16 results about "Lithium perchlorate" patented technology

The application discloses an interface control liquid for prelithiation electrodes, a preparation method and application, and the interface control liquid comprises a solvent and a metal salt; the solvent comprises one or more of an ether solvent, an ester solvent, a ketone solvent, a hydrocarbon solvent, a nitrile solvent or deionized water; the metal salt comprises one or more of lithium hexafluorophosphate, lithium tetrafluoroborate, lithium hexafluoroarsenate, lithium bisoxalate borate, lithium bisfluorosulfonimide, lithium bistrifluoromethylsulfonimide, lithium perchlorate, lithium fluoride and lithium chloride; the concentration of the metal salt is 0.001 g / mL-10 g / mL; the prelithiation electrode is obtained by supplementing lithium to an electrode by a chemical prelithiation solution; the interface control liquid is used for modifying the prelithiation electrode, the metal salt of the interface control liquid reacts with the chemical prelithiation solution remaining on the surface of the prelithiation electrode, and a solid electrolyte layer containing inorganic lithium salt is generated on the surface of the prelithiation electrode; wherein, the content of the inorganic lithium salt is between 5% and 90%.

The application relates to the technical field of batteries, in particular to an electrolyte suitable for primary lithium-manganese batteries and a preparation method thereof. The electrolyte comprises propylene carbonate, ethylene carbonate, lithium bisfluorosulfonylimide, lithium perchlorate, lithium bisoxalate borate, terminal bisdifluorophosphorylated oligomeric trimethylene carbonate, ethylene glycol dimethyl ether, lithium difluorooxalate borate and 1,3-propane sultone. The electrolyte is prepared through a pre-coordination and segmented dilution process with specific timing. The electrolyte system can synergistically optimize the electrode interface film forming process, has high discharge capacity retention rate and low direct current resistance at low temperature (-20 DEG C), and has high capacity retention rate after high-temperature storage (60 DEG C), thereby significantly improving the comprehensive performance of the primary lithium-manganese battery in a wide temperature range.

The invention relates to the technical field of energy storage, in particular to a gel electrolyte, and an electrochemical device and electronic equipment comprising the same, and the gel electrolyte is obtained by gelation reaction of a precursor solution comprising 1, 3-dioxolane, boron trifluoride diethyl etherate, lithium perchlorate and fluoroethylene carbonate. The gel electrolyte provided by the invention can realize a 5.4 V electrochemical stable window, and has high ionic conductivity and excellent cycle performance.

The present application relates to the technical field of gel electrolyte for supercapacitor, in particular to a gel electrolyte based on lysozyme amyloid fibers and application thereof. The ion conductivity of the conventional plant protein-based gel electrolyte is poor, and the electrical performance needs to be further improved. In view of the above problems, the present application provides a gel electrolyte based on lysozyme amyloid fibers. The lysozyme in the formula self-assembles into amyloid fibers under acidic conditions, and the surface of the amyloid fibers is rich in polar groups such as hydroxyl, carboxyl and amino groups, which can effectively promote the dissociation of lithium salt. At the same time, the three-dimensional network structure formed by the self-assembly of the fibers. Glycerol as a small molecule plasticizer inserts between the polymer chains. Lithium perchlorate and other lithium salts can provide high concentration of free lithium ions due to the large anion volume and low dissociation energy. The above components synergize and jointly act, effectively improving the comprehensive electrical performance of the gel electrolyte.

The invention relates to the technical field of lithium battery positive electrode materials, in particular to a battery positive electrode multifunctional binder and a preparation method and application thereof. The multifunctional binder for the positive electrode of the battery comprises a lithium salt, 2-vinyl-1, 3-dioxolame and conductive carbon, the lithium salt is selected from one or more of lithium hexafluorophosphate, lithium perchlorate, lithium bis (trifluoromethylsulfonyl) imide, lithium bis (oxalato) borate, lithium difluoro (oxalato) borate and lithium bis (fluorosulfonyl) imide. The battery positive electrode multifunctional binder provided by the invention has good mechanical strength and bonding strength and excellent ion / electron conduction performance, a high-load positive electrode can be prepared based on the multifunctional binder, and a lithium battery assembled by the multifunctional binder can realize high energy density and stable circulation.

