35results 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 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 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.

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 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.