11results about How to "Good interface wettability" patented technology

The invention discloses a composite solid electrolyte diaphragm which comprises a bacterial cellulose membrane, fluorinated metal modified PEO electrolyte particles and functional group modified particles, and the fluorinated metal modified PEO electrolyte particles and the functional group modified particles are loaded in a three-dimensional network structure of the bacterial cellulose membrane. The functional group modified particles are functional group modified silicon dioxide particles and functional group modified LATP particles, the functional group modified silicon dioxide particles uniformly wrap the functional group modified LATP particles, and fluorinated metal of the fluorinated metal modified PEO electrolyte particles is combined with functional groups of the functional group modified particles through coordinate bonds. The invention also discloses a preparation method of the electrolyte diaphragm and a battery with the electrolyte diaphragm. The ionic conductivity of the electrolyte diaphragm is improved.

The invention is applicable to the technical field of electrochemical energy storage, and provides a mixed aqueous electrolyte containing long-chain fatty acid zinc salt and application thereof.The mixed aqueous electrolyte comprises a solvent and zinc salt, the solvent is a mixture of deionized water and a non-aqueous organic solvent, and the zinc salt comprises the long-chain fatty acid zinc salt and other zinc salt; the concentration of the long-chain fatty acid zinc salt is 0.5-2 mol / L, the concentration of the other zinc salt is 0-5 mol / L, and the structural formula of the long-chain fatty acid zinc salt is as follows: Zn (R-COO) 2; wherein R represents a hydrophobic long-carbon-chain organic group, and C is more than or equal to 6 and less than or equal to 30. Long-chain fatty acid zinc is introduced to serve as zinc salt to supplement the concentration of Zn < 2 + > and serve as an interface modifier due to the unique molecular structure (long hydrophobic carbon chain and hydrophilic carboxyl) of the long-chain fatty acid zinc.

The utility model provides a formation nail, a battery top cover and a battery, the formation nail comprises a nail column, an exhaust channel is arranged in the nail column in a penetrating manner, a one-way exhaust assembly is arranged in the exhaust channel, the one-way exhaust assembly is connected with the inner wall of the exhaust channel, the exhaust channel comprises an air inlet end and an air outlet end, and the air inlet end is connected with the air outlet end. The one-way exhaust assembly is configured to only allow gas entering the exhaust channel from the gas inlet end to flow through the one-way exhaust assembly and then be exhausted from the gas outlet end, and in other words, the one-way exhaust assembly can achieve one-way exhaust of the gas. In practical application, gas generated in the aging stage of a battery cell can enter the exhaust channel from the gas inlet end and then is exhausted from the gas outlet end in time after passing through the one-way exhaust assembly, the interface infiltration effect in the aging process is improved, the film forming quality is improved, meanwhile, the one-way exhaust assembly only allows one-way exhaust, external steam can be blocked, and the film forming quality is improved. And it is ensured that external steam cannot enter the battery cell after passing through the one-way exhaust assembly.

The invention discloses a thermotropic super-strong adhesive which is a double-component adhesive prepared by taking dihydroxyl ionic liquid and amino acid or a guanidyl derivative or a guanidine-containing polymer as raw materials, mixing in a grinding or solution precipitation manner and then carrying out heat treatment, and the thermotropic super-strong adhesive is high in adhesive strength and has good tolerance to an organic solvent; the bonding strength is not obviously attenuated after long-time soaking in an organic solvent, and bonding matrixes comprise different matrixes such as stainless steel, copper, iron, zinc and aluminum. The adhesive disclosed by the invention is simple in preparation process, low in cost, green, pollution-free and degradable in raw materials, and is an adhesive meeting sustainable green and environment-friendly requirements.

This invention discloses a method for preparing a surface-modified oxide solid electrolyte, comprising the following steps: S1: reacting an oxide solid electrolyte matrix with a bifunctional ionic liquid modifying compound in the presence of a catalyst under an inert atmosphere to obtain an intermediate of a surface-grafted ionic liquid monomer; S2: subjecting the intermediate obtained in step S1 to a free radical copolymerization reaction with an ethylene glycol divinyl ether monomer in the presence of an initiator, thereby in-situ copolymerizing the grafted ionic liquid monomer and the ethylene glycol divinyl ether monomer to form a polymer coating layer, thus obtaining the surface-modified oxide solid electrolyte. The preparation method of this invention not only eliminates interfacial side reactions through chemical bonding between the ionic liquid modifying compound and residual alkali / hydroxyl groups on the electrolyte surface, but also forms a polyionic liquid / polyether composite coating layer through in-situ copolymerization, possessing both high ionic conductivity and flexible segment characteristics, significantly reducing interfacial impedance and inhibiting lithium dendrite growth.

