51results about "Germanium compounds" patented technology

The invention discloses a modified solid-state electrolyte and a preparation method and application thereof, and relates to the field of solid-state batteries, in 300 crystal face grain size distribution of the modified solid-state electrolyte, Kn90 = (Ln90-Ln10) / Ln50, and Kn90 is more than or equal to 0.5 and less than or equal to 1.7; wherein Ln10 is the corresponding grain size when the volume distribution cumulative percentage of the 300 crystal face sub-grain size Ln of the modified solid electrolyte reaches 10%, and Ln50 is the corresponding grain size when the volume distribution cumulative percentage of the 300 crystal face sub-grain size Ln of the modified solid electrolyte reaches 50%; ln90 is the corresponding grain size when the volume distribution cumulative percentage of the 300 crystal face sub-grain size Ln of the modified solid electrolyte reaches 90%. According to the invention, the modified solid electrolyte has excellent ionic conductivity, good air stability, interface stability to metal lithium and relatively high oxidation potential stability.

A method for producing a sulfide solid electrolyte includes: supplying a sulfide solid electrolyte raw material to a tank of a heating furnace; and heating and melting the sulfide solid electrolyte raw material in a gas atmosphere containing a sulfur element. The method includes: obtaining a melt by the heating and melting; and setting a temperature on a bottom side of the melt to be higher than a temperature on a liquid surface side of the melt in the tank.

The invention discloses a long-afterglow luminescent nano material for optical temperature measurement and a preparation method thereof, and relates to the technical field of optical temperature measurement. The chemical formula of the long-afterglow luminescent nano material is Zn3Ga2Ge2O10: x% Cr < 3 + >: y% Sm < 3 + >, wherein x is equal to 0.1-1.2, and y is equal to 0-10 and is not equal to 0. The long-afterglow luminescent nano material is prepared by a citric acid sol-gel method, shows huge potential in the field of optical temperature measurement by virtue of excellent luminescent property, ultra-long afterglow time and high sensitivity, and can meet the temperature measurement requirements in various complex and extreme environments.

Provided is a method for preparing a sulfide-based solid electrolyte. The method for preparing a sulfide-based solid electrolyte may comprise the steps of: preparing a solid electrolyte including sulfide; and providing a precursor and a reactant containing oxygen on the solid electrolyte to form a protective film on the solid electrolyte through a reaction between the precursor and the reactant.

A main object of the present disclosure is to provide a sulfide solid electrolyte with excellent water resistance. The present disclosure achieves the object by providing a sulfide solid electrolyte including a LGPS type crystal phase, and containing Li, Ge, P, and S, wherein: when an X-ray photoelectron spectroscopy measurement is conducted to a surface of the sulfide solid electrolyte, a proportion of Ge2+ with respect to total amount of Ge is 20% or more.

The main objective of this disclosure is to provide a sulfide solid electrolyte with good water resistance. This disclosure addresses the aforementioned problem by providing a sulfide solid electrolyte containing Li, Ge, P, and S, and exhibiting an LGPS-type crystal phase. When X-ray photoelectron spectroscopy is performed on the surface of the aforementioned sulfide solid electrolyte, Ge... 2+ It accounts for more than 20% of the total amount of Ge.

The invention relates to inorganic compounds having a structure of argyrodite type which are derived from a process comprising a step of grinding alkali metal sulfide, alkali metal sulfate, phosphorus pentasulfide and an alkali metal halide. Also described are electrode materials, electrodes, electrolytes comprising said compounds, and the uses thereof in electrochemical cells, in particular in batteries known as all-solid-state batteries. Prolonged grinding of the precursors, followed by little or no annealing, gives compounds of formula M6-xPS5-x-yOyZ1i+x or M6-x2yPS5-x-yOyZi+x in which M is chosen from Li, Na and K, Z is a halogen atom chosen from F, Cl, Br and I, where x denotes the number of Z in excess of 1 or is equal to zero, and y is a number other than zero.

The invention relates to an improved synthesis process of a cesium germanium bromide halogen perovskite material. The improved synthesis process comprises the following reaction steps: (1) constructing a condensation reflux device and a nitrogen pipeline; (2) weighing germanium dioxide, hydrobromic acid, concentrated hypophosphorous acid and absolute ethyl alcohol; (3) putting the three-neck flask into an oil bath pan, and connecting a condensation reflux device and a nitrogen gas path; (4) after germanium dioxide is completely dissolved, the solution in the flask is clarified; (5) injecting the cesium bromide solution into the three-neck flask in a nitrogen environment, heating, and reacting for a period of time; (6) cooling the solution to room temperature in a nitrogen environment, and collecting a yellow cesium germanium bromide crude product; and (8) refining the crude cesium germanium bromide to obtain refined cesium germanium bromide, wherein the impurity content is lower than 0.5%. According to the method, the cesium-germanium bromide solution and methylbenzene are used, so that the problem that divalent germanium ions and cesium bromide are not completely reacted is solved, and a good solution is provided for synthesizing a high-purity cesium-germanium bromide material.

