41 results about "Succinonitrile" patented technology

The invention provides a battery and an electric device. A positive plate comprises a positive active material, and the positive active material is doped and / or coated with a lanthanum element; the surface of the diaphragm is coated with a ceramic coating; the electrolyte comprises a first solvent, a second solvent, a first additive and a second additive; the first solvent comprises a cyclic carbonate compound, the second solvent comprises a chain fluorosulfonamide compound, the first additive comprises mannitol carbonate sulfate, and the second additive comprises succinonitrile; the lanthanum element is doped / coated on the positive active material, so that the release of lattice oxygen at high voltage or high temperature can be effectively inhibited, and the exothermic reaction activity at the thermal runaway initial temperature is reduced; the first additive and the second additive in the electrolyte respectively form a compact CEI film and an SEI film with high thermal stability on the surfaces of the positive electrode and the negative electrode; the diaphragm ceramic coating provides a physical barrier, the thermal shrinkage temperature of the diaphragm is increased, and internal short circuit is prevented.

The invention discloses a low-temperature high-conductivity composite solid-state electrolyte membrane and a preparation method and application thereof, and relates to the technical field of solid-state lithium battery materials, the low-temperature high-conductivity composite solid-state electrolyte membrane comprises: a polymer matrix composed of poly (1, 3-dioxolame) and a polyvinylidene fluoride-hexafluoropropylene copolymer; the ion conduction network is composed of a metal organic framework filler with the surface modified with-SO3Li groups and sulfonic acid lithiated carbon nanotubes arranged in the axial direction of the polymer matrix; a first anti-freezing interface layer and a second anti-freezing interface layer are arranged on the surfaces of the two opposite sides of the polymer matrix, and the first anti-freezing interface layer and the second anti-freezing interface layer are butanedinitrile-glutaronitrile eutectic plastic crystal layers composed of butanedinitrile, glutaronitrile, lithium salt and a nano reinforcing agent respectively. The solid electrolyte is suitable for polar scientific investigation equipment, spacecrafts and other low-temperature environments, and solves the industrial problems of sharp increase of low-temperature grain boundary impedance and interface contact failure of the traditional solid electrolyte.

A solid electrolyte material contains an Li salt that has a fluorine-containing anion, an in organic filler, and a polymer. The inorganic filler has a surface modified with a fluorinated alkyl. The solid electrolyte material further includes succinonitrile. The inorganic filler contains at least one selected from the group consisting of SiO2, TiO2, ZrO2, and MgO; and the fluorinated alkyl contains at least one of a 1H, 1H, 2H, 2H-tridecafluoro-n-octyl group and a 1H, 1H, 2H, 2H-heptadecafluorodecyl group.

Provided in the present application are a secondary battery and an electronic device. The secondary battery comprises a positive electrode sheet, a negative electrode sheet, and an electrolyte solution. The positive electrode sheet comprises a composite current collector and a positive electrode material layer provided on at least one surface of the composite current collector. The positive electrode material layer comprises a lithium nickel cobalt manganese oxide compound. On the basis of the total molar amount of metal elements other than lithium, the molar percentage content of nickel in the lithium nickel cobalt manganese oxide compound is X, wherein X>80%. The electrolyte solution comprises adiponitrile and succinonitrile. On the basis of the mass of the electrolyte, the mass percentage content of adiponitrile is B1, and the mass percentage content of succinonitrile is B2, wherein 0.01≤X×B1 / B2≤90. The present application can improve the capacity retention ratio and lithium ion acceptance of a secondary battery after a high- or low-temperature impact test.

The invention provides a lithium battery negative electrode with an interface polymer stable interface layer and a preparation method and application of the lithium battery negative electrode. The preparation method comprises the following steps: providing an alloy negative electrode substrate of which the surface is modified by an organic lithium interface layer; and coating a polymer electrolyte precursor containing an electron-deficient double-bond polymer monomer, lithium salt and succinonitrile on the surface of the negative electrode, sealing and standing for 1-24 hours, and triggering the electron-deficient double-bond polymer monomer to generate in-situ anionic polymerization on the surface of the alloy negative electrode substrate by using an organic lithium interface layer as an initiator, thereby obtaining the lithium ion battery negative electrode. A polymer interface layer chemically bonded with the substrate is formed on the surface of the lithium battery negative electrode. Through an innovative interfacial polymerization technology, a stable polymer interface layer is constructed on the surface of the alloy negative electrode, and the interface stability, the electrochemical performance, the structural integrity, the process practicability and other dimensions are remarkably improved.

