211 results about "Manganese doping" patented technology

The invention relates to a preparation method and application of a manganese ion doped modified ferric sodium pyrophosphate positive electrode material, and belongs to the technical field of sodium ion battery positive electrodes. The preparation method comprises the following steps: adding a sodium source, a phosphorus source and a carbon source into ethanol, uniformly mixing to form a mixed solution, sequentially adding an iron source and a manganese source into the mixed solution, uniformly mixing to form slurry, and drying the slurry to obtain precursor powder; calcining in a protective atmosphere to obtain a manganese-doped carbon-coated ferric pyrophosphate sodium material; the calcining conditions are as follows: heating to the temperature of 300-350 DEG C at the heating rate of 2-3 DEG C / min, carrying out first-stage constant-temperature calcination for 2-3 hours, heating to the temperature of 500-550 DEG C at the heating rate of 5-8 DEG C / min, and carrying out second-stage constant-temperature calcination for 10-12 hours. By doping the manganese ions, the electronic conductivity and the ion diffusivity of the ferric sodium phosphate pyrophosphate composite material are improved, so that the discharge capacity of the ferric sodium phosphate pyrophosphate composite material at high rate is improved, and the battery has relatively high cycle stability.

Manganese-doped hollow mesoporous silica nanoparticles loaded with curcumin and an application in periodontal bone tissue repair are provided in the present disclosure, belonging to the technical field of targeted delivery of nanoparticles and bone tissue regeneration. In the present disclosure, alendronate is grafted on the surface of silica nanoparticles to achieve bone targeting, manganese is doped on the nanoparticles by a chemical method, and curcumin is wrapped in the nanoparticles.

The invention discloses a method for preparing a fluorescent material based on a waste NCM ternary lithium battery and application of the fluorescent material, and the preparation method of the fluorescent material comprises the following steps: disassembling the waste NCM ternary lithium battery to obtain a nickel cobalt lithium manganate waste material and preparing the nickel cobalt lithium manganate waste material into powder; impurities and part of ions in the nickel cobalt lithium manganate waste powder are removed, and manganese-containing powder is prepared; and mixing manganese-containing powder, a first perovskite fluorescent raw material, a ligand, a protective material and a solvent, heating and stirring under a vacuum condition, heating under a nitrogen atmosphere, adding a second perovskite fluorescent raw material solution into the system for reaction, and cooling after the reaction is finished to obtain the manganese-doped perovskite fluorescent material. According to the method, the efficient recycling of the waste NCM ternary lithium battery is realized, the preparation cost of the fluorescent material is reduced, the resource recycling rate is improved, the environmental pollution is reduced, and the manganese-doped perovskite fluorescent material is simple to operate when chloride ions are detected after being loaded on the carrier and can be used for field detection.

The invention discloses a power-on viscosity-reducing adhesive tape and a preparation method and application thereof, and belongs to the technical field of processing of UV adhesive tapes for batteries, the preparation method comprises the following steps: mixing and stirring an acrylate pressure-sensitive adhesive, a UV prepolymer, composite conductive hydrogel, a curing agent, a photoinitiator, a solvent and a leveling agent to obtain conductive glue; and coating the conductive glue on the upper and lower surfaces of the aluminum foil substrate, drying at 80-100 DEG C for 5-6 minutes to obtain a conductive adhesive layer, and adhering release films on the upper and lower surfaces of the conductive adhesive layer to obtain the electrified viscosity-reducing adhesive tape. The synthesized porous carbon has high porosity, and promotes the manganese-doped nano zinc sulfide to emit light to initiate polymerization, crosslinking and curing of the conductive adhesive layer, so that the conductive adhesive layer loses viscosity; nano-silver particles are formed on the surface of the zinc oxide whisker loaded with the porous carbon, so that the pore structure of the porous carbon is refined, and the heat dissipation performance of the electrified viscosity-reducing adhesive tape is improved.