This invention discloses a method for preparing an oil-water separation membrane with switchable interface wettability and light-driven self-cleaning function, comprising the following steps: (1) preparing a spinning solution; (2) preparing a braided tube reinforced hollow nanofiber membrane; (3) preparing a braided tube reinforced hollow nanofiber membrane with zinc oxide nanowires; and (4) preparing an oil-water separation membrane with switchable interface wettability and light-driven self-cleaning function. The preparation method of this invention is simple and effective, the membrane material is not easily contaminated and is easy to regenerate, and can be scaled up industrially. The prepared ZIF-8@zinc oxide heterojunction modified braided tube reinforced hollow nanofiber membrane has switchable interface wettability, exhibiting excellent separation and filtration capabilities for oil-water emulsions. It can complete self-cleaning and regeneration under near-infrared or solar irradiation, thereby achieving continuous oil-water emulsion separation.

The invention discloses a low-temperature, high-performance polyionic liquid-based solid electrolyte and a preparation method and application thereof. The low-temperature, high-performance polyionic liquid-based solid electrolyte is a quasi-solid polymer similar to glycerol, has wettability and non-fluidity, uses imidazolium cations as polymer skeletons, ethyl-terminated polyethylene glycol chains as substituents, and counterions as Cl ‑ Br ‑ AA ‑ 、FSI ‑ PF6 ‑ 、BF4 ‑ TFSI ‑ Any one of the above. The low-temperature, high-performance polyionic liquid-based solid electrolyte has semi-solid non-fluidity, excellent wettability and interface compatibility, and a glass transition temperature (Tg) as low as ‑60°C. The higher ionic conductivity, interface compatibility and low-temperature resistance are conducive to improving the low-temperature electrochemical performance of solid-state batteries, and improving the rate performance and output power of solid-state batteries; the good mechanical strength, flexibility and non-volatility of the polymer structure can effectively prevent safety hazards such as internal short circuits and explosions in the battery.

The invention belongs to the technical field of electric power engineering, and particularly relates to a composite layer material for a cable intermediate joint and a preparation method of the composite layer material. The composite layer material for the cable intermediate joint is composed of an inner semi-conductive layer, an insulating layer and an outer semi-conductive layer, the silicone rubber is prepared from the following raw materials: methyl vinyl silicone rubber, methyl phenyl vinyl silicone rubber, trifluoropropyl methyl vinyl silicone rubber, a vulcanizing agent, an assistant crosslinker, an accelerant, diphenyl silanediol, an anti-aging agent, trifluoropropyl cage type silsesquioxane, and a mixture of modified nano hydroxyapatite and nano hectorite. According to the composite layer material for the cable intermediate joint, the three layers adopt the consistent siloxane main chain structure and vulcanization system, interlayer chemical compatibility is ensured, synchronous co-crosslinking is achieved, and by adjusting the silicone rubber composition and proportion of all the layers, the composite layer material can be applied to the cable intermediate joint. And it is ensured that the prepared composite layer material for the cable intermediate joint has excellent mechanical and hydrophobic water-blocking performance.

The application belongs to the technical field of electric power engineering, and particularly relates to a composite layer material for cable intermediate joint and a preparation method thereof. The composite layer material for cable intermediate joint is composed of an inner semi-conductive layer, an insulating layer and an outer semi-conductive layer. The insulating layer is composed of the following raw materials: methyl vinyl silicone rubber, methyl phenyl vinyl silicone rubber, trifluoro propyl methyl vinyl silicone rubber, vulcanizing agent, auxiliary cross-linking agent, accelerator, diphenyl silicone diol, anti-aging agent, trifluoro propyl cage type silsesquioxane, and a mixture of modified nano-hydroxyapatite and nano-laponite. The composite layer material for cable intermediate joint has a consistent siloxane main chain structure and vulcanization system in three layers, which ensures the chemical compatibility between layers and realizes synchronous co-crosslinking. By adjusting the composition and ratio of silicone rubber in each layer, the prepared composite layer material for cable intermediate joint has excellent mechanical and hydrophobic water-blocking properties.

The application provides a Sn-In-Ga ternary doped copper powder, a preparation method thereof and a TOPCon photovoltaic copper paste. The Sn-In-Ga ternary doped copper powder comprises copper powder, tin, indium and gallium, the tin, the indium and the gallium are attached to the surface of the copper powder, and the atomic molar ratio of each element in the Sn-In-Ga ternary doped copper powder is Cu:Sn:In:Ga=(98.0-99.2):(0.2-0.8):(0.2-0.8):(0.2-0.8). The Sn-In-Ga ternary doped copper powder can have good conductivity, oxidation resistance and interface compatibility.

The invention discloses a flame-retardant heat-insulating electric heating carbon fiber composite fabric and a preparation method thereof, and belongs to the field of fiber fabrics, the composite fabric comprises a glass fiber substrate layer, a carbon fiber electric heating layer and a flame-retardant heat-insulating coating covering the surface of the carbon fiber electric heating layer; according to the carbon fiber electric heating layer, carbon fibers are fixed to the glass fiber base layer according to a preset path through a customized fiber laying technology, so that a conductive heating network is formed. The flame-retardant heat-insulating coating is a vinyl silicone rubber-based composite coating and comprises vinyl silicone rubber VMQ-14, vinyl silicone rubber VMD-10k, white carbon black, aluminum hydroxide, zinc borate flame-retardant filler, a platinum catalyst, a hydrogen-containing silicone oil cross-linking agent and an inhibitor.