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49 results about "High energy" patented technology

LDMOS (Laterally Diffused Metal Oxide Semiconductor) device with transverse composite buffer layer structure

InactiveCN102184963AImprove performanceImprove pressure resistanceSemiconductor devicesHigh energyIon implantation
The invention relates to an LDMOS (Laterally Diffused Metal Oxide Semiconductor) device with a transverse composite buffer layer structure, belonging to the technical field of power semiconductors. In the invention, the transverse composite buffer layer structure is introduced into an electric conducting channel region in a drift region of a conventional LDMOS device; the transverse composite buffer layer structure consists of an N-type doped pillar region and a P-type doped pillar region which are transversely arrayed at intervals; and the N-type doped pillar region and the P-type doped pillar region are parallel to the current direction between a source electrode and a drain electrode of the whole device. In the invention, the transverse composite buffer layer structure is adopted to ensure that the pressure-resistant performance of the device can be improved and the specific on-resistance of the device is reduced; when the device is manufactured, a plurality of high-energy ion implantations and knot pushing are adopted to respectively form the N-type doped pillar region and the P-type doped pillar region; the composite buffer layer is of a transverse structure; and therefore, the N-type doped pillar region and the P-type doped pillar region with better process consistency can be obtained, the problem that the concentration of a conducting layer among multilayer doped buried layers in a longitudinal composite buffer layer structure is reduced is not caused and the LDMOS device with more excellent performances is obtained.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA

Neuromorphic calculation circuit based on multi-bit parallel binary synaptic array

ActiveCN110378475AReduce power consumptionReduce areaAnalogue/digital conversionElectric signal transmission systemsIntegratorHigh energy
The invention discloses a neuromorphic calculation circuit based on a multi-bit parallel binary synapse array. The neuromorphic calculation circuit comprises a neural axon module, the multi-bit parallel binary RRAM synapse array, a time division multiplexer, a plurality of integrators and a shared successive approximation analog-to-digital converter, wherein the neural axon module comprises two basic units, namely a time sequence scheduler and an adder, and the time sequence scheduler is used for arranging the time sequence of signals, so that input signals are sequentially input into a multi-bit parallel binary RRAM synapse array by adopting a dendritic priority strategy; the adder is used for expanding the array scale, and when the configured neural network input layer is greater than the input of one RRAM array, the adder is used for adding the calculation results of the plurality of arrays to obtain the output of the network layer. Compared with the current system, the method has the advantages of high precision and low power consumption, can be configured into most deep neural network applications, and is particularly suitable for being deployed in edge computing equipment with high energy consumption requirements.
Owner:ZHEJIANG UNIV

Porous graphene composite material supported by micropore and preparation method of material

ActiveCN103895278AAdjustable hole densityLayered productsGraphenePorous grapheneFiltration
The invention discloses a preparation method of a graphene nano-hole which is supported by a micropore, belonging to the fields of application of heavy ion beams and processing of films. A porous graphene composite material supported by the micropore is mainly characterized by comprising monolayer graphene, wherein the monolayer graphene is arranged on a polymer film; a nanoscale hole is formed in the graphene, overlapped and communicated with a cone-shaped hole of the polymer film. Through the preparation method, a graphene/polymer film composite structure is irradiated by using high-energy heavy ions; a hole with the diameter being several nanometers is formed in the graphene by using irradiation damage effect of the heavy ions; meanwhile, a columnar damage area is formed in the polymer film; then an irradiated area of a polymer is etched to form a cone-shaped nano-hole by using a chemical etching method; since the position of the graphene hole is overlapped and communicated with the position of the cone-shaped hole of the polymer, the graphene nano-hole which is supported by the micropore can be obtained. Due to the support effect of the polymer micropore, the graphene nano-hole is wide in application prospet in rectification of the ions, filtration and screening of the ions and detection of biological molecules.
Owner:INST OF MODERN PHYSICS CHINESE ACADEMY OF SCI

Layered lithium-rich manganese oxide positive electrode material suppressing capacity/voltage attenuation during circulation process effectively and preparation method therefor and application thereof