The invention discloses a Prussian blue analogue electrode and a preparation method and application thereof.The preparation method comprises the following steps that a manganese salt solution, a nickel salt solution and a potassium ferricyanide solution are prepared and added into water at the same time, a mixture with the molar ratio of manganese to nickel being larger than or equal to 0.1: 1 is obtained, aging, washing and drying are conducted, and the Prussian blue analogue electrode is obtained. And mixing the manganese-doped Prussian blue analogue with a binder, a conductive agent and a solvent, carrying out ultrasonic treatment to obtain an electrode slurry liquid, covering the surface of a current collector with the electrode slurry liquid, and drying to obtain the Prussian blue analogue electrode. The Prussian blue analogue electrode prepared by the method has the advantages of low energy consumption, high salt adsorption capacity, high salt adsorption rate and the like, can be used for desalting treatment as a capacitive deionization cathode, has the salt adsorption rate and the salt adsorption capacity which are more than two times of those of a conventional electrode, and is high in use value, good in application prospect and wide in application prospect. The method is of great significance in promoting wide application of the capacitive deionization technology.

The invention relates to the field of ceramic materials, provides a high-voltage-resistant PTC (Positive Temperature Coefficient) thermal sensitive ceramic material as well as a preparation method and application thereof, and aims to improve the voltage resistance and PTC effect stability of thermal sensitive ceramic. The material is composed of aluminum oxide-coated manganese-doped barium titanate nanorods, hollow-core silicon dioxide microspheres and a glass phase sintering aid, and the electric heating performance and the microstructure stability are optimized by constructing a core-shell structure and a three-dimensional composite system. A hydrothermal method and a sol-gel method are adopted to precisely control a raw material structure, and alcohol dispersion, tape casting and weak oxidizing atmosphere sintering are combined, so that the compactness and consistency of the ceramic are ensured. The material is suitable for high-voltage temperature control elements and over-current protection devices, and is widely applied to the fields of new energy automobile battery pack over-temperature protection, high-voltage power equipment current limiting elements, industrial automatic temperature control switches and the like.

Disclosed herein are manganese doped metal organic frameworks and methods of making and use thereof. For example, disclosed herein is a manganese doped metal organic framework (Mn-MOF) comprising a metal organic framework (MOF) comprising a zeolitic imidazolate framework (ZIF) comprising metal ions connected by imidazolate linkers, wherein the metal ions comprise Mn and Zn. In some examples, the Mn-MOF comprises from greater than 0% to 50% (mol%) Mn based on the total amount of metal ions. Also disclosed herein are methods of making and methods of use of the Mn-MOFs.

The invention discloses a preparation method of manganous ferric phosphate, and belongs to the technical field of battery positive electrode material manufacturing. Manganese element doping is mainly carried out in the aging stage, an oxidizing agent is not used, and the crystallization property and the iron-phosphorus ratio of the material are improved through secondary calcination. According to the invention, divalent manganese ions can be prevented from being oxidized into trivalent manganese ions when the divalent iron ions are oxidized in the synthesis stage, disproportionation and co-ion effect of the trivalent manganese ions are avoided, so that the divalent manganese ions stably exist in the product, the low-temperature discharge performance of the battery is improved, and meanwhile, the preparation cost is reduced.

The present invention discloses a method for preparing lithium iron manganese phosphate positive electrode material based on ferrous sulfate produced as a byproduct of titanium dioxide. The present invention adjusts the pH range so that the ferrous sulfate produced as a byproduct of titanium dioxide removes impurities such as titanium and aluminum during the thermal dissolution process while retaining manganese impurities, thereby reducing the amount of manganese supplementation and reducing the cost; and then obtains anhydrous ferric phosphate doped with manganese through a two-step coprecipitation method and aerobic calcination, thereby further preparing a lithium iron manganese phosphate positive electrode material with high stability and good electrochemical properties. The method is simple to operate, has a short process, is widely used, and has high economic benefits. It is of great significance for solving the problem of recycling waste byproduct ferrous sulfate produced in the current titanium dioxide production, and can achieve the sustainable development of titanium dioxide production enterprises.

The invention provides a preparation method of a carbon-coated manganese-titanium-doped sodium vanadium phosphate positive electrode material, which comprises the following steps: sequentially adding raw materials of a carbon source, a vanadium source, a phosphorus source, a sodium source, a manganese source and a titanium source into deionized water according to a molar ratio, stirring until the solution becomes clear, and carrying out high-temperature calcination through a sol-gel method and a tubular furnace to prepare a Na (4-x) MnV1-XTix (PO4) 3 / C positive electrode material. The target material is of a sea rock similar structure, the surface of the target material is provided with multiple holes, and due to the morphology, the specific surface area of the material is larger, multiple active sites are provided, and the reaction rate is increased. And the surface is coated with carbon, so that the conductivity of the material is greatly improved. Through a double-doping strategy of partially replacing transition metal vanadium sites with titanium and manganese doping, the prepared electrode material has relatively good cycle stability.

