374results about How to "Improve formation efficiency" patented technology

Metal organic chemical vapor deposition equipment is metal organic chemical vapor deposition equipment for forming a film on a substrate by using a reactant gas, and includes a susceptor heating the substrate and having a holding surface for holding the substrate, and a flow channel for introducing the reactant gas to the substrate. The susceptor is rotatable with the holding surface kept facing an inner portion of the flow channel, and a height of the flow channel along a flow direction of the reactant gas is kept constant from a position to a position, and is monotonically decreased from the position to the downstream side. It is thereby possible to improve film formation efficiency while allowing the formed film to have a uniform thickness.

The invention discloses a lithium battery information fixture, which includes two relatively arranged supporting seats, a plurality of guide pillars arranged between the supporting seats, a compressing assembly arranged on the guide pillars, and a pushing mechanism arranged on the supporting seats driving the compression assemblies to slide along the guide pillars. A plurality of forming laminate assemblies are arranged between the two supporting seats, PCB board assemblies bonding to the electrode ears of the lithium batteries are arranged on the forming laminate assemblies, and adjusting laminates are arranged between the two supporting seats to adjust upper and lower position of the forming laminate assemblies and the PCB board assemblies. When the lithium batteries are placed between the adjacent laminates, the center position of the lithium batteries and the PCB board assemblies can be adjusted, thus realizing the formation of lithium batteries with different polar ear positions.

The invention relates to a bio-organic compound fertilizer, which comprises the following components in part by weight: 10 to 30 parts of organic matter, 2 to 10 parts of compound microbial inoculants, 5 to 20 parts of humic acid, 5 to 20 parts of amino acid, 4 to 10 parts of chitin, 1 to 5 parts of polypeptide, 530 parts of nitrogen, phosphorus and potassium, 5 to 10 parts of secondary and trace elements, 5 to 15 parts of algae fertilizer, 5 to 10 parts of zeolite powder and 1 to 5 parts of synergistic agent. Through the scientific and rational formula, the bio-organic compound fertilizer achieves nutritive equilibrium and can satisfy the need of crop growth in nutrient. The microbial inoculants are added to quickly degrade natural macromolecular organic compounds into the organic fertilizer and decompose organic pollutants, which effectively improves the capacity of crops in the absorption of nutrient components, reduces the waste of the fertilizer and reduces the damage of the chemical fertilizer to soil to further achieve the nutritive equilibrium, satisfy the need of the crop growth in the nutrient, achieve the aims of low investment and high output value, improve the quality of the crops and improve the economic benefit brought by the crops.

A hologram recording medium has a transparent substrate having an incidence surface, on which a write beam and a reference beam are made incident, and a servo surface opposite to the incidence surface, the servo surface including a header section and a data section, a reflecting layer formed on the servo surface of the transparent substrate, and a hologram recording layer provided on the incidence surface of the transparent substrate, the servo surface having intermittent tracking grooves in the data section except for recording positions, and a width of the tracking grooves being set at a value to less than an e−2 diameter of the reference beam.

A negative electrode for a rechargeable lithium battery and a rechargeable lithium battery including the same are provided. The negative electrode for a rechargeable lithium battery includes a current collector, and a negative active material layer on the current collector. The negative active material layer includes an interpenetrating network network, and a negative active material in the interpenetrating network network. The interpenetrating network is formed by cross-linking a first polymer having a hydroxyl or amine group and a second polymer having a carboxylic acid group. The negative electrode for a rechargeable lithium battery minimizes volume expansion and imparts good cycle-life characteristics and initial formation efficiency.

A negative electrode for a rechargeable lithium battery and a rechargeable lithium battery including the same are provided. The negative electrode for a rechargeable lithium battery includes a current collector, and a negative active material layer on the current collector. The negative active material layer includes an interpenetrating network, and a negative active material in the interpenetrating network. The interpenetrating network is formed by cross-linking a first polymer having a hydroxyl or amine group and a second polymer having a carboxylic acid group. The negative electrode for a rechargeable lithium battery minimizes volume expansion and imparts good cycle-life characteristics and initial formation efficiency.