The invention belongs to the field of organic chemical synthesis, and relates to a method for preparing butanediamine and co-producing pyrrolidine by using butanedinitrile, which comprises the following steps: S1, reacting acrylonitrile with hydrocyanic acid in a fixed bed reactor filled with a first catalyst to obtain butanedinitrile; the first catalyst is filled in a fixed bed reactor in a solid form, and the first catalyst comprises a carrier and an active component loaded on the carrier. And S2, dissolving the butanedinitrile obtained in the step S1 into a pyrrolidine ionic liquid solvent, then adding a second catalyst and alkali, then introducing hydrogen, and reacting to obtain butanediamine and pyrrolidine. According to the method, continuous and easy-to-separate production of butanedinitrile is realized, a by-product is directionally converted into tetrahydropyrrole with a high added value through a specific reaction system, and the safety, the economical efficiency and the resource utilization rate of the process are remarkably improved.

This invention discloses a photolithographically patternable lithium-ion electrolyte, its preparation method, and its applications. The electrolyte is a photolithographically curable lithium-ion electrolyte composition, comprising, by mass percentage, LiTFSI, polyethylene glycol methyl ether methacrylate, bisphenol A ethyl oxide dimethacrylate, fluoroethylene carbonate, succinic acid, 2-hydroxy-2-methyl-1-phenyl-1-propanone (HMPP), 3-(isobutyryloxy)propyltrimethoxysilane, and 2-methyl-2-acrylate-2-hydroxyethyl. This invention also discloses a stepwise preparation method for this composition and its applications in micro-energy storage and ion-electronic devices such as micro solid-state batteries, ion-controlled transistors, and neuromorphic devices. This electrolyte can be patterned at the micro-nano scale using standard photolithography processes, exhibiting excellent lithium-ion conductivity, electrochemical stability, mechanical flexibility, and optical transparency. It also shows good interface compatibility with gold electrodes / silicon wafers, requiring no additional etching or transfer processes. This solves the technical problems of existing solid-state electrolytes being difficult to fabricate at the micro-nano scale and incompatible with microelectronic processes, and has broad application prospects in the fields of micro-nano fabrication and micro-devices.

The present disclosure provides a solid electrolyte material capable of suppressing a decrease in ion conductivity. The solid electrolyte material is characterized by containing a polymer electrolyte, an inorganic filler, and butanedinitrile, and the polymer electrolyte contains an anionic polymer.

The application discloses a kind of etching liquid in the field of etching liquid, by weight, containing hydrogen fluoride 6-9%, butanedinitrile 5-8%, ethanol 15-20%, and the balance is ultrapure water.The complexation reaction of butanedinitrile and hydrofluoric acid can be prevented in the application, and the hydrolysis of hydrofluoric acid is prevented.The complex can be gradually dissociated by temperature control, so that the effective concentration of hydrofluoric acid in the solution can be maintained, and there is no need to frequently supplement hydrofluoric acid into the solution or constantly prepare new hydrofluoric acid solution, and there is no need to use other surfactants.The etching liquid has the advantages of long-acting, stable and low cost, and can be used in the etching processing of vehicle-grade silicon nitride chip.

A solid electrolyte material capable of suppressing a decrease in ionic conductivity is provided. The solid electrolyte material includes a polymer electrolyte, an inorganic filler, and succinonitrile, wherein the polymer electrolyte includes an anionic polymer.

