42 results about "Monofluorophosphate" patented technology

This invention provides a nonaqueous electrolyte which is excellent in discharge load properties, as well as in high-temperature storage stability, cycling characteristics, high capacitance, continuous charge properties, storage stability, gas evolution suppression in continuous charging, charge/discharge properties at a high current density, discharge load properties and the like, and a rechargeable battery with a nonaqueous electrolyte. The nonaqueous electrolyte contains a monofluorophosphate and/or a difluorophosphate and further contains a compound having a specific chemical structure orspecific properties.

A nonaqueous electrolytic solution that can provide a battery that is low in gas generation, has a large capacity, and is excellent in storage characteristics and cycle characteristics contains an electrolyte and a nonaqueous solvent dissolving the electrolyte and further contains 0.001 vol % or more and less than 1 vol % of a compound represented by Formula (1) in the nonaqueous solvent. Alternatively, the nonaqueous electrolytic solution contains 0.001 vol % or more and less than 5 vol % of a compound represented by Formula (1) in the nonaqueous solvent and further contains at least one compound selected from the group consisting of cyclic carbonate compounds having carbon-carbon unsaturated bonds, cyclic carbonate compounds having fluorine atoms, monofluorophosphates, and difluorophosphates.

In Formula (1), R¹ to R³ each independently represent an alkyl group of 1 to 12 carbon atoms, which may be substituted by a halogen atom; and n represents an integer of 0 to 6.

A subject is to provide a nonaqueous electrolyte excellent in cycle performances such as capacity retention after cycling, output after cycling, discharge capacity after cycling, and cycle discharge capacity ratio, output characteristics, high-temperature storability, low-temperature discharge characteristics, heavy-current discharge characteristics, high-temperature storability, safety, high capacity, high output, high-current-density cycle performances, compatibility of these performances, etc. Another subject is to provide a nonaqueous-electrolyte secondary battery employing the nonaqueouselectrolyte. The subjects have been accomplished with a nonaqueous electrolyte which contains a monofluorophosphate and/or a difluorophosphate and further contains a compound having a specific chemical structure or specific properties.

A nonaqueous electrolyte secondary battery includes a positive electrode having a positive-electrode active material, a negative electrode having a negative-electrode active material, and a nonaqueous electrolytic solution having a nonaqueous solvent dissolving a solute. The negative-electrode active material includes powdered silicon and/or a silicon alloy, the nonaqueous electrolytic solution includes additives composed of at least one fluorinated lithium phosphate selected from the group consisting of lithium monofluorophosphate, lithium difluorophosphate, and lithium trifluorophosphate and a diisocyanate compound, and the nonaqueous solvent includes a chain carbonate compound.

The invention discloses a composite reinforced concrete corrosion-inhibiting agent and a preparation method thereof. The corrosion-inhibiting agent is prepared from the following raw materials in percentage by mass: 3-12% of potassium monofluorophosphate, 15-35% of acid, 3-9% of zinc gluconate, 20-40% of low-molecular-weight alcohol amine and the balance of water. The preparation method comprises the following steps of: firstly mixing acid, zinc gluconate, low-molecular-weight alcohol amine and water; then stirring until the solution is clear; cooling to room temperature, and then adding potassium monofluorophosphate; and stirring until potassium monofluorophosphate is fully dissolved to obtain the composite reinforced concrete corrosion-inhibiting agent. The preparation method of the corrosion-inhibiting agent has easily available raw materials and is simple; by using the corrosion-inhibiting agent to prepare sea sand reinforced concrete, the obtained reinforced concrete has good corrosion resistance and certain enhancing effect on delayed coagulation; and aiming at the circumstances of the gradual increase of sea sand use amount and severe corrosion of concrete reinforcement bars, the composite corrosion-inhibiting agent has excellent application prospects.

A subject is to provide a nonaqueous electrolyte excellent in cycle performances such as capacity retention after cycling, output after cycling, discharge capacity after cycling, and cycle discharge capacity ratio, output characteristics, high-temperature storability, low-temperature discharge characteristics, heavy-current discharge characteristics, high-temperature storability, safety, high capacity, high output, high-current-density cycle performances, compatibility of these performances, etc. Another subject is to provide a nonaqueous-electrolyte secondary battery employing the nonaqueous electrolyte. The subjects have been accomplished with a nonaqueous electrolyte which contains a monofluorophosphate and/or a difluorophosphate and further contains a compound having a specific chemical structure or specific properties. Besides, in the invention, the compound of nonaqueous-electrolyte liquid having the special chemical structure or special characteristics can be used to solve the above mentioned subjects.