The invention discloses a method for preparing nano-rod cellulose, which comprises the following steps: dispersing fiber raw material into sulphuric acid water solution of which mass concentration is 50 to 65 percent, hydrolyzing the fiber raw material by single-mode microwave radiation for 5 to 60 minutes at a temperature of between 20 and 50 DEG C and at the microwave radiation power of 10 to 100 watts, then adding distilled water into hydrolysis solution and diluting the hydrolysis solution to have 10 times of volume, and obtaining stable nano-rod cellulose suspension through post treatment processes such as centrifugal separation, dialysis, filter, ultrasonic dispersion and the like of the diluent, so as to obtain the nano-rod cellulose of which width is about 10 nanometers and length is about 200 to 300 nanometers.

The invention discloses a charging and discharging method on storage battery formation, which comprises the following steps: a) the storage battery is charged for the first time at a first time, the electric quantity charged into a pole plate is 1.9 times to 2.1 times of the rated electric quantity of the storage battery and the first time is 6.5h to 7.5h; b) the storage battery is discharged for the first time; c) the storage battery is charged for the second time at a second time, the electric quantity charged into the pole plate is 1.4 times to 1.5 times of the rated electric quantity of the storage battery and the second time is 4.5h to 5.5h; d) the storage battery is discharged for the second time; and e) the storage battery is charged for the third time at a third time, the electric quantity charged into the pole plate is 4.0 times to 4.5 times of the rated electric quantity of the storage battery and the third time is 2.5h to 3h. Compared with the prior art, the result of the charging and discharging method shows that the charging and discharging time can be effectively shortened and the content of PbO2 of a positive plate can be caused to reach above 88 percent by choosing appropriate time to discharge for at least two times in the charging process, thus shortening the formation time of the storage battery effectively.

The invention discloses a formation process of formation inverse charging in lead-acid batteries, which includes steps of acid filling or glue filing for the lead-acid battery. The formation process of formation inverse charging in lead-acid batteries is characterized in that after acid filling or glue filing and before charging, the battery is inverse-charged. The formation process of formation inverse charging in lead-acid batteries increases the battery formation efficiency in the lead-acid battery, and namely increases the content of PbO2 after polar plate formation, thereby resolving the hidden problems of long plate grid storage time, unstable combination process of lead paste, poor combination of the plate grid and lead paste and the like, namely increasing the conductivity between the plate grid and an active matter and further reducing the battery internal resistance.

An electroless plating step for forming external electrodes includes preparing a plating solution including a reducing agent and metal ions having a more electochemically positive deposition potential than the oxidation-reduction potential of the reducing agent, placing a laminate for a multilayer electronic component together with a conductive medium having catalytic activity for an oxidation reaction of the reducing agent in a vessel, and stirring the laminate and the conductive medium in the plating solution by rotation, shaking, inclination, or vibration. Electroless plating proceeds to connect each other plating deposits deposited on the ends of a plurality of internal electrodes.

The invention belongs to the technical field of lithium ion batteries and particularly relates to a method for quickly generating a lamination flexible package lithium ion battery. The method comprises a stage of forming a solid electrolyte phase interface film and a stage of discharging formation gas. The main theoretical foundation is that the solid electrolyte phase interface film is mainly formed at the initial stage of formation charging, accompanied with the discharging of the formation gas. The formation of an SEI film is subjected to the influences of current density and temperature and the like. Under a small current density, first organic lithium salt is formed on the surface of a cathode and then inorganic lithium salt is formed, so that the formed SEI film is denser, and ingredients are more stable. At this stage, a high-pressure pressurization formation mode is adopted, the reaction activity can be increased, the reaction is accelerated, battery surface pressure is increased, the ionic migration distance can be shortened, and formation efficiency and pole piece surface reaction consistency are improved. Compared with a conventional formation process, according to the method, the formation time is shortened, the formed SEI film is denser and more stable, and the method can be widely applied to industrial production.

This invention discloses a method of increasing production of virus-like particles comprising expressing an avian influenza matrix protein. The invention also comprises methods of making and using said VLPs.

