13 results about "Ferric Pyrophosphate" patented technology

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.

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 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.

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 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 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 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.