7890 results about "Active layer" patented technology

A sensor and method for page-based optical data storage. The sensor includes a partially-reflective mirror, a reflective mirror disposed substantially collinear with and spaced apart from the partially-reflective mirror, and an active layer disposed substantially collinear with and between the partially-reflective mirror and the reflective mirror. The partially-reflective mirror has a first and second side and transmits a portion of light incident on the first side. The reflective mirror reflects light incident on the reflective mirror toward the partially-reflective mirror. The active layer absorbs at least a portion of the light oscillating at the resonant frequency.

The invention provides a battery monomer, a battery device and a power utilization device. The battery monomer comprises a positive pole piece, an isolating membrane, a negative pole piece and electrolyte, and the positive pole piece, the isolating membrane and the negative pole piece are arranged in a laminated manner; the positive pole piece comprises a positive current collector and a positive active layer arranged on at least one side of the positive current collector, the negative pole piece comprises a negative current collector and a negative active layer arranged on at least one side of the negative current collector, and the positive active layer comprises lithium iron phosphate primary particles; the isolating membrane comprises a base membrane and a bonding layer, the bonding layer is of a porous continuous structure, and the bonding layer is at least arranged on one side, facing the positive electrode active layer, of the base membrane; the electrolyte comprises a first solvent, and the first solvent comprises one or more of dimethyl carbonate and linear carboxylic ester. The battery monomer has relatively good cycle performance.

The invention provides a battery monomer, a battery device and a power utilization device. Each battery monomer comprises a shell and an electrode assembly in the shell, the electrode assembly comprises a positive pole piece, a negative pole piece and an isolating membrane between the two pole pieces, the positive pole piece comprises a positive current collector and a positive active layer arranged on at least one side of the positive current collector, and the positive active layer comprises a positive active material; the positive electrode active material comprises a nickel-containing lithium transition metal oxide and a lithium-containing phosphate, the molar weight of the Ni element in the nickel-containing lithium transition metal oxide accounts for 70-95% of the total molar weight of the transition metal, the positive electrode active material comprises Ni, Co, Mn, Fe and Li elements, and the ratio of the mass of the Ni element in the positive electrode active material to the sum of the mass of the Fe element and the mass of the Mn element is 0.15-2.

The invention belongs to the technical field of batteries, and discloses a negative pole piece and a preparation method thereof, a non-negative lithium battery and a lithium battery. The negative pole piece comprises a current collector and a lithium-loving active layer, the lithium-loving active layer is arranged on at least one side of the current collector, the lithium-loving active layer comprises nanowires and conductive particles dispersed on the nanowires, and when lithium metal is deposited, the nanowires provide nucleation sites for the lithium metal. According to the negative pole piece provided by the invention, the coulombic efficiency and the cycling stability of the negative-electrode-free lithium battery can be improved.

The invention relates to the technical field of batteries, in particular to a lithium ion secondary battery. The lithium ion secondary battery comprises a negative plate and electrolyte, the negative plate comprises a negative current collector and a negative active layer located on at least one side surface of the negative current collector, the negative active layer comprises a first coating and a second coating which are arranged in the thickness direction of the negative plate, and the first coating is located between the negative current collector and the second coating; the second coating comprises first silicon carbon, and the sphericity degree of the first silicon carbon is 0.8-1; the silicon content of the first silicon carbon is 30%-60%; the average particle size of the first silicon carbon is R1, and R1 is more than 6 microns and less than or equal to 15 microns; the electrolyte comprises a fluorine-containing solvent and a nitrile compound, the fluorine-containing solvent comprises fluoroethylene carbonate and / or ethyl difluoroacetate, based on the total weight of the electrolyte, the content of the fluorine-containing solvent is w1, and w1 is larger than or equal to 30% and smaller than or equal to 70%; the content of the nitrile compound is w2, and 0.4% < = w2 < = 7%. The lithium ion secondary battery provided by the invention has good cycling stability and dynamic performance at high voltage and high temperature.

