38results about How to "Low freezing point" patented technology

The invention discloses a low-temperature zinc ion battery high-entropy eutectic electrolyte and a preparation method and application thereof, and relates to the field of batteries, the electrolyte comprises a hydrogen bond donor, a hydrogen bond acceptor and a solvent; the hydrogen bond donor is at least one of methyl sulfonamide, thioformamide, butyramide, asparagine, tert-butylamine, dimethyl propane diamine, oxalyl diamine, benzamide, sulfamide and ethyl sulfonamide; the hydrogen bond receptor is at least one of aspartic acid, glutamic acid, methionine, zinc chloride, zinc perchlorate, zinc fluoborate and zinc acetate; the preparation method comprises the following steps: mixing a hydrogen bond donor and a hydrogen bond acceptor, and heating to convert a solid into a liquid phase; and adding a solvent, and uniformly mixing to obtain the product. The invention also provides a zinc ion battery containing the electrolyte. The high-entropy eutectic electrolyte has the beneficial effects that-NH2 and halogen or carboxyl form hydrogen bonds to perform eutectic reaction, the freezing point of the eutectic solution is lower than that of a reactant, and the solvent is added to improve the confusion degree of the electrolyte, so that the high-entropy eutectic electrolyte is prepared.

The present invention discloses a wide temperature range hydrated eutectic electrolyte and its application in aqueous zinc ion batteries. The wide temperature range hydrated eutectic electrolyte comprises a zinc salt, an alcohol organic solvent and an inorganic additive. The zinc salt is zinc perchlorate hexahydrate; the organic solvent is ethylene glycol; and the inorganic additive is an indium trichloride solution. The hydrated eutectic electrolyte prepared by the present invention enables aqueous zinc ion batteries to exhibit excellent electrochemical properties in a wide temperature range, can effectively inhibit the generation of side reactions such as dendrites and corrosion in aqueous zinc ion batteries, and thus prolong the service life of aqueous zinc ions in a wide temperature range.

The invention relates to a paper substrate bio-based high-barrier Pickering emulsion coating and a preparation method and application thereof, and belongs to the technical field of paper coatings, the prepared coating has excellent waterproof and oil-proof performance and is suitable for surface coating of substrates such as paper, the emulsion is prepared by taking glycerol as a plasticizer and chitosan as an oil-proof agent, and the emulsion is prepared by taking the chitosan as an oil-proof agent. The cellulose nanocrystal is used as an emulsifier, and the alkyl ketene dimer AKD and palm wax are used as an oil phase. After the emulsion is coated on the surface of paper, a high-barrier coating with a core-shell structure is formed, and the core-shell structure is clear through electron microscope observation; the hydrophobic angle of the coating can reach 130 degrees to the maximum, and the coating shows remarkable hydrophobicity and oil resistance. The coating is composed of bio-based materials, has the advantages of environmental protection and sustainability, is suitable for application requirements of degradable and green packaging, is simple in preparation process and excellent in performance, and can provide efficient barrier performance for paper packaging materials.

The invention discloses an electrolyte of an aqueous zinc-iodine battery, and relates to the technical field of zinc-iodine batteries, the electrolyte is prepared from an I + stabilizer, a hydrogen bond ligand, a low-freezing-point hydrogen donor solvent and a zinc salt, and the molar ratio of the I + stabilizer to the hydrogen bond ligand to the low-freezing-point hydrogen donor solvent to the zinc salt is 1: 0.5: 5: 0.5-1.5. The invention also provides a preparation method of the electrolyte and a zinc-iodine battery prepared by using the electrolyte. The zinc-iodine battery constructed by the invention can realize highly reversible I- / I2 / I + conversion and rapid iodide conversion kinetics in a wide temperature range of-25 DEG C to 40 DEG C, and has high energy density and excellent long cycle stability. In addition, due to the unique solvation structure of the electrolyte, the activity of water molecules in the system is reduced, and then the hydrogen evolution reaction and other side reactions are inhibited. Therefore, the invention provides a feasible strategy for realizing wide temperature range, high capacity and high performance of the zinc-iodine battery.