Provided in the present application are a secondary battery and an electronic device. The secondary battery comprises a positive electrode sheet, a negative electrode sheet, and an electrolyte solution. The positive electrode sheet comprises a composite current collector and a positive electrode material layer provided on at least one surface of the composite current collector. The positive electrode material layer comprises a lithium nickel cobalt manganese oxide compound. On the basis of the total molar amount of metal elements other than lithium, the molar percentage content of nickel in the lithium nickel cobalt manganese oxide compound is X, wherein X>80%. The electrolyte solution comprises adiponitrile and succinonitrile. On the basis of the mass of the electrolyte, the mass percentage content of adiponitrile is B1, and the mass percentage content of succinonitrile is B2, wherein 0.01≤X×B1 / B2≤90. The present application can improve the capacity retention ratio and lithium ion acceptance of a secondary battery after a high- or low-temperature impact test.

A secondary battery includes a positive electrode plate, a negative electrode plate, a separator, and an electrolyte. The positive electrode plate includes a positive electrode current collector, and a positive electrode active material layer and an inorganic coating are provided on a surface of the positive electrode current collector. The electrolyte includes an additive, and the additive includes at least one of lithium difluorophosphate, succinonitrile, adiponitrile, 1,3,6-hexanetricarbonitrile, or 1,2,3-tris(2-oxyethoxy)propane. A mass per unit area of the inorganic coating is A g / m2, and based on a mass of the electrolyte, a mass percentage of the additive is B %, satisfying 0.01≤B / A≤5. Selection of the foregoing additives and control of B / A within the foregoing range are conducive to improving high-temperature safety performance of the secondary battery at high voltage.

This application discloses a solid electrolyte separator based on esterified cellulose and its preparation method, specifically including the following steps: first, esterified cellulose derivatives are obtained by modifying cellulose acetate as a base with 4-methylphthalic anhydride; then, the esterified cellulose derivative is dissolved in N,N-dimethylformamide with lithium bis(trifluoromethanesulfonylimide) and succinate, mixed evenly, coated onto a mold, and vacuum dried to obtain the separator. This separator exhibits good mechanical properties and interfacial stability, effectively suppressing lithium dendrite growth and improving battery safety. Lithium metal batteries assembled using this separator demonstrate high discharge specific capacity and good cycle stability, making them suitable for high-energy-density solid-state lithium batteries.

The application provides an electrolyte, an electrochemical device containing the electrolyte and an electronic device. The electrolyte comprises ethylene carbonate, propylene carbonate and fluoroethylene carbonate. The mass percentage of ethylene carbonate is a, 1.0% <= a <= 20%, the mass percentage of propylene carbonate is b, 12% <= b <= 35%, based on the mass of the electrolyte. The electrolyte further comprises an additive B. The additive B comprises at least one of butanedinitrile, hexanedinitrile, 1,4-dicyano-2-butene, ethylene glycol dicyan ether, 1,3,6-hexanetrimethylnitrile or 1,2,3-tris(2-cyanooxy)propane. The mass percentage of the additive B is 0.5% to 4%, based on the mass of the electrolyte. The electrochemical device with the electrolyte has good high-temperature storage performance and cycle performance.

The invention relates to a preparation method and application of a deep eutectic gel polymer electrolyte, and belongs to the technical field of chemical power sources, and the specific scheme comprises the following steps: heating and melting 1, 1-thiophane-3-yl methacrylate and succinonitrile according to a certain mass ratio to obtain a deep eutectic solvent; the preparation method comprises the following steps: cooling to room temperature, adding alkali metal ion salt and a diluent into a deep eutectic solvent, fully stirring to obtain a deep eutectic electrolyte, adding a cross-linking agent and a thermal initiator into the deep eutectic electrolyte to obtain a precursor solution, and initiating copolymerization of 1, 1-thiophane-3-yl methacrylate and the cross-linking agent under a heating condition to obtain the deep eutectic electrolyte. The deep eutectic gel polymer electrolyte is obtained. The invention provides a novel high-safety electrolyte which is suitable for a lithium ion battery system and a sodium ion battery system.

