22 results about "High electrolytes" patented technology

The invention relates to the technical field of solid-state batteries, in particular to oxyhalide solid-state electrolyte as well as a preparation method and application thereof. The method comprises the following steps: taking molten salt LiaMbXc as a raw material, reacting with an oxide AdOf in a molten state, removing steam impurities by utilizing a high-temperature vacuumizing mode, and cooling to prepare the oxyhalide solid electrolyte; according to the invention, the molten salt raw material is molten at high temperature to form the ion melt, and the oxygen element is introduced to replace part of halogen, so that the hardness of the target electrolyte is reduced after cooling, the deformability at room temperature is improved, and the obtained electrolyte is high in conductivity and wide in antioxidant electrochemical window. The prepared oxyhalide solid electrolyte is used for preparing a positive electrode, the adhesion force between the electrolyte and positive electrode material particles, the actual microscopic contact area and the ion migration rate are improved through melt permeation, the problem of a positive electrode interface is effectively relieved, and the electrochemical performance of an all-solid-state battery is improved.

The invention provides an electrolyte and a secondary battery. The electrolyte comprises an electrolyte salt, an electrolyte additive and the balance of an organic solvent, and the electrolyte additive comprises a first additive and a second additive; wherein the first additive comprises an isocyanate compound, and the second additive comprises a lithium aluminum hydride-based compound and / or an aluminum hydride organic compound. The combination of the first additive and the second additive provided by the invention not only can efficiently remove trace moisture and hydrofluoric acid impurities in the electrolyte and improve the stability of electrolyte salt, but also can improve the film-forming stability and film-forming quality of an SEI (Solid Electrolyte Interphase) film and remarkably improve the cycle performance and high-temperature storage performance of a secondary battery.

The application belongs to the technical field of aluminum smelting, and specifically provides a method for detecting initial crystallization temperature of electrolyte, which comprises the following steps: preparing electrolyte powder from electrolyte to be detected, melting the electrolyte powder to obtain liquid electrolyte; gradually reducing the temperature of the liquid electrolyte, and measuring the viscosity of the liquid electrolyte to obtain the viscosity value of the current temperature every time the temperature is reduced by a preset temperature; drawing a viscosity curve of the liquid electrolyte based on the viscosity values of various temperatures, wherein the viscosity curve is used to represent the relationship between the viscosity of the liquid electrolyte and the temperature; and determining the initial crystallization temperature of the electrolyte to be detected based on the viscosity curve. The technical scheme provided by the application can improve the accuracy of the detection of the initial crystallization temperature of the electrolyte.

The utility model relates to the technical field of electrolyte sampling, in particular to an electrolyte sampling device which comprises a rod, an auxiliary rod and a sampling bottle arranged at the lower end of the main rod, and a bottle opening of the sampling bottle faces upwards; the sampling bottle is provided with a turning cover for controlling opening and closing of a bottle opening of the sampling bottle, the turning cover is rotationally connected with the sampling bottle through a first rotating shaft, the first rotating shaft is arranged in the horizontal direction and is perpendicular to the auxiliary rod, and the lower end of the auxiliary rod is connected to the turning cover and is spaced from the first rotating shaft; the opening of the sampling bottle is provided with a limiting part which protrudes inwards in the radial direction, and when the opening of the sampling bottle is closed by the turning cover, the limiting part abuts against the turning cover upwards or downwards to limit the turning cover. By arranging the turning cover rotationally connected with the sampling bottle and connecting the turning cover to the lower end of the auxiliary rod, a sampler controls the turning cover to rotate forwards and backwards by operating the auxiliary rod, so that opening and closing control of the opening of the sampling bottle is realized, the sampling bottle can extend into a specified depth position for sampling, the electrolyte sampling quality is improved, and the accuracy of a detection result is improved.