The present invention relates to a sulfide-based solid electrolyte comprising lithium (Li), phosphorus (P), sulfur (S) and a halogen element and having an argyrodite-like crystal structure, wherein at least a part of the crystal structure is doped with one or more first doping elements selected from Group 13 elements and one or more second doping elements selected from Group 14 elements.

The application belongs to the field of novel multi-component photoelectric conversion materials, and particularly relates to a hexagonal Cu3GeS4 quantum dot, a preparation method and application thereof. The crystal form of the Cu3GeS4 quantum dot is hexagonal, and the micro-morphology is nanoscale spherical and / or polyhedral structure. The preparation method comprises the following steps: (1) dissolving germanium dioxide in a mercaptoacetic acid and ammonia water medium for standby; (2) dissolving a copper source in a high-boiling organic solvent and heating to a first temperature for constant temperature reaction for a period of time, then rapidly heating to a second temperature, injecting the germanium solution, and separating the solid product after the reaction is completed, thereby obtaining the product. The Cu3GeS4 quantum dot has high crystallinity, high monodispersity and uniform morphology size. The synthesis method has mild reaction conditions and simple process, realizes controllable preparation of the hexagonal Cu3GeS4 quantum dot with controllable size, uniform morphology, high crystallinity and monodispersity, and the nanomaterial can be potentially applied to the field of photoelectric conversion.

Provided is a process for preparing composite particles for use as an electroactive material for a metal-ion battery, the process comprising the steps of: (a) providing porous particle frameworks comprising micropores and / or mesopores and optionally a polyvalent metal; (b) optionally impregnating the porous particle frameworks with a polyvalent metal; (c) depositing elemental silicon and / or elemental germanium in the pores of the porous particle frameworks; wherein either the porous particle frameworks in step (a) comprise the polyvalent metal, step (b) is performed, or both; thereby providing impregnated porous particle frameworks comprising the polyvalent metal and the silicon and / or germanium; and (d) contacting the impregnated porous particle frameworks with a monovalent metal while applying an electric potential effective to cause the formation of an intermetallic phase which comprises the polyvalent metal, silicon and / or germanium, and the monovalent metal; thereby providing the composite particles.

The present invention relates to a production method for a sulfide solid electrolyte by which a sulfide solid electrolyte starting material is supplied to a vat of a heating furnace, and the sulfide solid electrolyte starting material is melted by heat in an elemental sulfur-containing gas atmosphere, the method comprising attaining a molten liquid through the melting by heat, and raising the temperature towards the bottom of the molten liquid in the vat so as to be higher than the temperature on the liquid surface side of the molten liquid.

What is provided are a proton-conducting solid electrolyte which can exhibit high proton conductivity and stability in a low-temperature range and a medium-temperature range, an electrolyte layer formed of the proton-conducting solid electrolyte, and a battery. As an example, a proton-conducting solid electrolyte represented by a general formula: Ba1-αSc1-xMoxO3-δHy, in which α is −0.2 to 0.2, x is 0.1 to 0.3, y is 0 to 1-3x, and δ is 0 to ½-3x / 2, a proton-conducting solid electrolyte represented by a general formula: BaSc1-xMoxO3-δHy, in which x is 0.15 to 0.25, y is 0 to 1-3x, and δ is 0 to ½-3x / 2, or the like; an electrolyte layer, and a battery are provided.

The application relates to the technical field of lithium ion batteries, and discloses a germanium-doped lithium-rich manganese-based positive electrode material, a preparation method thereof and a battery, steps of which are as follows: a Ni 0.25 Mn 0.75 CO3 precursor is prepared by adopting a carbonated co-precipitation method of a continuous stirring reaction kettle; the above Ni 0.25 Mn 0.75 CO3 precursor is fully ground and uniformly mixed with Li in a lithium source and a germanium source according to a certain proportion; the mixture is placed in a high-temperature calcining furnace to perform calcining under an air atmosphere, and a germanium-doped lithium-rich manganese-based positive electrode material modified by germanium ions is prepared after annealing; the germanium-doped lithium-rich positive electrode material is realized by adopting a one-step sintering method, and nanometer-scale fast-ion conductor lithium germanate coating is realized; germanium ions are introduced in a crystal lattice to induce Ni 2+ oxidation, cation order of the material is improved, the nanometer-scale fast-ion conductor lithium germanate coating can effectively isolate interface side reactions of the electrode material, lithium ion transmission is accelerated, the structural stability of the battery material is improved, and the cycle performance of the battery is improved.

