72 results about "Plastic crystal" patented technology

The invention discloses a multi-scale synergistically enhanced self-healing solid polymer electrolyte and a preparation method thereof, and belongs to the technical field of electrolyte materials. The preparation method of the electrolyte comprises the following steps: S1, adding the eight-arm star polymer, the carborane lithium salt, the neutral plastic crystal additive, the ionic liquid monomer and the crown ether functionalized boron alkene two-dimensional filler into a mixed solvent to form electrolyte slurry; s2, uniformly coating a base material with the electrolyte slurry to form a wet film, and drying the wet film; s3, transferring the dried membrane to an environment filled with inert gas, and initiating in-situ polymerization of an ionic liquid monomer by using ultraviolet irradiation to form a polyionic liquid nanofiber network; and S4, placing the membrane under a vacuum condition at a constant temperature of 120 DEG C for 5 hours to obtain the solid polymer electrolyte membrane. The solid polymer electrolyte membrane provided by the invention overcomes the problems of low ionic conductivity, low lithium ion transference number, insufficient mechanical properties, poor interface stability, narrow electrochemical window and the like of the existing solid polymer electrolyte.

An electrode for an all-solid-state energy storage device, the electrode comprising an electrode composition comprising an electroactive material and an internal ionic binder in the form of at least one organic ionic plastic crystal (OIPC) and ion transport salt composite which supports comparable performance of the electrode to one using liquid electrolyte.

The utility model discloses a lithium ion battery temperature control tool which comprises a temperature control part, the temperature control part is of a box body structure, first heat conduction gel and second heat conduction gel are arranged in the temperature control part, and a space used for containing a battery is arranged between the first heat conduction gel and the second heat conduction gel. By arranging the plastic crystal material, the heat-conducting gel and the heat storage layer, through solid-phase refrigeration and material heat storage, the stability of the battery can be effectively controlled, and by matching with a charging and discharging detection cabinet, the stability of the battery can be effectively controlled, so that the battery can be conveniently charged and discharged, and the service life of the battery can be prolonged. And moreover, the liquid leakage risk is avoided, the refrigeration efficiency is high, energy is saved, and low-carbon and environment-friendly effects are achieved.

The invention provides a polymer electrolyte. The polymer electrolyte comprises the following components in percentage by weight: 1 to 90 percent of cross-linked polymer, 0.01 to 50 percent of plastic crystal and 0.01 to 20 percent of lithium salt, the plastic crystal is selected from 1-azabicyclo [2.2. 2] octane and a derivative of 1-azabicyclo [2.2. 2] octane. The invention also provides a preparation method of the polymer electrolyte, a polymer solid-state battery and a preparation method of the polymer solid-state battery. According to the invention, the 1-azabicyclo [2.2. 2] octane and the derivative thereof are used as additives to be added into the polymer electrolyte, on one hand, the 1-azabicyclo [2.2. 2] octane and the derivative thereof can be homogenized with the polymer, so that the growth of lithium dendrites is inhibited, the safety performance of the polymer solid-state battery is greatly improved, and on the other hand, the side reaction between an active substance and an electrode can be reduced; and the short-circuit prevention performance of the battery is improved, so that the safety performance of the battery is further improved.

The invention relates to an elastic solid electrolyte with a lithium ion selective transmembrane transmission characteristic and a preparation method thereof. The elastic solid electrolyte is composed of a component A, a component B and a component C, wherein the component A comprises 12-35 parts by weight of an amphiphilic copolymer composed of a polar chain segment and a non-polar chain segment, and the weight ratio of the polar chain segment is 5-45%; the component B is 36-60 parts by weight of plastic crystal electrolyte and is formed by dissolving plastic crystals and lithium salt, and the weight ratio of the plastic crystals to the lithium salt is 1: (0.2-0.7); and the component C comprises 20-36 parts by weight of a reactive monomer and a lithium salt, and the weight ratio of the reactive monomer to the lithium salt is 1: (0.2-0.4). The preparation method comprises the following steps: firstly, preparing a fiber network elastic solid electrolyte by virtue of electrostatic spinning induced phase separation, and coating a fibrous continuous plastic crystal B by virtue of an elastomer layer A with lithium ion selective permeability; and performing in-situ polymerization on the component C to realize gap filling to obtain the elastic solid electrolyte. The solid electrolyte not only has very high ionic conductivity, but also has high mechanical strength, and the rate capability and the cycle life of the solid lithium battery are remarkably improved and prolonged.

