36results about How to "Has ion conductivity" patented technology

The invention relates to solid electrolyte with double conducting ion networks and a preparation method of the solid electrolyte, and solves the technical problem that existing polyphosphazene solid electrolyte is poor in mechanical property and low in conductivity. The solid electrolyte consists of a porous film and a polyphosphazene electrolyte material, wherein the porous film consists of a polymer, inorganic solid electrolyte and lithium salt; the porous film is a framework of the polyphosphazene electrolyte; and the polyphosphazene electrolyte is a carrier of lithium ions. The invention simultaneously provides a preparation method of the solid electrolyte. The solid electrolyte can be widely used in the field of preparation of the electrolyte.

The invention discloses high-toughness self-repairing physical hydrogel based on dual ion coordination and a preparation method thereof. The physical hydrogel has multi-crosslinking sites. The preparation method of the high-toughness self-repairing physical hydrogel comprises the following steps: dissolving N-carboxyethyl chitosan (CEC), acrylic acid (AA), an FeCl3 water solution and a CaCl2 watersolution into de-ionized water according to a certain ratio and carrying out ultrasonic treatment to obtain a uniform and transparent solution; then carrying out vacuum deoxygenation on the solution;adding an ammonium persulfate (APS) water solution and a catalyst N,N,N',N'-tetramethyldiethylamine (TEMED) in sequence under the protection of nitrogen gas; reacting for at least 4h under the condition of 30 to 50 DEG C, so as to prepare the physical hydrogel. The physical hydrogel provided by the invention has excellent mechanical properties and self-repairing properties; metal ions are introduced so that the gel has certain ionic conductivity; furthermore, an application range of the chitosan based self-repairing hydrogel is expanded; the high-toughness self-repairing physical hydrogel ishopefully applied to fields including wearable flexible electronic devices, soft-bodied robots, biomedicines, aerospace and the like.

The invention discloses high-energy lithium battery cathode slurry, and relates to the technical field of lithium battery production. The slurry mainly aims at solving the problems that the existing cathode slurry has poor viscosity, has insufficiently uniform smearing, and has a direct influence on the performance of a battery. The slurry comprises the following raw materials: a cathode active substance, a conductive agent, an adhesive agent, a defoaming agent, a high-polymer additive, a dispersing additive, a thickening agent, a flame retardant, a buffer solution and the balance of solvent.The invention further discloses a preparation method of the high-energy lithium battery cathode slurry. The high-polymer additive has ionic conductivity, so that the ionic conductivity of a cathode material can be improved; the charge transfer resistance can be reduced; and the rate capability of a lithium ion battery can be improved. The thickening agent is added by combination, so that various components can fully exert effects; the thickening agent can keep the stability of a molecular structure in a long-time standing process, and can keep the performance of the slurry stable; and agglomeration and sedimentation can be avoided.

The invention relates to a method using an iodine solution to treat a lithium surface and application of the method to a solid-state battery and belongs to the technical field of chemical power supplies. The method is characterized in that cathode materials used during lithium electrode production are pure lithium or boron alloy sheets and are cut and pressed into an electrode plate; a solvent for dissolving iodine is tetrahydrofuran, and the weight percentage concentration of the iodine solution is 0.5-30%; the electrode plate is submerged into the iodine solution, and residual liquid is dried through drying to obtain the surface-treated lithium cathode plate. The application of the method to the solid-state battery is characterized in that solid-state battery assembling includes preparing the surface-treated lithium cathode, preparing composite solid electrolyte, preparing an anode and assembling the solid-state battery, and the surface-treated lithium cathode preparation uses the method. The method is simple, evident in effect, applicable to the large-scale and batch processing of lithium cathode surfaces, and the like.

The invention discloses a high-safety lithium ion battery anode material and a preparation method thereof and relates to the field of preparation of battery materials, in particular to the field of ananode material of lithium ion batteries. The anode material is characterized by consisting of a core, a middle layer and an outer layer and adopts a core-shell structure; the middle layer consists ofa functional compound containing nitrogen or phosphorus and a binder; the outer layer consists of asphalt, lithium metaaluminate, carbon nanotubes and a binder. The defects of the lithium ion batteries in the safety performance at present are overcome, the safety performance of the material is improved through coating modification of the material surface, and meanwhile, the rate performance and cycle performance of the material are both considered.