A method for acidification formation of a long-life lead storage battery is disclosed, the method includes the following steps: 1, adding acid to a lead storage battery for the first time, adding lowspecific gravity sulfuric acid solution with density of 1.05-1.25 g / cm3 to lead storage battery to be acidified, the adding volume being 90-105% of saturated acid absorption capacity of the lead storage battery; 2, formation in the first stage, charging, wherein the total char electric quantity is 3.5 C - 5.0 C; (3) adding acid for the second time, adding high specific gravity sulfuric acid solution with density of 1.25-1.65 g / cm3, and filling; (4) forming in the second stage, first discharging and then charging, the depth of discharging is 25% - 80%, the total charge quantity is 3.5 C - 5.0 C; (5) Extraction of residual acid. As the acid is added in two times, the specific value of the positive electrode active material alpha-PbO2 / beta-PbO2 can be effectively improved, the service life ofthe battery is prolonged, the polarization can be effectively reduced, the formation efficiency can be improved and the formation period can be shortened.

A method of fabricating a composite ferrite sheet including the steps of: (a) forming a grooved green ferrite sheet having a non-intersecting grid pattern by pressing a groove forming die including a plurality of first protrusions and a plurality of second protrusions having a triangular cross sectional shape, each protrusion of at least one of the plurality of first protrusions and the plurality of second protrusions being discontinuous at each imaginary intersecting portion at which extension lines of the respective first and second protrusions intersect each other, (b) firing the grooved ferrite green sheet to obtain a sintered ferrite sheet, (c) bonding at least one supporting sheet to at least one of opposite major surfaces of the sintered ferrite sheet, and (d) rupturing the sintered ferrite sheet along the grooves into a multiplicity of separate and independent rectangular planar ferrite segments which are bonded to the supporting sheet.

A rechargeable lithium battery includes a positive electrode including a positive active material that can reversely intercalate / deintercalate lithium ions, a negative electrode including a negative active material that can reversely intercalate / deintercalate lithium ions, and a non-aqueous electrolyte including includes a non-aqueous organic solvent, a lithium salt, and at least one additive including a dinitrile-based compound. The negative active material includes a compound represented by LixMyVzO2+d wherein 0.1≦x≦2.5, 0≦y≦0.5, 0.5≦z≦1.5, 0≦d≦0.5, and M is a metal selected from the group consisting of Al, Cr, Mo, Ti, W, Zr, and combinations thereof.

The invention provides an alpha / beta-Bi2O3 phase heterojunction photocatalyst as well as a preparation method and application thereof. The method comprises the following steps: firstly dissolving 2-4mmol of a bismuth source material in 70mL of a reductive solvent, magnetically stirring for 30 minutes under the room temperature, then adding 0-2.0mL of aniline into the solution, and continuing to stir for 10 minutes; transferring the mixed solution into a reactor, putting the mixed solution in a drying oven for carrying out solvothermal reaction for 8-12 hours at the temperature of 150-180 DEG C to obtain a bismuth-based precursor; washing, drying and grinding the precursor, putting the precursor in a muffle furnace for calcining for 0.5-2.0 hours at the temperature of 300 DEG C to obtain yellowish green powder which is the alpha / beta-Bi2O3 phase heterojunction photocatalyst. The prepared alpha / beta-Bi2O3 phase heterojunction photocatalyst is used for degrading organic pollutants in water; compared with commercial TiO2 (P25), pure-phase alpha-Bi2O3 and pure-phase beta-Bi2O3 photocatalysts, the alpha / beta-bismuth oxide phase heterojunction photocatalyst has higher visible-light catalytic activity.

The invention discloses a multi-section type convexity regulating and controlling roller with an internal cooling mechanism. A plurality of annular grooves are formed in the surface of a core roller at equal intervals, and annular groove sealing rings matched with the annular grooves are arranged. Two axial water channel holes which are symmetrically formed at 180 degrees are formed in one side ofthe core roller in the axial direction. Two symmetric radial through holes are formed between each annular groove and the corresponding axial water channel hole. The water channels can effectively improve the convexity heat balance rate caused by heat, and the convexity regulating and controlling rate of the roller is increased. A disc type electromagnetic bar is arranged in a central axial through hole of the core roll and is located in the centers of the annular grooves of two core rollers. A flat spiral coil is connected with a slip ring, and then is connected with an external variable-frequency power supply and a cooler. An external signal line of a temperature sensor is connected with the slip ring and then connected to a temperature control module. The model is high in flexible regulating and controlling capability, the regulating and controlling range is wide, and a high-order roller type curve which is stable in roller type and continuously variable can be formed.

