72 results about "Plastic crystals" 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.

A solid ionic electrolyte having a neutral organic plastic crystal matrix doped with an ionic salt may be used in an electrochemical device having an anode comprising a Li-containing material having an electrochemical potential within about 1.3 V of lithium metal. Electrochemical devices are disclosed having a cathode, an anode of a Li-containing material having an electrochemical potential within about 1.3 V of lithium metal, and a solid ionic electrolyte having a neutral organic plastic crystal matrix doped with an ionic salt. Such devices have high energy density delivery capacity combined with the favourable properties of a neutral organic plastic crystal matrix such as succinonitrile.

The present invention relates to a solid electrolyte for an electrochemical device comprising a plastic crystal matrix electrolyte doped with ionic salt, and a complex of a polymer having a cross-linking structure including a chemically bonded linear polymer having a weight average molecular weight of 100 to 5,000 and one functional group, and to a method for manufacturing same. Since the electrolyte is obtained using the plastic crystal, the electrolyte has good ion conductivity which is a feature of a liquid electrolyte. Since the electrolyte includes the polymer having the cross-linking structure, the electrolyte has good mechanical strength which is a feature of a solid electrolyte. In addition, a solvent is not necessarily required while manufacturing the electrolyte, and therefore a drying process can be omitted to simplify the manufacturing process. The electrolyte has high ion conductivity and the mechanical strength of a solid electrolyte, and therefore the electrolyte can be used in a cable-type battery, the form of which is easily modified.

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.

The invention relates to a plastic crystal polymer electrolyte material prepared by in-situ polymerization and a preparation method therefor, and belongs to the technical field of an electrolyte material. The plastic crystal polymer electrolyte material prepared by the in-situ polymerization comprises a monomer, an initiator, a cross-linking agent, a lithium salt, and plastic crystals; a mixed solution of the monomer, the initiator, the cross-linking agent, the lithium salt and the plastic crystals is heated to be subjected to the in-situ polymerization to obtain the plastic crystal polymer electrolyte material; the preparation method for the plastic crystal polymer electrolyte material prepared by the in-situ polymerization comprises the steps of mixing and dissolving the monomer, the initiator, the cross-linking agent, the lithium salt and the plastic crystals; and pouring the solution into a polytetrafluoroethylene die, and heating and performing the in-situ polymerization to obtain the plastic crystal polymer electrolyte material. By adoption of a one-step method for synthesis, the preparation process is simple and industrial production can be realized favorably; and in addition, the plastic crystal polymer electrolyte material is high in conductivity at room temperature, high in thermal stability and interface stability, high in mechanical property, excellent in electrochemical performance, and the like.

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.

A solid electrolyte for an electrochemical device includes a composite of a plastic crystal matrix electrolyte doped with an ionic salt and a crosslinked polymer structure having a linear polymer as a side chain chemically bonded thereto. The linear polymer has a weight average molecular weight of 100 to 5,000 and one functional group. 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. A method for preparing the solid electrolyte does not essentially require the use of a solvent, eliminating the need for drying. 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 comparable to that of a solid electrolyte.

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.

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 a polymer film electrolyte of an all-solid-state lithium metal battery, a preparation method of the polymer film electrolyte, and an application of the polymer film electrolytein a wide temperature range, and belongs to the technical field of all-solid-state electrolytes. The polymer film is composed of polyethylene oxide, a plastic crystal material and lithium salt. The polymer film has the characteristics of high ionic conductivity and wide electrochemical stability window. The all-solid-state lithium metal battery using the polymer film as the electrolyte has high capacity in a wide temperature range (-5 DEG C to 100 DEG C). The method is simple in technological process and compatible with an existing technology, the production and matching processes of the solid-state lithium metal battery can be effectively simplified, the battery performance is improved, and therefore, the method has great application prospects.

The present invention provides an ionic liquid or plastic crystal comprising anions and cations, said anions including [C(SO2F)3]- and said cations including at least one type 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]+), triimethyl hexyl ammonium ([N6111]+), triethylhexylammonium ([N6222]+), N-methyl-N-ethylpyrrolidinium ([Py12]+), 1-butyl-3-methylimidazolium ([C4mim]+), and 1-hexyl-3-methylimidazolium ([C6mim]+).

The invention provides a solid composite electrolyte membrane, which is composed of a solid polymer electrolyte layer (1) serving as a main body and gel polymer electrolyte layers (2, 3) arranged on the surfaces of the two sides of the solid polymer electrolyte layer (1) respectively, wherein the solid polymer electrolyte layer (1) and the gel polymer electrolyte layers (2, 3) are prepared from apolymer electrolyte composition containing a polymer, a plastic crystal and an electrolyte salt, and the concentration of the electrolyte salt in the solid polymer electrolyte layer (1) is lower thanthe concentration of the electrolyte salt in the gel polymer electrolyte layers (2, 3). According to the solid-state composite electrolyte membrane, the conductivity of a polymer-electrolyte salt system can be improved by several orders of magnitudes, a battery containing the solid-state composite electrolyte membrane can normally operate at room temperature, the contact between a polymer electrolyte and an electrode can be effectively enhanced, and the interface impedance is reduced.