The invention discloses a lithium-ion battery positive pole piece which comprises a current collector and a positive active material layer coating the surface of the current collector, the positive active material layer mainly comprises a positive active material, a conductive agent, additives and a binder, and the additives are aluminum phosphate and lithium phosphate. The preparation method comprises the following steps: (1) uniformly mixing the positive electrode active material, the binder, the conductive agent, the aluminum phosphate, the lithium phosphate and an organic solvent to obtainpositive electrode slurry; and (2) coating the surface of the current collector with the positive pole slurry, and drying to obtain the positive pole piece of a lithium-ion battery. The aluminum phosphate and the lithium phosphate are introduced into the positive active material layer of the positive pole piece of the lithium-ion battery at the same time to serve as the additives, and the comprehensive electrical properties such as high-temperature cycle, high-temperature storage performance and rate capability of the battery are synergistically improved.

The invention belongs to the technical field of lithium ion batteries and particularly relates to cathode slurry of the lithium ion batteries on a production line and a preparation method of the cathode slurry. The cathode slurry comprises 179 parts of cathode active substance, 4 parts of conductive agent and 17 parts of lithium polyacrylate, wherein the lithium polyacrylate is used as the adhesive. Compared with a traditional adhesive, the lithium polyacrylate has ionic conductivity and can integrally the conductivity of the cathode slurry. The cathode slurry is prepared by a subsection ball milling method, the materials are sufficiently stirred to avoid slurry settling, and accordingly the dispersing performance of the cathode slurry is increased greatly. The cathode slurry has the advantages that the cathode slurry is good in dispersity, moderate in viscosity, good in conductivity, low in cost, green, environmentally friendly and widely applicable to the production line for producing lithium ion batteries, the process of the cathode slurry is optimized, and the production efficiency of the lithium ion batteries can be increased while the overall performance of the produced lithium ion batteries can be increased.

The invention relates to a normal-temperature molten salt, an electrode, a cell, an agent for preventing charge-up, and a method for observing sample. An object of the present invention is to provide an ambient temperature molten salt having excellent electron conductivity in addition to ion conductivity. The present invention attains the object by providing an ambient temperature molten salt comprising a first imidazolium salt having a cationic segment represented by the general formula (1) and an anionic segment represented by MX 4 (where M is a transition metal and X is a halogen); and a second salt having a cationic segment as a monovalent cation and an anionic segment as a halogen.

The invention discloses a composite binder for solid-state lithium batteries and a preparation method thereof. The compound binder consists of a high-molecular polymer, lithium salt and an inorganic ceramic fast ion conductor; and the preparation method is to use an organic solvent to dissolve the high-molecular polymer, the lithium salt and the inorganic ceramic fast ion conductor, and generate the organic-inorganic composite binder complexed with the lithium salt and the inorganic fast ion conductor under a certain temperature and stirring. The binder has strong cohesive and adhesive force and high ionic conductivity, and can be used for the preparation of positive and negative pole pieces of solid-state lithium batteries, so that the internal resistance of the pole pieces can be reduced, and the rate performance and cycle life of the solid-state lithium batteries can be enhanced.

The invention relates to a bismuth vanadate functional ceramic and a preparation method thereof. For the bismuth vanadate functional ceramic, the chemical component is BiVO4, the compactness is more than 97%, the dielectric constant is 60 and the dielectric loss is less than 0.005. The preparation method of the bismuth vanadate functional ceramic comprises the following steps: by taking Bi2O3 and V2O5 powder as raw materials, mixing and preforming the raw materials, putting in a closed mold, and carrying out primary sintering; after sintering is completed, grinding into powder and preforming again; then putting into the closed mold again and carrying out secondary sintering; after the sintering is completed, controlling the cooling speed to be less than or equal to 3.3 DEG C / min, and cooling to room temperature so as to obtain the bismuth vanadate functional ceramic.