This invention relates to the field of novel energy storage materials, specifically to an ultra-high capacity tellurium-based material with a six-electron conversion mechanism and its manganese ion storage application. The material system of this invention includes a tellurium-based active material as the working electrode and an ion transport medium adapted to it; wherein the tellurium-based active material is a composite material of tellurium and carbon-based materials; the ion transport medium is a hydrated eutectic system, including manganese salt, hydrogen bond donor water, and hydrogen bond acceptor succinate. This invention successfully activates the deep six-electron conversion reaction (Te6000) of the tellurium-based material in an aqueous environment. 2‑ ↔Te 4+ This breakthrough overcomes the capacity bottleneck of traditional four-electron reactions. The material system not only exhibits excellent conductivity but also demonstrates ultra-high specific capacity and excellent cycle stability, providing a novel material solution for constructing high-specific-energy storage devices.

The invention discloses a synthesis method of amber ether and a used catalyst. According to the synthesis method, cyclododecanol and diethoxymethane are used as raw materials, and an acetal exchange reaction is performed in the presence of a catalyst to obtain the amber ether, the catalyst is prepared by the preparation method comprising the following steps: 1) carrying out hydrothermal reaction on a silicon source in an acid solution in the presence of a polymer template agent, a surfactant and inorganic salt, and removing the polymer template agent and the surfactant to obtain mesoporous silica microspheres; and 2) carrying out a sulfonation reaction on the mesoporous silica microspheres and concentrated sulfuric acid to obtain the catalyst, the inorganic salt being zinc chloride, and the molar concentration of the acid solution being 1.5-8 mol / L. The synthesis method can realize high conversion rate of raw materials and high selectivity of the target product amber ether, and is suitable for industrial production.

The invention belongs to the field of organic chemical synthesis, and relates to a process for preparing butanediamine by using acrylonitrile and hydrocyanic acid through a one-pot method, which comprises the following steps: placing acrylonitrile, hydrocyanic acid, a hydrocyanation catalytic component and a hydrogenation catalytic component in the same reactor, and reacting in a nitrogen atmosphere, the preparation method comprises the following steps: carrying out a hydrocyanation addition reaction on acrylonitrile and hydrocyanic acid under the action of a hydrocyanation catalytic component to generate a succinonitrile intermediate, adding hydrogen into a reaction system for boosting without separation treatment, carrying out a catalytic hydrogenation reaction under the action of a hydrogenation catalytic component, and carrying out separation treatment to obtain butanediamine. According to the method, two-step reaction is integrated into a single reactor and intermediate separation is avoided, so that the process is fundamentally simplified, the equipment investment and the operation cost are reduced, meanwhile, the material loss caused by unstable intermediates is reduced, the production efficiency and the total yield of products are improved, and the method is suitable for industrial production. And the transfer of toxic materials is reduced, so that the process safety is improved.

The invention discloses a PEO / garnet type solid-state composite electrolyte prepared by using a plasma technology, and a preparation method and application thereof, and belongs to the technical field of solid-state batteries. The method comprises the following steps: dissolving PEO, lithium salt, succinonitrile and garnet type solid electrolyte filler in an organic solvent to form a precursor solution; placing the solution in plasma equipment; under the vacuum and low-temperature conditions, gas excitation liquid is introduced, plasma is excited, a precursor is treated for a short time, and thorough removal of an organic solvent and in-situ cross-linking curing of a PEO matrix are achieved in one step. According to the invention, the dual effects of the plasma technology are utilized, the problems of solvent residue and uneven filler dispersion in the traditional method are fundamentally solved, and the prepared composite electrolyte has high ionic conductivity, high lithium ion transference number and excellent lithium metal stability. The method is simple in process, efficient and energy-saving, is suitable for preparing a high-performance solid-state battery, and has a wide industrial application prospect.

The invention discloses a sodium-based ion eutectic solid electrolyte and an application thereof in a high-performance sodium metal battery, and belongs to the field of electrochemical energy storage. The electrolyte is formed by cocrystallizing sodium perchlorate and succinonitrile according to a molar ratio of 1: (2.6-3.2); an ordered-disordered coexisting crystal structure is constructed on the molecular scale: Na < + > and part of SN molecules and ClO4 <-> respectively occupy regular coordination skeleton sites, and extra SN molecules fill lattice gaps in an orientation disordered manner, so that a continuous three-dimensional sodium ion transmission channel is established, and anions are effectively fixed; naClO4 (SN) x can be subjected to in-situ fusion-infiltration-resolidification after the battery is assembled, electrode pores and interface gaps are fully filled, interface impedance is reduced, collaborative optimization of ion migration efficiency and interface compatibility is realized through eutectic structure design and an in-situ fusion process, and the performance of the battery is improved. The invention provides a solid electrolyte solution for safe and efficient operation of the sodium metal battery, and has a wide application prospect.