The invention belongs to the technical field of supercapacitor electrode materials, and relates to an all-solid-state supercapacitor based on a CuCo2O4-PDMT composite electrode and a preparation method thereof.The preparation method comprises the steps that copper nitrate and cobalt nitrate serve as metal sources, and a CuCo2O4 bottom layer is prepared through constant-potential electro-deposition-muffle furnace annealing; 2, 5-dimethylthiophene (DMT) is used as a monomer, a PDMT top layer is prepared through cyclic voltammetry electropolymerization, and a CuCo2O4-PDMT composite electrode is formed; polyethylene glycol (PEG) is used as a gel matrix, lithium perchlorate (LiClO4) is used as an ion source, nano TiO2 is used as a reinforcing agent, and the composite gel electrolyte is prepared through'microwave dissolution-ultraviolet curing '. The composite electrode and the gel electrolyte are assembled into the all-solid-state symmetrical supercapacitor, so that the defects of high electrode electron transmission impedance, low gel electrolyte ion conductivity and insufficient cycling stability of the existing all-solid-state supercapacitor are overcome, and the collaborative construction of the composite electrode conductive network and the gel electrolyte ion channel is realized; and the performance limitation of traditional single component optimization is broken through.

The invention relates to the field of LED display screen industry, in particular to a thermochromic coating composition, a thermochromic coating, application of the thermochromic coating and a display screen input power adjusting method. The thermochromic coating composition provided by the invention comprises the following components in percentage by weight: 0.5-5.0% of nano carbon black; 20 wt% to 87 wt% of polyethylene oxide; 0.5 wt% to 15 wt% of lithium perchlorate; and 10 wt% to 70 wt% of polydimethylsiloxane. The coating formed by the thermochromic coating provided by the invention solves the problem that the light transmittance of a static adhesive film is non-adjustable, so that the light transmittance of the coating is improved (more than 90% in actual measurement) along with the rise of the temperature of a display screen during light emission, the temperature of the display screen is reduced when the screen is turned off, shading is gradually recovered (the light transmittance is less than 40%), and the light transmittance of the coating is not adjustable. The input power of the display screen is reduced on the premise that the brightness is not reduced while the light transmittance is increased, and the effects of cooling the display surface and saving energy are achieved.

The invention discloses an electrochromic device based on a three-electrode structure and a preparation method of the electrochromic device, and belongs to the technical field of electrochromic devices.The device comprises a polyaniline positive electrode, a tungsten oxide negative electrode, a zinc auxiliary electrode and an electrolyte, and the polyaniline positive electrode, the tungsten oxide negative electrode, the zinc auxiliary electrode and the electrolyte form a parallel-like capacitor structure; the zinc auxiliary electrode and the polyaniline positive electrode form an acceleration gate structure, and the electrolyte contains 1 mol L of lithium perchlorate and can be doped with 0.1-0.5 mol L of zinc perchlorate, so that Li < + > and Zn < 2 + > synergistically participate in ion implantation and extraction reaction. After optimization, the device can be reversibly switched to yellow, green, blue and purple from transparent under the voltage of 0.2-1.6 V, and the optical transmittance modulation amplitude reaches 88.1%; the capacitance reaches 14.67 mFcm < 2 > at the scanning rate of 10 mVs, which is more than 12 times that of a traditional dual-electrode device. The system is excellent in stability and expandability, and a brand new design thought is provided for application of intelligent windows, optical filters, optical switches, photon chips and the like.