The invention discloses a eutectic gel electrolyte and a preparation method and application thereof, and belongs to the technical field of sodium-lithium metal batteries. N-methylacetamide is used as a hydrogen bond acceptor, p-fluorophenylboronic acid is used as a hydrogen bond donor to form a deep eutectic solvent, and a low-volatility system is constructed; the three-dimensional gel network is formed through in-situ cross-linking of the trifunctional acrylate and the difunctional methacrylate, so that electrolyte leakage is inhibited, the thermal stability and intrinsic safety of an electrolyte system are improved, meanwhile, a continuous ion channel is constructed microcosmically, ion conduction and structural stability are both considered, and long-term cycle reliability is guaranteed. While good mechanical strength is maintained, the ionic conductivity of the electrolyte at room temperature reaches about 2.3 mScm <-1 >, which reaches a relatively high level in a gel electrolyte system. The fluoroethylene carbonate film-forming additive is introduced, so that side reaction is effectively inhibited, dendritic crystal growth is inhibited, and the cycle life of the battery is remarkably prolonged.

The invention discloses a porphyrin framework polymer as well as a preparation method and application thereof. The porphyrin framework polymer is synthesized by taking tetra (5-bromothienyl) porphyrin as an intermediate, introducing thiophene substituents into four meso sites of porphyrin and then carrying out Stille coupling reaction on the porphyrin and a thiophene tin reagent. The preparation process is mild, purification is simple and convenient, the obtained polymer has high electrolyte solution solubility resistance and excellent electron conductivity, the technical problems that an organic micromolecule active material is prone to dissolution loss in an organic electrolyte, poor in conductivity and the like are effectively solved, and meanwhile the ion transmission capacity of the material is remarkably improved. The porphyrin framework polymer is used as a positive electrode active material and is matched with a metal sodium negative electrode and a NaPF6 carbonate electrolyte to assemble the battery, no obvious capacity fading is caused under 10A g <-1 > large current for about 7000 cycles, the specific capacity is high, the multiplying power and the long cycle performance are excellent, and the porphyrin framework polymer is suitable for a large-scale long-acting energy storage sodium ion battery.

The invention belongs to the technical field of water electrolysis hydrogen production, and particularly relates to a mixed matrix membrane and a preparation method thereof. The preparation method comprises the following steps: adding PMDETA and polybiphenyl isatin into a solvent I for dissolving, and filtering to obtain a clear solution; pouring the clarified solution into a culture dish, and placing the culture dish into a drying oven to volatilize the solvent I to obtain an unmodified mixed matrix membrane; and dipping the unmodified mixed matrix membrane in the oil phase solution, taking out the membrane after dipping, cleaning, and drying to obtain the modified mixed matrix membrane. By adjusting the content of the PMDETA and regulating the reaction sites of the PMDETA and the TBB, the interaction between the membrane and the alkali liquor is enhanced, the wettability between the membrane and the alkali liquor is improved, and absorption and retention of an electrolyte solution are promoted. The modified mixed matrix membrane has relatively high ionic conductivity, relatively high electrolyte uptake rate and relatively low swelling degree, and shows excellent performance in AWE.

The invention discloses a hydrazine gas leakage monitoring device and a monitoring method thereof, and relates to the technical field of hydrazine gas monitoring devices. According to the invention, through cooperation of the display and the alarm, a leakage accident can be timely warned, a real-time state can be displayed, and the capability of leakage detection and early warning is realized; through cooperation of a micro-heating structure and an ultraviolet electrolysis structure, microorganisms are conveniently killed, so that microorganism breeding is avoided, and the capacity of prolonging the service life of the equipment is achieved; finally, the problem that the electrolyte is rapidly disabled due to bacteria breeding in the electrolyte of the existing equipment is solved; after heating is completed, temperature data of the heating wire and the electrolyte are analyzed through the analysis module, the influence of the residual temperature of the heating wire on the temperature of the electrolyte is considered, the heating process of the heating wire is accurately controlled, it is ensured that the temperature of the electrolyte is stabilized at a preset value, and damage to electronic elements caused by too high temperature of the electrolyte is avoided; and accelerated volatilization and decomposition of the electrolyte due to too high temperature are prevented.

