72 results about "Plastic crystals" patented technology

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 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.

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.

An electric fireplace having multi-function flame includes a housing, a projection screen, a plastic screen, plastic crystals, a first illuminating device, a flame image plate, a reflection assembly, and a second illuminating device. The first illuminating device can shoot a single color or two colors or a combination of more than two colors of light. The second illuminating device includes a plurality of second lights disposed on a second circuit board. Each of the second lights includes at least two different chips. The second illuminating device can shoot a single color or two colors or a combination of more than two colors of light. The present invention can generate single or multi-color flame to achieve a multi-function purpose. The change effect of the movement and color of the flame can be more perfect and realistic and appreciation.

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 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 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.