2931 results about "Magnesium ion" patented technology

Solid-state, ion-conducting batteries with an ion-conducting, solid-state electrolyte. The solid-state electrolyte has at least one porous region (e.g., porous layer) and a dense region (e.g., dense layer). The batteries are, for example, lithium-ion, sodium-ion, or magnesium-ion conducting solid-state batteries. The ion-conducting, solid-state electrolyte is, for example, a lithium-garnet material.

A magnesium battery electrode assembly is described, including a current collector comprising a carbonaceous material and an electrode layer comprising an electrode active material disposed on the current collector.

This invention generally relates to electrochemical cells utilizing magnesium anodes, new solutions and intercalation cathodes. The present invention is a new rechargeable magnesium battery based on magnesium metal as an anode material, a modified Chevrel phase as an intercalation cathode for magnesium ions and new electrolyte solution from which magnesium can be deposited reversibly, which have a very wide electrochemical window. The Chevrel phase compound is represented by the formula Mo6S8-YSeY in which y is higher than 0 and lower than 2 or by the formula MXMo6S8 in which M is selected from the group comprising of copper (Cu), nickel (Ni), silver (Ag) and/or any other transition metal; further wherein x is higher than 0 and lower than 2.

Implantable medical devices for cardiac care are provided that include a housing having a power source and control electronics; at least one lead extending from the housing and having one or more discrete reservoirs therein, each reservoir having an opening to an outer surface of the lead; one or more sensors, which monitor or detects an analyte, biomarker, or physical parameter that is associated with cardiac health, located in the reservoirs and in operable communication with said control electronics; and at least one selectively disintegratable reservoir cap sealing each of the reservoir openings, wherein the reservoir cap is operably connected to the power source and control electronics to disintegrate the reservoir cap and expose the sensors in vivo. The sensor may detect an analyte or biomarker selected from potassium ion, sodium ion, lithium ion, magnesium ion, ammonium ion, ionized calcium, lactate, oxygen, carbon dioxide, and creatinine, urea, BUN, and bilirubin.

The invention provides compositions comprising bauxite refinery residues that have been reacted with sufficient calcium and magnesium ions that they have a reaction pH of less than 10.5, and one or more water treating additives. The invention also provides processes for treatment of water containing dissolved inorganic substances involving stepwise treatment of the water in which the reacted bauxite refinery residues are added after the addition of a pH-raising additive. The invention also provides processes for treatment of water containing dissolved inorganic substances in which the reacted bauxite refinery residues are added stepwise, with one or more water treating additives also being added in at least one of the steps. The invention also provides a process for the neutralisation of bauxite refinery residue by reacting it with a base amount and a treating amount of calcium ions and a base amount and a treating amount of magnesium ions for a time sufficient to produce an at least partially-neutralized residue exhibiting a reaction pH of less than 10.5.

The invention relates to compositions for use in purgatives, to purgatives comprising such compositions, and to methods for inducing purgation of the colon. The composition may comprise at least one water-soluble sodium salt; at least one water-soluble minimally degradable sugar in an amount, by weight, of from about 1 to about 3 times the weight of sodium ions in said composition; at least one water-soluble potassium salt in an amount, by weight, of from about 0.05 to about 1 time the weight of said sodium salt in said composition; and at least one water-soluble magnesium salt, wherein the weight of magnesium ions in said composition is from 0.1 to about 10 times the weight of sodium ions in said composition.

The invention relates to a bone implanting and internal fixation appliance with bioactivity and absorbability, which belongs to the field of bio-medical appliances, particularly to the field of medical appliances used for bone wound surgery, reparative and reconstructive surgery and plastic and cosmetic surgery. The appliance includes bone nails and a bone plate made of magnesium and the alloy thereof with bioactivity and absorbability. The bone implanting and internal fixation appliance is a bone internal fixation device, which comprises a blade plate and matched screws, intramedullary nails, a fracture and dislocation fixing device of vertebral column, bone nails or screws having individual fixation effect, wherein the bone internal fixation device is made of magnesium and the alloy thereof with bioactivity and absorbability. The bone internal fixation device can solve the problem in bioactivity of prior bone internal fixation device and promote healing the tissue where the device in implanted. The device also includes a protection layer prepared on the surface of the internal fixation device for controlling the degradation rate of magnesium alloy and the dissolution rate of magnesium ions, thus controlling the bioactivity and the absorption speed of the magnesium alloy device in an organism.