The invention discloses a succinonitrile composite modified PEO-based solid electrolyte and a preparation method thereof. The electrolyte comprises sodium carbonate, DMF (Dimethyl Formamide), PAN (Polyacrylonitrile), PEO (Polyethylene Oxide), succinonitrile, LiTFSI (LiTFSI) and acetonitrile, and a porous structure formed by interweaving nanofiber membranes is formed. The preparation method comprises the following steps: carrying out ball milling, drying and calcining on sodium carbonate to obtain Beta powder; dissolving PAN and Beta powder in DMF, and performing electrostatic spinning to obtain a porous film; and finally, compounding a solution of PEO, LiTFSI and succinonitrile with the thin film, and drying to obtain the solid electrolyte. According to the electrolyte, the ionic conductivity and the lithium ion transference number are improved through the cooperation of the ceramic filler, the plastic crystal material and the polymer, the growth of lithium dendrites is inhibited, and the electrode / electrolyte interface stability is improved.

The invention belongs to a solid electrolyte energy storage device, and provides preparation and application of an esterified cellulose-based polymer solid electrolyte membrane with a TFSI-anion anchoring effect. Cellulose acetate is chemically modified to synthesize triacid salt cellulose ester (PCLA), and succinonitrile is introduced for plasticizing to improve chain mobility and ion transport. COOH-TFSI-constructs a stable network to inhibit anion migration, polyester coordination and space charge shielding reduce ion association, Li < + > short-range migration is enhanced, and lithium dendrites are inhibited. And the stable cycle of the LiPCLA QPELi under the condition of 0.4 mA cm <-2 > is over 1100 hours. After the LiPCLA QPELFP battery circulates for 1000 times at 1C and 2C, 80% of initial capacity and 90% of initial capacity are reserved respectively. And the capacity retention ratio of the LiPCLA QPENCM811 battery after 200 times of circulation at 0.5 C is 90%. Meanwhile, the LED is successfully lightened by the soft package battery, and the room-temperature high-performance potential of the soft package battery is proved.

This invention provides a battery and an electrical device, including a positive electrode sheet comprising a positive electrode active material, the positive electrode active material being doped with and / or coated with aluminum; a negative electrode sheet comprising a negative electrode active material, the negative electrode active material comprising silicon particles; an electrolyte comprising a first solvent, a second solvent, a first additive, a second additive, and a third additive; the first solvent comprising ethyl 2,2-difluoroacetate, the second solvent comprising propylene carbonate, the first additive comprising 1,3-propanesulfonate lactone, the second additive comprising vinyl sulfate, and the third additive comprising succinate; this invention, through the synergistic design of a full battery system of "aluminum-modified positive electrode + silicon-based negative electrode + multifunctional composite electrolyte," achieves excellent low-temperature discharge performance, ultra-long cycle life, high interface stability, and outstanding thermal safety characteristics while maintaining high energy density.

Disclosed herein is a solid-state composite polymer electrolyte membrane including a solid-state electrolyte layer and a cured electrolyte layer disposed thereon. The solid-state electrolyte layer includes poly(vinylidene fluoride-co-hexafluoropropylene), lithium bis(trifluoromethanesulfonyl)imide, succinonitrile, and aluminum-doped lithium lanthanum zirconium oxide that is present from 50 wt % to 80 wt % based on 100 wt % of the solid-state electrolyte layer. The first cured electrolyte layer is formed by subjecting a first composition including a first initiator and a first component that includes an acrylic material, lithium bis(trifluoromethanesulfonyl)imide and succinonitrile to a first polymerization reaction. The acrylic material is selected from ethoxylated trimethylolpropane triacrylate, poly(ethylene glycol) dimethacrylate, poly(ethylene glycol) methacrylate, and combinations thereof. An all-solid-state lithium ion battery including the solid-state composite polymer electrolyte membrane is also disclosed.