The invention provides a cellulose-based sodium ion diaphragm with a double-layer structure and a preparation method of the cellulose-based sodium ion diaphragm, and belongs to the technical field of sodium ion battery diaphragms. According to the diaphragm disclosed by the invention, micron-sized cellulose fibers, nano-sized cellulose fibers, aramid fibrids, aramid chopped fibers and nano Al2O3 are used as main raw materials, and a double-flow-channel synchronous forming process based on a wet-process non-woven fabric process is adopted; and the integrated double-layer composite diaphragm with the rigid corrosion-resistant protective layer facing the positive electrode side and the compact elastic buffer layer facing the negative electrode side is prepared. The diaphragm disclosed by the invention has excellent thermal stability, extremely high electrolyte wettability, good mechanical strength and an adjustable porous structure, the safety performance and the electrochemical performance of the sodium ion battery can be effectively improved, and the preparation process takes water as a medium, is green and environment-friendly and is easy for large-scale production.

The chemical composition of the solid electrolyte is A (M1bM2cM3dM4e) Fn, A is at least one of Li, Na and K, M1, M2, M3 and M4 are independently selected from one of Ga, Y, In, Mg, Sr, Sc, Al, Fe, Zr, Hf, Ta, Nb, W, Mn, Zn, Co, Mo, Sn, Ca, Pb, Ti, Ru and lanthanide series metal elements, b, c, d and e are molar fractions, b + c + d + e = 1, 0.1 < = b < = 0.3, 0.1 < = d < = 0.3, 0.1 < = e < = 0.3, 0.3 < = c < = 0.5, n = 1 + b epsilon 1 + c epsilon 2 + d epsilon 3 + e epsilon 4, epsilon 1, epsilon 2, epsilon 3 and epsilon 4 are M1, M2 The high-entropy solid solution with an extremely stable structure is formed by utilizing multiple elements, the comprehensive performance is improved through a multi-component synergistic effect, and the performance of the electrolyte is remarkably improved. When the solid electrolyte is applied to the semi-solid lithium metal battery, the rate capability and the cycle performance of the battery can be remarkably improved.

The invention discloses a nitrogen and fluorine modified halide solid electrolyte material as well as a preparation method and application thereof. The structural general formula of the solid electrolyte material is Li < 3x > MN < x > Cl < 5-y > F < y >, wherein M is one or more elements selected from Ta, Nb, Zr, Hf, La and Ce; wherein x is greater than or equal to 0.1 and less than or equal to 0.6, and y is greater than or equal to 0 and less than or equal to 2. Nitrogen ions (N3) and fluorine ions (F) are introduced into a single anion chloride ion (Cl) electrolyte framework for synergistic modification, N3 and M are utilized to form an M-N unit, a local coordination environment is changed to promote amorphous transformation of the electrolyte, and the ionic conductivity is improved. And meanwhile, Cl is partially replaced by virtue of extremely high electronegativity of F, so that the oxidation resistance of the electrolyte is improved, and an electrochemical window is widened. The electrolyte is synthesized by adopting a mechanical ball milling method, the process is simple, the cost is relatively low, and the obtained electrolyte material has excellent interface compatibility and (electro) chemical stability under high voltage.

The utility model discloses a vibration cleaning mechanism for electrolyte cleaning, which belongs to the field of electrolyte cleaning and comprises a frame and a steel claw to be cleaned, two symmetrically arranged guide mechanisms are arranged on the frame, each guide mechanism comprises a base, two fixing rods are fixedly connected onto the base, a plurality of guide rods are fixedly connected to the inner sides of the fixing rods, and the guide rods are fixedly connected onto the frame. And a first knocking mechanism is movably arranged on the guide rod. The device has the beneficial effects that the first knocking mechanism and the second knocking mechanism are arranged, simultaneous driving is achieved through the arrangement of the power mechanism, when vibration cleaning is conducted on the to-be-cleaned steel claw, two sets of knocking heads knock and vibrate electrolytes at the first position and the third position, two sets of knocking blocks knock electrolytes at the second position and the fourth position, and staggered knocking facilitates loosening of the electrolytes; and meanwhile, a scraping mechanism is arranged on a mounting seat, so that a scraping plate can perform downward scratching with certain force after hammering of a knocking head, and the electrolyte cleaning effect is further improved.