A light emitting device for a display including a light emitting structure including a first conductivity type semiconductor layer, an active layer, and a second conductivity type semiconductor layer, and having a side surface exposing the active layer, in which a portion of the second conductivity type semiconductor layer and the active layer along an edge of the light emitting structure is insulative in a thickness direction to define an insulation region, and the insulation region includes implanted ions.

A glassy electroactive prepreg made by generating submicron particles of lithium-ion conducting sulfide glass by providing lithium-ion conducting sulfide glass feedstock material, and subjecting the feedstock material to subzero processing to transform the material into submicron particles can avoid plastic deformation of sulfide glass particles during grinding and produce submicron powders. The prepreg is formed by providing a porous electroactive layer comprising electroactive material, and infiltrating the porous electroactive layer with the submicron particles of lithium-ion conducting sulfide glass. The subzero processing can include cryogenic processing. The prepreg can be used to form glassy embedded electrodes.

The invention discloses a distributed feedback laser and a preparation method thereof, and relates to the field of lasers. The preparation method of the distributed feedback laser comprises the following steps: forming a lower limiting layer, a lower waveguide layer, an active layer, an upper waveguide layer, an upper limiting layer, a grating layer, a grating buried layer, a corrosion stop layer, an InP cladding, a barrier gradient layer, a contact layer and a sacrificial layer on a substrate, wherein the sacrificial layer comprises an InP layer and an InGaAs layer which are stacked in sequence; etching to form a ridge waveguide structure; forming an insulating layer; removing the insulating layer in a preset area on the ridge waveguide structure to expose the sacrificial layer; wherein the side wall of the InGaAs layer is completely exposed, and the side wall of the InP layer is partially exposed; and etching to remove the InGaAs layer and the InP layer to form an upper electrode layer and a lower electrode layer. According to the invention, the reliability and the electro-optical conversion efficiency of the distributed feedback laser can be improved.

The invention provides a battery monomer, a battery device and a power utilization device. The battery monomer comprises an electrode assembly, wherein the electrode assembly comprises a positive plate, a negative plate and an isolating membrane positioned between the positive plate and the negative plate; the negative plate comprises a negative current collector and a negative active layer located on at least one side of the negative current collector, the negative active layer comprises a negative material, the negative material comprises a negative active material, and the negative active material comprises graphite; the positive plate comprises a positive current collector and a positive active layer positioned on at least one side of the positive current collector, the positive active layer comprises a positive material, the positive material comprises a positive active material, and the positive active material comprises lithium iron phosphate and a lithium manganese iron phosphate material; the surface density of the positive electrode active layer is 200 to 370 mg / 1540.25 mm < 2 >; and when the battery monomer is in a 100% SOC state, the compaction density of the positive electrode active layer is 2.27-2.67 g / cm < 3 >. The battery monomer has the advantages of low cost, high energy density and long cycle life.

The invention belongs to the technical field of batteries, and particularly relates to an electrode assembly, a preparation method thereof, a battery and a power utilization device. The electrode assembly comprises a pole piece, the pole piece comprises a current collector, an active layer and a tab, the active layer is arranged on at least one side of the current collector in the thickness direction, and the tab is arranged on one side of the current collector in the height direction; the liquid absorption capacity of the active layer is gradually reduced from one side of the current collector provided with the tab to the other opposite side of the current collector and from the current collector to the direction deviating from the current collector. According to the embodiment of the invention, the electrolyte wettability of the electrode assembly can be effectively improved by carrying out gradient / gradual change design on the liquid absorption capability of the electrode assembly in the specific direction.

The present disclosure provides a semiconductor green laser. The semiconductor green laser, from bottom to top, comprising a substrate, a lower limiting layer, a lower waveguide layer, an active layer, an upper waveguide layer, and an upper limiting layer. The active layer is a quantum well composed of well layers and barrier layers. Each of the well layers includes any one of AlInGaN, AlInN, AlGaN, AlN, InN, InGaN, and GaN, or any combination thereof. Each of the barrier layers includes any one of AlInGaN, AlInN, AlGaN, AlN, InN, InGaN, and GaN, or any combination thereof. An electron effective mass of each of the well layers is less than an electron effective mass of each of the barrier layers. A spontaneous polarization coefficient of each of the well layers is less than a spontaneous polarization coefficient of each of the barrier layers.