The invention discloses lead storage battery positive pole material and a production method thereof, ingredients of the material and percent contents of the ingredients by weight are as follows: 0.2-2% of carbon nanometer tube, 0.2-2% of polyacrylonitrile short fiber, 60-90% of PbO2, the rest is lead powder. The carbon nanometer tube experiencing mixed-acid ultrasonic treatment is used as an additive for the lead storage battery positive pole, which can not only resist corrosion from the execrable electrochemical environment in the lead storage battery, increase specific surface area of the positive pole active substances, promote charging and discharging abilities of an electrode, improve the circulation performance, boost chemical efficiency, but advance the utilization rate of the active substances and discharging capacity of the lead storage battery. In case of 0.5c-10c of current, the utilization rate of the active substances in simulation batteries can be enhanced by 8%-15%. The invention has simple process and low cost as well as adapt to large-scale production and application.

The invention discloses a positive lead paste of a lead-acid storage battery. The positive lead paste is composed of the following raw materials by mass percent: 6.8-10% of 1.4 g / cm<3> sulfuric acid, 9-11% of de-ionized water, 5-16% of red lead, 0.05-0.06% of short fiber, 0.10-015% of carbon fibers, 0.1-0.3% of silicon dioxide, 0.1-0.4% of anisotropic graphite, 0.05-0.28% of stannous sulfate and the balance of lead powder. The positive lead paste of the lead-acid storage battery is characterized in that various positive active materials such as anisotropic graphite, stannous sulfate, silicon dioxide and red lead are added on the basis of a certain content of water and acids in the positive lead paste material so that the porosity of the positive plate is improved and the early-stage capacity and the vimetric specific energy of the lead-acid storage battery are enhanced; and as a result, the formation efficiency of batteries is improved.

The invention relates to a negative pressure formation method of a lithium ion battery and the battery thereof. The negative pressure formation method comprises the following steps: sticking a hydrophobic permeable membrane on a liquid filling hole of the battery, adopting the negative pressure formation technology for carrying out formation on the battery, controlling the battery internal pressure in the range of vacuum degree of minus 0.01MPa-minus 0.1MPa, charging in the current range of 0.01C-1.5C, and carrying out the formation through the time control of the charging volume of the lithium ion battery. The battery formed by the method has high capacity playing of active substances, small internal resistance, small probability of shell bulging, long cycle life and long shelf life and is not affected by environmental humidity. Simultaneously, the method has the advantages of short formation time, high utilization rate of equipment, small energy consumption and small electrolyte loss, and is the high-efficient formation method which is conductive to environmental protection and suitable for mass production of the lithium ion batteries.

The invention provides a formation method of a lead-acid storage battery. The method comprises the steps of firstly, carrying out multi-stage constant-current charge and constant-current discharge, and then carrying out constant-current charge, wherein the total formation time is 45h-70h, and the charge current and the discharge current are 0.05-0.2 C10. The method is used for the formation of the valve-regulated sealed lead-acid storage battery for communication; the polarization phenomenon of the battery in the formation process can be effectively relieved by the multi-stage charge and discharge under the condition that equipment investment is not increased, so that the charging efficiency and the formation efficiency are improved, and the battery capacity is guaranteed.

The invention discloses a fluorine-containing surfactant modified graphene preparation method for an electrode of an electric double-layer capacitor. The method comprises the following steps of: uniformly dispersing a graphene oxide and a fluorine-containing surfactant into de-ionized water respectively, mixing graphene oxide dispersion and a fluorine-containing surfactant solution, which are obtained by the dispersion, performing modification and suction filtration with stirring, vacuum-drying a filter cake to obtain fluorine-containing surfactant modified graphene oxide powder, adding the fluorine-containing surfactant modified graphene oxide powder into a gaseous reducing agent, and performing reduction reaction to obtain the fluorine-containing surfactant modified graphene. The method has the advantages that a process is simple, raw materials are low in cost and readily available, production cost is low, and the method is suitable for industrial production; by the fluorine-containing surfactant modified graphene, the specific surface area of graphene is enlarged; the prepared fluorine-containing surfactant modified graphene has high electrochemical stability and high fluorine-containing organic electrolyte wettability; and when the fluorine-containing surfactant modified graphene is used for an electrode of a super capacitor, the energy density of the capacitor can be improved, equivalent series resistance can be reduced, and the capacitor has the characteristics of high capacity, low internal resistance and long service life.