A preparation method of a polydopamine-coated sodium ion battery positive electrode material comprises the following steps: 1, preparing an MxFeyMnz (OH) 2 precursor through a coprecipitation method, 0 < x < = 0.5, 0 < = y < = 0.33, 0 < z < = 0.5, x + y + z = 1, and M is a transition metal ion; 2, mixing the precursor and a sodium source according to a molar ratio of 1: (1-1.1); the preparation method comprises the following steps: mixing the raw materials, sintering at a high temperature of 850-1100 DEG C for 10-20 hours to obtain the positive electrode material with the general formula of NaaMxFeyMnzO2, and a is more than 0.67 and less than 1.1; 3, adding the positive electrode material into the dispersing solvent, stirring and dispersing to obtain a first turbid liquid, and enabling the concentration of the positive electrode material in the first turbid liquid to be 0.1-0.5 g / mL; when the pH value of the first suspension is stabilized at 8-12, adding dopamine hydrochloride, and reacting for 10-30 hours at normal temperature and normal pressure in a dry environment to obtain a second suspension; and 4, filtering, washing and drying the second suspension to obtain the polydopamine-coated sodium ion battery positive electrode material. The coating layer is high in uniformity and excellent in storage performance in air, the thickness of the polymer coating layer is adjustable, the side reaction of the positive electrode material in electrolyte can be effectively inhibited in the circulation process, and the circulation stability of the sodium ion battery is improved.

The embodiments of the invention provide a material applicable to anode bonding and a preparation method thereof and relate to the field of material preparation. Due to the application of the material, the preheating temperature during anode bonding encapsulation can be lowered, the residual stress of sealing can be reduced, and the quality of microelectronic device encapsulation is improved. The preparation method comprises the steps: uniformly mixing one of LiBF4, LiPF6, TiO2 and Al2O3 and an equal amount of LiClO4, and sintering by adopting a solid-phase reaction method, so as to obtain a complex; and baking the complex and polyethylene oxide (PEO) powder, and then, putting into an agate ball tank for ball milling, thereby preparing the macromolecular solid electrolyte material applicable to anode bonding.

The invention discloses a preparation method of a polyacrylonitrile / ionic liquid / polyaniline conducting composite material, which comprises the following steps: (1) adding aniline into 1-butyl-3-methylimidazolyl hexafluorophosphate, and stirring uniformly to obtain a mixed liquid; (2) putting polyacrylonitrile powder into a high-speed mixer, slowly adding the mixed liquid in the step (1), and stirring for 1-3 hours to obtain a mixture; (3) putting the mixture in the step (2) into a mold, and carrying out hot pressing in a flat vulcanizing bed for 10-30 minutes to obtain a polyaniline-monomer-containing polyacrylonitrile sheet; and (4) immersing the sheet in the step (3) into an acid-doped water solution, reacting for 2-10 hours, cleaning the material with water after the reaction finishes, and drying to obtain the polyacrylonitrile / ionic liquid / polyaniline composite conducting material. According to the method, the aniline and ionic liquid plasticizer 1-butyl-3-methylimidazolyl hexafluorophosphate are blended to synergically plasticize the polyacrylonitrile, and then, melting is performed to prepare the product.

The invention discloses a multifunctional lubricating oil additive. The multifunctional lubricating oil additive is prepared from the following raw materials in part by weight: 50-100 parts of morpholine ionic liquid, 0.8-7.5 parts of a clearing agent, 1.2-2.6 parts of an antirust agent, 7-16 parts of an antioxidant and 0.2-3.8 parts of a foam inhibitor. The multifunctional lubricating oil additive is applied to a steel / steel or steel / aluminum friction pair, thus the antifriction and abrasion-resistant performance of the lubricating oil additive in the friction pair is significantly improved,meanwhile, the extreme pressure bearing performance of the lubricating oil additive is improved, and the friction pair is small in loss and long in service life.

