115results about How to "Uniform phase" patented technology

This invention relates to a method for preparing olivine-type phosphate-series lithium ion battery anode material. The method comprises: mixing one or more of ferrous salt solution, cobalt salt solution and manganese salt solution with oxalic acid or oxalate (precipitating agent) aqueous solution to obtain composite oxalate precursor, uniformly mixing with lithium source and phosphorus source by ball milling, and reacting in inert or weak-reductive atmosphere to obtain olivine-type phosphate-series lithium ion battery anode material. The method utilizes co-precipitation method for metal ion doping, and realizes molecular level uniform mixing among different ions. The obtained olivine-type phosphate-series lithium ion battery anode material has uniform chemical and physical compositions. The average particle size can be controlled within 0.3-10 mu.m. The first charge and discharge cycle specific capacity can reach 150 mAh/g at 0.1 C rate and room temperature. The livine-type phosphate-series lithium ion battery anode material has such advantages as high cycle performance and high charge/discharge performance.

The invention relates to a carbon coated lithium iron phosphate microwave-synthesizing method, relating to the preparation of anode material of a Li-ion battery. The invention weighs lithium carbonate, iron oxalate and ammonium diacid phosphate, proper amount of heat conduction agent and organic matter in chemical gauging ratio, using anhydrous alcohol as dispersant to fully grind and mix them, drying and pressing the mixture into blocks, placing the blocks in a pot holding activated carbon, and placing the pot in microwave field for irradiative heating so as to be able to make uniform- phase carbon coated lithium iron phosphate. The invention can realize carbon coating of lithium iron phosphate and more rapidly and uniformly heat the raw materials, beneficial to uniform and rapid reaction of massive raw materials. The method can shorten production cycle and reduce energy consumption.

The invention discloses nano indium tin oxide powder, which comprises an indium compound and a tin compound, wherein a mass ratio of indium oxide to tin oxide is 9:1; and the nano indium tin oxide powder is in an irregular elliptical spherical shape. The ITO nano powder obtained by a method for preparing the ITO nano powder is uniform in grain diameters and high in dispersibility, and the grain diameters are about 60 nanometers.

Belonging to the technical field of preparation and application of electronic ceramics, the invention relates to a preparation method of a perovskite-like varistor ceramic material CaCu3Ti4O12 (CCTO) with a high dielectric constant. With nitrates of Cu and Ca as well as Ti (OC4H9)4 as starting materials, the method of the invention combines a hydrothermal method for preparing nanometer CCTO powder so as to prepare high performance CCTO varistor ceramics, thus realizing the purposes of lowering temperature, and improving varistor as well as dielectric properties.

The invention provides a preparation method of a NiCo2S4 nano-material. The preparation method comprises the following steps: firstly, mixing a soluble cobalt source, a soluble nickle source, urine and a solvent to obtain a reaction precursor solution; then placing a conductive substrate in the obtained reaction precursor solution, performing reaction under the microwave action, and then performing heat treatment to obtain a NiCo2O4 nanosheet; and enabling reaction between the obtained NiCo2O4 nanosheet and a sulfide to obtain the NiCo2S4 nano-material. The preparation method is simple in process, low in cost and energy consumption, short in reaction time, and favorable for large-scale industrial expansion; the NiCo2S4 semiconductor nanosheet is uniform in shape and large in specific area; controllable growth of a nano-structure thin film can be realized, so that full contact with an electrolyte is realized; quick ion diffusion and effective charge transmission are guaranteed; the NiCo2S4 nano-materia can be directly used as a counter electrode of a dye-sensitized solar cell and has a huge application prospect.

Methods for generating weights for the antenna elements (110) in an AESA antenna (100). In one embodiment, transmitting weights are selected to have unit amplitude and quadratic phase, and receiving weights are selected to provide a two-way antenna pattern which is uniform over a useful portion (300) of the main lobe, and decreases rapidly outside of the uniform portion. In another embodiment the transmitting weights have unit amplitude over a central portion of the array and the receiving weights are selected to provide a two-way antenna pattern which is uniform over a useful portion (300) of the main lobe.

The invention provides a method for prolonging the service life of a CdS nano photocatalyst. The method is characterized by depositing a layer of 1-10 A as protective layer (TiO2, ZnO, Al2O3, AZO, and the like) on the surface of a CdS nano particle synthesized hydrothermally by virtue of an atomic layer deposition technique. On the premise of guaranteeing relatively a high catalytic efficiency, light corrosion occurrence is effectively reduced, and therefore the service life CdS nano photocatalyst is prolonged from 1 hour to over 18 hour. The preparation method effectively reduces the harm to the light CdS nano particle and prolongs the catalyst life of the CdS nano particle.

