15 results about "Main group element" patented technology

The application provides a main group element ion doped zero-dimensional metal halide fluorescent sensing material and a preparation method and application thereof, and belongs to the technical field of fluorescent sensing materials. The main group element ion doped zero-dimensional metal halide microcrystal is synthesized by a solvothermal method, the strong dependence of two thermal coupling energy levels of the main group element ion on temperature is utilized, the main group element ion doped zero-dimensional metal halide shows an obvious temperature dependence evolution trend of fluorescence lifetime and fluorescence intensity at low temperature, and dual-mode (fluorescence intensity ratio / fluorescence lifetime) high-sensitivity temperature detection in a liquid helium temperature region can be realized. The synthesis method is simple in process and easy to control in synthesis conditions, the obtained material shows extremely high relative sensitivity in the liquid helium temperature region, has high practical application value, can be used as a novel optical temperature sensing material, and can be used for temperature detection in various extreme temperature regions.

Disclosed are a cathode materials suitable for an aluminium ion battery, wherein the cathode materials comprise a main group element nitride, and an oxide of a main group element or an oxide of a element in Group 1 to 13. The nitride is preferably a 2-dimensional layered material. Preferably, the ratio of the main group element nitride to the oxide is between 5:95 and 95:5 (by weight).

To provide a light emitting element with excellent external quantum efficiency.SOLUTION: In a light emitting element having an anode, a cathode, and a first layer and a second layer arranged between the anode and the cathode, the first layer contains a specific metal complex and a low-molecular-weight compound composed solely of main-group elements, the second layer contains a crosslinked body of a polymer compound, and the polymer compound contains constituent units having a group represented by formula (XL-A) and constituent units having a group represented by formula (XL-B) different from the group represented by formula (XL-A).SELECTED DRAWING: None

The present disclosure provides a hard magnetic material with strong perpendicular magnetic anisotropy and preparation and application thereof, a general formula of the hard magnetic material with strong perpendicular magnetic anisotropy is R x A 1‑x BO 2.5 , wherein the R is a lanthanide element; the value of x is within 0.01 to 0.50; the A is selected from the group of group IIA main group elements, and the B is selected from the group of 3d transition metal elements; the atomic structure of the material is an alternately stacked structure of one layer of B-O tetrahedron and one layer of B-O octahedron, observed along the c-axis direction of the crystal structure. The hard magnetic material has strong magnetic anisotropy, and the strong magnetic anisotropy and saturation magnetization of the material can be controllably modulated.

This invention discloses a sulfide solid electrolyte comprising a substrate and co-doped elements, including M and N, where M≠N and M and N are transition metals or main group elements with different valence states. M is used to replace cation sites in the substrate, and N is used to replace anion sites in the substrate. M and N have a co-doping combination relationship, replacing either cation or anion sites. Based on this, the invention also discloses a method for preparing the above material. The invention has the following technical advantages: the material bulk effectively prevents the initiation and penetration of Na dendrites. The heterovalent co-doping strategy is precisely designed to ensure that while enhancing mechanical stiffness, the ion transport mechanism is not impaired, maintaining a high level of superionic conductivity. This avoids the use of complex and expensive external composite materials or multilayer interface coatings to enhance mechanical properties in ASSSIBs, simplifying the manufacturing process and reducing manufacturing costs.

A catalytic system comprising a vessel configured with a controllable heating environment; and a catalyst composition disposed in the vessel, the catalyst composition comprising at least one transition metal atomically dispersed in a matrix of at least one main group element, wherein the catalyst composition is an amorphous solid configured to promote carbon-hydrogen bond activation and carbon-carbon bond transformation of an organic material under thermal conditions, and wherein the catalytic system is operated in an inert atmosphere.

A manufacturing method of a lithium ion secondary battery is provided. A positive electrode active material having a layered rock salt type crystal structure, such as lithium cobaltate, is provided with two regions on the surface thereof, wherein the inner region is a non-stoichiometric compound containing a transition metal such as titanium, and the outer region is a compound of a main group element such as magnesium oxide. Each of the two regions has a rock salt type crystal structure. The layered rock salt type crystal structure of the inner region and the two regions of the surface layer portion are topologically derived, whereby changes in the crystal structure of the positive electrode active material due to charging and discharging can be effectively suppressed. Furthermore, because the outer coating layer in contact with the electrolyte uses a compound of a main group element that is chemically stable, a secondary battery with superior cycle characteristics can be provided.

The application discloses a method for inhibiting A element whisker growth in MAX phase friction material, comprising the following steps: step one, mixing M, A, C and M' elements, sintering under argon protection without pressure to obtain a MAX phase solid solution with M site solid solution elements, wherein M element is a transition metal element, A element is a main group element, and M' element is V, Cr or Nb; the molar ratio of (M+M'), A and C is 2:(1-1.2):1; step two, acid washing the MAX phase solid solution with M site solid solution elements, stirring reaction, vacuum filtration and vacuum drying. The application can fundamentally inhibit A element whisker growth, has simple preparation process, low cost, can be applied to high temperature and high humidity environment, has good corrosion resistance; the solid solution strengthening of the MAX solid solution hinders the decomposition of the MAX phase, cuts off the material source required for the surface A whisker growth, can effectively inhibit the whisker growth, and resist damage such as polishing, polishing, scratching and ball milling.