InactiveCN107069026AIncrease energy densityImprove cycle stabilityCell electrodesSecondary cellsCyclic processHigh energy
The invention relates to a layered lithium-rich manganese oxide positive electrode material suppressing capacity/voltage attenuation during a circulation process effectively and a preparation method therefor and an application thereof. The preparation method of the layered lithium-rich manganese oxide positive electrode material comprises the following steps of: during a preparation process of a precursor of the layered lithium-rich manganese oxide positive electrode material of a lithium ion battery, adding the raw material precursor of LiNiO2; and performing high temperature heat treatment to obtain a layered lithium-rich manganese oxide composite positive electrode material. The Ni element in the layered lithium-rich manganese oxide positive electrode material can effectively suppress the migration of transitional metal elements during the circulation of the layered lithium-rich manganese positive electrode material and suppress the formation of a spinel phase, thereby effectively suppressing the capacity/voltage attenuation during the circulation process. The positive electrode and the lithium ion battery that use the material belong to the technical field of energy materials and energy conversion. The material used as the positive electrode material of the lithium ion battery has the advantages of high energy density, cycling stability, and good rate capability.
Owner:ZHEJIANG UNIV

Core cell structure, core with porous structure and sandwich energy absorption structure

The invention discloses a core cell structure. The core cell structure comprises an outer layer and an inner layer, wherein both the outer layer and the inner layer are three-period minimal curved surfaces; a cavity is formed between the outer layer and the inner layer; a connecting plate for connecting the outer layer with the inner layer is arranged in the cavity; an upper opening and a lower opening which extend to the outside of the cavity and are opposite to each other are formed in each of the outer layer and the inner layer; and a plurality of lateral openings which extend to the outside of the cavity are formed in the peripheral side of each of the outer layer and the inner layer. The invention also discloses a core with a porous structure. The core with the porous structure comprises the core cell structures, wherein the adjacent core cell structures are in butt joint with each other through the corresponding opening, and the outer layers and the inner layers of the core cellstructures form a continuous curved surface. The invention also discloses a sandwich energy absorption structure which comprises a first interlayer, a second interlayer and the core with the porous structure, and the core with the porous structure is clamped between the first interlayer and the second interlayer. The core cell structure, the core with the porous structure and the sandwich energy absorption structure have the advantages of simple structure, high energy absorption efficiency and the like.
Owner:HUNAN UNIV

High and low temperature flexible fibrous supercapacitor and preparation method and application thereof

InactiveCN108447701AEasy to operateGood flexibilityHybrid capacitor electrodesHybrid/EDL manufactureFiberElectrolytic agent
The invention provides a preparation method of a high and low temperature flexible fibrous supercapacitor, two conductive polymer composite fiber electrodes are parallelly arranged at a certain interval, two ends are fixed on a PET film by use of a conductive adhesive tape and conductive silver adhesive, surfaces are coated with aqueous gel electrolytes, and thus a high and low temperature flexible fibrous supercapacitor integrated device is prepared. The invention also provides a high and low temperature flexible fibrous supercapacitor and application thereof. The high and low temperature flexible fibrous supercapacitor still maintains high energy density in a wide-temperature range environment from 60 to 100 DEG C, and has ultrahigh safety performance, and the performance is not affectedwhen the supercapacitor is bent at an arbitrary angle.
Owner:INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS

High-precision AOA clustering and locating method

The invention relates to a high-precision AOA clustering and locating method. According to the method, a clustering algorithm is used for clustering node groups, a cluster head is selected from clusters, a newly-added node automatically selects a nearest cluster to join, and angle measurement is conducted in each node in the signal emitting direction; after the last step is completed, the distance between every two nodes is calculated according to an AOA ranging algorithm, then relative coordinates are obtained and sent to a total cluster head from each cluster head to be gathered, and true coordinates are worked out. By means of the high-precision AOA clustering and locating method, each node of the clustering algorithm has self-detecting performance, and the coordinates of each node relative to the corresponding cluster head are worked out though a coordinate algorithm; clustering is only conducted once at the beginning, when no cluster head exists in each cluster or energy is low in each cluster, the cluster head is selected again, information is sent to the total cluster later, and a range-based clustering and locating algorithm is achieved. According to experimental results, the algorithm maintains the advantages of fast deployment, high energy efficiency and high precision, and the algorithm is suitable for wireless networks which are compactly deployed.
Owner:GUANGZHOU UNIVERSITY

All-solid-state laser capable of obtaining single-frequency output at wavelength of 558nm