The invention discloses a novel planar Magic-T based on a folded substrate integrated waveguide. The folded substrate integrated waveguide is used to realize an H-surface power divider, a T-shaped junction of a conventional trough line excitation substrate integrated waveguide, and the planar Magic-T is realized. The leakage loss is less, the power capacity is higher, and the bandwidth is larger. By means of the open-circuit and short-circuit characteristics of the folded substrate integrated waveguide and the conventional substrate integrated waveguide, a relatively high isolation degree between two input ports is realized, and the unbalance degrees of amplitudes and phases between two output ports are very small, so that the performance of the Magic-T is improved, the design process is simplified, and the Magic-T is easy to apply to a higher frequency band. The overlapping of T-shaped junction of an H-surface and an E surface enables a high integration level of the structure, and the requirements of planarization, miniaturization and high performance in modern radio communication are met.

The invention discloses a Cu2O@Cu/AgBr composite light catalyst and a preparation method thereof. The preparation method of the Cu2O@Cu/AgBr composite light catalyst is characterized by comprising the following steps that 1, firstly, a liquid phase reduction method is adopted for preparing Cu2O@Cu core-shell structure nanoparticles, wherein the mass percentage of Cu in the Cu2O@Cu core-shell structure nanoparticles is 0.5-5%; 2, a liquid-phase precipitation method is adopted for precipitating AgBr on the surfaces of the Cu2O@Cu core-shell structure nanoparticles obtained in the step 1, and the Cu2O@Cu/AgBr composite light catalyst is obtained, wherein the molar ratio of an element Ag to an element Cu is 1: (0.1-20).

The invention relates to a solvothermal method for preparing a three-dimensional nanometer layered structure WS2 and an electrochemical application thereof. The method comprises the following steps: adding tungstic acid and S powder into a mixed solution of octylamine and n-hexyl alcohol, and rapidly stirring at room temperature, so that the components are fully mixed; transferring the fully stirred mixed solution into a hydro-thermal synthesis reactor, reacting under the constant temperature of 180-240 DEG C for 24 hours, filtering and collecting the reaction solution after the reaction solution is cooled to room temperature, cleaning by using ethanol and deionized water, drying, and performing heat treatment on the obtained solid products in a nitrogen atmosphere under the condition of 400-750 DEG C for 2 hours, thereby obtaining the three-dimensional nanometer layered structure WS2. The three-dimensional nanometer layered structure WS2 is applied to lithium ion battery and electro-catalysis hydrogen evolution reaction, good electrochemical performance can be obtained under the condition that mixing and coating are absent, and when the current density is 20mA/g, the discharge capacity of the lithium battery is 468mAh/g; and moreover, a hydrogen evolution initial potential more correct than WS2 in the prior art is obtained under the scanning speed of 10mV/s.

The invention discloses a hydraulic thrust sludge high-pressure plunger pump. The hydraulic thrust sludge high-pressure plunger pump comprises a plurality of plunger assemblies and an electric control system used for controlling the multiple plunger assemblies to act independently or act jointly. Each plunger assembly comprises a single pump hydraulic end, a power pump set and an oil tank assembly which are connected through a hydraulic pipeline, wherein the single pump hydraulic end comprises a feeding and discharging unit, a pump body assembly, a main plunger, a main plunger thrust oil cylinder, a secondary plunger thrust oil cylinder and a main control valve set; the sludge feeding and discharging unit comprises a feeding inlet, a sludge inlet assembly, a feeding valve assembly, a discharging outlet and a one-way valve assembly; the secondary plunger thrust oil cylinder is connected with the sludge inlet assembly through the feeding valve assembly; the main plunger thrust oil cylinder is connected with the pump body assembly through the main plunger; the pump body assembly communicates with the feeding inlet through the sludge inlet assembly and communicates with the discharging outlet through the one-way valve assembly; the main control valve set comprises a proportional valve and an electromagnetic reversing valve arranged on an oil inlet and outlet passage of the main plunger thrust oil cylinder and the secondary plunger thrust oil cylinder; and the oil tank assembly is connected with the power pump set.

The invention relates to a method for preparing a giant dielectric constant type perovskite CaCu3Ti4O12 ceramic material and belongs to the field of preparation and technical application of electronic ceramics. The invention provides a method for preparing nano CaCu3Ti4O12 ceramic powder based on an improved sol-gel process-reflux distillation method; the defects that the traditional sol-gel method is large in solvent amount and long in gelatinization time and the like are overcome, the reaction period is greatly shortened, and high-dielectric property perovskite type nano CaCu3Ti4O12 powder and ceramics with a pure-phase perovskite structure and uniform particle size are obtained.