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 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]+).

The invention discloses a plastic crystal ceramic composite solid electrolyte and a low-temperature hot-pressing preparation method thereof. The method comprises the following steps of step 1, weighing oxide ceramic powder and the plastic crystal solid electrolyte, and uniformly mixing to obtain mixed powder; the plastic crystal solid electrolyte comprising a plastic crystal and a lithium salt, step 2, putting the mixed powder into a mold, and flattening the mixed powder; 3, the mixed powder being subjected to compression molding, meanwhile, the mixed powder being subjected to heat treatment,the heating temperature being lower than 600 DEG C, and the plastic crystal solid electrolyte absorbing heat to be molten; and then reducing the temperature to solidify and mold the plastic crystal solid electrolyte to obtain the plastic crystal ceramic composite solid electrolyte. According to the method, densification of the solid electrolyte can be realized at a relatively low temperature, thesolid electrolyte has relatively high ionic conductivity, and the processing time, energy loss and volatilization of a lithium element at a high temperature are greatly reduced.

The present invention relates to a conductor having high conductivity and electrochemical stability, which is in a solid state over a practically wide temperature range. Specifically disclosed is a plastic crystal containing a compound represented by Formula (I) or (IA) below:and at least one compound [BF3(CF3)] salt represented by Formula (II):Mn+[BF3(CF3)−]n  (II)wherein M is an alkaline metal, alkaline earth metal, aluminum or H; and when M is an alkaline metal or H, n is 1; when M is an alkaline earth metal, n is 2; and when M is aluminum, n is 3.

The invention discloses a gel-state electrode and a preparation method thereof. The electrode comprises an electrode active material, a conductive agent, SN, a lithium salt, a polymer and an additive. The preparation method comprises the following steps of dissolving the lithium salt and the additive in SN at 60-80 DEG C, adding the polymer, and fully stirring and dissolving to form a gel-state substance, and then, mixing the prepared gel-state substance, an electrode active material and a conductive agent, stirring or uniformly grinding, and coating one side of a solid electrolyte with the mixture to serve as the gel-state electrode of the solid-state battery. According to the type of the added polymer, whether cross-linking treatment is carried out or not is determined. The lithium salt can be completely dissolved in SN to form a plastic crystal electrolyte, and the selected polymer can also be dissolved in the plastic crystal electrolyte. According to the gel-state electrode provided by the invention, the contact performance between the electrode and the solid electrolyte can be improved, the ion transmission in the electrode can be improved, and the negative effect on the battery performance caused by the volume change generated in the charging and discharging process of the electrode active material can also be inhibited.

A device and method for applying a prearranged pattern (e.g. words, numbers, designs, etc.) of individual decorative elements, such as faceted glass crystals, faceted plastic crystals or rhinestones in unison, with a single application, using a pressure sensitive adhesive to thereby provide for an easy single application of the entire prearranged pattern. The prearranged patterns of decorative elements are sandwiched in between a clear acetate top layer and a coated paper bottom layer. To apply the prearranged pattern to a surface, the coated paper bottom layer is removed, leaving the individual decorative elements attached to the clear acetate top layer, before pressing the top layer against the surface. After pressing the prearranged pattern against the surface, the clear acetate top layer is removed, leaving the prearranged pattern of individual decorative elements firmly attached to the surface.

The invention belongs to the technical field of solid-state batteries, and particularly relates to a solid-state battery based on a plastic crystal modified positive electrode and a preparation method thereof.The preparation method of the solid-state battery based on the plastic crystal modified positive electrode comprises the following steps that firstly, plastic crystal, lithium salt, a polymer and inorganic filler are heated and mixed, and the plastic crystal melted into a liquid state serves as a solvent; 2, mixing positive electrode material powder, a conductive agent, the plastic crystal-based composite positive electrode adhesive obtained in the step 1 and an organic solvent, and coating a current collector with the mixture; and 3, preparing a plastic crystal-based positive electrode surface treatment liquid, coating or spraying the plastic crystal-based positive electrode surface treatment liquid on the surface of the positive electrode layer obtained in the step 2, and carrying out in-situ polymerization by adopting heating or irradiation. According to the solid-state battery based on the plastic crystal modified positive electrode and the preparation method of the solid-state battery, the interface compatibility and the compatibility with a high-specific-energy electrode material are improved, and the problem that the battery performance cannot be brought into full play due to poor battery interface contact and low material conductivity is solved.