, the glass transition temperature of the polymer constituting the core portion is -60°C or higher and -10°C or lower, and the glass transition temperature of the polymer constituting the shell portion is 15°C or higher and 100°C or lower. Furthermore, the polymer constituting the shell portion contains a nitrogen-containing functional group monomer unit at a proportion of 10% by mass or more and 90% by mass or less.

The present invention relates to a method of preparing a lithium secondary battery which includes steps (1) to (5) below. (1) preparing a first positive electrode active material by mixing a small particle lithium composite transition metal oxide having an average particle diameter (D50) of less than 7 um with a boron-containing raw material and performing a heat treatment; (2) preparing a second positive electrode active material by mixing a large particle lithium composite transition metal oxide having an average particle diameter (D50) of 8 um or more with a cobalt-containing raw material and a boron-containing raw material and performing a heat treatment; (3) mixing the first positive electrode active material and the second positive electrode active material to prepare a positive electrode material having a bimodal particle diameter distribution; (4) preparing a positive electrode by coating the positive electrode material on a positive electrode collector; and (5) assembling the positive electrode, a negative electrodeincluding a silicon-based negative electrode active material, and a separator

A display device and a method of manufacturing the same are provided. The display device includes: a substrate including a display area and a driving circuit area; a first transistor in the display area and including a first active layer on the substrate and a first gate electrode on the first active layer; a first gate insulating layer between the first active layer and the first gate electrode and entirely covering the first active layer; a second transistor in the driving circuit region and including a second active layer on the substrate and a second gate electrode on the second active layer; a second gate insulating layer between the second active layer and the second gate electrode, covering a portion of the second active layer overlapping the second gate electrode, and exposing other portions of the second active layer; and a first oxide semiconductor layer between the first gate insulating layer and the first gate electrode.

The present disclosure relates to a lithium secondary battery structure which suppresses heat generation or ignition, thereby exhibiting improved output characteristics while having excellent safety. The lithium secondary battery structure includes a plurality of battery cells each including: a first electrode including a first conductive current collector having an active material layer formed on at least one surface; a second electrode including a second conductive current collector having an active material layer formed on at least one surface; and a separator formed between the active material layers of the first electrode and the second electrode facing each other, in which, for each battery cell, the first conductive current collector or the second conductive current collector is a metal current collector, or a composite conductive current collector having a metal layer formed on a polymer substrate, and wherein the metal current collector: composite conductive current collector is included within the overall cell structure at a number ratio of 5: 1 to 1: 5.

The present disclosure relates to a separator having a remarkably excellent voltage resistance property and a lithium secondary battery including the same. According to one aspect of the present disclosure, there is provided a separator including: a porous substrate; and an inorganic particle layer formed on at least one side of the porous substrate, containing a binder and inorganic particles, a ratio of an insulation breakdown voltage (kV) of the separator to an overall average thickness (µm) of the separator being 0.15 kV / µm or more, having a peak appearing in a range of 1070 cm ‑1 to 1082 cm ‑1 in a spectrum based on Fourier transform infrared spectroscopy (FT-IR), a thermal shrinkage rate in a machine direction and a width direction measured after being left at 150℃ for 60 minutes being 5% or less, and a Δ Gurley air permeability being 100 sec / 100cc or less.

The present application relates to a negative electrode and a nonaqueous electrolyte secondary battery provided with the same. Provided is a negative electrode that achieves an improvement in cycle life and high output of a secondary battery. The negative electrode disclosed herein is provided with a negative electrode current collector and a negative electrode active material layer formed on the surface of the negative electrode current collector. The negative electrode active material layer contains silicon oxide containing at least one alkaline earth metal. The negative electrode active material layer contains at least a first layer and a second layer. The first layer is disposed between the second layer and the negative electrode current collector. In the case of the second layer, when the negative electrode active material of the second layer is taken as 100% by mass, the silicon oxide containing the alkaline earth metal is 2% by mass or less. Here, the amount of the alkaline earth metal in the first layer calculated based on energy dispersive X-ray analysis using a scanning electron microscope image is higher than the amount of the alkaline earth metal in the second layer.