The invention relates to the technical field of oil well paraffin removal and prevention, and discloses a paraffin removal and prevention agent for an oil well shaft and a preparation process. The paraffin remover and inhibitor for the oil well shaft comprises the following components in parts by weight: 10-25 parts of a compound surfactant, 15-30 parts of a mutual solvent, 5-10 parts of a stabilizer, 1-10 parts of a novel wax crystal improver, 0.2-0.5 part of a rapid penetrant, 0.5-1.5 parts of alkali and 25-70 parts of water, the novel wax crystal improver has a structure similar to that of paraffin, and wax crystals can be dissolved in the novel wax crystal improver, so that the wax crystals are not easy to gather and deposit on a pipe wall, and the dissolution rate of the wax crystals is further improved; sodium sulfonate in the structure has strong polarity and hydrophilicity, can adjust the crystallinity of paraffin inhibitor molecules, has a synergistic effect with asphalt, colloid and the like in crude oil, reduces the surface tension of water, has a good wetting effect, and improves the low-temperature fluidity of the crude oil.

The invention belongs to the technical field of sodium-ion batteries, and particularly relates to a wide-temperature-range sodium-ion battery electrolyte, a sodium-ion battery and a preparation method of the sodium-ion battery. The wide-temperature-range sodium-ion battery electrolyte comprises a sodium salt, an organic solvent, a first additive and a second additive, the first additive is a benzocrown ether compound as shown in a formula (1) and / or a formula (2); the second additive is a film-forming agent. The key of the invention lies in that the benzocrown ether compound with a specific structure is introduced into the sodium-ion battery electrolyte as an additive, so that anions are promoted to participate in a solvation structure, the migration rate of sodium ions is enhanced, side reaction is inhibited, formation of an SEI film is promoted, the working temperature window (-30-45 DEG C) of the electrolyte is expanded, and the service life of the electrolyte is prolonged. And the sodium ion battery (SIBs) has good electrochemical stability and good cycle performance in a working temperature window, so that the electrochemical performance of the SIBs under all-weather conditions is improved. # imgabs0 #

The invention discloses a preparation method of a lithium ion battery electrolyte, and relates to the technical field of lithium ion battery electrolytes.The preparation method comprises the following steps that S1, single organic solvents, namely diethyl fluoromalonate, fluoroethylene carbonate and dimethyl carbonate are taken and mixed in proportion, and a mixed organic solvent is prepared; s2, preparing a composite lithium salt; and S3, the mixed organic solvent, the composite lithium salt and an additive are taken in proportion and mixed, the lithium ion battery electrolyte is prepared, and the additive is a sulfonate compound and a fluorine-containing sulfonamide compound. According to the invention, by adding the sulfonate compound and the fluorine-containing sulfonamide compound additive, a stable, uniform and thin interfacial film can be formed, the stability of CEI and SEI films can be improved, and the positive and negative electrode materials of the battery can be protected; and the freezing point of the organic solvent is reduced while the ionic conductivity under the high-temperature condition is improved, so that the low-temperature effect of the electrolyte is improved, and the lithium ion battery electrolyte has a wider temperature range.

The invention discloses a triazine desulfurizer and a preparation method thereof, and belongs to the technical field of gas purification. The triazine desulfurizer is mainly prepared from the following raw materials in percentage by weight: 20 to 50 weight percent of triazine derivative, 10 to 15 weight percent of sterically hindered amine, 3 to 7 weight percent of stabilizer, 1 to 3 weight percent of synergist, 0.5 to 1.5 weight percent of penetrant, 0.5 to 1.5 weight percent of inhibitor, 1 to 2 weight percent of additive and the balance of water, the preparation method of the triazine derivative comprises the following steps: adding 2-(diphenylphosphino) ethylamine into a toluene solvent, adding a paraformaldehyde aqueous solution in batches under a stirring condition, and reacting for 2-8 hours to obtain the triazine derivative. According to the triazine desulfurizer and the preparation method thereof provided by the invention, the triazine derivative and the sterically hindered amine are taken as a host, and the stabilizer, the synergist, the penetrant, the inhibitor and the assistant are compounded, so that the scaling trend of the triazine desulfurizer in an oil and gas well can be slowed down, the dissolution rate of hydrogen sulfide and the mass transfer rate in a solution are increased, and the desulfurization reaction is promoted; the desulfurization effect and the desulfurization rate are improved, and meanwhile, a very good scale inhibition effect is also achieved.

