10results about How to "Reduce side effects" patented technology

The application relates to a low-eutectic solvent-based gel electrolyte, a preparation method and a zinc-air battery, and belongs to the technical field of metal-air batteries. Choline chloride and 2-methyl-1,3-propanediol are prepared into a deep eutectic solvent, then zinc acetate dihydrate solution, acrylic acid monomer, a crosslinking agent and a photoinitiator are sequentially added, the mixture is uniformly mixed, photopolymerization is carried out, and a low-eutectic solvent-based gel is obtained. The electrolyte is obtained by soaking the gel in a mixed solution of potassium hydroxide and zinc salt. The zinc anode protection capability and the low-temperature adaptability of the gel electrolyte can be improved. The gel electrolyte is assembled into a zinc-air battery together with a zinc electrode and an air electrode, and the cycle life and the operation stability of the battery in a low-temperature environment can be effectively improved.

The application discloses a kind of anti-fake color-changing ink and printing process for flat paper to print two-dimensional code, belong to the technical field of ink for anti-fake.The anti-fake color-changing ink according to weight fraction, including: acrylic emulsion 35-40 parts, polyurethane emulsion 15-20 parts, bisphenol A type epoxy resin 5-8 parts, thermochromic material 6-10 parts, hydrogel coated thermochromic material 2-5 parts, temperature-sensitive color-changing capsule 5-8 parts, scratch-resistant additive 2-3 parts, first coupling agent 1-2 parts, second coupling agent 1-2 parts, leveling agent 0.5-0.8 parts, defoaming agent 0.3-0.5 parts, stabilizer 0.5-0.8 parts, first crosslinking agent 2-3 parts, methylsilane 1-2 parts, wax emulsion 1-2 parts, wetting agent 2-3 parts, preservative 0.1-0.5 parts and deionized water 15-20 parts;The hydrogel coated thermochromic material is acrylamide-based hydrogel coated thermochromic material.The anti-fake color-changing ink can simultaneously realize the promotion of anti-precipitation, high adhesion, scratch resistance, high-temperature aging resistance by the synergy of hydrogel coated thermochromic material and scratch-resistant additive.

The present application relates to the field of polymer manufacturing, and particularly relates to a long-chain branched modification method of rare earth isoprene rubber and / or butadiene rubber, comprising the following steps: S1. performing solution polymerization of isoprene and / or butadiene and isoprene in a non-polar solvent in the presence of a rare earth catalyst to obtain a glue solution containing active polymer molecular chains; S2. when the conversion rate of the polymerization reaction reaches 95% or more, adding a compound branched modifier to the glue solution to perform a branched reaction; wherein the compound branched modifier comprises at least one of a chloride and an alkyl halide and at least one selected from ether compounds and tertiary amine compounds. The branched modifier used in the present application has a strong branching effect, and has good solubility so as to achieve uniform mixing at a molecular level in the glue solution, significantly alleviates the gel side reaction, reduces the gel content, narrows the molecular weight distribution, significantly improves the raw rubber performance, and improves the product uniformity.

The present invention pertains to a negative electrode for a lithium secondary battery, a method for manufacturing same, and a lithium secondary battery including same. More specifically, the negative electrode for a lithium secondary battery according to the present invention has a protective layer containing a three-dimensional structure composed of metal and lithium nitride, and thus uniform ionic conductivity and electrical conductivity can be induced on the surface of the negative electrode.

The invention specifically discloses an electrolyte and a lithium ion battery. The electrolyte comprises an electrolyte for first injection and an electrolyte for second injection, the first injection electrolyte comprises a first solvent, a first additive and a first lithium salt; the first solvent comprises dimethyl carbonate, the first additive comprises vinylene carbonate and a composite additive, and the composite additive comprises at least one of fluoroethylene carbonate, ethylene sulfate and methylene methanedisulphonate; the mass ratio of the dimethyl carbonate is 45%-50%; the secondary injection electrolyte comprises a second solvent, a second additive and a second lithium salt; the second solvent comprises dimethyl carbonate, and the second additive comprises vinylene carbonate; the mass ratio of the dimethyl carbonate is 45%-50%; the mass ratio of the vinylene carbonate is 15%. The lithium battery has the advantages of high energy density and long cycle performance.