The invention provides a gas sensor and a preparation method thereof, which are applied to the field of semiconductors. The gas sensor includes a transistor. The transistor comprises a channel layer, a barrier layer and a grid electrode which are sequentially arranged in a stacked mode. The barrier layer comprises a first groove structure, and the first groove structure is recessed in the direction from the barrier layer to the channel layer. At least part of the grid electrode is located in the first groove structure, and the material of the grid electrode comprises a gas sensitive material. The part of the barrier layer of the transistor of the gas sensor is thinned, so that the grid electrode is closer to two-dimensional electron gas between the barrier layer and the channel layer. Therefore, the charge change of the gas sensitive material of the grid affects the sensitivity of the change of the two-dimensional electron gas, so that the gas detection concentration range, the sensitivity and the response time of the whole gas sensor are improved.

There is provided a power storage device separator binder aqueous solution, where the power storage device separator binder aqueous solution contains a water soluble polymer (1) or contains a water soluble polymer (2) and a hydrazide. The water soluble polymer (1) contains 20% by mole to 80% by mole of an N,N-dialkyl (meth)acrylamide unit and 10% by mole to 80% by mole of a (meth)acrylamide unit. The water soluble polymer (2) contains 0.2% by mole to 10% by mole of a keto group-containing ethylenically unsaturated monomer unit and 65% by mole to 99.7% by mole of a (meth)acrylamide group-containing compound unit. The hydrazide has two or more hydrazide groups.

The invention belongs to the technical field of semiconductor devices, and particularly discloses a high-electron-mobility transistor with an InGaN insertion layer and a double-barrier cap layer and a preparation method of the high-electron-mobility transistor. The high-electron-mobility transistor comprises a substrate, a nucleating layer, an AlGaN gradient buffer layer, a GaN channel layer, an InGaN insertion layer, an AlGaN barrier layer, a barrier protection layer, a double-barrier cap layer (an AlGaN layer, a GaN layer and an AlGaN layer) and a gate electrode which are sequentially arranged in a contact mode. Ohmic contact regions are arranged on the two sides of the AlGaN barrier layer and the barrier protection layer respectively and are electrically connected with the source electrode and the drain electrode respectively. By introducing the specific epitaxial layer combination and doping design, the distribution and control of two-dimensional electron gas are optimized, the confinement to electrons is increased, the output characteristic of the device is improved, the current collapse effect is inhibited, the leakage current is reduced, and the threshold voltage stability and switching characteristic of the device are improved.

This positive-electrode active material for non-aqueous electrolyte secondary batteries is provided with: an electrode body in which a strip-shaped positive electrode and a strip-shaped negative electrode are wound with a separator interposed therebetween; a bottomed cylindrical exterior body having an outer diameter of 25 mm or more, that houses the electrode body and is connected to the negative electrode; and, a sealing body that seals an opening at the upper end of the exterior body and is connected to the positive electrode. The positive electrode includes a positive-electrode current collector, and a positive-electrode mixture layer formed on the surface of the positive-electrode current collector and containing a positive-electrode active material and an electroconductive agent. The positive-electrode active material includes a lithium-containing composite oxide having a chalcogen compound and / or a halogen compound adhered to the surface and a layered rock salt structure. The weight per unit area of the positive-electrode mixture layer is 250 g / m2 or more. In the electrode body, three or more positive-electrode leads are led out.

A method of manufacturing an electrode laminate includes preparing an electrode, applying an electrolyte solution to the electrode, disposing an oxygen blocking member on the applied electrolyte solution, and curing the electrolyte solution impregnated inside the electrode and the electrolyte solution applied to a surface of the electrode.

The present invention relates to a non-aqueous electrolyte solution for a lithium secondary battery and a lithium secondary battery including the same. Specifically, the non-aqueous electrolyte solution for a lithium secondary battery includes a lithium salt, an organic solvent and a compound represented by Formula 1 to form a robust SEI film, thereby improving battery performance.

This invention relates to a modular voltage regulator and its control method, as well as a DC power supply system for new energy power. The voltage regulator circuit of the voltage regulator adopts a modular design, and the voltage regulator modules are switched on and off in priority according to the predicted or measured load of the control bus. The voltage regulator controller controls the output of the voltage regulator circuit through the feedback control parameters of the DC / DC converter unit. When the charging circuit is in floating charging or equalizing charging state, the corresponding set feedback control parameters are used. When the charging circuit is in a locked state, the feedback control parameters are determined by the predicted results of the DC bus load or the DC bus load and load change rate, as well as the real-time energy storage of the energy storage circuit. This invention achieves dynamic optimization of the control model and control function, which is beneficial to improving output characteristics, extending product life, and is suitable for applications with limited space and relatively harsh environmental conditions, such as offshore wind power. It can mainly be used as an uninterruptible DC power supply for new energy power systems.