The invention belongs to the technical field of inorganic non-metallic materials, and particularly relates to an A-site silicon-containing MAX-phase layered material and a preparation method and application thereof, the molecular formula of the MAX-phase layered material is Mn + 1AXn, M is one or more of IIIB, IVB, VB or VIB group elements; a is a silicon element or an alloy formed by silicon and other main group elements or subgroup elements in any proportion; x is one or more of carbon, nitrogen and boron; n is 1, 2, 3 or 4; the preparation method comprises a gas phase reaction method or a solid phase reaction method, for example, taking an MAX phase precursor and a silicon-containing substance as raw materials, reacting at a specific temperature and atmosphere, and washing and drying to obtain a target product. The method is easy and convenient to operate and wide in applicability, and controllable preparation of the A-site silicon-containing MAX phase with the M site being a non-titanium element is achieved for the first time. According to the invention, the material system of the Si-MAX phase is obviously expanded, and the problems that the original Si-MAX phase is limited in variety and the M-site element type is limited are solved.

The present application discloses a catalyst and preparation method therefor and use therefor. The catalyst comprises: an alumina support and an active component, wherein the alumina support comprises alumina, a IA main group element component and silicon element, based on the total weight of the support, a content of the IA main group element component is in a range from 510 ppm to 25,300 ppm, and a content of silicon element is in a range from 10ppm to 300ppm; and a ratio of an acid amount at low temperature to an acid amount at high temperature of the support is 1 or more. The present application improves the stability of the support, enhances the selectivity and activity of the catalyst, and extends the lifespan of the catalyst by limiting the content of the IA main group element component, the content of the silicon element, and the acid amount at low temperature and acid amount at high temperature in the support.

Provided are: a catalyst composition with which high reaction activity can be obtained even in an activation treatment at a lower temperature; an ammonia synthesis catalyst; and an ammonia synthesis method using the same. A catalyst composition according to the present invention is characterized by containing the additive represented by formula (1) and the catalyst substance represented by formula (2).　Formula (1): AH2-x (In formula (1), A is a metal element containing at least one element selected from the group consisting of Zr and Mg, and x represents a numerical value where 0 ≤ x ≤ 2.)　Formula (2): MpOqCwNsHt (In formula (2), M represents one or more elements selected from the group consisting of the main-group elements and the transition elements, but where M does not simultaneously include aluminum (Al) and calcium (Ca), p represents a numerical value of 1 or more, q represents a numerical value of 0 or more, w represents a numerical value of 0 or more, s represents a numerical value of 0 or more, and t represents a numerical value of 0 or more. However, q, w, s, and t are not simultaneously 0.)

The application relates to the technical field of solid electrolytes, in particular to a co-doped sodium-based sulfide solid electrolyte and a preparation method and application thereof, wherein a Na2S-NaD nanoeutectic precursor is prepared by pre-high-energy ball milling of a sodium source and sodium halide, then the precursor is mixed with the remaining raw materials and sintered at a low temperature of 300-450 DEG C, so that the product forms a nanocrystal-glass composite structure which cannot be obtained by a traditional high-temperature solid-phase method. The unique structure can eliminate the inherent grain boundary impedance of the crystalline material, provide isotropic and continuous three-dimensional transmission channels for sodium ions, significantly reduce the diffusion barrier, and realize ultra-high ionic conductivity far exceeding that of the same-component crystalline material. Meanwhile, the application realizes multi-element synergistic doping by adopting the main group elements M of IV / V to partially replace the position of phosphorus elements and co-substitute the cations with fixed tungsten element doping, so that the lattice can be stabilized, stress can be released, the sodium ion diffusion barrier can be reduced, and the synergistic improvement of high air stability, high structural stability and high ionic conductivity can be realized.

The application relates to a Cr 3+ A novel fluorosulfate matrix deep red luminescent material doped with Cr 2(1‑a) A 2a Al (1‑b) B b SO4F3:xCr 3+ , 0<=a<=1, 0<=b<=0.5, A is at least one of first main group elements or monovalent Ag, Cu and Au, B includes one of trivalent ions of Ga, In, TI and Sc, and the luminescent center is Cr 3+ . A preparation method of the luminescent material is as follows: raw materials are weighed according to stoichiometric ratios of substances, are ground to mix uniformly, are pre-sintered, are ground again, are calcined again after mixing more uniformly, and are obtained after centrifugation, drying and sieving. Compared with the prior art, the Cr 3+ doped novel fluorosulfate matrix deep red luminescent material prepared by the application has simple synthesis process, and in addition, hydrogen fluoride harmful to human beings and environment or toxic and easily-decomposed ammonium fluoride is not needed to provide a fluorine source in the synthesis process.

This carbon dioxide gas absorbing material contains a composite metal oxide which is represented by formula (1) NaATiBMCOD (wherein 5 ≤ A ≤ 11, 4 ≤ B ≤ 6, 0 ≤ C ≤ 2, 10.5 ≤ D ≤ 17.5, and M is selected from among transition elements and typical elements), and / or this carbon dioxide gas absorbing material contains a composite metal oxide which contains sodium and titanium. The composite metal oxide shows peaks at diffraction angles 2θ of 12.0° ± 0.5° and 12.6° ± 0.5°, respectively, and also shows one or two peaks in the range from 39.1° ± 0.5° to 41.0° ± 0.5° in a powder X-ray diffraction pattern obtained using CuKα rays.

A permanent magnetic composition comprising the formula:(LaxMyNd1-x-y)rFevM′zCo14-v-zBw  (1)wherein 0.1≤x<1, 11≤v≤14, 0≤y≤0.3, 0≤z≤0.5, 1.9≤r≤3, 0.1≤(x+y)<1, 11≤(v+z)≤14, and 1.0≤w≤1.1, wherein M represents one or more lanthanide elements other than La and Nd, and M′ represents one or more transition metal elements other than Fe and Co, or M′ represents one or more main group elements other than B; or the permanent magnet may be more particularly described by the formula (LaxNd1-x)rFevCo14-vBw or LaNdFe12Co2B, wherein x, v, and w are defined above. Also described herein are methods for producing the permanent magnet.