81 results about "Plastic crystal" patented technology

A temperature regulating gel includes a hydrophilic polymeric substrate and a heat-storing material. The hydrophilic polymeric substrate may include a natural hydrogel, a synthetic hydrogel, or any combination thereof. The heat-storing material may include a phase change material, a plastic crystal, or any combination thereof. The present invention also discloses a temperature regulating article including the temperature regulating gel.

Disclosed is an electrolyte for an electrochemical device. The electrolyte includes a composite of a plastic crystal matrix electrolyte doped with an ionic salt and a crosslinked polymer structure. The electrolyte has high ionic conductivity comparable to that of a liquid electrolyte due to the use of the plastic crystal, and high mechanical strength comparable to that of a solid electrolyte due to the introduction of the crosslinked polymer structure. Further disclosed is a method for preparing the electrolyte. The method does not essentially require the use of a solvent. Therefore, the electrolyte can be prepared in a simple manner by the method. The electrolyte is suitable for use in a cable-type battery whose shape is easy to change due to its high ionic conductivity and high mechanical strength.

Unique thermoplastic (polypropylene, specifically) monofilament and/or tape fibers and yarns that exhibit heretofore unattained physical properties are provided. Such fibers are basically manufactured through the extrusion of thermoplastic resins that include a certain class of nucleating agent therein, and are able to be drawn at high ratios with such nucleating agents present, that the tenacity and modulus strength are much higher than other previously produced thermoplastic fibers (particularly those produced under commercial conditions), particularly those that also simultaneously exhibit extremely low shrinkage rates. Thus, such fibers require the presence of certain compounds that quickly and effectively provide rigidity to the target thermoplastic (for example, polypropylene), particularly after heat-setting. Generally, these compounds include any structure that nucleates polymer crystals within the target thermoplastic after exposure to sufficient heat to melt the initial pelletized polymer and allowing such an oriented polymer to cool. The compounds must nucleate polymer crystals at a higher temperature than the target thermoplastic without the nucleating agent during cooling. In such a manner, the "rigidifying" nucleator compounds provide nucleation sites for thermoplastic crystal growth. The preferred "rigidifying" compounds include dibenzylidene sorbitol based compounds, as well as less preferred compounds, such as [2.2.1]heptane-bicyclodicarboxylic acid, otherwise known as HPN-68, sodium benzoate, talc, certain sodium and lithium phosphate salts [such as sodium 2,2'-methylene-bis-(4,6-di-tert-butylphenyl)phosphate, otherwise known as NA-11]. Specific methods of manufacture of such inventive thermoplastic fibers, as well as fabric articles made therefrom, are also encompassed within this invention.

This invention relates to a compound type polymer dielectric stuff and its preparation method, belong to electrochemistry and new energy stuff region. It composed by copolymer of fluoro ethylene and hexafluoro-propylene, lithium salts and plastic crystal stuff. Processing steps: take copolymer, lithium salts and plastic crystal stuff, use solvent to dissolve, whip go as far as uniformity, then pour above solution to teflon tooting, evaporate solvent, finally vacuum drying. While this compound type electrolyte stuff in rather wide temperature range and all components are solid-state, the ionic conductivity can reach using standard of lithium Secondary Battery. It overcomes shortcoming of traditional gel-type polymer dielectric that liquid electrolyte easily leak as well as plastic crystal electrolyte unease form film, and also combine the merit that polymer dielectric easily form film as well as plastic crystal electrolyte has high room temperature ionic conductivity.

Unique thermoplastic monofilament fibers and yarns that exhibit heretofore unattained physical properties are provided. Such fibers are basically manufactured through the extrusion of thermoplastic resins that include a certain class of nucleating agent therein, and are able to be drawn at high ratios with such nucleating agents present, that the tenacity and modulus strength are much higher than any other previously produced thermoplastic fibers, particularly those that also simultaneously exhibit extremely low shrinkage rates. Thus, such fibers require the presence of certain compounds that quickly and effectively provide rigidity to the target thermoplastic (for example, polypropylene), particularly after heat-setting. Generally, these compounds include any structure that nucleates polymer crystals within the target thermoplastic after exposure to sufficient heat to melt the initial pelletized polymer and allowing such an oriented polymer to cool. The compounds must nucleate polymer crystals at a higher temperature than the target thermoplastic without the nucleating agent during cooling. In such a manner, the "rigidifying" nucleator compounds provide nucleation sites for thermoplastic crystal growth. The preferred "rigidifying" compounds include dibenzylidene sorbitol based compounds, as well as less preferred compounds, such as [2.2.1]heptane-bicyclodicarboxylic acid, otherwise known as HPN-68, sodium benzoate, certain sodium and lithium phosphate salts [such as sodium 2,2'-methylene-bis-(4,6-di-tert-butylphenyl)phosphate, otherwise known as NA-11]. Specific methods of manufacture of such inventive thermoplastic fibers, as well as fabric articles made therefrom, are also encompassed within this invention.

