23 results about "Ferric Pyrophosphate" patented technology

The invention relates to a preparation method of a doped carbon material coated sodium ferric pyrophosphate positive electrode material, which comprises the following steps: S1, mixing a sodium source, an iron source, a phosphorus source, a carbon source and a dispersing agent which are respectively weighed according to a stoichiometric ratio to obtain a premix; wherein the molar ratio of sodium to iron to phosphorus in the sodium source, the iron source and the phosphorus source is 4: 3: 4; adding water of which the mass is 3-5 times that of the premix into the premix, and stirring and dispersing to obtain dispersion liquid; s2, transferring the dispersion liquid into a sand mill, and sanding until the granularity of solid particles is 0.1-0.8 mu m, so as to obtain slurry; and S3, carrying out spray drying on the slurry, and sintering powder generated by spray drying in an inert atmosphere furnace to obtain the doped carbon material coated ferric sodium pyrophosphate positive electrode material. The dispersing agent is introduced into the sanding slurry, so that the sanding efficiency can be improved, and the dispersity and uniformity of the material can be improved; and meanwhile, a boron-containing dispersing agent and a nitrogen-containing carbon source are used for realizing co-doping on a product carbon layer, so that the electrochemical performance of the material is improved. The invention can effectively improve the discharge capacity and cycle life of the sodium battery.

The invention relates to the technical field of sodium ion battery positive electrode materials, in particular to a composite sodium ferric sulfate positive electrode material, a sodium ion battery and a preparation method. The preparation method comprises the following steps: preparing a group IIIA metal doped composite sodium ferric sulfate precursor; mixing with a solution containing a sodium source, an iron source and a phosphorus source; and performing staged heat treatment under a protective atmosphere to form a pyrophosphate ferric phosphate sodium coating layer. The particle size D50 of the composite sodium ferric sulfate positive electrode material is 3-5 [mu] m, and the composite sodium ferric sulfate positive electrode material can inhibit iron dissolution and enhance structural stability through bulk phase doping and surface coating cooperation, can prolong the cycle life of a battery and reduce gas production, and is suitable for a high-performance sodium ion battery.

The invention provides a sodium ion positive electrode material and a preparation method and application, and belongs to the field of sodium ion batteries, the sodium ion positive electrode material comprises an inner core and a coating layer coating the inner core, the inner core is ferric sodium phosphate pyrophosphate, the coating layer is a carbon coating layer, the carbon coating layer comprises an organic carbon source, an inorganic carbon source and MXene, and the organic carbon source and the inorganic carbon source are mutually connected. And the thickness of the carbon coating layer is 0.2 [mu] m-0. 4 [mu] m. In the carbon coating layer, inorganic and organic carbon are compounded and MXene is doped, and meanwhile, the thickness of the carbon coating layer is controlled, so that the compaction density, the conductivity and the structural stability of the sodium ion positive electrode material are favorably improved, and the rate capability and the cycling stability of the sodium ion positive electrode material are further improved.

An oral composition comprising at least one probiotic bacteria selected from the genera: Lactobacillus, Bifidobacterium, and Bacillus, and ferric pyrophosphate.

This invention discloses a composition that helps improve sleep and its application in infant formula. The composition comprises plant fermentation products, theanine, magnesium oxide, milk mineral salts, ferric pyrophosphate, vitamin B6, vitamin C, and vitamin D3. The plant fermentation products are obtained by fermenting licorice powder, jujube seed powder, poria cocos powder, angelica powder, and hawthorn powder with *Lactobacillus helveticus* and *Lactobacillus rhamnosus*, followed by sterilization, filtration, concentration, and freeze-drying. This invention employs multi-strain mixed fermentation, and the synergistic effect between different microorganisms can effectively increase the concentration of natural active substances in the extract. The resulting plant fermentation products can effectively enhance the sleep-improving effect of the composition.