The invention discloses a fluorinated polymer and application thereof in an electrode protection layer and a solid electrolyte, and belongs to the technical field of lithium metal secondary batteries, and the fluorinated polymer is obtained by reacting acrylate functionalized polyethylene glycol, HFBA and an initiator. When the fluorinated polymer is used as a lithium metal negative electrode protective layer, the LiFePO4 / Li total battery protected by the polymer shows more excellent cycle performance compared with an unprotected total battery. And the battery is stable in cycle performance, high in capacity retention rate and low in capacity fading speed. When the fluorinated polymer is applied to the solid-state electrolyte, the polymer solid-state electrolyte in which a polymer network wraps an ionic conductive plastic crystal can be formed through an in-situ reaction, so that the growth of Li dendritic crystals is effectively inhibited, and the stability of the polymer electrolyte and a lithium negative electrode is ensured. Moreover, the solid electrolyte can be adapted to a high-nickel ternary positive electrode material, and a thought is provided for realizing a stable and safe high-energy-density battery.

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.

The invention belongs to the technical field of solid-state sodium metal batteries, and particularly relates to a solid-state plastic crystal electrolyte as well as a preparation method and application thereof. The solid plastic crystal electrolyte is mainly composed of two phases, wherein the first phase is a plastic crystal phase composed of succinonitrile, sodium salt and a fluoroethylene carbonate additive; the second phase is a polymer network phase formed by mixing two monomers with double bonds in proportion; the two phases are mixed according to a certain ratio and then subjected to in-situ curing under the action of an initiator and heating. The sodium metal battery prepared from the electrolyte simultaneously realizes good contact, high safety and good electrochemical performance of an electrolyte / electrode interface. The problems of safety of a traditional liquid electrolyte, poor electrochemical performance of a solid electrolyte and the like are solved. The method has great significance in application of the high-safety plastic crystal type electrolyte, and the application range of the solid plastic crystal type electrolyte in a sodium battery system is widened.

The present invention belongs to the field of sodium metal batteries, and relates to the preparation of an in-situ solid-state metal-organic framework-based solid electrolyte and its application in sodium metal batteries. In this application, the sulfonic acid functionalized metal-organic framework material is first formed into a flexible film of a certain thickness by a rolling method, and a precursor solution containing a plastic crystal electrolyte and polyethylene glycol diacrylate is injected, and finally an in-situ solid-state metal-organic framework-based solid electrolyte is obtained after several hours at a certain temperature. The plastic crystal electrolyte can transport sodium ions faster and has a higher ionic conductivity. The in-situ solidification of polyethylene glycol diacrylate promotes the construction of a uniform and stable interface between the electrolyte / electrode, thereby successfully suppressing the interfacial side reactions. The solid electrolyte of the present invention not only has a higher ionic conductivity, but also has better interface stability, thereby optimizing the electrochemical performance of the solid-state sodium metal battery and achieving high performance of the solid-state sodium metal battery.

The present invention belongs to the technical field of battery materials, and discloses an electrolyte for improving battery safety, a preparation method and an application thereof. An electrolyte comprises an ion plastic, a polyfluoride and a lithium salt; the polyfluoride does not include a fluorinated polyoxyethylene ether. The electrolyte of the present invention is non-flammable, highly safe, and has good lithium conductivity. When applied to a battery, the first coulomb efficiency and cycle performance of the battery can be improved.

The invention belongs to the technical field of lithium ion batteries, and relates to a double-layer all-solid-state electrolyte containing a polyalkylene oxide layer, a preparation method of the double-layer all-solid-state electrolyte and a lithium ion battery. The double-layer all-solid-state electrolyte comprises a polyalkylene oxide electrolyte layer and a plastic crystal electrolyte layer, the polyalkylene oxide electrolyte layer contains polyalkylene oxide, inorganic ceramic fast ion conductor filler and lithium salt; and the plastic crystal electrolyte layer contains butanedinitrile and lithium salt. The double-layer all-solid-state electrolyte provided by the invention has higher conductivity and more excellent cycle performance.

The utility model provides a bendable crystal strip which comprises a plurality of plastic crystal single bodies, the section of each plastic crystal single body is in an L shape, the side walls of one sides of every two adjacent plastic crystal single bodies in the section direction are connected through a plastic crystal, and the plastic crystal and the two adjacent plastic crystal single bodies are integrally formed. The side walls of the other sides, in the section direction, of every two adjacent plastic crystal single bodies are spaced by a certain distance to form a buffer gap, and the buffer gaps are used for providing bending receding of the crystal strips. By adopting the scheme, for the crystal chain, the material cost of the crystal lamp is further reduced on the basis of saving the assembly cost; for a PC crystal strip structure, the PC crystal strip structure is made of a crystal integrated material, so that a light-transmitting form that a light source directly irradiates on the front surface of the crystal strip can be met, various light emitting modes that the light source emits light on the back surface, the side surface and the end surface of the crystal strip can be realized, and a crystal strip-shaped frame is not arranged, so that the thickness is relatively thin, and the light emitting brightness is increased.