The invention discloses a preparation method of a manganese-doped iron-based sulfide / nitrogen-doped reduced graphene oxide composite electrode material for a sodium-ion battery, a simple solvothermal method is combined with annealing treatment, and iron atoms in a hexagonal system are replaced by part of manganese atoms in a hydrothermal process to form multivalent iron-based sulfide, so that the composite electrode material is prepared. The manganese-doped iron-based sulfide / nitrogen-doped reduced graphene oxide composite electrode material for the sodium-ion battery is successfully prepared by uniformly compounding the manganese-doped iron-based sulfide and the nitrogen-doped reduced graphene oxide, and the manganese-doped iron-based sulfide / nitrogen-doped reduced graphene oxide composite electrode material can effectively regulate and control the electronic state density, reduce the sodium ion migration energy barrier and promote the electron / ion transmission; meanwhile, continuous growth of iron-based sulfide particles is limited, so that the iron-based sulfide particles are uniformly dispersed on the surface of the graphene, more active sites are exposed, the electrochemical reaction activity is improved, and the structural stability is enhanced. The composite electrode material disclosed by the invention can be widely applied to a negative plate for a sodium-ion battery, and has excellent adaptability and application prospect in a wide temperature range and under a high-current working condition.

The invention provides a lithium manganese iron phosphate material and a preparation method and application thereof, and belongs to the technical field of lithium batteries, the lithium manganese iron phosphate material comprises a gradient manganese-doped core, a magnesium-doped layer, a carbon coating layer and an Al2O3 coating layer; the gradient manganese-doped inner core sequentially comprises a manganese-containing core layer, a manganese-containing transition layer and a manganese-containing shell from inside to outside, and the manganese ion concentration of the manganese-containing core layer is from high to low. According to the lithium manganese iron phosphate material disclosed by the invention, the gradient manganese-doped core is designed, so that the concentration gradient distribution of manganese ions is realized, and the electrochemical performance of the material is optimized. Meanwhile, due to the introduction of the magnesium doping layer, the cycling stability and the thermal stability of the material are further improved, and the manganese ion dissolution phenomenon in a high-temperature environment is reduced; in addition, the use of the carbon coating layer significantly improves the conductivity of the material and improves the charge and discharge performance of the material, and the Al2O3 coating layer can improve the structural stability of the material and reduce the dissolution of manganese ions, and also can improve the cycling stability and thermal stability of the material.

The invention discloses a manganese-doped Ir-Ta oxide composite coating titanium anode and a preparation method thereof. The titanium anode comprises an insoluble titanium base material, an oxide middle layer and an oxide catalyst layer which are sequentially arranged, wherein the oxide catalyst layer is composed of an iridium (Ir) oxide, a tantalum (Ta) oxide and a doped manganese (Mn) element. The preparation method comprises the following steps: carrying out sand blasting and surface treatment on a titanium substrate to increase the roughness and binding force of the surface, then carrying out proper intermediate layer coating on the surface of the substrate, and finally preparing the manganese-doped Ir-Ta oxide composite coating on the surface of the intermediate layer. Compared with a traditional titanium anode, the prepared manganese-doped Ir-Ta oxide composite coating titanium anode has the advantages of being higher in reaction specific surface area, lower in oxygen evolution potential, longer in catalytic life and the like, and meanwhile the transition metal element manganese is higher in reserve, lower in price and high in oxygen evolution activity.

