42 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.

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 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 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 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 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.

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 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.

The application relates to the technical field of lithium batteries, in particular to a solid electrolyte, a battery and a preparation method thereof. In the application, fluorine polymers (including a composite of multiple fluorine polymers) are used as a matrix, ion plastic crystals and lithium salts are introduced, the component structure is adjusted and controlled, and the proportion of each component is optimized, so that a fluorine polymer / plastic crystal solid electrolyte is prepared. In the application, the solid electrolyte prepared by the above method has high room temperature ionic conductivity, and can realize fast charging and long cycle of a lithium secondary battery.

The present disclosure relates to a polymer electrolyte. The polymer electrolyte includes a lithium salt polymer including an anionic functional group and including a salt having the anionic functional group and lithium, and a substance having plastic crystal properties. The present disclosure provides polymer electrolytes that improve electrical properties, in particular polymer electrolytes that improve lithium ion transference number.

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 present disclosure relates to a polymer electrolyte. The polymer electrolyte includes a lithium salt polymer including an anionic functional group and a salt with lithium, and a substance having plastic crystal properties. The present disclosure provides the polymer electrolyte improved in electrical performance, in particular, the polymer electrolyte improved in lithium ion transport number.

The invention discloses a polyurethane-plastic crystal electrolyte, a preparation method thereof and a solid-state battery, and belongs to the technical field of lithium ion batteries. The electrolyte is a solid electrolyte and comprises a polyurethane framework and a plastic crystal mixed filler, polyurethane comprises thermoplastic polyurethane rubber and a polyurethane adhesive, the thermoplastic polyurethane rubber provides a basic framework, a three-dimensional penetrating network is formed through in-situ polymerization of the polyurethane adhesive, and the framework structure of polyurethane is further strengthened. The plastic crystal filler is filled in the three-dimensional network skeleton structure in a mode of mixing ionic plastic crystals and non-ionic plastic crystals. Due to the flexible structure of polyurethane, good flexibility is provided for the solid electrolyte, and due to the matching combination of nonionic plastic crystals and ionic plastic crystals, the stability of negative electrode metal lithium is effectively improved; the preparation method is simple and efficient, the assembled solid-state battery is excellent in mechanical strength, high in ionic conductivity and wide in electrochemical stability window, and lithium dendrites can be remarkably inhibited.

This invention relates to the field of solid-state refrigeration materials with pressure-sensitive effects, and discloses a technical method for improving the adiabatic temperature change decay of plastic crystal materials under constant pressure cycling conditions. The method involves uniformly mixing ammonium iodide plastic crystal grains with silicone oil to form a coating composite system with lubricating and isolating functions. A spherical shell encapsulation structure is then fabricated using PA12 nylon powder via laser sintering 3D printing. The composite system is filled and sealed within the spherical shell to form a stable encapsulation unit. During programmed pressurization and depressurization cycles of the encapsulation unit under constant pressure conditions, the silicone oil effectively reduces inter-grain friction and stress concentration, while the spherical shell structure prevents the loss of the coating medium and maintains the integrity of the system, thereby significantly suppressing the decay of the adiabatic temperature change of the plastic crystal material with increasing cycle count.

The invention discloses a manufacturing method of a ceramic-based all-solid-state battery. The manufacturing method comprises the following steps: preparation of a solid electrolyte, preparation of an organic ion plastic crystal transition layer, preparation of a positive plate and preparation of a negative plate, and sequentially laminating the positive plate, the organic ion plastic crystal transition layer, the solid electrolyte, the organic ion plastic crystal transition layer and the negative plate, and carrying out hot pressing to obtain the all-solid-state battery. Organic ion plastic crystal solids are clamped between the positive plate and the solid electrolyte as well as between the negative plate and the solid electrolyte to serve as transition layers, and the organic ion plastic crystal transition layers are ensured to be tightly attached and contacted with the positive plate, the negative plate and the solid electrolyte in a heating and pressurizing manner, so that the interface battery is effectively reduced, and the cycle performance is improved.

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 application relates to a preparation method and application of a composite plastic crystal electrolyte with a molecular brush. The application belongs to the technical field of electrolyte materials. The composite plastic crystal polymer electrolyte material with the molecular brush is characterized in that the composite plastic crystal polymer electrolyte material is composed of a diaphragm with a molecular brush and a plastic crystal electrolyte obtained by in-situ polymerization in the diaphragm. A mixed solution of polymer monomers, lithium salt, additives and plastic crystal materials is heated to obtain the plastic crystal electrolyte. The application aims to solve the problem of uncontrollable side reactions in the plastic crystal electrolyte, so that the assembled battery can be stably and long-term cycled at room temperature. The preparation method comprises the following steps: (1) preparing the diaphragm with the molecular brush; (2) preparing a mixed solution of the polymer monomers, the lithium salt and the plastic crystal material, and mixing the mixed solution with the treated diaphragm. The application has the advantages of simple preparation process, good mechanical strength, long cycle life of the assembled battery and the like.

The present disclosure provides an electric double layer capacitor with an electrolyte layer which suppresses leakage current and has high ion conductivity. The electric double layer capacitor includes a pair of electrode bodies and an electrolyte layer. The electrode bodies have polarizable electrodes. The electrolyte layer includes ionic liquid plastic crystals.

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.