The invention discloses a method for preparing lithium iron phosphate-doped nano powder for a lithium ion battery. The method comprises the following steps of: synthesizing precursor solution by using phosphorous source compounds, ferrous source compounds and lithium source compounds; preparing source-doped precursor liquid; mixing the source-doped precursor liquid and the precursor solution according to proportion; placing the mixture into a hydro-thermal reaction kettle, reacting at the temperature of between 100 and 220 DEG C under a nitrogen-containing and pressing environment; after the reaction, naturally cooling and taking the mixture out; and performing centrifugal washing on the mixture and drying the mixture to obtain the lithium iron phosphate-doped nano powder. In the method, the lithium iron phosphate-doped nano powder for the lithium ion battery is prepared by a hydrothermal method and by performing a chemical reaction in fluid such as high-temperature and high-pressure aqueous solution or water vapor and the like. Compared with a solid phase method and a sol-gel method, the method has the advantages of simple operation, uniform phase and small grain diameter.

The invention relates to a frequency response balancer by using light carrier Brillouin treatment. An existing phase modulation link can not acquire flat frequency response. In the balancer, a laser device is connected with an input end of a photo-coupler; an output end of the photo-coupler is optically connected with one end of a first polarization controller (PC); the other end of the first PC is optically connected with an optical input end of an electro-optical phase modulator; an output end of the electro-optical phase modulator is optically connected with one end of a single mode fiber (SMF); the other end of the SMF is optically connected with an interface 2 of a circulator; the other output end of the photo-coupler is optically connected with one end of a second PC; the other end of the second PC is optically connected with an optical input end of a modulator; an output end of the modulator is optically connected with an input end of an optical parametric erbium amplifier; an output end of the optical parametric erbium amplifier is optically connected with an interface 1 of the circulator; and an interface 3 of the circulator is optically connected with an input end of an optical high-speed detector. The frequency response balancer is used to realize effective transformation from the phase to the strength, and acquire the adjustable frequency response balance of bandwidth.

The invention provides chromic oxide and a preparation method thereof. The method comprises the following steps: feeding a hexavalent chromium salt solution containing seed crystal into a reaction device, feeding protective gas, sealing the device and rising the temperature, and continuously feeding reducing gas to perform reaction after target temperature is achieved, so as to obtain mixed slurry; performing solid-liquid separation on the obtained mixed slurry, and performing calcination on obtained hydroxyl chromic oxide powder, so as to obtain chromic oxide. The method has the advantages that hexavalent chromium salt is adopted to prepare chromic oxide through a hydrothermal reduction method, the reduction reaction rate is improved through adding of the seed crystal, and regulation of the reducing gas and reaction conditions, the controllability of a reaction process is enhanced, the percent reduction can reach greater than 99.2 percent, reduction products are uniform in phase, sizedistribution is narrow, and the quality of obtained chromic oxide is high and can reach the standard of pigment grade chromic oxide; the method is short in flow, and low in energy consumption and cost, does not produce pollutant emission, belongs to a clean production technology, and has significant economic benefit.

The invention relates to a hydrothermal synthesis method for a metal organic frame with photocatalytic performance, and belongs to the technical field of preparation of environmental-friendly materials. The hydrothermal synthesis method comprises the following steps: according to the substance ratio of 1:1:4, respectively weighing didpyridine[3,2-a:2',3'-c]henazine-2-dicarboxylic acid, phosphotungstic acid and chromic chloride hexahydrate solids; transferring three solids in the step (A) into a flask, adding deionized water for dissolving, and agitating for ten minutes so as to be fully mixed; transferring the mixture in the step (B) into a reaction kettle for performing hydrothermal reaction; after the hydrothermal reaction is completed, naturally cooling to room temperature, washing with deionized water, and drying to obtain organic columnar crystals, namely photocatalyst [Co2(HDPPZC)4(Cl)2(H2O)2](PW<12>O<40>).7H2O. According to the hydrothermal synthesis method, a well crystallized product can be directly obtained by adopting intermediate-temperature liquid phase control, high-temperature calcination and crystallization are not required, and the energy consumption is relatively low.

The invention discloses a super-soft X/gamma ray protective material which is characterized by comprising the following components: 5-97 wt % of a crystallized X/gamma ray absorption functional body,2.8-93 wt % of a matrix component and 0.2-2 wt % of an assistant; the crystallized X/gamma ray absorption functional body is a crystallization compound with a median particle size D50 of more than 10microns. The anti-radiation product disclosed by the invention has the advantages of multiple breakthrough in flexibility, hardness, bending rigidity, tensile strength and tearing strength, so that not only can the protection performance of X/gamma rays be met, but also the performance requirements of radiation protection materials can be met, the radiation absorption function body is subjected tocontrollable production, and the product protects the human body from being irradiated by the X/gamma rays, the working life is convenient to implement, the production is easy, the product is environment-friendly, and the social significance is not measurable.