The application discloses a sodium pyrophosphate iron phosphate positive electrode material and a preparation method thereof, and belongs to the technical field of synthesis of sodium ion battery positive electrode materials. 3.6 Fe 2.6 (PO4) 1.6 P2O7; the preparation method of the sodium pyrophosphate iron phosphate positive electrode material comprises the following steps: S1, dissolving a soluble chemical composition containing an iron source, a sodium source, a phosphorus source and a carbon source in deionized water to form a precursor solution, and stirring until uniform; S2, adding the precursor solution into 1-4 times the volume of a strong water-absorbing organic solvent, fully stirring to precipitate the precursor, and then performing reduced-pressure filtration to obtain a precursor with uniform element distribution; and S3, performing high-temperature sintering on the precursor to obtain the sodium pyrophosphate iron phosphate positive electrode material. The application greatly simplifies the preparation process of the sodium pyrophosphate iron phosphate material, and also ensures that the sodium pyrophosphate iron phosphate material has excellent electrochemical performance, and solves the problems of complicated production process, high energy consumption and poor optimization of impurity phases in the prior art.

The invention discloses a preparation method of a polyanion positive electrode material ferric sodium pyrophosphate (NFPP, chemical formula: Na4Fe3 (PO4) 2P2O7) without a physical sanding process, and relates to the technical field of synthesis of inorganic functional materials. According to the method, dependence of a traditional process on physical sanding is broken through, common industrial raw materials are adopted, an iron source is limited to be a mixed system of water-insoluble iron phosphate and ferrous oxalate (the molar ratio is 1: (0.005-0.5)), and the water-insoluble iron phosphate and the ferrous oxalate form a specific proportion and can generate a synergistic effect in a solution to accelerate reaction and dissolution; the molar ratio of sodium to iron to phosphorus is accurately controlled to be (4-4.04): (2.9-3): 4, the self-adaption of pH and raw material ratio (the pH is stabilized at 4-6) is synergistically realized by utilizing the characteristics of the raw materials, and the particle refining and dispersing effects of sanding are replaced by combining chemical complexing, step-by-step feeding and multi-parameter coordinated regulation. The process is highly compatible with an existing mass production process, rapid adaptation can be achieved without modifying a production line, the investment and energy consumption of sanding equipment are omitted, the energy consumption of a unit product is reduced by about 20%, and the comprehensive production cost is reduced by 10% or above; the product is pure-phase NFPP, the particle size D50 is 2-10 microns, the first specific discharge capacity is greater than or equal to 105mAh / g, the capacity retention rate after 500 cycles is greater than 95%, and the product is suitable for the fields of energy storage batteries, power batteries and the like and has huge industrial potential.

The invention relates to the technical field of development of novel food sources, in particular to a vegetable protein solid beverage and a preparation method thereof. The vegetable protein solid beverage consists of the following raw materials in percentage by mass: 50-70 parts of soybean protein isolate, 10-20 parts of isomaltooligosaccharide, 5-10 parts of red bean powder, 5-10 parts of black bean powder, 5-10 parts of corn flour, 5-10 parts of oat flour, 3-8 parts of soybean peptide powder, 2-5 parts of xylooligosaccharide, 2-5 parts of radix polygonati officinalis powder, 2-5 parts of skim milk powder, 1-3 parts of hericium erinaceus powder, 1-3 parts of inulin and 0.5-2 parts of calcium carbonate. The feed additive comprises the following components in parts by weight: 0.1-0.5 part of ferric pyrophosphate, 0.01-0.05 part of beta-carotene and 0.01-0.05 part of ethyl maltol The invention focuses on vegetable protein compounding optimization and precise preparation, selects soybean protein isolate and a plurality of medicinal and edible plant raw materials, and combines scientific proportioning and fine process, so as to break through the limitation of traditional products, develop the vegetable protein solid beverage which is comprehensive in nutrition, fine and smooth in taste, good in stability and suitable for special crowds, and fill the blank of the market subdivision field.

The invention discloses a preparation method of a sodium ferric pyrophosphate positive electrode material for sodium ions, and relates to the technical field of new energy storage, and the preparation method comprises the following steps: proportioning: proportioning four elements of Na, Fe, P and C according to a ratio of 4: 2.92: 4: 0.97; dissolving: weighing a plurality of ingredients as reaction raw materials, dissolving the raw materials in 100L of absolute ethyl alcohol, and stirring to obtain a turbid liquid A; carrying out ball milling, transferring the obtained turbid liquid A into a ball mill, setting the ball-to-material ratio of grinding to be 1: 8, and carrying out ball milling to obtain turbid liquid B; drying, transferring the obtained turbid liquid B into a drying oven, and drying to obtain a precursor; the preparation method comprises the following steps: mixing raw materials, sintering, sintering the obtained precursor in a nitrogen atmosphere furnace by adopting a two-step sintering method to obtain a carbon-coated product, cooling, sieving and the like, by means of optimizing the raw material ratio, introducing crystal defects, controlling reaction conditions and the like, generation of impure phases during synthesis is reduced, and preparation of high-purity ferric sodium pyrophosphate is realized.