The invention relates to a secondary battery, a positive active material, a preparation method of the positive active material, a positive pole piece and an electric device. The secondary battery comprises a positive pole piece, the positive pole piece comprises a positive active layer, and the positive active layer comprises a positive active material; in a particle size distribution curve of primary particles in the positive electrode active material, the half-peak width is marked as WH, and WH is less than or equal to 2.5 microns; the average particle diameter D1 of the primary particles in the positive electrode active material satisfies 1.3 [mu] m < = D1 < = 3 [mu] m. The battery life of the secondary battery at a high voltage is significantly improved.

The invention relates to a non-noble metal-based self-supporting electrode, a preparation method thereof and application of the non-noble metal-based self-supporting electrode in efficient electrolyzed water. The self-supporting electrode comprises a non-noble metal substrate layer, and a transition layer and a catalytic activity layer which are sequentially arranged on the surface of the non-noble metal substrate layer, the transition layer comprises NiFe unit cell nano particles; the catalytic activity layer comprises CoFeLDH, and the CoFeLDH is of a cactus spherical structure formed by a nano needle-shaped array; and a heterojunction interface is arranged between the transition layer containing the NiFe unit cell nanoparticles and the catalytic activity layer containing the CoFeLDH. The catalyst has low oxygen evolution overpotential and has high current density and excellent stability under the working condition, the transition layer is constructed between the catalytic active layer and the foamed nickel substrate, interface contact between the catalytic active layer and the substrate can be optimized, more uniform stress distribution and better interface adhesion can be achieved, charge transfer and mass transfer are enhanced, and the catalytic activity of the catalyst is improved. Therefore, the electrode interface stability is realized.

The invention belongs to the technical field of batteries, and discloses a negative pole piece, a preparation method thereof and a lithium battery. The negative pole piece comprises a current collector and a lithium-loving active layer, the lithium-loving active layer is arranged on at least one side of the current collector, the lithium-loving active layer comprises a lithium-loving active site, and a functional group is grafted on the lithium-loving active site. The functional group comprises at least one of a silicon-containing functional group, a nitrogen-containing functional group, a sulfur-containing functional group and a boron-containing functional group. According to the negative pole piece provided by the invention, the rate capability, the cycling stability and the safety performance of the lithium battery can be improved.

The invention relates to the technical field of batteries, in particular to a copper foil and a preparation method thereof, a current collector, a pole piece and an energy storage device. A connection degree gamma exists between the surface density of the copper foil and the size and arrangement of the through holes, the formula of the connection degree gamma is # imgabs0 #, and the value range of gamma is 1 + / -0.1; the copper foil is prepared through an electrolytic method, and an insulating acid-resistant coating is dispensed on the surface of a cathode of the electrolytic method to form an insulating acid-resistant layer; according to the electrolytic method, an active layer is formed on the surface of an anode by coating a mixed active substance solution and sintering, an inert substance is coated on the surface of the active layer opposite to a point coating position of a cathode to form an inert layer, and the range of the inert layer is smaller than 70% of the area of a pore region. The porous copper foil prepared by the method has a porous structure, the pore size distribution is more uniform, the size is consistent, meanwhile, the parts except the pores are dense copper layers, and the mechanical property of the material is good.

A lithium-ion battery with an enhanced electrode structure and methods for forming such an electrode structure are discussed. The electrode assembly comprises a pre-coat layer compressed with a metal current collector on which a lithium-manganese rich active layer is then deposited and compressed to form the assembly. The disclosed electrode structure reduces internal resistance.