The application discloses layered accordion structure Bi-MOF and a preparation method and application thereof, and relates to the technical field of electrode materials. The preparation method of the Bi-MOF comprises the following steps: dissolving bismuth nitrate and m-benzenetricarboxylic acid in methanol, and heating to obtain an initial Bi-MOF; and reacting the initial Bi-MOF with a weak base, wherein the weak base comprises at least one of ammonia, hexamethylenetetramine and tetramethylammonium hydroxide, to obtain the Bi-MOF. The Bi-MOF micro-morphology and particle size can be adjusted by adding the weak base, the obtained Bi-MOF sample has variable crystallinity and higher specific surface area, more electrochemical reaction sites can be exposed, the penetration rate of an electrolyte is improved, and the capacitive performance of the Bi-MOF is improved. In the preparation process, no surfactant needs to be added, the consumption of a large amount of water in the washing process is reduced, and the problem of environmental pollution caused by the large emission of the surfactant is solved.

The invention provides an electrolyte, a battery, a battery pack and electric equipment, the electrolyte comprises a solvent, an electrolyte salt and an infiltration additive, the infiltration additive has a special structure, an electrode can have high electrolyte wettability, and the low temperature performance, the rate capability and the cycle performance of the battery are effectively improved.

The utility model discloses a quick stirring device for electrolytic manganese, which relates to the technical field of stirring devices and comprises a stirring tank, a stirring motor is arranged at the top of the stirring tank, and the stirring motor is connected with a stirring paddle; a shaft rod and paddle blades are arranged on the outer side of the stirring paddle; the stirring motor drives the stirring paddle to stir electrolytic manganese, so that manganese ions can be uniformly distributed in the whole electrolyte; through stirring, sufficient manganese ion supply on the surface of the electrode can be ensured all the time, so that a stable electrolytic reaction rate is maintained; the locking sleeve can also drive the cross-shaped rotating frame to rotate, and a plurality of shaft rods and paddle blades arranged on the outer side of the cross-shaped rotating frame can fully stir the electrolyte, so that the stirring range of the electrolyte is widened, and the stirring effect is improved; and the concentration difference between the electrode surface and the electrolyte main body can be effectively reduced, so that the electrolytic reaction is closer to an ideal state. According to the utility model, the problems of uneven quality of the manganese deposition layer caused by local concentration change, such as local looseness, uneven impurity content and the like, can be effectively avoided.

The invention discloses a diaphragm with high electrolyte wettability, a preparation method of the diaphragm and a lithium battery, and relates to the technical field of preparation of battery diaphragms. According to the preparation method, high-temperature-resistant polyether polyol containing a benzene ring reacts with isophorone diisocyanate and citric acid, then 1-allyl cyclohexanol is used for end capping, a modifier containing carboxyl and double bonds is obtained and marked as a double-bond modifier, the double-bond modifier and polyethylene are copolymerized, modified polyethylene is obtained, and the modified polyethylene is prepared. Carboxyl in the double-bond modifier improves the wettability of polyethylene, and meanwhile, a benzene ring endows good high-temperature stability; in addition, the surface of the diaphragm prepared from modified polyethylene is coated with a hydrophilic flame-retardant coating, double bonds in a coating system are initiated by ultraviolet light to polymerize, a hydrophilic flame-retardant layer is formed, the diaphragm is endowed with flame retardance under the condition that the wettability of the diaphragm is not affected, and the safety of the battery is further improved.

This invention discloses a method for preparing a sodium battery composite solid electrolyte, comprising the following steps: S1, preparing a modified solid sodium electrolyte; S2: completely dissolving a polymer in an organic solvent, adding sodium salt and the modified solid sodium electrolyte prepared in S1, stirring to obtain a mixed solution; S3, coating the prepared mixed solution onto the surface of an electrode sheet, and obtaining the sodium battery composite solid electrolyte after drying and hot pressing. The modified solid sodium electrolyte of this invention contains active functional groups such as hydroxyl and amino groups on its surface, which can react with the isocyanate active groups of the polymer solid electrolyte to form urethane and urea covalent bonds, improving the dispersibility of the solid sodium electrolyte in the polymer solid electrolyte. Simultaneously, the composite solid electrolyte forms a cross-linked network structure, reducing the regularity of the polymer molecular chain arrangement, significantly reducing the crystallinity of the polymer solid electrolyte, improving the ionic conductivity of the electrolyte, and also improving the mechanical strength and thermal stability of the composite solid electrolyte.