The invention relates to the technical field of sodium ion batteries, in particular to a modified ferric sodium pyrophosphate positive electrode material as well as a preparation method and application thereof. The preparation method comprises the following steps: (1) reacting an oxalic acid source, an iron source and a manganese source in an aqueous solution to obtain an iron manganese oxalate intermediate; and (2) uniformly mixing the ferric manganese oxalate intermediate with sodium phosphate, sodium pyrophosphate and a reducing agent, heating to obtain a gelatinous solid, drying and sintering to obtain the modified ferric sodium phosphate pyrophosphate positive electrode material. The nucleation and growth rate of particles in the precipitation process is regulated and controlled through manganese ions by adopting a coprecipitation method, so that the particles are more tightly stacked, the compaction density of the product is effectively improved, meanwhile, the conductivity and the structural stability of the ferric sodium pyrophosphate can be effectively improved through manganese doping, and the performance of the ferric sodium pyrophosphate is improved. Therefore, the prepared modified sodium ferric pyrophosphate positive electrode material has relatively high discharge platform voltage and energy density, and excellent rate capability and cycle performance.

This invention discloses a hydrothermal preparation process for sodium ferric pyrophosphate, comprising the following steps: S1, preparation of precursor mixed solution: weigh sodium source, iron source, phosphorus source, and pyrophosphate source according to stoichiometric ratio, add complexing agent and pH buffer, and stir evenly to obtain precursor mixed solution A; S2, complexation and stabilization treatment of pyrophosphate: add complexing agent B to precursor mixed solution A to form a stable pyrophosphate complex, obtaining precursor solution B; S3, hydrothermal reaction: after hydrothermal reaction, naturally cool to obtain hydrothermal product; S4, post-treatment: centrifuge, wash, and dry the hydrothermal product to obtain sodium ferric pyrophosphate precursor powder; S5, carbon coating and calcination: calcine the sodium ferric pyrophosphate precursor powder and carbon source at wet high temperature to obtain carbon-coated sodium ferric pyrophosphate material. This invention features high crystallinity, high compaction density, strong process feasibility, and excellent comprehensive performance.

According to the sugar-free soft sweets containing the mineral substances and the making technology of the sugar-free soft sweets, high-acyl gellan gum, kappa-type carrageenan and konjac glucomannan are used as a ternary gel system, erythritol and stevioside are used as a sweet system, the mineral substances such as calcium citrate, zinc glycinate, ferric pyrophosphate and magnesium L-threonate are scientifically added, and the sugar-free soft sweets containing the mineral substances are made into the sugar-free soft sweets containing the mineral substances and the making technology of the sugar-free soft sweets containing the mineral substances. And stable existence of minerals is realized through pH buffering and a low-temperature process. The product does not contain cane sugar, has GI of 0, tastes elastic, is rich in calcium, iron, zinc and magnesium, and is suitable for diabetics and crowds needing mineral supplement. The preparation process adopts low-temperature pouring-cooling molding, needs no sugar boiling and low-temperature sol dissolving, and is low in energy consumption and suitable for industrial production. The sugar-free soft sweets solve the problems that existing sugar-free soft sweets are poor in mineral stability, poor in taste, single in nutrition and the like, meet the consumption requirements of special-demand groups and have good market prospects.

The invention provides a helicobacter pylori culture medium, a culture method and application thereof, and relates to the technical field of microbiological culture.The helicobacter pylori culture medium comprises a basic culture medium and antibiotics, and when the basic culture medium is a brain heart infusion agar culture medium, the basic culture medium is a solid culture medium and is used for activation by adding defiberized sheep blood or goat serum; when the basic culture medium is a Brinell broth culture medium, the basic culture medium is a liquid culture medium, essential amino acid is provided by adding L-cysteine, and the basic culture medium is used as a reducing agent, so that enrichment culture of anaerobic bacteria is facilitated. Meanwhile, ferric pyrophosphate, L-cysteine and antibiotics are combined for use, so that rapid growth of the helicobacter pylori is promoted, pollution caused by infectious microbes is effectively reduced, and a more stable growth environment is provided for the helicobacter pylori; data show that when the culture medium is used for culturing helicobacter pylori, compared with a traditional solid culture method, the yield of collected wet thalli is increased by nearly three times, and the high survival rate can be kept while high-speed multiplication culture of helicobacter pylori can be achieved.