The invention discloses a positive electrode electrolyte of a high-concentration all-vanadium redox flow battery. The electrolyte comprises vanadium ions, sulfuric acid and additives, and the additives comprise one or more of boric acid, borate, phytic acid, phytate, tributyl phosphate, perfluorobutyl sulfonic acid, perfluorobutyl sulfonate, hexafluorophosphoric acid, hexafluorophosphate, monofluorophosphoric acid, monofluorophosphate, difluorophosphoric acid, difluorophosphate and pyridinium propanesulfonate. The concentration of V(V) and/or V(IV) in the positive electrode electrolyte of theall-vanadium redox flow battery is within a relatively wide concentration range, the stability of the positive electrode electrolyte is obviously improved, and the all-vanadium redox flow battery canadopt an electrolyte with higher V(V) and/or V(IV) concentration and is suitable for a higher temperature range, so that the energy density and the performance of the all-vanadium redox flow battery are obviously improved.

The invention discloses an eldecalcitol soft capsule, and specifically relates to the technical field of pharmaceutical preparations. The eldecalcitol soft capsule includes a content and a capsule shell; the content includes the following raw materials: eldecalcitol, glucosamine, threonine, monofluorophosphate, and refined camellia oil; the capsule shell includes the following raw materials: gelatin, glycerin, microcrystalline cellulose, malic acid and lemon yellow; and a preparation method of the soft capsule includes the following preparation steps: capsule shell preparation, content preparation, pelleting, two-stage vacuum drying, inspection and packaging. The eldecalcitol soft capsule prepared by the raw material formula of the invention can reach a maximize drug utilization rate, enhance the synthetic effect on cartilage matrix protein, promote generation of collagen, reduce calcium loss and have a better treatment effect on osteoporosis; and a special stirring manner is adopted in the preparation process of the capsule shell and the content, so that the multiple variable-speed stirring mixing of the raw materials can be realized, and the content deviation of effective substances in each soft capsule is smaller to ensure the drug effect.

The invention discloses a preparation method of lithium monofluorophosphate. The preparation method comprises the following steps: S1, preparation of monofluorophosphoric acid: reacting phosphorus pentoxide with hydrofluoric acid in a closed reactor made of a fluorine-resistant material to obtain monofluorophosphoric acid; S2, separating and purifying the product obtained in the step S1 through vacuum distillation; and S3, searching a lithium source, reacting the lithium source with the product obtained in the step S2, after the reaction, evaporating, concentrating and crystallizing the solution to obtain crystals, namely lithium monofluorophosphate, and drying the crystals in vacuum to obtain a lithium monofluorophosphate product; wherein the mass fraction of hydrofluoric acid is 65%-75%;the fluorine-resistant material of the closed reactor can be selected from one of titanium-nickel alloy, hastelloy, monel alloy and Inconel alloy; wherein the closed reactor made of the fluorine-resistant material in the step S1 is provided with a solid and liquid feeding device; the preparation method is simple in process and few in by-products, the reactions are easy to trigger, and the productpurity is high.

The invention discloses a compound preparation used for treating radiation bone injuries and a preparing method thereof.The compound preparation comprises calcium gluconate, monofluorophosphate glutamine, rocaltrol, nafcillin, oxacillinum natricum, durabolin, glutathione, calcitonin, icariin, vitamin AD, stanozolol, corticosteroid, sucralfate, dexamethasone and lipopolysaccharide.The compound preparation has the effects of resisting radiation, enhancing immunity and promoting bone cell metabolism, can effectively prevent complications such as radiation osteoporosis, radiation marrow, radiation fracture, osteoradionecrosis and radiation dysostosis, the formula of the compound preparation is novel and unique, the curative effect is good, cost is low, the side effect is small, and the compound preparation is widely suitable for the radiation bone injuries.

The invention discloses a preparation method of monofluorophosphate, which comprises the following steps: a stabilizer is added into an obtained monofluorophosphate reaction solution, the stabilizer is selected from at least one of metal oxide, anhydrous carbonate and anhydrous bicarbonate, and the structure of the monofluorophosphate is as shown in the following formula (I), in the formula (I), R is selected from C1-C6 alkyl groups, C1-C6 fluoroalkyl groups, C2-C6 alkenyl groups and C2-C6 fluoroalkenyl groups. The prepared monofluorophosphate product is high in yield, high in purity, low in acidity and low in impurity content.

The present invention provides non-aqueous electrolytic solution for secondary battery and the non-aqueous electrolytic solution secondary battery that has used this non-aqueous electrolytic solution respectively, and this non-aqueous electrolytic solution for secondary battery contains for ethylene carbonate, propylene carbonate, The solubility of dimethyl carbonate, diethyl carbonate, ethyl methyl carbonate etc. is high, forms the electrolyte of coating film of good quality at positive electrode and negative electrode interface; Specifically, the present invention provides secondary battery non-aqueous electrolytic solution, It is characterized in that it contains a non-aqueous solvent containing a monofluorophosphate salt represented by the following general formula 1 or 2, and a lithium salt as a solute. The details of the general formula 1 or 2 are as described in this specification.