The application discloses a nitrilase mutant and application thereof in synthesis of gamma-aminobutyric acid derivatives, and relates to a nitrilase mutant with improved catalytic activity and stereoselectivity, which is used for efficiently catalyzing hydrolysis of 2-substituted succinonitrile to synthesize 3-substituted-3-cyanopropionic acid, and further synthesizing gamma-aminobutyric acid derivatives through hydrogenation, thereby laying a foundation for industrialized production of gamma-aminobutyric acid drugs synthesized by the nitrilase method.

A negative electrode interface modification material for a cell is provided. The negative electrode interface modification material comprises succinonitrile, a polymer, a lithium salt, and an additive. A lithium-ion solid-state cell comprising the negative electrode interface modification material is also provided.

The invention belongs to the field of electrolytes, and particularly relates to a double Na ion channel modified solid electrolyte, a preparation method and application thereof and a solid sodium battery, the electrolyte comprises a polymer matrix and a functional material dispersed in the polymer matrix; the polymer matrix comprises PEO (Polyethylene Oxide) and succinonitrile grafted with halogen anions; the functional material is C2 / c in-phase NZSPX (at) NVP, and comprises a core of Na3V2 (PO4) 3 of a C2 / c phase and a shell of Na3Zr2-nXnSi2PO12 of a C2 / c phase, wherein the surface of the core is coated with the shell of Na3Zr2-nXnSi2PO12; x is at least one of Ti, Hf, Nb, Ta, Mo, Cr and Sc, and n ranges from 0.1 to 0.6. According to the invention, PEO and halogen anion grafted succinonitrile are innovatively combined as a polymer matrix, and are further matched with a special C2 / c in-phase NZSPX at NVP functional material, so that synergism can be realized based on the special heterogeneous in-phase and coating characteristics of the functional material and the combination of the combined polymer matrix, and the impedance of the material can be reduced; and the fast charge and long cycle stability of the material are improved.

This invention discloses a low-temperature high-conductivity composite solid electrolyte membrane, its preparation method, and its applications, relating to the field of solid-state lithium battery materials technology. The low-temperature high-conductivity composite solid electrolyte membrane comprises: a polymer matrix composed of poly(1,3-dioxolane) and polyvinylidene fluoride-hexafluoropropylene copolymer; an ion-conducting network composed of a metal-organic framework filler with surface-modified -SO3Li groups and lithium sulfonate carbon nanotubes arranged axially along the polymer matrix; and a first antifreeze interface layer and a second antifreeze interface layer disposed on opposite sides of the polymer matrix, wherein the first and second antifreeze interface layers are respectively succinic anion exchanger-glutaronitrile eutectic plastic crystal layers composed of succinic anion exchanger, glutaronitrile, lithium salt, and nano-reinforcing agents. It is suitable for low-temperature environments such as polar scientific research equipment and spacecraft, solving the industrial problems of drastic increase in low-temperature grain boundary impedance and interface contact failure in traditional solid electrolytes.

This invention discloses a succinic acid-based composite solid electrolyte based on functionalized comonomers regulating lithium-ion migration, its preparation method, and its applications. Belonging to the field of lithium-ion battery electrolyte technology, the composite solid electrolyte comprises succinic acid, a lithium salt, and a polymer framework. The succinic acid and lithium salt form a eutectic system as the main ion-conducting phase, while the polymer framework constitutes a supporting network at a low volume fraction. Functionalized comonomers capable of coordinating with lithium ions are introduced into the polymer framework, thereby regulating the coordination environment and migration behavior of lithium ions in the electrolyte. This invention improves the room-temperature ion conductivity and lithium-ion selective transport capability of the solid electrolyte without significantly increasing the polymer content, while also maintaining good mechanical and electrochemical stability. It is suitable for lithium-ion batteries and other electrochemical energy storage devices, and has promising application prospects.