Disclosed is a solid electrolyte for an electrochemical device. The solid electrolyte includes a composite consisting of: a plastic crystal matrix electrolyte doped with an ionic salt; and a network of a non-crosslinked polymer and a crosslinked polymer structure. The electrolyte has high ionic conductivity comparable to that of a liquid electrolyte due to the use of the plastic crystal, and high mechanical strength comparable to that of a solid electrolyte due to the introduction of the non-crosslinked polymer/crosslinked polymer structure network. Particularly, the electrolyte is highly flexible. Further disclosed is a method for preparing the electrolyte. The method does not essentially require the use of a solvent. Therefore, the electrolyte can be prepared in a simple manner. The electrolyte is suitable for use in a cable-type battery whose shape is easy to change due to its high ionic conductivity and high mechanical strength in terms of flexibility.

A solid ionic electrolyte having an organic plastic crystal solvent (e.g. succinonitrile) doped with lithium bioxalato borate salt (LiBOB) may be used in an electrochemical device. Electrochemical devices are disclosed having a cathode, an anode, and a solid ionic electrolyte having a neutral organic plastic crystal solvent doped with LiBOB alone or in combination with another lithium salt. Such devices have a stable electrolyte interface over a broad potential window combined with high energy density delivery capacity and, in one example, the favourable properties of a neutral organic plastic crystal matrix such as succinonitrile.

The invention discloses a porous membrane reinforced polymer-plastic solid electrolyte membrane, a preparation method thereof and application thereof. The polymer-plastic solid electrolyte membrane includes a support layer including a porous membrane and a polymer-plastic solid electrolyte layer covering at least one side of the surface of the porous membrane, wherein the porous membrane plays therole of a support frame and has a continuous three-dimensional network structure, the mechanical properties of the solid electrolyte membrane can be improved, and at the same time, the preparation ofa thinner solid electrolyte membrane is facilitated by the porous membrane support frame. The polymer-plastic solid electrolyte layer contains a polymer, lithium salt and a plastic crystal compound,and a porous membrane reinforced flexible polymer-plastic solid electrolyte membrane with high voltage resistance and high low-temperature conductivity can be obtained by optimizing the proportions ofthe polymer, the lithium salt and the plastic crystal. The polymer-plastic solid electrolyte membrane can be applied to an all-solid lithium-ion battery, the preparation process is simple, and the polymer-plastic solid electrolyte membrane is suitable for industrial production.

The invention discloses a composite solid electrolyte material, a preparation method thereof, and an all-solid-state battery. The all-solid-state battery includes a positive electrode layer, a negative electrode layer, and the composite solid electrolyte material positioned between the positive electrode layer and the negative electrode layer. The composite solid electrolyte material includes polyoxyethylene, an inorganic powder having a high ionic conductivity, a plastic crystal compound and a lithium salt. The preparation method comprises the following steps: weighing the polyoxyethylene andthe lithium salt in proportion, adding the weighed substances to an organic solution, and performing stirring to obtain a solution A; weighing the inorganic powder and the plastic crystal compound inproportion, adding the weighed substances to the solution A, and performing stirring to obtain a uniformly mixed suspension B; and pouring the suspension B into a mold, and drying the suspension B inthe mold to obtain the organic/inorganic composite solid electrolyte material. The composite solid electrolyte material has an obviously improved room-temperature ionic conductivity and an enhanced electrochemical stability, and has a stable interface contact with a positive electrode and a negative electrode, and the capacity attenuation problem of the all-solid-state battery formed by assembling the composite solid electrolyte material is significantly improved.