The invention discloses a non-selective sodium-ion battery electrolyte suitable for low temperature and a preparation method thereof, and relates to the field of batteries, and the sodium-ion battery electrolyte is composed of ethylene carbonate, propylene carbonate, methyl ethyl carbonate, vinylene carbonate and sodium hexafluorophosphate. The sodium ion battery low-temperature electrolyte with uniform components is obtained by regulating and controlling the proportion of the basic components and mixing the basic components with the additive with proper content, the freezing point of the electrolyte is reduced, the capacity retention ratio of the battery at low temperature is improved, and a new thought is expected to be provided for widening the low-temperature application scene of the sodium ion battery.

The invention relates to the technical field of electrolyte preparation, and discloses a lithium ion battery electrolyte capable of ensuring low-temperature discharge characteristic, which comprises the following components in percentage by mass: 25% of propylene carbonate (PC), 35% of dimethyl carbonate (DMC), 20% of gamma-butyrolactone (GBL), 20% of ethyl acetate, 1.0 mol / L of lithium salt bis (trifluoromethanesulfonimide) (LiTFSI), 3% of additive 1, 3-propane sultone (PS) (mass fraction: 0.1% of sodium hydroxide (mass fraction: 0.1% of sodium hydroxide), and the balance of water. According to the present invention, the low temperature performance of the solution is improved, the unique solvent formula and the unique solvent ratio enable the electrolyte to have good fluidity in the low temperature environment, and the freezing point of the electrolyte is effectively reduced so as to ensure that the lithium ions can smoothly migrate between the electrodes at the low temperature, such that the lithium ion battery performance is improved, and the lithium ion battery performance is improved. The discharge performance of the battery under a low-temperature condition is obviously improved, and the application scene of the lithium ion battery is expanded.

The invention discloses a preparation method of low-freezing-point dipropylene glycol, which comprises the following steps: carrying out condensation reaction on propylene oxide and propylene glycol by using a solid acid catalyst, and carrying out post-treatment to obtain the low-freezing-point dipropylene glycol. The sulfonic acid is loaded on the high-porosity inorganic nanoparticles, and the surface of the inorganic nanoparticles is modified with the crown ether in the form of a long cantilever, so that the preparation process of the dipropylene glycol is simplified, the dipropylene glycol with a low freezing point is obtained, the purity and the yield of the dipropylene glycol are improved, and the method is suitable for industrial production. And the solid acid catalyst still has good catalytic activity after being recycled for many times.

The invention relates to an insulating flame-retardant automatic fire extinguishing paste and a preparation method thereof. The insulating flame-retardant fire extinguishing patch comprises a bottom film, an adhesive layer and an insulating flame-retardant layer, the insulating flame-retardant layer is prepared from the following components in parts by weight: 20 to 60 parts of perfluoro-2-methyl-3-pentanone microcapsules, 20 to 30 parts of polydimethylsiloxane, 0.1 to 5 parts of magnesium hydroxide, 0.1 to 5 parts of triphenyl phosphate, 0.5 to 5 parts of tributyl phosphate, 0.1 to 5 parts of tris (2-ethylhexyl) phosphate, 0.2 to 5 parts of tris (2, 3-dichloropropyl) phosphate, 0.2 to 5 parts of tetrabromobisphenol A epoxy resin, 0.5 to 3 parts of antimony trioxide and 0.1 to 5 parts of borate. 0.1 to 5 parts of dichlorobromomethane and 0.1 to 5 parts of trichlorobromomethane. The insulating flame-retardant fire extinguishing paste is easy to install, does not need maintenance, actively extinguishes fire when a fire occurs in the initial stage, can achieve the effect of multiple times of fire extinguishing, can effectively prevent reburning and fire expansion, and is safe, green and environmentally friendly.