The invention belongs to the field of heat storage application, and particularly relates to a supercooled plastic crystal composite material with a controllable magnetic field and a preparation method and heat storage application of the supercooled plastic crystal composite material. The performance that the supercooled plastic crystal can be regulated and controlled by pressure is utilized, after the supercooled plastic crystal is mixed with the magnetic powder, attraction force can be generated on the magnetic powder through a magnetic field, then stress is generated on the supercooled plastic crystal, and therefore non-contact magnetic field induction plastic crystal composite materials are subjected to phase change in the indirect mode. Therefore, the supercooled plastic crystal material is combined with the magnetic powder, the limitation of an induction phase change mode of the current supercooled plastic crystal material is expected to be solved, non-contact and non-damage magnetic field controllable phase change heat release is realized, and the application scene of the supercooled plastic crystal material is greatly expanded.

The present invention discloses a cooling cable, comprising at least one first wire core, a first cooling layer wrapping the first wire core, and a rigid sheath sleeved on the periphery of the first cooling layer, the first cooling layer comprising a first cooling medium and a first pressure member, the first cooling medium is made of a plastic crystal, the first pressure member is made of a heat-shrinkable and cold-expandable material, the cooling cable is at room temperature, the heat-shrinkable and cold-expandable material is in an expanded state, and applies pressure to the plastic crystal to keep the molecules of the plastic crystal in an ordered state; when the temperature of the first wire core rises, the heat-shrinkable and cold-expandable material is in a contracted state, and the pressure applied by the heat-shrinkable and cold-expandable material on the plastic crystal is reduced, so that the plastic crystal transitions from an ordered state to a disordered state and absorbs heat, thereby reducing the temperature of the first wire core. According to the cooling cable disclosed in the present invention, the temperature of the first wire core is reduced, and the current-carrying capacity of the first wire core is improved; compared with liquid-cooled cables with circulating coolant, the structure is simple and easy to produce.

The present invention provides: an electrolytic capacitor which is capable of maintaining low ESR while using a conductive polymer and a plastic crystal; and a manufacturing method. The electrolytic capacitor is provided with an electrolyte layer between a pair of electrodes. The electrolyte layer contains a plastic crystal and conductive polymers that are obtained by adhering a conductive polymer liquid which contains conductive polymers and a neutralizing agent. The electrolyte layer contains no metal ions that are derived from the neutralizing agent. A method for manufacturing this electrolytic capacitor includes an electrolyte layer forming step for filling a space between the pair of electrodes with the conductive polymer liquid in which the conductive polymers are dispersed or dissolved, and drying the conductive polymer liquid. The conductive polymer liquid contains no metal ions.

The application discloses a PVDF-based solid electrolyte and a preparation method and application thereof, and relates to the technical field of batteries, and specifically discloses a PVDF-based solid electrolyte, which comprises a PVDF polymer matrix, a lithium salt, an organic ionic plastic crystal material and residual solvent. The PVDF-based solid electrolyte provided by the application is applied to a lithium metal battery, can improve lithium ion migration capacity, reduce an ion migration energy barrier, and improve capacity retention rate and cycle stability of the battery.

The invention discloses a high-voltage-resistant flame-retardant electrolyte and a lithium metal battery, the high-voltage-resistant flame-retardant electrolyte comprises a lithium salt, a nitrile-based plastic crystal solvent, a diluent and an additive, the diluent is a fluorinated ether solvent and / or a fluorinated phosphazene flame retardant, and the additive comprises a fluorocarbonate solvent. According to the invention, the fluorinated / or phosphazene diluent is introduced into the nitrile electrolyte to form a solvation structure rich in anions, so that the stability of the nitrile electrolyte to a lithium metal negative electrode is improved, and meanwhile, the intrinsic characteristic of high voltage resistance and the characteristic of high safety are maintained; the problems of high viscosity and poor wettability of a high-concentration plastic nitrile electrolyte are effectively solved, the advantage of high energy density of a lithium metal battery can be effectively exerted, and meanwhile, the safety of the lithium metal battery is improved. The fluorinated solvent is used as the lithium protection additive, so that the cycle life of the lithium metal battery can be prolonged.