The invention discloses an all-solid-state organic alloy electrolyte for a dye-sensitized solar battery and a preparation method thereof. The electrolyte comprises an organic alloy material prepared from more than two or three plastic crystals selected from succinonitrite, neopentyl glycol, trimethylolethane, pentaerythritol, camphor, imidazole and the derivative quaternary ammonium salt thereof and pyridine and the derivative quaternary ammonium salt thereof, iodine accounting for 1-5 percent of the amount of substance of the organic alloy, lithium iodide or potassium iodide or sodium iodide accounting for 1- 10 percent of the amount of substance of the organic alloy and one or more of methyl ethyl imidazole iodine, tert-butyl pyridine, LiTFSI and LiBF4 conducting salt, which account for 1- 10 percent of the amount of substance of the organic alloy. The prepared electrolyte has a high melting point (more than 80 DEG C) and equivalent electrical conductivity with a liquid electrolyte, and the dye-sensitized solar battery (DSSCs) prepared from the electrolyte has high photoelectric transformation efficiency and stability.

Self-assembled, closed and hollow chemical multimer structures having a dodecahedral morphology, composed of chemical monomers having a structurally symmetric core which possess a 5-fold rotational symmetry, are provided. Also provided are methods of creating such chemical monomers, methods of creating such chemical multimer structures and compositions comprising these chemical multimer structures. Also provided are uses of these chemical multimer structures in applications such as drug delivery, imaging, immunization, formation of plastic crystals and nanoparticle matrices and other medical and material science applications.

The invention provides a novel efficient solid-state refrigeration method driven by pressure of plastic crystal materials. Plastic crystals are orientation ordered-unordered transformed organic molecular crystals or inorganical crystals with molecules or structural units. The plastic crystals are transformed in a solid state by a two-step melting process along with entropy change and enthalpy change comparable to the melting process. The phase change can be induced by lower pressure to generate huge pressure clamping effect. Taking the plastic crystal materials-neopentyl glycol as an example,the thermal insulation temperature change of 9 K is generated under the pressure of 20 MPa to achieve higher advantage compared with other pressure clamping effect material systems.

Unique thermoplastic monofilament fibers and yarns that exhibit heretofore unattained physical properties are provided. Such fibers are basically manufactured through the extrusion of thermoplastic resins that include a certain class of nucleating agent therein, and are able to be drawn at high ratios with such nucleating agents present, that the tenacity and modulus strength are much higher than any other previously produced thermoplastic fibers, particularly those that also simultaneously exhibit extremely low shrinkage rates. Thus, such fibers require the presence of certain compounds that quickly and effectively provide rigidity to the target thermoplastic (for example, polypropylene), particularly after heat-setting. Generally, these compounds include any structure that nucleates polymer crystals within the target thermoplastic after exposure to sufficient heat to melt the initial pelletized polymer and allowing such an oriented polymer to cool. The compounds must nucleate polymer crystals at a higher temperature than the target thermoplastic without the nucleating agent during cooling. In such a manner, the "rigidifying" nucleator compounds provide nucleation sites for thermoplastic crystal growth. The preferred "rigidifying" compounds include dibenzylidene sorbitol based compounds, as well as less preferred compounds, such as [2.2.1]heptane-bicyclodicarboxylic acid, otherwise known as HPN-68, sodium benzoate, certain sodium and lithium phosphate salts [such as sodium 2,2'-methylene-bis-(4,6-di-tert-butylphenyl)phosphate, otherwise known as NA-11]. Specific methods of manufacture of such inventive thermoplastic fibers, as well as fabric articles made therefrom, are also encompassed within this invention.

The invention provides a solid-state electrochemical component, a solid-state electrochemical device and a preparation method of the solid-state electrochemical component. The solid-state electrochemical assembly includes a solid-state electrochemical functional layer and a plastic crystal interlayer in physical contact with the solid-state electrochemical functional layer, the plastic crystal interlayer including a plastic crystal matrix and an ion conductive compound and an additive dispersed in the plastic crystal matrix. The assembly, the solid-state electrochemical device, and the methodof preparing the same of the present invention improve interface resistance between an electrode and a solid-state electrolyte.