The invention provides a gel-state electrolyte and a preparation method thereof, and a zinc-bromine microbattery and a preparation method thereof, and belongs to the technical field of aqueous static zinc-bromine batteries. The xerogel is soaked in an electrolyte to obtain a gel-state electrolyte, ions in the electrolyte comprise bromide ions and zinc ions with electrochemical activity, and the concentration of the zinc ions is 5-12.5 mol / L. Reassembling the zinc-bromine microbattery through the gel-state electrolyte; a complexing agent and an anti-freezing agent do not need to be additionally added into the gel-state electrolyte, the preparation method is simple, the zinc-bromine microbattery can be used as energy supply equipment of flexible or microelectronic devices, the use scene and the application prospect of the zinc-bromine battery are remarkably widened, and stable energy supply can also be achieved under the variable-temperature condition. The zinc-bromine microbattery can be cycled for more than 5000 times at normal temperature, the specific capacity is 184 mu Ah.cm <-2 >, the zinc-bromine microbattery can also be cycled for more than 500 times at the temperature of-60 DEG C, and the capacity retention ratio is 98%.

The utility model relates to a high-pressure water pump anti-freezing protection system and a high-pressure cleaning vehicle, the high-pressure water pump anti-freezing protection system comprises a water tank, a water pump, a three-way valve, a water outlet pipeline and an anti-freezing liquid tank, the water tank is communicated with a first inlet of the three-way valve, an outlet of the three-way valve is communicated with an inlet of the water pump, and an outlet of the water pump is communicated with the water outlet pipeline; the anti-freezing liquid tank communicates with a second inlet of the three-way valve. The high-pressure cleaning vehicle comprises the high-pressure water pump anti-freezing protection system. Compared with the prior art, the anti-freezing protection system for the high-pressure water pump is provided with the anti-freezing liquid tank, when the anti-freezing protection system is not used in winter, the pipeline and the high-pressure water pump are filled with anti-freezing liquid, the anti-freezing liquid has a lower freezing point and cannot be frozen in winter, and the pipeline and the high-pressure water pump are prevented from being damaged.

This invention discloses a low-temperature resistant, high-power aqueous organic-bromine battery, belonging to the field of electrochemical energy storage technology. The invention uses a low-freezing-point bromine-based salt solution with added bromine solid complexing agent as the electrolyte, and a pseudocapacitive organic material as the negative electrode, which possesses ionic universality and can bind metal ions in the solution during the reaction. The positive electrode uses a carbon material as a substrate, where a bromine redox reaction occurs. Simultaneously, the complexing agent can complex bromine in solid form onto the carbon surface, ensuring good stability at both room temperature and low temperatures. The aqueous organic-bromine battery of this invention exhibits high energy density and ultra-high power density at room temperature, maintains high energy density even at low temperatures, and is inexpensive, showing promising application prospects.

The invention relates to the technical field of laundry products, in particular to a low-temperature high-concentration washing liquid and a preparation method thereof. The cleaning agent is prepared from the following components in percentage by weight: 38% of isomerized 1307, 28% of secondary alcohol aeo-9, 10% of propylene glycol, 0.3% of compound enzyme, 2% of glycerol, 21.2% of deionized water and 0.5% of essence. According to the low-temperature high-concentration washing liquid and the preparation method thereof, the isomerized 1307 and the secondary alcohol AEO-9 are compounded according to a specific proportion, and the synergistic anti-freezing effect of the propylene glycol and the glycerol is combined, so that the freezing point of a system is remarkably reduced, the pH value can be adjusted according to the actual situation, and the low-temperature high-concentration washing liquid is prepared. The prepared washing liquid can still keep good fluidity after being stored for a long time at 0 DEG C or even lower temperature, is free of crystallization and solidification, and solves the problem of freezing of highly concentrated products in winter.

The invention relates to the field of new energy, in particular to a negative pole piece, a preparation method of the negative pole piece and a battery. The negative pole piece comprises a current collector and a negative active material layer arranged on the surface of the current collector; the negative electrode active material layer comprises a porous material and an alloy material filled in pores of the porous material; the alloy material comprises a Na-K-M ternary alloy, and a metal element M contained in the Na-K-M ternary alloy is selected from one of the IIA family and the IIIA family. When the negative pole piece is applied to the lithium ion battery, the electrochemical performance is remarkably improved.