A magnesium battery (10) is constituted of a negative electrode (1), a positive electrode (2) and an electrolyte (3). The negative electrode (1) is formed of metallic magnesium and can also be formed of an alloy. The positive electrode (2) is composed of a positive electrode active material, for example, a metal oxide, graphite fluoride ((CF)_n) or the like, etc. The electrolytic solution (3) is, for example, a magnesium ion-containing nonaqueous electrolytic solution prepared by dissolving magnesium(II) chloride (MgCl₂) and dimethylaluminum chloride ((CH₃)₂AlCl) in tetrahydrofuran (THF). In the case of dissolving and depositing magnesium by using this electrolytic solution, the following reaction proceeds in the normal direction or reverse direction.

According to this, there are provided a magnesium ion-containing nonaqueous electrolytic solution having a high oxidation potential and capable of sufficiently bringing out excellent characteristics of metallic magnesium as a negative electrode active material and a method for manufacturing the same, and an electrochemical device with high performances using this electrolytic solution.

The invention relates to a method for preparing a spherical nanometer sliver powder. A method for preparing a spherical nanometer sliver powder is characterized in that the invention includes the following steps: 1) spraying and pyrolyzing: a, dissolving silver nitrate with one of the three: {1}magnesium nitrate, {2}nickel nitrate, {3}copper nitrate into water to prepare into a water liquor with a consistency of 10 to 40wt percent; the mol ratio of magnesium ion, nickel ion or copper ion in the liquor is 0.05 to 1 :4; then spraying for pyrogenation; b, under the existence of a dispersant and protecting agent, adding into a non-water ethanol to disperse to acquire a mixture; 2) preparing the spherical nanometer sliver powder: a, dripping acid liquor into the mixture and adjusting a PH value between 3 to 5 to acquire a suspension containing the spherical nanometer sliver powder; b, pumping filtration, washing and drying to acquire the spherical nanometer sliver powder. The preparing method is simple and easy to be controlled, has no pollution and low cost, is suitable for industrialization scale production. The prepared spherical nanometer sliver powder belongs to the nanometer grade and the powder has uniform distribution of the grain diameter, regular shape and high yield.

The invention relates to a method for efficiently extracting lithium from salt lake brine. The method comprises the following steps: (1) forming an extraction organic phase by an extraction agent, a co-extraction agent and a diluent, and then mixing the extraction organic phase with salt lake brine according to the volume ratio of (3-4):2 for three-stage extraction with single extraction time being 2-10 minutes to obtain an organic phase; and (2) mixing the organic phase obtained in step (1) with a reverse extraction acid solution (0-1 mol/L) for three-stage reverse extraction with single reverse extraction time being 2-10 minutes, and collecting an aqueous phase which is an aqueous solution containing lithium ions. The co-extraction agent of an extraction system of the method is hydrophobic ionic liquid, compared with conventional synergist ferric trichloride, the interference caused by iron ions is avoided, the reverse extraction acidity is greatly reduced, more importantly the lithium-magnesium separation factor is significantly improved, and the elution step of magnesium ions is reduced; in addition, the method provided by the invention is easy in process, easy to control, high in operation reliability, and good in recyclability of the organic phase, and greatly reduces the production cost for extracting the lithium from the salt lake brine.

The invention relates to a method for producing high-purity lithium carbonate by using lithium concentrate. The method is characterized by comprising the following steps of: preparing an acid clinker, preparing a mixing size, preparing a lithium sulfate leaching solution, preparing a lithium sulfate purification liquid, preparing a lithium sulfate finishing solution, preparing a sodium carbonate solution, performing primary lithium deposition reaction, preparing a sodium separating mother liquor, preparing excellent lithium carbonate in a sweating manner, and preparing 99.99% of high-purity lithium carbonate. By adopting the method, the principle of removing calcium and magnesium ions is ingeniously utilized in preparation of common lithium carbonate; a fussy procedure of removing calcium and magnesium by ion exchange resin is avoided when the common lithium carbonate is purified to prepare the high-purity lithium carbonate; a method of recycling after separating out sodium sulfate in a freezing manner is adopted to process the primary lithium settling mother liquor; the high-purity lithium carbonate mother liquor in precipitation of the high-purity lithium carbonate is used as an optimal lithium carbonate washing liquor for primary lithium sedimentation after being recycled for a plurality of times. Thus, the method has the characteristics of simple process, high production efficiency, high recovery rate and low production cost.