The invention discloses application of an iron-containing substance. The invention finds that the iron-containing substance can be used for preparing the medicine for treating leucopenia and / or thrombocytopenia; the iron-containing substance is selected from myoglobin and a derivative thereof, hemoglobin and a derivative thereof, ferrous sulfate, ferrous fumarate, ferrous gluconate, a polyferose compound, ferrous succinate, iron amino acid chelate, heme, heme iron polypeptide, ferric hydroxide polymaltose, ferrous lactate, ferric pyrophosphate and iron dextran; and one or more of iron hydroxymaltose. The iron-containing substance can effectively increase the number of leukocytes and / or platelets.

The invention relates to the field of batteries, in particular to a high-stability ferric sodium pyrophosphate composite material as well as a preparation method and application thereof. The preparation method comprises the following steps: S1, dispersing a sodium source, an iron source, a phosphorus source, an organic carbon source, a conductive agent and a metal ion additive in deionized water, adding an ethylene glycol dispersant, uniformly stirring, and evaporating water to prepare a precursor; s2, grinding the precursor, adding an inorganic carbon source, grinding again, and sequentially carrying out pre-sintering treatment and anion fluorine doping treatment; and S3, adding an oxide solid electrolyte material, grinding until the material is uniformly dispersed, and sequentially carrying out tabletting treatment and high-temperature sintering treatment to obtain the sodium ferric pyrophosphate composite material.

The invention belongs to the field of food for special diets, and particularly relates to protein powder with multiple nutrients. Comprising 550 to 600 parts of concentrated whey protein powder, 250 to 300 parts of separated whey protein powder, 80 to 120 parts of hydrolyzed whey protein powder, 30 to 50 parts of calcium hydrogen phosphate, 4 to 6 parts of magnesium oxide, 1 to 1.5 parts of ferric pyrophosphate, 0.5 to 2 parts of zinc lactate, 0.02 to 0.035 part of vitamin B1, 0.02 to 0.035 part of vitamin B2, 0.02 to 0.035 part of vitamin B6, 0.005 to 0.006 part of a 1% vitamin B12 dilution product, 1 to 2 parts of vitamin C, 0.06 to 0.07 part of a compound nutrition enhancer and 0.3 to 0.45 part of nicotinamide. The composition comprises the following components in parts by weight: 0.5-2 parts of vitamin E acetate dry powder, 0.08-0.15 part of D-calcium pantothenate, 7-9 parts of taurine, 2-3 parts of edible essence and 0.004-0.006 part of folic acid. According to the present invention, with the protein powder, the requirement of the body on the protein can be met only through the small intake, the operation process of the protein supplement is simplified, such that the common healthy population, the exercise body builder, the specific population requiring the nutrition support, such as the postoperative recovery period, the old and the like can easily enhance the nutrition through the protein powder without worrying about the health cost; the use safety and convenience of the protein powder are obviously improved.

The invention relates to a method for preparing iron phosphate by using waste ferric sodium pyrophosphate, which comprises the following steps: adding waste ferric pyrophosphate into acid liquor for reaction, and carrying out solid-liquid separation to obtain filtrate; adding an oxidizing agent into the filtrate, and carrying out oxidation reaction to obtain oxidized filtrate; adding alkali liquor into the oxidized filtrate to adjust the pH value to be greater than or equal to 1.5, carrying out precipitation reaction, and then carrying out solid-liquid separation to obtain a precursor; calcining the precursor in an oxygen-containing atmosphere to obtain battery-grade iron phosphate; through the method provided by the invention, high-valued utilization of the sodium ferric pyrophosphate material can be realized, the energy consumption is reduced, and the burden of the waste positive electrode material on the environment is reduced.