The invention relates to a deep ultraviolet light-emitting diode with a light scattering structure and a preparation method of the deep ultraviolet light-emitting diode. The light-emitting diode comprises a substrate layer, a buffer layer and an N-type semiconductor transmission layer which are sequentially arranged along the epitaxial growth direction of a chip, wherein the shape of the N-type semiconductor transmission layer is divided into an upper part and a lower part, and the multi-quantum well active layer, the P-type semiconductor transmission layer and the P-GaN contact layer sequentially cover the surface of the upper part of the N-type semiconductor transmission layer; a horizontal light scattering structure layer and a vertical light scattering structure are respectively distributed in the upper part and the lower part of the N-type semiconductor transmission layer. According to the invention, the scattering effect of light in the N-type semiconductor transmission layer is improved, the optical waveguide effect of the N-type semiconductor transmission layer is broken, the light is effectively prevented from spreading to the metal n electrode, meanwhile, the light can be scattered, the bottom light emitting efficiency of the deep ultraviolet LED is improved, and the light extraction efficiency is improved.

The invention belongs to the technical field of batteries, and particularly relates to a positive pole piece, a preparation method thereof and a secondary battery. The positive pole piece comprises a positive current collector and a positive active layer which is at least laminated on one surface of the positive current collector, and the positive active layer at least comprises a first active layer, a second active layer and a third active layer which are laminated and attached along the direction far away from the positive current collector; the first active layer, the second active layer and the third active layer comprise ternary active materials, and the elasticity modulus of the ternary active materials in the first active layer, the second active layer and the third active layer is gradually decreased in a gradient mode. The active layer in the positive pole piece adopts a microstructure gradient design, the characteristics of each layer of material are fully considered, the advantages of each layer of material are fully played, the utilization rate of the material performance is maximized, and the positive pole piece has the characteristics of high capacity, high magnification and long circulation.

The invention discloses a component gradient iridium tantalum coating anode and a preparation method thereof, the component gradient iridium tantalum coating anode comprises a titanium-based bottom layer, a middle layer and a surface active layer structure with component gradient, and the middle layer and the active layer are both prepared through a thermal decomposition method. And the intermediate layer is prepared on the titanium substrate and is composed of TiO2 / Ta2O5 mixed oxide. The surface active layer is prepared on the outer side of the middle layer and comprises a plurality of layers of IrO2 / Ta2O5 oxide coatings with different iridium-tantalum proportions. Compared with a traditional uniform coating anode, the prepared component gradient iridium tantalum coating anode can relieve the stress concentration phenomenon and reduce coating cracking, the service life of the anode is remarkably prolonged, and the catalytic activity of the anode is remarkably improved; the modified carbon nano tube is added into the active layer precursor solution, so that the conductivity change caused by component gradient is improved, and the cell voltage of the component gradient iridium tantalum coating anode is effectively reduced; and moreover, the iridium content is lower, and the preparation cost of the electrode is reduced.

The utility model discloses a battery pole piece, a secondary battery and electric equipment. The battery pole piece comprises a current collector, a priming coat arranged on the surface of at least one side of the current collector, and an active layer arranged on the surface of one side, far away from the current collector, of the priming coat, the bottom coating comprises a first conducting layer and a second conducting layer which are arranged in parallel along the length direction of the battery pole piece, the active layer at least partially covers the surface of one side, far away from the current collector, of the first conducting layer, and the surface of one side, far away from the current collector, of the second conducting layer is at least partially not covered by the active layer; the conductivity of the first conductive layer is greater than that of the second conductive layer. The bottom coating is arranged on the current collector of the battery pole piece, and the bottom coating can enable the current collector, which is not covered by the active layer, of the second conductive layer to be locally short-circuited in advance when the battery pole piece is mechanically abused, so that the safety performance of the battery is improved, and the battery pole piece has relatively good conductivity and can improve the charging capability and the energy density of the battery.

A lithium-ion battery with an enhanced electrode structure and methods for forming such an electrode structure. The electrode assembly comprises a pre-coat layer compressed with a metal current collector on which a lithium-manganese rich active layer is then deposited and compressed to form the assembly. The disclosed electrode structure reduces internal resistance.