A composition for metal surface treatment which comprises an aluminum ion, a magnesium ion, a manganese ion, a water-soluble organic resin, an acid and water; and a surface treated metal material which has been treated with the composition. The resultant surface treated metal material is free from the danger of water contamination owing to chromium, since the composition is free of chromium, and also is excellent in both electrical conductivity and corrosion resistance. Accordingly, the metal material can be used in a wide variety of applications in place of a conventional chromate-treated steel sheet and the like.

The present invention relates to compositions and methods employing a water soluble magnesium compound. In certain embodiments, the composition includes water and water soluble magnesium compound, but lacks other materials commonly used in cleaning compositions. The methods and compositions can provide magnesium ion at predefined ratios to calcium ion in water, such as magnesium ion in a molar amount equal to or in excess over a molar amount of calcium ion. A water soluble magnesium salt including an anion of a water soluble calcium salt is more effective than a magnesium salt with an anion of a water insoluble calcium salt. These compositions can be used for reducing lime scale or precipitate formation from hard water, removing soap scum, or the like.

The invention belongs to the field of waste water treatment and reclaimed water reuse, in particular to a method and a device for the zero-emission treatment of high-hardness waste water containing sulfate. The method for the zero-emission treatment of high-hardness waste water containing sulfate comprises the following steps: 1) sequentially substituting calcium and magnesium ions in waste water into sodium ions by a double-alkali process and an ion exchange process and simultaneously removing most alkalinity so as to promote sulfate radicals and chlorine ions to be the main components of rest anions in water and promote sodium ions to be the main component of cations; 2) concentrating waste water obtained in step 1) through reverse osmosis and reclaiming produced water; 3) separating and concentrating concentrated water treated by reverse osmosis in step 2) through nanofiltration so as to obtain nanofiltered concentrated water of which the main component is sodium sulfate and nanofiltered produced water of which the main component is sodium chloride; 4) after concentrating the produced water nanofiltered in step 3) through reverse osmosis or positive osmosis, evaporating and concentrating; 5) removing sulfate radicals from the concentrated water nanofiltered in step 3). The concentrating times of waste water is increased as much as possible, and the evaporating quantity of waste water is reduced.

The invention relates to a pyrro-quinoline quinine (PQQ) sodium salt derivative and a preparation method thereof, belonging to the field of pharmacy. In the preparation method, PQQ is used as a raw material, and an acid-base neutralization reaction with PQQ is carried out in a basic solvent of sodium hydroxide to prepare the PQQ sodium salt derivative represented in the structural formula (I), wherein R1, R2 and R3 can be identical or different and respectively represents H, ammonium ion (NH3), potassium ion, sodium ion, magnesium ion, calcium ion or zinc ion, and at least one of R1, R2 and R3 is sodium ion. The invention has mild reaction conditions, easy product refining and purification, simple preparation steps and high yield more than 80%. The PQQ sodium salt derivative has the functions of inhibiting GSK-3 activity, reducing senile pigment formation in a transgenic mouse brain, reducing tau protein phosphorylation and the like. Thus, the PQQ sodium salt derivative can be medically used for treating senile dementia and other diseases.

The invention provides a method for preparing battery-level lithium carbonate by using salt lake brine. The method uses salt lake brine in Qinghai as a raw material and uses an ion selectivity separation device to transfer magnesium and lithium ions in the raw material of the brine under the effect of an electric field; when the raw material of the brine passes through a separation membrane with selectivity, monovalent ions, such as the lithium ions and sodium ions can pass through, but divalent ions, such as magnesium ions and calcium ions can be separated, so that lithium-enrichment brine with a low ratio of magnesium to lithium is obtained after the separation; impurities, such as Ca<2+>, K<+>, SO4<2-> and Mg<2+>, in the lithium-enrichment brine with the low ratio of the magnesium to the lithium can be deeply removed; an auxiliary material of a pure alkali solution can be purified; the lithium-enrichment brine after deep removal of the impurities is subjected to three-effect evaporation and concentration after neutralizing with acid; alkali is added into the concentrated lithium-enrichment brine at a certain temperature for lithium sedimentation; and finally, the finished product of the battery-level lithium carbonate can be obtained by drying and cooling after filter press, washing and centrifugal separation washing are carried out. The battery-level lithium carbonate meets the requirements of the local standard DB63/T1113-2012 (brine battery lithium carbonate) in the Qinghai Province.