The invention discloses a lithium battery composite diaphragm as well as a preparation method and application thereof. The lithium battery composite diaphragm comprises a base membrane and an oxide solid electrolyte coating layer, the oxide solid electrolyte coating layer comprises oxide solid electrolyte particles. The preparation method comprises the following steps: adding a dispersing agent into a solvent, fully stirring, adding oxide solid electrolyte particles, uniformly grinding to prepare slurry A, continuously adding a thickening agent, a binder and a wetting agent, and fully stirring to prepare slurry B; and coating a base membrane with the slurry B, baking to form an oxide solid electrolyte coating, and rolling to obtain the composite diaphragm. The surface of the base membrane is coated with the oxide solid electrolyte layer to form the composite diaphragm, and the composite diaphragm is adopted during battery assembly, so that the safety performance and the electrochemical performance of the battery can be improved at the same time.

The invention discloses a lithium titanate composite anode material and a preparation method thereof. A coating layer coats the outside of the lithium titanate material; and the coating layer is a mixture of LiAlO2 and SiOx. The LiAlO2 on the surface of the anode material has ionic conductivity; the SiOx forms a solid electrolyte in the charge and discharge processes; the LiAlO2 and the SiOx are beneficial to improvement of the capacity and the rate capability of the anode material; the composite LiAlO2 / SiOx coating layer on the surface covers surface-active sites of the lithium titanate material; and reductive decomposition of the electrolyte is inhibited, so that a gas generated when the composite anode material is used as the anode material for a lithium-ion battery is reduced; and the service lifetime is effectively prolonged. The method is an effective path which can improve the capacity and the rate capability of the lithium titanate composite anode material, can prolong the cycle lifetime and can inhibit gas production of the lithium titanate composite anode material; and the method is friendly to environment, simple in process, low in cost and suitable for large-scale production, and has a wide market prospect.

A rechargeable battery cell having a specific combination of anode, cathode and electrolyte formulation is provided. The electrolyte formulation includes an additive system and a salt system. The additive system includes a first additive containing a sulfonyl group, an anti-gassing agent, and a second additive. The salt system includes a lithium salt and a co-salt. The disclosed electrolyte formulation has reduced gassing and improved performance over a wide temperature range.

The present invention discloses a functional polymer covering liquid liquid lubricant additive, which is a polymer polymer layer on the surface of the ionic liquid on the surface of the ionic liquid, and through the polymer polymer on the polymer polymerThe surface modifier of the layer modifies the carbon -carbon dual -bond sirrius coupling agent is composed of the modified sulfonate layer of the surface of the polymer polymer layer by the cross -linked branches.The functional polymers of the present invention cover the ionic liquid liquid lubricating oil additive in the steel / steel friction vice, which significantly improves the decrease and abrasion resistance of lubricant additives in the friction sideline.Small friction and side loss and long service life.The present invention also disclosed the preparation method and application of functional polymer to cover the ionic liquid lubricant additive.

The invention relates to an ionic conductive rubber and a preparation method thereof. The ionic conductive rubber havs very stable resistivity, is less affected by voltage changes, and maintains goodozone resistance, and high recovery rate and resilience. According to the preparation method, the rubber with ionic conductivity can be obtained by adjusting the component ratio, and complex process conditions are not needed.

The invention discloses a preparation method of a polyacrylonitrile / ionic liquid / polyaniline conducting composite material, which comprises the following steps: (1) adding aniline into 1-butyl-3-methylimidazolyl hexafluorophosphate, and stirring uniformly to obtain a mixed liquid; (2) putting polyacrylonitrile powder into a high-speed mixer, slowly adding the mixed liquid in the step (1), and stirring for 1-3 hours to obtain a mixture; (3) putting the mixture in the step (2) into a mold, and carrying out hot pressing in a flat vulcanizing bed for 10-30 minutes to obtain a polyaniline-monomer-containing polyacrylonitrile sheet; and (4) immersing the sheet in the step (3) into an acid-doped water solution, reacting for 2-10 hours, cleaning the material with water after the reaction finishes, and drying to obtain the polyacrylonitrile / ionic liquid / polyaniline composite conducting material. According to the method, the aniline and ionic liquid plasticizer 1-butyl-3-methylimidazolyl hexafluorophosphate are blended to synergically plasticize the polyacrylonitrile, and then, melting is performed to prepare the product.