This invention relates to the field of polymer materials technology, and particularly to a method for synthesizing a polystyrene-based single-ion conductor copolymer with a controllable side chain structure. The process steps include: (1) Synthesis of PEG macromonomer: First, through DCC / DMAP-catalyzed esterification, mPEG with terminal hydroxyl groups is reacted with 4-vinylbenzoic acid to prepare a polymerizable PEG macromonomer mPEG-4-vinylbenzoate; (2) Synthesis of anionic monomer: STFSIK monomer with polymerizable vinyl groups and strongly delocalized negatively charged anions is prepared; (3) Copolymerization reaction: A comb-like copolymer with both PEG side chains and potassium imine salt side chains is formed; (4) Ion exchange: The potassium-containing copolymer is reacted with lithium perchlorate to obtain the final target product. The synthesis route of this invention is clear. Through four well-defined chemical reactions, a complex single-ion conductor is synthesized. It is highly controllable and reproducible, and its performance is adjustable.

A method for preparing a composite photoelectrode for glucose content detection includes the following steps: adding potassium iodide and bismuth nitrate pentahydrate to a nitric acid solution, adding p-benzoquinone to ethanol, and mixing to obtain electrolyte A; depositing a BiOI thin film on FTO conductive glass using an electrochemical method; dripping a dimethyl sulfoxide solution of vanadium acetylacetonate onto the surface of the BiOI thin film, calcining it, immersing it in NaOH solution, rinsing it, and drying it to obtain a BVO photoelectrode; adding lithium perchlorate and terthiophene to acetonitrile to obtain electrolyte B, and performing photoelectrodeposition on the BVO photoelectrode using an electrochemical method to obtain the composite photoelectrode. The preparation method of this invention is simple and safe to operate, uses readily available materials, and can be mass-produced; the prepared composite photoelectrode, combined with photoelectric detection technology, can detect glucose content, exhibits high stability, simple steps, rapid response, and high sensitivity, providing a new analytical method for glucose content determination.

The application belongs to the technical field of lithium battery electrolyte resource recovery, and discloses a method for recovering lithium chloride resources in lithium perchlorate mother liquor. The method for recovering lithium chloride resources in lithium perchlorate mother liquor comprises the following steps: mixing and diluting lithium perchlorate mother liquor with water to obtain diluted lithium perchlorate mother liquor; then adding sodium carbonate solution for mixing and lithium precipitation to obtain lithium precipitation mother liquor and lithium carbonate dry material; concentrating the lithium precipitation mother liquor, then adding hydrochloric acid for reaction, and then cooling and precipitating sodium to obtain sodium chloride and perchloric acid mother liquor; the perchloric acid mother liquor is subjected to normal pressure distillation and vacuum distillation in sequence to obtain fractionated perchloric acid solution, and the remaining solution after the vacuum distillation is returned to be mixed with the lithium precipitation mother liquor. The method utilizes the solubility of lithium carbonate and the boiling point of perchloric acid to realize recovery of lithium chloride resources in lithium perchlorate mother liquor, wherein the recovery rate of lithium is greater than 90%, the recovery rate of perchlorate is greater than 76%, it is environmentally friendly, the initial investment is small, and the recovery cost is low.

Electrochemical cell in which lithium ions move back and forth, comprising: Electrode comprising a chalcogen-containing electroactive material, wherein the chalcogen-containing electroactive material comprises elemental selenium or a selenium-containing active material; and Electrolyte system, including: one or more lithium salts selected from the group consisting of: lithium bis(fluorosulfonyl)imide (LiN(FSO2)2), bis(trifluoromethane)sulfonimide lithium salt (LiN(CF3SO2)2), lithium hexafluorophosphate (LiPF6), lithium hexafluoroarsenate (LiAsF6), lithium tetrafluoroborate (LiBF4), lithium perchlorate (LiClO4), lithium iodide (LiI), lithium bromide (LiBr), lithium thiocyanate (LiSCN), lithium difluoro(oxalato)borate (LiBF2(C2O4)), LiPF3(C2F5)3, LiPF4(CF3)2, lithium tetrafluoro(oxalato)phosphate (LiPF4(C2O4)), LiPF3(CF3)3, LiSO3CF3 and combinations thereof, and one or more solvents selected from the group consisting of: cyclic carbonates, linear carbonates, aliphatic carboxylic esters, γ-lactones, chain structure ethers, cyclic ethers and combinations thereof, wherein the electrolyte system is essentially free of lithium nitrate (LiNO3) and the electrochemical cell has a minimum charge potential of more than or equal to about 0.8 V to less than or equal to about 1.8 V.