The invention relates to the technical field of electronic devices, in particular to a synaptic memristive device with a vertical structure and a preparation method and application of the synaptic memristive device. The invention provides a synaptic memristor with a vertical structure. The synaptic memristor structurally comprises a substrate, a bottom electrode, an active layer, an electrolyte layer and a top electrode which are stacked in sequence. Wherein the active layer is a vanadium pentoxide film which is excellent in electrical property and optical response, and the sensitivity and plasticity of the device can be improved; the electrolyte layer adopts polyethylene oxide ionic glue, so that the resistance change characteristic of the active layer can be adjusted, the reaction between the active layer and the top electrode can be prevented, and the service life of the device is prolonged; the bottom electrode is an indium tin oxide thin film, has good compatibility with an active layer interface, can promote oxygen vacancy migration, and optimizes the resistance switching performance. Through mutual coordination of the materials, the device can generate microampere-level current under millivolt-level stimulation, shows high-sensitivity synaptic plasticity, and is suitable for a high-performance neuromorphic computing system.

The invention relates to the technical field of lasers, and discloses a vertical cavity surface emitting laser structure and a preparation method thereof. The preparation method comprises the steps that an epitaxial structure comprising a first reflector layer, a first limiting layer, an active layer, a second limiting layer and a second reflector layer is formed on the surface of one side of a substrate layer, and the epitaxial structure is provided with a light emitting area; an oxidation groove extending into the first reflector layer from the second reflector layer is formed in the light emitting area; forming an oxidation layer with an oxidation hole in the second reflector layer of the light emitting area; ion implantation is carried out on the epitaxial structure to form an ion implantation region and a current implantation region, the current implantation region surrounded by the ion implantation region is located in the light emitting region, and the projection of the current implantation region on the substrate layer covers the projection of the oxidation hole. On the premise that the oxide layer with the oxidation hole is formed, the ion injection region surrounding the current injection region and the oxidation hole is accurately and efficiently controlled to be formed in an ion injection mode, and the reliability, the bandwidth performance and the transmission rate of the laser structure can be effectively improved.

The invention discloses a metal organic framework material, a preparation method thereof and a perovskite battery, and belongs to the technical field of perovskite batteries. The preparation method comprises the following steps: dissolving 1, 2, 4, 5-benzene tetracarboxylic acid in an organic solvent, adding ZrCl4 and a regulator acetic acid, carrying out a heating reaction to obtain a reactant, and carrying out centrifugation, washing and vacuumizing on the reactant to obtain the metal organic framework material. The metal organic framework material has high-density free carboxyl and a nano structure, the high-density free carboxyl can achieve the purpose of adsorbing lithium ions, and the nano structure can obtain better dispersity. When the metal organic framework material is applied to a hole transport layer of a perovskite battery, lithium ions can be well adsorbed, free carboxyl groups can also form chemical bonds with Pb ions of a perovskite active layer, surface defects and unsaturated bonds of the perovskite active layer are reduced, compounding of electrons and holes is prevented, and the performance of the perovskite battery is improved. Therefore, the electrochemical performance and the stability of the perovskite battery are improved.

The invention provides a positive pole piece, a preparation method and a secondary battery. The positive pole piece comprises a current collector and a positive active layer, the positive active layer is arranged on at least one surface of the current collector, and the positive active layer comprises a first positive active layer at least formed on the current collector and a second positive active layer formed on the side, away from the current collector, of the first positive active layer, the first positive electrode active layer comprises lithium iron phosphate particles, and the second positive electrode active layer comprises nickel cobalt lithium manganate particles; or, the first positive electrode active layer comprises nickel cobalt lithium manganate particles, and the second positive electrode active layer comprises lithium iron phosphate particles; the primary average particle size of the lithium iron phosphate particles is 500-3000 nm, and the specific surface area BET of the lithium iron phosphate particles is 3-8 m < 2 > / g. According to the positive pole piece disclosed by the invention, the gas production degree of the upper and lower layers of the lithium iron phosphate particles and the nickel cobalt lithium manganate particles can be reduced, and meanwhile, the positive pole piece also has relatively good gram volume.

