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206results about How to "Change solubility" patented technology

Preparation method and application of nickel-rich cobalt-free single crystal positive electrode material of lithium ion battery

The invention discloses a preparation method of a nickel-rich cobalt-free single crystal positive electrode material of a lithium ion battery, and belongs to the field of positive electrode materials of lithium ion batteries. The preparation method comprises the steps of preparing a nickel-rich cobalt-free hydroxide precursor through coprecipitation; uniformly mixing the precursor, molten salt and lithium salt according to a certain stoichiometric ratio, then calcining at high temperature, washing the obtained mixture with deionized water for multiple times, and drying to obtain lithium-deficient single-crystal-morphology spinel-like nickel-rich primary particles; and then supplementing a certain amount of lithium salt into the primary particles, uniformly mixing, and sintering at high temperature to obtain the single-crystal nickel-rich cobalt-free layered positive electrode material. The method is suitable for preparing the single crystal nickel-rich positive electrode material, lithium is added in the first step, the molar ratio Li/(Ni + Mg + Fe + Ti) of the lithium element to the sum of nickel, magnesium, iron and titanium is 0.8-1.0, micron-sized lithium-deficient spinel type nickel-rich single crystal particles are formed after sintering, the micron-sized large-size nickel-rich layered single crystal positive electrode material can be formed in the low-temperature range of 650-800 DEG C after water washing and lithium supplementation, the tap density is high, the lithium-nickel mixed arrangement is low, and the layered structure is good, so that the specific capacity is higher, and the cycle performance is good.
Owner:UNIV OF SCI & TECH BEIJING

Integrated submersible photoelectromagnetism river and lake water purifying method and device thereof

The invention relates to an integrated submersible photoelectromagnetism river and lake water purifying method and a device thereof. In the method, a sewage inhalation device, a gas-water mixer and a purifier which are successively connected are arranged at the bottom of a stream, a lake, an artificial lake, a fountain or a scenery fish pond. A water outlet of the purifier is arranged at a position near the water surface of the river and lake water; sewage water to be purified is inhaled by the sewage water inhalation device and is sprawled into the gas-water mixer in a jet flow way and at high speed after being magnetized strongly by a magnetizer; the sewage water in a gas mixing chamber of the gas-water mixer is forced to be mixed with ozone in the gas mixing chamber to compose a gas-liquid mixed flow; the mixed fluid is injected into the purifier; the high speed jet is utilized to involve and inhale sewage water near a water inlet of the purifier into the purifier; a photoelectric combined catalytic oxidation treatment is carried out on the sewage water mixed with the ozone in the purifier; then, outlet water forms a level circulating water flow on the periphery of the water outlet of the purifier to realize gradient exchange purification of the whole river and lake water. The integrated submersible photoelectromagnetism river and lake water purifying method and the device thereof have the advantages of less land occupation, little investment and operating cost and good purifying effect.
Owner:深圳市政水环境技术有限公司

Method for preparing spherical organic micro-molecular monomer or compound through emulsion technology

The invention discloses a method for preparing a spherical organic micro-molecular monomer or compound through an emulsion technology. The method comprises the following steps: adding one or more organic micro-molecules to a solvent-nonsolvent, stirring the one or more organic micro-molecules and the solvent-nonsolvent, adding a surfactant, carrying out ultrasonic or mechanical emulsion after the above obtained emulsion is uniformly dispersed, precipitating crystals through adopting a crystal precipitation technology to obtain a solid and liquid mixture, filtering the mixture, washing the obtained solid, and drying the washed solid to obtain monomer or compound spherical crystals. Compounding, super refinement and spheroidization of the organic micro-molecules are combined in the invention, so the sensitivity of an energetic material is greatly reduced, the fluidity and the loading density of the energetic material are improved, and the viscosity of the crystals in the 3D printing or PBX explosive slurry of the energetic material is reduced; the change of the melting point and the solubility of a medicine improves the stability and the bioavailability of the medicine and facilitates pressing into tablets; and the crystals allow the researching and application fields of conductive organic crystals, nonlinear optical crystals, dyes, photograph raw material pigments and agrochemicals to be expanded.
Owner:SOUTHWEAT UNIV OF SCI & TECH

Method for extracting athomin with mustard seeds as raw material

The invention relates to a method for extracting athomin with mustard seeds as the raw material. The method comprises the following steps: taking mustard seeds in brassica in cruciferae as the processing raw material, soaking the raw material in water after being crushed, and then rapidly and effectively obtaining crude product of athomin by a subcritical water extraction method. Because the subcritical water extraction technology is a novel environment-friendly extraction technology not using or rarely using organic solvent, when being in the subcritical state, water has certain dissolving capacity to semi-polar and non-polar organisms, the polarity, the surface tension and the viscosity of water can be changed by controlling the temperature and the pressure of subcritical water, so that the dissolving capacity of the subcritical water to the organisms can be greatly imoroved, therefore, the extraction efficiency is greatly improved, and the content of allyl isothiocyanate product in athomin is high. Compared with the prior art, the method has the advantages of simple technological line, reasonable technological condition, simple and safe reaction and operation, short reaction time, low solvent loss, low technological cost, and high implementation value and social and economic benefit.
Owner:北京农鹰现代农业技术研究院 +3

Beta-cyclodextrin inclusion compound of huperzine A, and preparation method and preparation thereof

The invention discloses a beta-cyclodextrin inclusion compound of huperzine A, and a preparation method and preparations thereof. The beta-cyclodextrin inclusion compound of the huperzine A consists of 2.5 to 9.5 weight percent of huperzine A and 97.5 to 90.5 weight percent of beta-cyclodextrin. The preparation method comprises the following steps of: a) dissolving the huperzine A in an pharmaceutically acceptable organic solvent to prepare solution A, and heating and dissolving the beta-cyclodextrin in water to prepare solution B; and b) slowly adding the solution A into the solution B with stirring, and continuing to perform stirring until the mixed solution is uniform to prepare the beta-cyclodextrin inclusion compound of the huperzine A. The beta-cyclodextrin inclusion compound of the huperzine A further can be mixed with water-soluble carriers with viscosity, such as starch and the like, and then is pelletized, tabletted or filled into capsules with substrates. In the method, an extremely small amount of water-insoluble huperzine A is fully, effectively and uniformly dispersed, so the dissolution rate of the huperzine A is increased and the stability of the huperzine A is improved. The provided beta-cyclodextrin inclusion compound of the huperzine A can be used for preparing solid preparations and liquid preparations, operating steps are reduced and the production cost is remarkably reduced.
Owner:上海复旦复华药业有限公司 +1
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