The present invention relates to a polymer solid electrolyte comprising: an ion-conductive polymer; organic ionic plastic crystals containing imidazolium; and a lithium salt. The polymer solid electrolyte according to an aspect can simultaneously achieve excellent ion conductivity and electrochemical stability.

A battery component and a method for forming a battery component are described. The battery component can include a negative electrode assembly, a positive electrode assembly, and a solid electrolyte membrane layered between the negative and positive electrode assemblies. The solid electrolyte membrane has a binder matrix containing sulfide-based solid electrolyte particles with plastic crystal electrolyte particles occupying pores between the sulfide-based solid electrolyte particles.

The application discloses a kind of self-healing solid-state polymer electrolyte of multiscale synergistic enhancement and preparation method thereof, belong to electrolyte material technical field.The preparation method of electrolyte: S1, eight-arm star polymer, lithium carborane salt, neutral plastic crystal additive, ionic liquid monomer, crown ether functionalized boronene two-dimensional filler are added into mixed solvent to form electrolyte slurry;S2, electrolyte slurry is uniformly coated on substrate to form wet film, and is dried;S3, the film of drying is transferred to the environment filled with inert gas, and in-situ polymerization of ionic liquid monomer is initiated using ultraviolet irradiation to form polyionic liquid nanofiber network;S4, the film is placed at 120 DEG C under vacuum condition for 5 h, and solid-state polymer electrolyte film is obtained.The solid-state polymer electrolyte film of the application overcomes the problems of low ionic conductivity, low lithium ion transference number, insufficient mechanical properties, poor interface stability, narrow electrochemical window and other problems existing in existing solid-state polymer electrolyte.

The present technology relates to an ionic plastic crystal comprising at least one delocalized anion paired with at least one an organic guanidine, amidine or phosphazene organic superbase-derived cation for use in electrochemical applications, particularly in electrochemical accumulators such as batteries, electrochromic devices, and supercapacitors. The present technology also relates to an ionic plastic crystal composition, an ionic plastic crystal-based solid electrolyte composition, an ionic plastic crystal-based solid electrolyte, an electrode material comprising the ionic plastic crystal or the ionic plastic crystal composition. Their uses in electrochemical cells and electrochemical accumulators as well as their processes of manufacturing and an NHO-stabilized intermediary ion-neutral complex are also described.

The invention relates to the technical field of solid-state phase change energy storage, in particular to application of a 1, 6-anhydro-beta-D-glucopyranose material in controllable solid-state phase change heat storage. A material 1, 6-dehydrated-beta-D-glucopyranose with a supercooled plastic crystal phase is innovatively applied to the field of solid-solid phase change heat storage / heat release and serves as a heat storage working medium in solid phase change heat storage, and the controllable heat storage and release effect is achieved based on the irreversible piezothermal effect of the heat storage working medium. The material can be converted from an ordered crystal phase to a disordered plastic crystal phase at the temperature not lower than 387K, meanwhile, heat up to 380J kg <-1 > K <-1 > can be absorbed, and the purpose of heat storage can be achieved while the temperature of a heat source is reduced. After heat absorption is completed, the material can be converted into a supercooled plastic crystal phase through cooling, at least 315 J kg <-1 > K <-1 > heat can be released by applying pressure not lower than 9.3 MPa to the material, and the surface temperature of the material can be increased by 49 K.

The present invention discloses a method for realizing pressure sensing based on the pressure response of glass crystals and its application, belonging to the technical field of pressure-sensitive phase change materials. The method includes: (1) heating a crystal material sample to a temperature exceeding the phase change temperature point to make it in a high-temperature plastic crystal phase state; (2) quickly cooling and quenching the sample in the high-temperature plastic crystal phase state to make its temperature lower than the phase change temperature to obtain glass crystals or supercooled plastic crystals; (3) applying an external pressure to the glass crystals (or supercooled plastic crystals) to cause them to undergo a phase change to crystals, and realizing the purpose of pressure sensing according to the changes in their optical and / or electrical properties. This method can be applied to security alarm technology and the preparation of color-changing glass.

A substrate treatment liquid which contains a curing component and satisfies at least one of the following conditions (i) and (ii): (i) the curing component is a plastic crystal compound having a melting point of 20 DEG C to 200 DEG C (inclusive); and (ii) the substrate treatment liquid further contains a surface modifying component.