The invention belongs to the technical field of batteries, and particularly relates to a pole piece processing system and a pole piece processing method. The pole piece treatment system comprises an electromagnetic induction heating unit, wherein the electromagnetic induction heating unit is used for carrying out electromagnetic induction heating treatment on a pole piece. According to the present invention, the binder floating on the surface of the pole piece can be reduced, and the pores are left in the active layer, such that the porosity of the pole piece is improved, and the infiltration rate of the electrolyte on the pole piece is improved; various burrs and particles on the edge of the active layer can be improved, so that the surface of the active layer becomes smoother, the sharpness of the surface of the pole piece is reduced, and the risk that the pole piece pierces an isolating membrane is reduced. Moreover, the conductive agent in the pole piece tends to be consistent in direction under the influence of magnetic lines generated in the electromagnetic induction process, so that the diaphragm resistance of the pole piece is further reduced.

The invention provides high-activity contact type silver powder for photovoltaic conductive silver paste, a preparation method of the high-activity contact type silver powder and the photovoltaic conductive silver paste, and belongs to the technical field of photovoltaic materials. The high-activity contact type silver powder comprises net-shaped polycrystalline spherical silver powder and an active layer wrapping the surface of the net-shaped polycrystalline spherical silver powder. Wherein the reticular polycrystalline spherical silver powder is a spherical aggregate formed by stacking and self-assembling flaky particles with the particle size of 200-600 nm, and the reticular polycrystalline spherical silver powder is of a porous structure; and the active layer is an organic amine compound. The silver powder disclosed by the invention has good conductivity after being sintered, the adhesive force of a fine grid is relatively high, and the assembly has relatively high power output.

The invention discloses a perovskite active layer film, a preparation method thereof and a perovskite solar cell, and belongs to the field of photovoltaic technology. The preparation method of the perovskite active layer film comprises the following steps: S1, mixing a perovskite active material and a solvent to obtain a perovskite precursor solution; the solvent comprises a first solvent which is a mixed solvent of N-methyl-2-pyrrolidone, dimethyl sulfoxide and N, N-dimethylformamide, and the first solvent, the dimethyl sulfoxide and the N, N-dimethylformamide are sequentially mixed according to the volume ratio of (1-10): (1-8): 100; and S2, coating the perovskite precursor solution on the surface of a substrate, carrying out vacuum flash evaporation, and then carrying out heating treatment to obtain the perovskite active layer film. The DMSO solvent in a specific proportion is introduced into the precursor solvent, and the proportion of the three solvents is controlled, so that growth of crystal grains in the perovskite active layer thin film can be obviously promoted, the perovskite crystal grain size and the crystal grain quality are improved, and the photoelectric conversion efficiency of the perovskite solar cell is further improved.

A method of manufacturing a light emitting device package and a method of manufacturing a display panel, the method of manufacturing a light emitting device package including forming a semiconductor laminate on a substrate such that the semiconductor laminate has a first conductive semiconductor layer, an active layer, and a second conductive semiconductor layer; separating the semiconductor laminate into semiconductor light emitters, separated from each other, by forming a trench having a predetermined depth in the substrate by etching through the semiconductor laminate in a direction of the first surface of the substrate; forming a molding that fills the trench and insulates the semiconductor light emitters from each other by applying a flexible insulating material to cover the semiconductor light emitters; forming grooves separated from each other by the molding and overlying to the semiconductor light emitters, respectively, by removing the substrate; and forming wavelength converters in the grooves.

The invention relates to the technical field of semiconductors, and provides a semiconductor device and a manufacturing method thereof. The method is used for solving the technical problem of how to reduce bit line manufacturing difficulty. The manufacturing method comprises the following steps: providing a substrate, wherein the substrate comprises a plurality of active layers and accommodating spaces for separating the active layers; the active layer comprises a first part and a second part; the size of the second part in the first direction is gradually reduced along the direction from the first part to the second part; forming a filling structure surrounding the first part and a first sacrificial layer covering the filling structure in the accommodating space; the first sacrificial layer protrudes from the surface of the filling structure; the rest accommodating space exposes a plurality of second parts arranged along the second direction; and forming a bit line structure in the remaining accommodating space. Therefore, a self-aligned bit line can be formed, a high-difficulty and high-aspect-ratio bit line etching process is avoided, and the bit line manufacturing difficulty is reduced.