The application discloses an electric energy sensitive composite particle, a preparation method and application, the composite particle is a double-layer structure, the outer layer is a conductive polymer or metal nanoparticles, and has a response decomposition to electric energy; the inner core is a slow-burning flame retardant material, and can quickly suppress combustion after power failure. The preparation method comprises the following steps of material solution preparation, electrostatic spraying and post-processing steps, and the composite particle with a particle size of 200-400 mu m is obtained through drying and screening. When the composite particle is applied to electrically controlled solid propellant, sodium nitrate, sodium nitrate and lithium perchlorate are used as oxidants, epoxy resin is used as a binder, and the composite particle is added, and the prepared propellant can be quickly ignited (response time < 500 ms) under power-on, and can be quickly extinguished (extinguishing time < 350 ms) under power-off, so that the problems of traditional propellant dependence on mechanical devices and response delay are solved. The application has the advantages of simple process, low raw material cost, stable particle performance, and good industrialization prospect.

The application discloses an electro-synthesis method of 5-selenotetrazole, which comprises the following steps: using platinum sheet as a cathode, a carbon rod as an anode, using tetrabutylammonium perchlorate or lithium perchlorate as an electrolyte under constant current catalysis, and one-pot cyclization of diaryl diselenide, isonitrile and azidotrimethylsilane to prepare 5-selenotetrazole derivatives; and after post-treatment of the obtained reaction mixture, 5-selenotetrazole pure product is separated through column chromatography. According to the application, 5-selenotetrazole can be obtained through one-step reaction, the operation steps are few, the use of oxidants and additives is avoided, the post-treatment process is simple, and the product is easy to separate.

The invention provides a preparation method of a PEDOT (poly (3, 4-ethylenedioxythiophene)) coated amorphous NiCoP / CC (NiCoP / CC) material, which is characterized by comprising the following steps: S1, preparing the NiCoP / CC material by adopting an electrochemical deposition method; and S2, placing the NiCoP / CC material in an aqueous solution containing EDOT, lauryl sodium sulfate and lithium perchlorate for electrochemical polymerization of PEDOT to prepare the NiCoP / CC-PEDOT composite material. The NiCoP / CC material prepared by an electrochemical deposition method has a more complex electronic structure, and the catalytic performance of the material is enhanced, so that an amorphous material has higher activity than a crystalline material. The surface of the CC / NiCoP composite electrode material is coated with a layer of PEDOT to block the reaction of the material in a neutral environment so as to play a role in protecting the electrode material. Lauryl sodium sulfate is added into the deposition liquid so as to better disperse the EDOT monomer. Meanwhile, the ClO4 <-> provides anions required by the PEDOT to absorb from a solution in the electropolymerization process, so that the PEDOT is successfully polymerized.

The invention discloses a method for electrochemical synthesis of a fluoro seven-membered benzosultam compound, and belongs to the technical field of organic synthesis. According to the method for electrochemical synthesis of the fluoro seven-membered benzosultam compound, in a diaphragm-free electrolytic tank, ortho-alkynyl substituted benzenesulfonamide and sodium trifluoromethanesulfinate are used as raw materials, constant-current electrolysis is performed in an acetonitrile electrolyte system containing lithium perchlorate, and the seven-membered sulfonamide compound is obtained through separation and purification. Wherein the mass ratio of ortho-alkynyl-substituted benzenesulfonamide to sodium trifluoromethanesulfinate is 1: 1.2, the anode is a net-shaped glassy carbon electrode, and the cathode is a platinum sheet. According to the method, green chemistry is used as guidance, efficient and environment-friendly synthesis is achieved, metal residue pollution and harsh reaction conditions are avoided, operation safety and industrial feasibility are improved, sodium trifluoromethanesulfinate is used as a CF3 source, the fluoro seven-membered benzosultam compound is synthesized in one step, and a simple path is opened up for developing novel antibacterial drugs.