The application discloses a composite diaphragm for lithium ion batteries, a preparation method of the composite diaphragm and a lithium ion battery. The composite diaphragm comprises a porous base diaphragm, a first microcapsule coating layer coated on a first surface of the porous base diaphragm and a second microcapsule coating layer coated on a second surface of the porous base diaphragm. The first microcapsule is composed of a lithium source compound core material and a polymer wall material coated outside the lithium source compound core material, and the second microcapsule is composed of a lithium-poor active material core material and a polymer wall material coated outside the lithium-poor active material core material. The softening temperature of the polymer wall material is in the range of 90 DEG C to 230 DEG C. When the temperature of the battery reaches a set trigger temperature, the lithium source compound on the first surface side releases lithium to be inserted into a delithiated positive electrode to reduce the positive electrode potential, and the lithium-poor active material on the second surface side releases lithium to be inserted into a lithium-inserted negative electrode to increase the negative electrode potential, so that the battery state of charge is reduced, and chemical intervention is completed before thermal runaway.

This invention relates to the field of organic synthesis technology, and discloses a copper-based catalyst, its preparation method, and a method for catalyzing the preparation of cyclododecanol from cyclododecanol into cyclododecanone. The preparation method of the copper-based catalyst includes the following steps: preparing a catalyst with a specific surface area of ​​200-250 m² / g. 2 / g Al2O3-SiO2 composite support; copper source and rare earth oxide additives were loaded onto the Al2O3-SiO2 composite support, dried and calcined to obtain catalyst precursor; the catalyst precursor was reduced to prepare Cu + A copper-based catalyst with a molar ratio of 1.8 to 2.5:1 to elemental copper. This invention can control the Cu content in the copper-based catalyst. + The molar ratio with elemental copper allows the catalyst's activity state to be adjusted according to different production needs, thereby enabling flexible control of the reaction rate, improving process adaptability and operational stability; at the same time, it helps to suppress side reactions and improve the selectivity and purity of cyclododecanone.

The invention discloses a process for preparing a high-purity sodium ion aqueous solution through closed cycle, and belongs to the technical field of inorganic ion liquid preparation. The preparation method comprises the following steps: taking pure water dissolved sodium fluoride as an initial system, and adding metal calcium to react to generate superfine calcium fluoride precipitate and primary sodium ion water; subsequently, the sodium ion water is used as circulating mother liquor to completely replace pure water, and sodium fluoride and metal calcium are continuously supplemented to carry out closed cycle reaction. Fluorine ions and calcium ions are directionally combined and precipitated, sodium ions are continuously enriched in a liquid phase, the concentration is continuously increased along with the number of cycles, the system is always kept in a flowable liquid state, and side reaction of calcium and water can be inhibited due to reduction of water activity. The method breaks through the upper limit of the solubility of the traditional sodium salt, the ultrahigh-concentration sodium ion mother liquor can be obtained, the finished product can leave a factory after being diluted, the mother liquor can be recycled permanently, and the method has the advantages of high reaction efficiency, high raw material utilization rate, no waste liquid discharge, suitability for continuous industrial production and the like; the obtained product can be widely applied to the fields of skin care, moisture preservation, mucous membrane care, whole body electrolyte supplement and the like.

The invention relates to the technical field of efficient catalysts and prevention and control of atmospheric pollutants, in particular to a wide-temperature denitration catalyst and a preparation method thereof. The preparation method comprises the following steps: adding deionized water and a dispersing agent into a reaction kettle, stirring after heating, then simultaneously injecting a salt solution and a precipitator solution into the reaction kettle, continuously stirring and mixing the solutions after charging, and filtering, washing and drying after aging to obtain precursor powder; calcining the precursor powder in an N2 atmosphere to obtain calcined powder; and putting the calcined powder into a mixed aqueous solution of ammonium metavanadate and ammonium heptamolybdate, carrying out water bath stirring reaction, drying, and calcining to obtain the wide-temperature denitration catalyst. The wide-temperature characteristics of low-temperature efficient denitration and high-temperature stable denitration of the catalyst are achieved through active component dispersion, layered structure regulation and control and high-temperature and low-temperature active site collaborative construction, and the catalyst effectively adapts to the working condition characteristic that the temperature of industrial flue gas fluctuates greatly.

This invention discloses a special electrolyte additive, an electrolyte, and a lithium-ion battery. The trimethylsiloxysilane compound and fluorosulfonic anhydride compound of this invention have low LUMO and high HOMO values, respectively, and can preferentially undergo redox reactions in the solvent. This allows them to form a more stable CEI film and SEI film on the positive and negative electrode surfaces, respectively, which can effectively slow down the dissolution of metal ions from the positive electrode and inhibit their reduction deposition on the negative electrode. At the same time, the fluorosulfonic anhydride compound, together with the trimethylsiloxysilane compound, participates in the formation of the SEI film, further improving the mechanical strength of the SEI film, thereby alleviating the side reactions between the electrode and the electrolyte and improving the cycle stability of the battery.