The invention discloses an ionic cycloolefin polymer, a photo-self-repairing material based on the ionic cycloolefin polymer, and a preparation method and application of the photo-self-repairing material, and belongs to the technical field of self-repairing materials. Reversible ions exist in the structure of the prepared ionic cycloolefin polymer, and the polymer shows excellent photothermal conversion capacity under infrared light, so that the polymer has efficient repairing performance under light stimulation; and meanwhile, a Grubbs 3 ruthenium catalyst adopted in the preparation process of the self-repairing material is used for catalyzing ring-opening metathesis polymerization, and after the polymerization reaction is completed and a terminating agent is added, a Grubbs 3 derivative obtained by reacting the Grubbs 3 ruthenium catalyst with the terminating agent also has an excellent photothermal effect, so that a photothermal conversion agent does not need to be additionally added, and the application of the Grubbs 3 ruthenium catalyst is widened.

The invention belongs to the technical field of sensor materials, and particularly relates to a double-network double-ion conductive transparent electronic skin sensor material and a preparation method thereof. The preparation method of the double-network double-ion conductive transparent electronic skin sensor material comprises the steps that the surface of nanocellulose is wrapped with anthocyanin and then added into a guar gum glycerin aqueous solution for uniform mixing after being absorbed by iron ions; and after borax solution gelation is carried out, the double-network double-ion conductive electronic skin sensor material is prepared. According to the double-network double-ion conductive transparent electronic skin sensor material and the preparation method thereof, a nanocellulose / anthocyanin composite is utilized to enable guar gum hydrogel to have ultra-sensitive electrical conductivity, so that the guar gum hydrogel can be used as a novel electronic skin sensor material.

The invention discloses a lithium titanate composite anode material and a preparation method thereof. A coating layer coats the outside of the lithium titanate material; and the coating layer is a mixture of LiAlO2 and SiOx. The LiAlO2 on the surface of the anode material has ionic conductivity; the SiOx forms a solid electrolyte in the charge and discharge processes; the LiAlO2 and the SiOx are beneficial to improvement of the capacity and the rate capability of the anode material; the composite LiAlO2 / SiOx coating layer on the surface covers surface-active sites of the lithium titanate material; and reductive decomposition of the electrolyte is inhibited, so that a gas generated when the composite anode material is used as the anode material for a lithium-ion battery is reduced; and the service lifetime is effectively prolonged. The method is an effective path which can improve the capacity and the rate capability of the lithium titanate composite anode material, can prolong the cycle lifetime and can inhibit gas production of the lithium titanate composite anode material; and the method is friendly to environment, simple in process, low in cost and suitable for large-scale production, and has a wide market prospect.

The invention discloses a composite binder for solid-state lithium batteries and a preparation method thereof. The composite binder is composed of a high molecular polymer, a lithium salt and an inorganic ceramic fast ion conductor. The preparation method is to dissolve the high molecular polymer with an organic solvent. compound, lithium salt and inorganic ceramic fast ion conductor, under certain temperature and stirring conditions, an organic-inorganic composite binder complexed with lithium salt and inorganic fast ion conductor is formed. The binder has strong cohesive force and adhesion, as well as high ionic conductivity, and is used for the preparation of positive and negative pole pieces of solid-state lithium batteries, which can reduce the internal resistance of the pole pieces and improve the rate performance of solid-state lithium batteries. and cycle life.

The invention provides a different-side-chain type anion exchange membranes for a fuel cell and a preparation method of the anion exchange membranes, and belongs to the field of polymer chemistry andanion exchange membrane fuel cells. According to different molar ratios of monomers, the molar ratio of a methyl hydroquinone monomer to an allyl bisphenol S monomer is a:b (a and b are both integersof 1-9 and a+b is equal to 10); the invention also provides a preparation method of the different-side-chain type anion exchange membranes, which comprises the following steps: conducting polymerizingaccording to different molar ratios of monomers by utilizing nucleophilic polycondensation reaction to form polyaryletherketone containing different proportions of the methyl hydroquinone monomer tothe allyl bisphenol S-containing monomer, thereby preparing the different-side-chain type anion exchange membranes. The highest ionic conductivity of the different-side-chain type anion exchange membranes at 80 DEG C can reach 0.137 S / cm.