The invention discloses a utilization method of coal-derived dust, belongs to the technical field of solid waste utilization, and aims to solve the problems of environmental pollution and germanium resource waste in coal-derived dust easily caused by solid waste stacking of coal-derived dust in the prior art. The utilization method comprises the following steps: collecting coal derived dust; the coal-derived dust is subjected to a primary fluidization reduction reaction, coal-derived dust subjected to primary fluidization reduction and flue gas subjected to primary fluidization reduction are obtained, and the flue gas subjected to primary fluidization reduction contains germanium monoxide; the coal derived dust subjected to primary fluidization reduction is subjected to a secondary fluidization reduction reaction, tailings obtained after the secondary fluidization reduction reaction and flue gas obtained after the secondary fluidization reduction reaction are obtained, and the flue gas obtained after the secondary fluidization reduction reaction contains germanium monoxide; and collecting the flue gas after the primary fluidization reduction reaction and the flue gas after the secondary fluidization reduction reaction to realize enrichment of germanium in the coal-derived dust and complete utilization of the coal-derived dust. The method can be used for utilizing the coal derived dust.

The present invention relates to a method for producing a sulfide-based solid electrolyte powder, in which: a sulfide-based solid electrolyte raw material is heated and melted in a furnace; and while the obtained melt is discharged from the furnace, the melt is sprayed with a gas to cause the melt to cool, solidify, and undergo powderization.

The invention discloses near ultraviolet light excitable white light fluorescent powder with a high color rendering index and a preparation method of the near ultraviolet light excitable white light fluorescent powder. The invention relates to near ultraviolet light excitable white light fluorescent powder with a high color rendering index, the chemical composition expression formula of the fluorescent powder is Y < 2.94-x > Tb < x > Sm < 0.06 > MgGa2AlGeO12, x is the doping content of Tb, and x is more than or equal to 0.075 and less than or equal to 0.105. The white light fluorescent powder provided by the invention not only has characteristic green light of terbium ions and characteristic red light of samarium ions, but also has additional wide-band blue light which does not belong to rare earth ions as a matrix, so that high-color-rendering-index white light with Ra and R9 both greater than 90 is obtained. The synthesis reaction process of the white light fluorescent powder provided by the invention only needs one-step sintering in a common air atmosphere, the reaction temperature is low, the reaction time is short, and the production is simple, convenient and rapid.

The invention discloses ultra-wide-spectrum garnet-based near-infrared fluorescent powder and a preparation method thereof. The chemical composition expression formula of the ultra-wide-spectrum garnet-based near-infrared light fluorescent powder is Y3Mg < 1-x > CrxGa < 2 + x > AlGe < 1-x > O12, and x is more than or equal to 0.01 and less than or equal to 0.05. The near-infrared light Y < 3 > Mg < 1-x > Cr < x > Ga < 2 + x > Al < Ge < 1-x > O < 12 > fluorescent powder provided by the invention can be excited by ultraviolet light with the wavelength of 260-300 nm, blue light with the wavelength of 400-500 nm and red light with the wavelength of 575-675 nm, and can emit ultra-wide-band near-infrared light with the main peak at 765 nm and the half-peak width not less than 150 nm.

The invention discloses yttrium-magnesium-gallium-aluminum-germanium garnet-based red-light fluorescent powder and a preparation method thereof. The chemical composition expression formula of the yttrium magnesium gallium aluminum germanium garnet-based red light fluorescent powder is Y (3-x) MgGa2AlGeO12: xEu < 3 + >, and x is more than or equal to 0.01 and less than or equal to 0.667. The yttrium magnesium gallium aluminum germanium garnet-based red light fluorescent powder provided by the invention can be excited by 225-300nm ultraviolet light and 375-400nm near ultraviolet light, multimodal narrow-band fluorescence emission covering a 585-600nm orange red light region, a 605-630nm positive red light region and a 690-715nm deep red light region is obtained, and the chromaticity coordinate is positioned at (0.6326, 0.3669). Due to the fact that balanced fluorescence emission of a plurality of narrow-band peaks can be achieved in a 585-600 nm orange red light area, a 605-630 nm positive red light area and a 690-715 nm dark red light area, the fluorescent powder is suitable for being applied to optical light source devices such as healthy lighting, plant lighting and temperature detection.