The invention relates to the technical field of organic silicon cooling liquid, and discloses poly (trialkyl silicon) substituted siloxane, a preparation method thereof and application of the poly (trialkyl silicon) substituted siloxane in immersion cooling liquid, the preparation method comprises the following steps: trialkyl silicon acetate and alkoxy silane are subjected to transesterification under the action of a catalyst, and the poly (trialkyl silicon) substituted siloxane is obtained. The poly (trialkyl silicon) substituted siloxane is obtained. The prepared poly (trialkylsilane) substituted siloxane is low in viscosity, high in boiling point, high in flash point, low in freezing point and good in stability, does not need to be compounded with a fluorinated liquid, can be independently used as an immersion cooling liquid and is applied to immersed heat dissipation of a chipset, and the preparation method is simple, efficient and suitable for large-scale production.

The invention discloses a crude oil pour point depressant which comprises a main agent, an auxiliary agent and a high-flash-point organic solvent, and the mass ratio of the main agent to the auxiliary agent to the high-flash-point organic solvent is (25-35): (1-3): (62-74); wherein the main agent is formed by polymerizing ethylene-vinyl acetate, polyacrylic acid octadecanamide and alkyl maleimide according to a molar ratio of (2.8 to 3.2): (1.8 to 2.2): (1.8 to 2.2); the auxiliary agent is one or any combination of oleic acid diethanolamide, N-oleoyl sarcosine and hydroxy fatty acid; the high-flash-point organic solvent is one or any combination of trimethylbenzene, tetramethylbenzene, propylene glycol butyl ether and diethylene glycol monobutyl ether. The invention also discloses a preparation method and application thereof. The crude oil pour point depressant provided by the invention can effectively reduce the condensation point of high-condensation-point crude oil of which the condensation point is greater than 40 DEG C and improve the fluidity of the high-condensation-point crude oil of which the condensation point is greater than 40 DEG C, so that normal transportation of the crude oil is ensured, and powerful support is provided for reducing the operation cost of the high-condensation-point crude oil and ensuring normal transportation of the crude oil.

The application belongs to the technical field of building coatings and relates to a styrene-acrylic emulsion, which comprises the following components in parts by mass: styrene 1-40 parts, butyl acrylate 1-30 parts, acid monomer 0.1-1 part, acrylamide 0.01-1 part, film-forming solvent 0.01-1 part, crosslinking agent 0.01-1 part, anionic emulsifier 0.1-2 parts, non-ionic emulsifier 0.1-2 parts, oxidizing agent 0.01-0.5 part, reducing agent 0.01-0.5 part, initiator 0.01-1 part, pH buffer 0.01-0.5 part, neutralizing agent 0.1-1 part, defoaming agent 0.02-1 part, preservative 0.02-1 part and water 44-56 parts. The application further provides a preparation method of the styrene-acrylic emulsion and application of the styrene-acrylic emulsion in interior wall coating. The interior wall coating prepared by using the styrene-acrylic emulsion does not need solvent, and the coating has excellent washability, low-temperature stability and wash resistance.

A wide temperature range deep eutectic electrolyte and its preparation method and application belong to the field of chemical power source technology. The scheme is as follows: the wide temperature range deep eutectic electrolyte is composed of ethylene carbonate, succinonitrile and alkali metal ion salt, wherein the mass ratio of succinonitrile to ethylene carbonate is 4:6 to 6:4, and the concentration of alkali metal ion salt is 2.5 to 4 mol / L. The preparation method is as follows: Ethylene carbonate and succinonitrile are melted separately, mixed evenly, and cooled to obtain a deep eutectic solvent; alkali metal ion salt is added to the deep eutectic solvent and stirred until completely dissolved to obtain a wide temperature range deep eutectic electrolyte. The wide temperature range deep eutectic electrolyte is used in alkali metal ion batteries. The present invention prepares a deep eutectic solvent with low viscosity, low freezing point, high boiling point and high electrochemical stability, and then composites a high-concentration alkali metal ion salt to obtain a deep eutectic electrolyte with a wide liquid range to meet the working requirements of wide temperature range alkali metal ion batteries.