The invention discloses a solid-state electrolyte applied to a lithium battery and a preparation method of the solid-state electrolyte. The solid-state electrolyte at least comprises trihydroxymethylpropane trimethyl acrylate (TMPTMA), a plastic crystal and a lithium salt. The plastic crystal is used as the solid-state electrolyte of a substrate, the lithium salt can be dissociated by high polarity and high diffusion performance of a plastic crystal phase, and the prepared solid-state electrolyte is enabled to have relatively high ion conductivity and electrochemical window stability; and bycombination of a polymer and the plastic crystal, the film formation performance and the mechanical strength of the solid-state electrolyte can be improved, the plastic crystal also have an effect ofa plasticizer, and the solid-state electrolyte is enabled to have relatively high ion conductivity when the plastic crystal is wrapped in holes of the polymer.

The invention discloses an on-line plastic crystallinity measuring method based on a pressure sensor and a temperature sensor. The on-line measuring method comprises the following steps of: (1) constructing a relation curve of the pressure, specific volume and temperature of plastic, namely a PVT curve; (2) measuring pressure and temperature values of the plastic in a mould in real time by utilizing the pressure sensor and the temperature sensor; (3) calculating the current specific volume v of the plastic according to the PVT curve in combination with the pressure and temperature values measured in real time; (4) calculating the specific volume va when the plastic crystallinity is 0 and the specific volume vc when the plastic crystallinity is 1 according to the PVT curve; (5) calculating the current crystallinity Xc of the plastic. Through the on-line measurement of the crystallinity by using the temperature sensor and the pressure sensor, the invention provides a new universal method for on-line measurement on the plastic crystallinity which is low in price, easy to operate, high in precision and wide in application range, and can be used for solving the difficult problem that the plastic crystal morphology generally only can be measured off-line.

The invention provides a solid electrolyte, a preparation method thereof and a lithium ion battery. The solid electrolyte comprises a polymer electrolyte framework and a plastic crystal electrolyte atleast filled in the polymer electrolyte framework, wherein the composition of the polymer electrolyte framework comprises a polymer and a lithium salt. The solid electrolyte has excellent conductivity and mechanical strength, and after the solid electrolyte is applied to the lithium ion battery, the cycle life of the lithium ion battery can be remarkably prolonged.

The invention discloses a boron-containing plastic crystal polymer and a preparation method and application thereof. The preparation method includes the following step of curing a mixture containing plastic crystals, metal salt, monomers and a photoinitiator to obtain the boron-containing plastic crystal polymer. The plastic crystal polymer prepared by the method can be used as an all-solid electrolyte, no liquid additive is added, and the obtained electrolyte room temperature ion conductivity can be as high as 3.6*10<-4> S/cm; and meanwhile, the high sodium ion migration number and the wide electrochemical window are be exhibited and can be as high as 4.7 V. In addition, in order to construct a stable electrode/electrolyte interface to reduce the interface impedance, a composite positiveelectrode and negative electrode are prepared for positive and negative electrode modification of a sodium ion battery, and the finally-assembled all-solid sodium ion battery exhibits the good rate capability and the cycle stability at room temperature, the specific discharge capacity at room temperature can be as high as 104.8 mAh/g, and the capacity retention rate is 85.4% after circulation by 80 circles.

The present invention provides an ionic liquid or plastic crystal comprising an anion and a cation, the anion comprising [C(SO₂F)₃]⁻, and the cation comprising at least one member selected from the group consisting of 1-ethyl-3-methylimidazolium ([EMI]⁺), N,N-diethyl-N-methyl-(2-methoxyethyl)ammonium ([DEME]⁺), N-methyl-N-propylpyrrolidinium ([Py₁₃]⁺), N-methyl-N-propylpiperidinium ([PP₁₃]⁺), tetramethylammonium ([N₁₁₁₁]⁺), tetraethylammonium ([N₂₂₂₂]⁺), trimethylhexylammonium ([N₆₁₁₁]⁺), triethylhexylammonium ([N₆₂₂₂]⁺), N-methyl-ethylpyrrolidinium ([Py₁₂]⁺), 1-butyl-3-methylimidazolium ([C₄mim]⁺), and 1-hexyl-3-methylimidazolium ([C₆mim]⁺).