The present application describes processes for depositing a material comprising elemental germanium, comprising use of a germanium-containing precursor compound in combination with a base-free hydroborane, hydrosilane, hydrostannane, or hydroalane co-reactant.

The present invention relates to a sulfide-based solid electrolyte containing lithium (Li), phosphorus (P), sulfur (S) and a halogen element, having an argyrodite-based crystal structure, at least a portion of which is doped with one or more first doping elements selected from the Group 13 elements and one or more second doping elements selected from the Group 14 elements.

The purpose of the present invention is to provide: needle coke for graphite electrodes for which a huge cost is not required at the time of manufacturing, in which puffing of the needle coke is suppressed, and which improves manufacturing yield and properties of graphite electrodes; a manufacturing method thereof; and an inhibitor. This inhibitor for graphite electrode production is volatile at a temperature of 2100-6000°C and comprises: a metal comprising at least one element (Mβ) selected from the group consisting of Group 4 elements, Group 8 elements, Group 9 elements, Group 10 elements, Group 13 elements, Group 14 elements, and Group 15 elements of the long form of periodic table, and / or one oxide including the element (Mβ); or a metal comprising the element (Mβ) and / or a compound including the element (Mβ).

This invention relates to a novel crystalline solid electrolyte for lithium secondary batteries and a method for producing the same. [Solution] A solid electrolyte for lithium secondary batteries containing lithium (Li), germanium (Ge), and sulfur (S), having a monoclinic crystal structure, wherein the solid electrolyte has excellent lithium ion conductivity and is chemically stable.

The object of the present invention is to provide a needle coke for a graphite electrode, which suppresses puffing of the needle coke and improves the production yield and performances of graphite electrodes without incurring a large cost in the production of a needle coke, and also provide a production method and an inhibitor therefor. An inhibitor for graphite electrode production, including at least one of a metal consisting of an element (Mβ) and an oxide comprising the element (Mβ), wherein the element (Mβ) is at least one element selected from the group consisting of group 4 elements, group 8 elements, group 9 elements, group 10 elements, group 13 elements, group 14 elements and group 15 elements of the long-form periodic table, or including at least one of the metal consisting of an element (Mβ) and a compound including the element (Mβ), wherein the inhibitor volatilizes at a temperature of 2100 to 6000 °C.

The present invention discloses a long-lasting luminescent material capable of emitting ultraviolet light and a preparation method thereof, belonging to the technical field of long-lasting luminescent materials. The long-lasting luminescent material capable of emitting ultraviolet light has the general formula shown in formula (I): Na2M 1‑x Ge2O6:xBi 3+ Formula (I); wherein M is selected from one or more of Ca, Sr, and Ba, and 0.0001≤x≤0.1. The long-afterglow luminescent material capable of emitting ultraviolet light uses Na2MGe2O6 as a matrix and trivalent Bi ions as luminescent centers, enabling the material to be effectively excited by ultraviolet light, particularly 254nm ultraviolet light, and exhibiting a bright afterglow with a long afterglow duration, which can last up to 24 hours. Furthermore, the preparation process of the long-afterglow material is simple, the raw material cost is low, and the product has stable chemical properties, is fluffy, easy to grind, non-radioactive, and has minimal environmental pollution.

The invention discloses a solid electrolyte film with high silver ion conductivity at room temperature and a preparation method thereof, the solid electrolyte film comprises the following chemical general formula: (100-x-y) GeS < 2-x > Sb < 2 > S < 3-y > AgI, x is equal to 30-73, y is equal to 28-67, and the grain gap is within 50nm. According to the preparation method, flexible regulation and control of sputtering process parameters are achieved through the double-target co-sputtering technology, so that the film keeps high silver iodide content, meanwhile, the size of grain gaps is controlled, high-speed transmission of silver ions in the film is guaranteed, the room-temperature silver ion conductivity of 5 * 10 <-4 > S / cm or above is obtained, product components are limited loosely, and the preparation method is suitable for large-scale production. And the technology universality is high.

To provide a blue-green inorganic pigment having low toxicity and excellent color development and stability.SOLUTION: The inorganic pigment of the present invention is represented by the following formula (1): Na2(1-x)A12xCu3(1-y)A23yGe4(1-z)A34zO12 (1) (In formula (1), A1 is at least one selected from the group consisting of Li and K, A2 is at least one selected from the group consisting of Ni, Zn, Mg, Mn, and Fe, A3 is at least one selected from the group consisting of Ni, Mn, Fe, Sn, Si, P, Al, and Ga, and the conditions 0.00≤x≤0.30, 0.00≤y≤0.30, and 0.00≤z≤0.30 are satisfied.)SELECTED DRAWING: None