The present application relates to the technical field of food, in particular to a transparent protein electrolyte sports drink, comprising the following raw materials: nanofiltration filtrate, sugar, decolorized and deacidified apple concentrate juice, whey protein, acidity regulator, blueberry extract, needle cherry concentrate powder, natural lemon essence and water; a preparation method comprising the following steps: mixing the nanofiltration filtrate, whey protein, sugar and natural lemon essence to obtain a liquid A; mixing the decolorized and deacidified apple concentrate juice, acidity regulator, blueberry extract, needle cherry concentrate powder and water to obtain a liquid B; mixing the liquid A after cooling and the liquid B to obtain a liquid C; sterilizing, degassing, cooling and filling the liquid C to obtain the transparent protein electrolyte sports drink. The prepared drink has high electrolyte content, attractive color, refreshing taste and no astringent feeling, and presents bright transparent pink within 6 months of normal temperature shelf life.

The invention provides a method for treating acid mine wastewater by coupling iron-carbon micro-electrolysis with H2O2 mineralization, and belongs to the technical field of sewage treatment. The strong acidity of high H < + > of AMD and the high electrolyte characteristic containing SO4 < 2-> and Fe < 3 + > provide natural conditions for Fe / C internal electrolysis, and Fe < 2 + > generated by Fe / C reaction provides a Fe source for H2O2 mineralization; h2O2 quickly oxidizes Fe < 2 + > into Fe < 3 + >, and the Fe < 3 + > is combined with SO4 < 2-> to generate Schwertmannite, so that fixation and resource recovery of Fe and SO4 < 2-> are realized; pollutant removal and resource recovery are enhanced through cyclic operation; finally, the harmless treatment of the effluent is realized through lime neutralization. After Fe / C micro-electrolysis and H2O2 oxidation Schwertmannite multi-stage series connection, AMD neutralization is carried out through a traditional lime neutralization process, so that the use amount of lime and the yield of neutralized sludge can be effectively reduced, multiple benefits of resource recovery, toxic heavy metal and sulfate removal, lime use and sludge yield reduction are further achieved, and the method is suitable for industrial production. The efficient, safe and economical treatment of the AMD wastewater is realized.

The present application provides a high solid content stable pure liquid type dishwashing bead composition and a preparation method thereof. In the high concentration system with a solid content of 65-75%, the present application uses xanthan gum as a three-dimensional network structure support, and through a high shear homogenization process, the xanthan gum molecular chain is fully stretched, and the originally incompatible components such as non-ionic surfactants, acrylic polymers and high-concentration chelating agents are uniformly 'locked' in the gel network, forming a high solid content stable pure liquid type dishwashing bead composition, solving the technical problem that the prior art cannot simultaneously stabilize the high content non-ionic surfactants, polymers and chelating agents under the conditions of high solid content (≥65%) and high electrolyte, and at the same time, realizing the near-neutral mildness and tableware protection.

This invention relates to the field of electrochemical technology, specifically to an electrolytic capacitor, comprising a capacitor element, a solid electrolyte, and an additive, wherein the additive is R1 (COOCO). m The compound shown in the structural formula, wherein R1 is a substituted or unsubstituted saturated or unsaturated hydrocarbon group, and m is an integer greater than or equal to 1. The electrolytic capacitor of the present invention contains R1 (COOCO). m The compound shown in the structural formula can react with water to absorb moisture, and the acid produced after the reaction can also improve the stability of the electrolyte, reduce or eliminate the moisture that is already present in the capacitor or that enters during use, effectively reduce the sensitivity of electrolytic capacitors to moisture during use, and extend the service life of the capacitor, especially in high temperature and high humidity environments.