InactiveCN105390929AHigh output power/energyReduce noiseActive medium materialLow noiseHigh energy
The invention discloses an all-solid-state laser capable of obtaining single-frequency output at a wavelength of 558nm. The all-solid-state laser comprises a pumping source system and a Z type resonator device, wherein the pumping source system comprises a laser diode LD, an optical fiber and a focusing coupling lens system which are arranged on an optical path in sequence; the Z type resonator device comprises a rear mirror, a concave folding mirror, a yellow light output mirror and a total reflective mirror which are arranged in a Z type cavity in sequence; wave plates and a laser gain medium are arranged between the rear mirror and the concave folding mirror; a birefringent filter is arranged between the concave folding mirror and the yellow light output mirror; and a frequency doubling crystal is arranged between the yellow light output mirror and the total reflective mirror. According to the all-solid-state laser, the high power density of fundamental light in the cavity is fully utilized and the frequency doubling efficiency is improved by adopting the Z type cavity, so that the yellow light laser output at single longitudinal mode, low noise, high power and high energy is realized, and the defects of the laser in the prior art are successfully solved.
Owner:NANJING INST OF ADVANCED LASER TECH

LED (Light Emitting Diode) lamp capable of purifying air and generating vitamin negative oxygen ions

The invention discloses an LED (Light Emitting Diode) lamp capable of purifying air and generating vitamin negative oxygen ions. The LED lamp comprises a negative oxygen ion releasing port, a negative oxygen ion generator and an LED lamp slice mounting plate, wherein the negative oxygen ion generator is arranged below the negative oxygen ion releasing port; a mounting lamp cap is arranged below the negative oxygen ion generator; a lamp socket thread is arranged on the mounting lamp cap; a lamp body housing is arranged above the mounting lamp cap; high energy cooling fins are arranged at one side of the lamp body housing; a glass outer cover is arranged above the high energy cooling fins; the LED lamp slice mounting plate is arranged at the inner side of the glass outer cover; and an LED luminous chip is arranged on the LED lamp slice mounting plate. As the adopted negative oxygen ion generator can rapidly generate the vitamin negative oxygen ions, smoke prevention and dust control, and disinfection and sterilization are realized. As the LED lamp slice is used as a light source, the LED lamp is energy-saving, high-efficiency, long in service life, environment-friendly and reliable.
Owner:俞勤

Preparation method of thick-film lithium battery and thick-film lithium battery

InactiveCN113013374AHigh degree of bindingReduce the ratioElectrode rolling/calenderingFinal product manufactureInternal resistanceHigh energy
The invention belongs to the technical field of lithium ion batteries, and particularly relates to a preparation method of a thick-film lithium battery and the prepared lithium ion battery. The preparation process of the lithium ion battery comprises the following steps: covering a current collector with positive and negative electrode materials in a coating manner, then carrying out rolling treatment, combining a diaphragm with the positive and negative electrodes into a complete battery cell in a winding or lamination manner, and packaging the battery cell to obtain the thick-film lithium battery. The positive and negative current collectors adopt a latticed structure, so that the electron transmission rate in the electrode is improved, the internal resistance of the battery is greatly reduced, and meanwhile, the overall cost of the battery is further reduced and the energy density is improved by adopting the high-coating-amount electrode. The preparation process is simple, the repeatability is good, and large-scale production can be realized.
Owner:ZHEJIANG GODSEND POWER TECH

Method for preparing lithium battery positive electrode material with nickel-based composite oxide as inner core

The invention relates to the technical field of lithium batteries, in particular to a method for preparing a lithium battery positive electrode material with nickel-based composite oxide as an inner core. The preparation method comprises the following steps: S1, raw material drying: putting X into crushing and drying equipment, adding a certain amount of crushing medium and dispersing agent into the equipment, crushing X to a nanoscale, and drying to obtain a semi-finished product Q1; S2, preliminary mixing: weighing and preparing required materials such as a lithium source, a nickel source, acobalt source and an M source according to a molar ratio of (1.0-1.2): (0-1.0): (0-1.0): (0-1.0); S3, crushing and mixing: putting the materials weighed and prepared in the step S2 into crushing, mixing and drying integrated equipment, adding a certain amount of a mixed medium and a dispersing agent into the equipment, uniformly mixing the materials, crushing the materials to a sub-micron order,and drying the materials. The preparation method has the beneficial effects that the process scheme and the preparation method are simple, large-scale production is easy, the material cost is moderate, the positive electrode of the lithium ion battery has high energy density and good thermal stability, and the safety of the lithium battery is improved.
Owner:江西智锂科技股份有限公司