The invention relates to a method for aseptically producing miniature seed stems of common bletilla pseudobulb seeds. The method comprises the following steps of disinfecting the common bletilla pseudobulb seeds; germinating the seeds on a germination culture medium; inducing the seeds to root; and inducing artificial seed stems to form, grow and mature and the like. According to the method, technical routes and key technologies from the step of germinating the common bletilla pseudobulb seeds to the step of forming the mature seed stems are optimized and proposed, and a technology of culturing common bletilla pseudobulb tissues can be simplified, so that the common bletilla pseudobulb seeds are directly are bred in a large scale, and the common bletilla pseudobulb seed stems are produced. The germination rate of embryo seeds reaches more than 95 percent, and more than 80 percent of tissue culture seedlings can form mature miniature seed stems. According to the method, the difficulty that the common bletilla pseudobulb seeds rarely germinate under natural conditions is overcome, and the defects that the survival rate of transplantation of the seedlings in the conventional common bletilla pseudobulb tissue culture and seed aseptical breeding is low and the like are overcome. A feasible practical technology is provided for quickly producing a great amount of seed stems in factories by means of the common bletilla pseudobulb seeds, the current situation of the shortage of the seed sources of common bletilla pseudobulb can be alleviated, and large-scale artificial cultivation of the common bletilla pseudobulb is promoted.

The invention discloses an additive for a high-carbon lead-acid storage-battery polar plate. The weight percentage of the additive is 0.01-10 percent of the content of lead powder in the formula of the polar plate corresponding to a storage battery, and the additive comprises precipitated SiO2 and / or gas-phase SiO2 or also comprises any one or two in CMC (Carboxyl methyl Cellulose) and PTFE (Polytetrafluoroethylene); because of the existence of the precipitated SiO2 or the gas-phase SiO2, the additive can interact with a sulphuric-acid electrolyte to form a three-dimensional netted structure in a system, and sulphuric acid and water are packaged in the three-dimensional netted structure, so that the electrolyte can be fully contacted with active substances; and meanwhile, the specific surface area of the precipitated SiO2 or the gas-phase SiO2 is higher, the porosity of the polar plate is improved, the surface utilization ratio of the active substances is improved, the capacity of the storage battery is improved, the cycling life of the storage battery is prolonged, and the additive is widely applicable to various high-carbon lead-acid storage-battery polar plates.

The invention discloses a formation method for a lithium ion battery. The method comprises the steps of carrying out formation on the lithium ion battery, after the lithium ion battery is filled with an electrolyte and is subjected to standing, at a temperature of 35-55 DEG C by 0.01-0.5C charging current under a vacuum-pumping condition. The method adopts high-temperature negative pressure for realizing formation; the exhaust gas generated from the internal of the battery in the formation process is exhausted in time; a uniform and stable SEI film is formed on the negative electrode of the lithium ion battery at a high-temperature environment; the battery processed by the formation method has the advantages of high capacity volatilization of active materials, low internal resistance, low expansion rate, long cycle life and long storage life, so that the product quality is improved, and the service life of the battery is prolonged; and meanwhile, the method has the advantages of short formation time, high equipment utilization ratio and low energy consumption, so that the method is an efficient formation method suitable for batch production of the lithium ion batteries.

A read clock circuit for a disk drive includes a phase-locked loop / voltage controlled oscillator (VFO / PLL) and a frequency synthesizer. The VFO / PLL receives a servo sector transition signal that is related to detected transitions in a servo sector field of a magnetic recording disk, and outputs a servo frequency signal that is synchronous to the servo sector transition signal. The frequency synthesizer receives the servo frequency signal and generates the read clock signal that is synchronous with the servo frequency signal. In a banded recording disk drive the frequency synthesizer generates a unique read clock signal for each data band.