This invention discloses the use of a class of polysubstituted cyclic ether compounds as solvents for lithium-ion battery electrolytes. The polysubstituted cyclic ether compounds are alkyl-substituted cyclic ether solvents. These polysubstituted cyclic ether solvents have lower dielectric constants and lower ion desolvation energies, and exhibit good stability with lithium metal / graphite anodes. More importantly, these polysubstituted cyclic ether compounds have no special restrictions on the type of lithium salt. Using these polysubstituted cyclic ether compounds can significantly improve the low-temperature performance of batteries, thus broadening their applicability.

The invention belongs to the technical field of lithium battery electrolyte, and particularly relates to ultralow-temperature electrolyte suitable for a ternary high-specific-energy soft package lithium ion battery system. The invention provides an ultralow-temperature electrolyte suitable for a ternary high-specific-energy soft package lithium ion battery system. The ultralow-temperature electrolyte comprises a mixed organic solvent, a lithium salt and a functional additive, the mixed organic solvent contains linear carbonic ester with a low freezing point and linear carboxylic ester with a low freezing point; the mixed organic solvent also contains at least one of fluorinated carbonate and fluorinated carboxylic ester. Linear carbonic ester and linear carboxylic ester with low freezing points are adopted as solvents, carbonic ester solvents with high freezing points are replaced or partially replaced, the viscosity of the electrolyte is reduced, the Li < + > desolvation process is adjusted by adding fluorinated carbonic ester and fluorinated carboxylic ester, the oxidation resistance of the electrolyte is improved, and the SEI stability is considered. In addition, the low-temperature performance is improved in the aspects of improving the lithium ion conductivity, constructing a stable SEI film with high ion conductivity, accelerating interface reaction kinetics and the like.

The invention relates to the technical field of zinc-silver reserve batteries, in particular to a low-temperature electrolyte preparation device and method for a zinc-silver reserve battery, and the method comprises the following steps: S1, preparing a basic electrolyte, S2, preparing a composite functional additive, S3, mixing a composite electrolyte, and S4, carrying out vacuum degassing treatment. The device comprises a mixing tank, a liquid density sensor is arranged in the mixing tank, and an additive feeding assembly is arranged at the top of the mixing tank; a rotation driving part is fixedly connected to the top of the mixing tank and fixedly connected with a rotating shaft, and a first stirring paddle assembly is arranged at the bottom of the rotating shaft; the rotating shaft is sleeved with a sleeve, a second stirring paddle assembly is arranged at the bottom of the sleeve, and a transmission assembly is arranged between the second stirring paddle assembly and the rotating shaft. The electrolyte is prepared by introducing the composite functional additive, the working performance of the zinc-silver battery under the wide temperature range condition is improved, the preparation device in a specific stirring mode is combined for preparation, the mixing efficiency of the additive and the basic electrolyte is guaranteed, and the finished product quality of the low-temperature electrolyte is improved.

This invention discloses an IoT chip module encapsulation conveying device, including a CNC guide rail and a carrier block. A laterally movable mounting plate is installed on the CNC guide rail, and a rack is fixedly connected to one side of the CNC guide rail. An air supply mechanism is installed on the mounting plate, and the rack is drivenly connected to the air supply mechanism. A first sliding groove is formed on the mounting plate, and a locking block is provided on the carrier block. This IoT chip module encapsulation conveying device, through the setting of a buffer mechanism, allows the carrier block to slide along the first sliding groove due to inertia the instant the mounting plate stops. The buffer mechanism can buffer the carrier block, thereby reducing the possibility of the encapsulant on the chip flowing out or deforming due to inertia. Through the coordinated arrangement of the rack, air supply mechanism, and buffer damping adjustment mechanism, the buffer mechanism can automatically adjust the damping magnitude according to the speed of the carrier block's movement, further improving the practicality of the device.

The present invention relates to the field of new energy, and specifically to a negative electrode plate, a preparation method thereof, and a battery. The negative electrode plate of the present invention comprises a current collector and a negative electrode active material layer disposed on the surface of the current collector; the negative electrode active material layer comprises a porous material and an alloy material filled in the pores of the porous material; wherein the alloy material comprises a Na-K-M ternary alloy, and the metal element M contained in the Na-K-M ternary alloy is selected from one of the IIA group and the IIIA group. The negative electrode plate of the present invention is applied to lithium-ion batteries with significantly improved electrochemical performance.