The invention belongs to the technical field of phase change heat storage and heat exchange, and particularly relates to a heat exchange and heat storage method and system for realizing controllable heat absorption and release time sequence based on a periodic mechanical stress triggered plastic crystal non-equilibrium phase, a lower cold fluid applies thrust to a baffle when flowing, if the cold fluid and the hot fluid are gas, a pressure difference exists between the upper side and the lower side of a roller, and if the cold fluid and the hot fluid are gas, the pressure difference exists between the upper side and the lower side of the roller; rolling the drum; in the rolling process, the steel balls in the steel ball cylinder reciprocate along the path of the steel ball cylinder under the action of gravity, and when the steel ball cylinder moves to the lower part of the roller, the steel balls impact the inner wall of the roller to induce the plastic crystal material to be converted from an unbalanced phase to an ordered crystal phase, so that heat is released; when the steel ball cylinder moves to the upper part of the roller, the steel balls do not impact the inner wall of the roller, and the material is converted into a plastic crystal phase from a crystal phase again and absorbs heat. The device is simple in overall structure, high in stability and easy to maintain; meanwhile, the heat exchange process is more continuous, large temperature difference between the module and cold and hot fluid can be kept all the time, the heat exchange efficiency is improved, meanwhile, the heat exchanger is suitable for various working conditions, and specific heat exchange fluid states and types are not required.

The invention discloses a positive electrode material as well as a preparation method and application thereof, and relates to the technical field of batteries. The positive electrode material is coated with a composite plastic crystal composed of an ionic plastic crystal and a lithium salt in a molar ratio of 1: 3-1: 5; in the preparation of the positive pole piece, the problems of interface impedance and stability of sulfide electrolyte are solved through the dielectric property and fluidity of composite plastic crystal by using a non-polar mixed solvent, a composite plastic crystal infiltration process and low-temperature annealing treatment for cooperative treatment during the preparation of the positive pole piece; a specific type of non-polar mixed solvent is selected, so that dissolution and decomposition of sulfide electrolyte can be reduced to the maximum extent; a three-dimensional lithium conduction network formed by infiltration of the composite plastic crystal coating layer and the melt ensures that the sulfide electrolyte constructs a continuous transmission path in a wet process; and the low-temperature annealing treatment promotes interface fusion of plastic crystals and sulfide electrolyte to form a stable high-conductivity ion phase, so that the comprehensive performance of the battery is promoted to be remarkably improved.

The invention belongs to the field of lithium ion batteries, and relates to a silver salt modified polyacrylonitrile quasi-solid electrolyte, a preparation method thereof and a lithium ion battery. The quasi-solid polymer electrolyte comprises polyacrylonitrile, a lithium salt, a plastic crystal and a silver ion additive, based on the total weight of the quasi-solid electrolyte, the weight content of the polyacrylonitrile is 35-65%, the weight content of the lithium salt is 20-50%, the weight content of the plastic crystal is 3-35%, and the weight content of the silver ion additive is 0.01-10%. The strong oxidizing property of Ag < + > ions is utilized, a large number of Ag nano-particles can be formed on the surface of the Li negative electrode, the particles can serve as nucleation sites, uniform deposition of Li on the negative electrode side is induced, and improvement of the cycle performance of the solid-state battery is promoted. The quasi-solid electrolyte provided by the invention has higher conductivity and better cycle performance.

This invention relates to the field of new materials, specifically to an organic ionic plastic crystal that facilitates the conduction of anions and cations and its preparation method. The method involves adding different concentrations of anion and cation additives to a tetrafluoroborate-based quaternary ammonium salt plastic crystal, dissolving them in an appropriate amount of acetonitrile, stirring thoroughly, removing the solvent by rotary evaporation, and then vacuum drying to obtain a mixture doped with different concentrations of anions and cations. The tetrafluoroborate-based quaternary ammonium salt plastic crystal obtained by the above method exhibits an ionic conductivity close to practical values ​​after the introduction of anions and cations. The internal conduction of anions and cations can improve the conductivity of the organic ionic plastic crystal, providing a possibility for developing solid electrolytes with high conductivity.

The present invention provides zwitterionic plastic crystal (ZIPC) compounds in unimolecular form, comprising: at least one positively charged functional group carrying at least one positive charge, and at least one negatively charged functional group carrying at least one negative charge, wherein the positively charged functional group and the negatively charged functional group are covalently linked together in the molecule and the net charge of the zwitterionic compound is zero, and wherein the compound exhibits evidence of molecular disorder in the solid state.

A battery component and methods of forming a battery component are presented. The battery component may include a negative electrode assembly, a positive electrode assembly, and a solid electrolyte membrane layered between the negative electrode assembly and the positive electrode assembly. The solid electrolyte membrane has a binder matrix containing sulfide-based solid electrolyte particles with plastic crystal electrolyte particles occupying pores between the sulfide-based solid electrolyte particles.