Liquid gas silicon dioxide amine electrolyte for storage battery

InactiveCN102891338AImprove discharge performanceHigh energy ratioLead-acid accumulatorsGas phaseSilicic acid
The invention provides a liquid gas silicon dioxide amine electrolyte for a storage battery; the liquid gas silicon dioxide amine electrolyte comprises gas silicon dioxide, ionized water, sulfuric acid (analytically pure), polyacrylamide, phosphoric acid, industrial salt and potassium sulfate, wherein the liquid gas silicon dioxide amine electrolyte is obtained by adding the sulfuric acid to an ultrasonic oscillation ion high rotation speed machine, stirring the sulfuric acid, adding pure water to the sulfuric acid, adding the polyacrylamide, the phosphoric acid and the industrial salt to the ultrasonic oscillation ion high rotation speed machine according to a proportion, taking the gas silicon dioxide and adding the gas silicon dioxide to the ultrasonic oscillation ion high rotation speed machine. The prepared storage battery uses the gas silicon dioxide amine electrolyte; except for the change of the mixing ratio of the electrolyte, the gas silicon dioxide amine electrolyte is turned into a liquid electrolyte and obtains good fluidity as an ion oscillation high rotation speed machine process is particularly adopted; a problem of high viscosity of silicic acid electrolyte is overcome; and compared with the capacity of a common battery, the storage battery has the advantage that very high energy ratio is increased. The liquid gas silicon dioxide amine electrolyte for the storage battery, provided by the invention, obtains extreme cold weather resistance and high temperature resistance and can be normally used at a temperature of (-60)-(+60) DEG C; the discharging capacity is enhanced and is enhanced from the general 5-10 C to more than 40 C.
Owner:YANCHENG XINYUE ENERGY

Method for recycling waste heat of second-stage reactor outlet materials of pyrolysis gasoline hydrogenation unit

ActiveCN104629797AReduce consumptionImprove technical effectTreatment with hydrotreatment processesReboilerHigh energy
The invention relates to a method for recycling waste heat of the second-stage reactor outlet materials of a pyrolysis gasoline hydrogenation unit and mainly solves the problem of high energy consumption in the prior art. The method for recycling waste heat of the second-stage reactor outlet materials of the pyrolysis gasoline hydrogenation unit comprises the following steps: putting the second-stage reactor outlet pyrolysis gasoline material of the pyrolysis gasoline hydrogenation unit (7) into a carbon 5 decarbonizing tower (1), discharging the separated carbon 5 light components (1) through a tower top, discharging one part of the heavy components (11) from a tower kettle of carbon 5 decarbonizing tower (1) to a downstream carbon 9 decarbonizing tower, after separating the carbon 9 heavy components, through the one stage hydrogenation and the second stage hydrogenation, after the second-stage hydrogenated outlet materials exchanging heat with the second-stage hydrogenated inlet materials, one part of the heavy components providing a heat source for a reboiler (3) in the centre of the carbon 5 decarbonizing tower and one part separating a second-stage after-condenser (6). The technical solution of the method well solves the problems and can be used for recycling waste heat of the second-stage reactor outlet materials of the pyrolysis gasoline hydrogenation unit.
Owner:SINOPEC SHANGHAI ENG +1

Metal surface micro-patterning method

ActiveCN109175708AAvoid rapid degradationImprove heat dissipationLaser beam welding apparatusMicro nanoLiquid medium
The invention discloses a metal surface micro-patterning method. A transparent liquid medium not reacted with metal is adopted as protecting liquid; and in particular, when sodium hydroxide solution is adopted, the quick degradation of magnesium in water is prevented, and the machining of a magnesium alloy material by femtosecond laser filamentation in water is realized. When a flowing liquid filmis adopted, the heat dissipation condition of the periphery of a machined part can be prominently improved; and meanwhile, bubbles generated in machining are taken away to prevent accumulation of chips, so that the self-cleaning in the machining process is realized. In addition, compared with high-energy femtosecond laser filamentation in air, on the basis of guaranteeing the machining quality ofa metal surface micro-nano structure, the machining precision can be prominently improved to reach about 10 microns, and meanwhile, the production equipment cost is reduced. More importantly, an active oxidation atmosphere formed by femtosecond laser in the air is prevented, and oxides in machined products are prominently reduced, so that the metal surface and the microcosmic substance forms in machined grooves are not changed to the greatest extent.
Owner:BEIHANG UNIV
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