The application belongs to the technical field of aqueous zinc ion batteries, and discloses a low-temperature-resistant aqueous zinc ion battery and a preparation method thereof. The low-temperature-resistant aqueous zinc ion battery is constructed by using a single or composite positive electrode material with excellent zinc ion storage performance and ion diffusion dynamics, and using a composite aqueous solution system with various cations and anions combined and regulated as an electrolyte, and cooperating with zinc metal as a negative electrode. The low-temperature-resistant aqueous zinc ion battery is a low-temperature button type, soft package or cylindrical zinc ion battery. The application designs and regulates the interaction and hydrogen bond network distribution of various salt solutes and pure water solvents of the low-temperature-resistant electrolyte, matches the zinc storage positive electrode material with good ion dynamics in a low-temperature environment, and constructs the zinc ion battery with stable working capacity and high specific capacity at an extremely low temperature (‑80℃), which is applied as an energy supply device in various extreme environments.

The application discloses a method for preparing high-density aviation fuel by one-pot degradation of waste PC plastic, which comprises the following steps: taking waste PC plastic as raw material, and adding a double-function synergistic catalyst in a high-pressure reaction kettle; under the joint action of a metal-supported catalyst and a solid superacid additive, the reaction steps of ester bond breaking, intermediate hydrogenation, aromatic ring saturation and hydrogenation deoxidization are continuously completed by one-pot method in the high-pressure reaction kettle, and high-density aviation fuel is prepared with high selectivity. The method avoids the complicated intermediate separation step in the traditional multi-step conversion process, the aviation fuel obtained is mainly propane-2,2-diyl dicyclohexane (C15), the selectivity of which is greater than or equal to 95%, the yield is as high as 95%, the density of the aviation fuel obtained is greater than 0.90 g / mL, the combustion heat is greater than 40 MJ / kg, the freezing point is lower than-35 DEG C, and the aviation fuel has excellent combustion performance and low-temperature performance. The application provides a green and efficient solution for the high-value upgrading and recycling of waste PC plastic, and meets the development strategy of circular economy.

The invention relates to the technical field of water-based zinc ion batteries and electrolytes thereof, and discloses a wide-temperature electrolyte as well as a preparation method and application thereof, and the method comprises the following steps: mixing an alcohol substance serving as a hydrogen bond donor and an amide substance serving as a hydrogen bond acceptor according to a molar ratio of 1: 0.2-1: 20, and heating to enable the alcohol substance and the amide substance to be completely complexed to prepare a deep eutectic solution; wherein the alcohol substance is selected from at least one of ethanol, ethylene glycol and glycerol, and the amide substance is selected from at least one of caprolactam, formamide and trifluoroacetamide; and mixing the deep eutectic solution serving as an electrolyte additive with deionized water, and adding zinc acetate to prepare the wide-temperature electrolyte. The deep eutectic solution is introduced into the electrolyte to serve as an additive of the electrolyte, the preparation operation of the electrolyte is simple, conditions are controllable, and large-scale production is easy. Meanwhile, the deep eutectic solution is low in price, green and environment-friendly, and is an additive material with application potential.

The invention relates to the field of aviation fuel synthesis, and discloses a method for preparing high-density aviation fuel through pyrolysis oil hydrogenation, which comprises the following steps: preparing a supported molecular sieve catalyst; the cracking oil is subjected to solvent extraction, distillation, aromatic hydrocarbon extraction and mild hydrogenation pretreatment to separate a refined cracking oil component; and performing catalytic hydrogenation conversion reaction on the refined pyrolysis oil component to prepare the high-density aviation fuel. The high-dispersion supported molecular sieve catalyst is prepared through molecular sieve ion exchange, alkali modification and optimized hydrolysis load, and is used for hydrogenation reaction of pyrolysis oil components under the solvent-free condition, the aromatic hydrocarbon conversion rate is high, and the produced naphthenic mixture has the characteristics of high density and low freezing point; the fuel can be directly used as advanced aviation fuel or a traditional aviation fuel additive to improve the volume calorific value of the fuel; the preparation method disclosed by the invention is mild in reaction condition, simple in implementation route, high in yield of the high-density polycyclic hydrocarbon compound and wide in industrial prospect.