The invention provides a sodium ferrous sulfate positive electrode material and a preparation method and application thereof, and belongs to the technical field of sodium ion batteries, the preparation method of the sodium ferrous sulfate positive electrode material comprises the following steps: preparing a mixed slurry containing an antioxidant, a seed crystal, an iron source, a sodium source and a carbon source, the seed crystal being sodium ferric pyrophosphate; drying the mixed slurry to obtain a precursor; and sintering the precursor to obtain the sodium ferrous sulfate positive electrode material. According to the preparation method, the sodium ferrous sulfate is induced to nucleate and crystallize on the surface of the sodium ferrous sulfate by taking the sodium ferric phosphate pyrophosphate as the seed crystal, so that the sodium ferrous sulfate positive electrode material taking the sodium ferric phosphate pyrophosphate as an inner core and the sodium ferrous sulfate as a shell layer is prepared, and the sodium ferrous sulfate positive electrode material has relatively high compaction density and relatively high specific capacity at the same time; better application prospects are realized.

The invention discloses a ferric sodium pyrophosphate-doped positive electrode material, which is characterized in that layered double hydroxides are used as an iron source and a doped metal source, and iron and doped metal elements are uniformly distributed; doped metal elements in the positive electrode material are one or more of magnesium, zinc, nickel, cobalt, calcium, copper and manganese. The positive electrode material is used as a positive electrode active material and used for preparing a sodium ion battery positive electrode. According to the invention, through the innovation of precursor design, namely the utilization of the structural characteristics of layered double hydroxides, the uniform distribution of doping elements in ferric sodium pyrophosphate is realized, and then through the synergistic effect of optimizing an electronic structure, promoting ion transmission and stabilizing a crystal frame, the purpose of improving the specific capacity and rate capability of the material is finally achieved.

The present invention provides a modified sodium ferric pyrophosphate, a preparation method, and applications thereof. The modified sodium ferric pyrophosphate comprises a core and a coating coated on the core; the core is Na4Fe3(PO4)2P2O7, and the coating comprises a sodium supplement and a reaction product formed by a high-temperature reaction between the sodium supplement and a phosphorus source. By modifying Na4Fe3(PO4)2P2O7 with a sodium supplement and a phosphorus source, the present invention effectively compensates for capacity loss caused by sodium loss and improves the sodium ion diffusion efficiency of Na4Fe3(PO4)2P2O7. The resulting modified sodium ferric pyrophosphate exhibits a high specific capacity and excellent rate and cycle performance.

The invention belongs to the field of batteries, and particularly discloses a sodium ferric pyrophosphate composite material as well as a preparation method and application thereof. According to the method, the pyrophosphate ferric phosphate sodium material seed crystal containing the solid electrolyte is firstly prepared, and the seed crystal is matched with other raw materials to synthesize the pyrophosphate ferric phosphate sodium composite material, so that the problems of long sintering time and more product impurities in the synthesis of the pyrophosphate ferric phosphate sodium composite material are solved, and the energy consumption is greatly reduced; the finally obtained pyrophosphate ferric phosphate sodium composite material has high compaction density, stability, specific discharge capacity, rate and conductivity, and has a prospect of large-scale production.

The application relates to the field of sodium ion battery electrode materials, and discloses a sodium pyrophosphate iron phosphate composite material prepared through in-situ polymerization, a preparation method and application. x Fe y (PO4) z P2O7, a preparation process of which is as follows: a precursor is prepared by combining a segmented grinding and drying process, a sodium pyrophosphate iron phosphate positive electrode material is obtained through pre-sintering and sintering under the protection of an inert gas, and then in-situ polymerization coating is carried out to uniformly coat organic monomers on the surface of the material. In the application, the organic monomers are in-situ polymerized on the surface of the prepared sodium pyrophosphate iron phosphate material through electrochemistry, thereby successfully solving the problems of serious side reactions caused by poor structural stability of the material surface and particle breakage caused by internal stress of secondary particles in the charging and discharging process. The prepared material can be applied to the field of sodium ion batteries and can effectively improve the electrochemical performance of the sodium pyrophosphate iron phosphate material.

The present technology relates to the field of iron compositions, feed additives an animal nutrition and growth. In particular, the present technology relates to non-therapeutic method for enhancing the growth performance of an animal, said method comprising the step of administering an iron composition comprising a) from 25 to 80 wt.% of ferric pyrophosphate; b) from 40 to 80 wt.% of starch; and c) from 0.05 to 5 wt.% of lecithin. Animal feed and methods for preparing animal feed comprising the iron composition disclosed in the present invention are contemplated in the context of the present technology.