A manganese-doped ruthenium dioxide nanofiber material, a preparation method thereof, and an application thereof in alkaline electrocatalytic hydrogen evolution and oxygen evolution at industrial-level current intensity belong to the technical field of controllable preparation of doped metal oxide nanomaterials. In the present invention, a manganese-doped ruthenium dioxide nanofiber material is prepared by two steps of electrospinning technology and calcination in an air atmosphere. The material exists in a uniform fiber morphology as a whole, and the surface is rough. This method is simple and efficient and can be applied to large-scale industrialization. The manganese-doped ruthenium dioxide nanofiber material prepared in the present invention, as a bifunctional electrocatalyst for electrocatalytic water splitting, exhibits excellent hydrogen evolution and oxygen evolution catalytic activities and stability at industrial-level current density, realizes the efficient and stable preparation of clean and green hydrogen energy, solves the disadvantages of low catalyst activity and poor stability in current industry, and provides an efficient solution to the increasingly serious environmental problems, having high practical application and economic value.

The invention provides a manganese-doped ferrocobalt oxide nano particle-coated carbon-nitrogen cubic composite material as well as a preparation method and application of the manganese-doped ferrocobalt oxide nano particle-coated carbon-nitrogen cubic composite material. The preparation method comprises the following steps: firstly doping ferrous sulfate and manganese chloride into ZIF-8, then mixing the ZIF-8 with cobalt nitrate and 2-methylimidazole in methanol, carrying out centrifugal separation to obtain a product, and finally carrying out one-step calcination to realize carbonitriding of the composite material, doping of manganese and generation of nano particles from ferrocobalt oxide. And finally, the manganese-doped ferrocobalt oxide nanoparticle-coated carbon-nitrogen cubic composite material is obtained. Compared with the traditional preparation method, the method disclosed by the invention is simple, mild in reaction condition and high in yield, and the prepared composite material is uniform in morphology and has excellent electro-catalytic performance on the water electrolysis oxygen evolution reaction.

The invention discloses a hydrophobic modified manganese-doped copper-based catalyst for preparing methanol through CO2 thermal reduction hydrogenation as well as a preparation method and application of the hydrophobic modified manganese-doped copper-based catalyst, and belongs to the technical field of catalysts. The preparation method of the catalyst comprises the following steps: mixing a metal salt mixed solution of a copper salt, a zinc salt, an aluminum salt and a manganese salt with an alkaline solution of a sodium salt, and controlling the pH value; heating, aging, standing and layering; washing the precipitate, drying and roasting to obtain a manganese-doped copper-based catalyst to be hydrophobically modified; the preparation method comprises the following steps: carrying out a hydrothermal reaction on divinyl benzene and a DMF solution of epoxy resin, washing and drying a white solid obtained by the reaction to obtain a hydrophobic material nano-porous polydivinyl benzene; the preparation method comprises the following steps: mixing a hydrophobic material and a manganese-doped copper-based catalyst to be hydrophobically modified, grinding, tabletting and forming to obtain the hydrophobically modified manganese-doped copper-based catalyst. The CO2 adsorption capacity of the catalyst is improved, the monatomic dispersion degree of the catalyst is promoted, and large-scale low-steric-hindrance hydrophobic modification of an active phase is realized.

The present invention discloses a self-supporting oxygen evolution electrode and its preparation method and application, which belongs to the field of alkaline water electrolysis hydrogen production; the electrode is obtained by combining a hydrothermal method and an electrodeposition method; the electrode grows manganese-doped basic cobalt carbonate nanowires vertically on the surface of nickel foam, and the nanowires are surrounded by multiple layered nickel-iron double metal hydroxide nanosheets to form a nanorod as a whole. The nanorods are uniform in size, 2 to 3 μm long, and 100 to 500 nm in diameter, growing vertically on the surface of nickel foam; the electrode has high catalytic activity and stability. After using nickel foam as a conductive substrate, it can still operate stably for a long time under a high electrolysis current and in a strong alkaline medium; the electrode is used to catalyze the oxygen evolution reaction of water electrolysis to produce hydrogen under alkaline conditions; the present invention can be applied to renewable fuel cells, photoelectrocatalysis, alkaline anion exchange membrane water electrolysis (AEMWE) and electrolysis hydrogen generator devices.

The invention discloses a preparation method of a scaly manganese-doped phosphorus / molybdenum sulfide nanosheet array electrolyzed water catalyst and a product thereof, foamed nickel and the like are used as carriers, transition metal phosphide / sulfide grows on the basis of molybdenum oxide with poor intrinsic activity through hydrothermal synthesis and heat treatment methods based on transition metal molybdenum, and the scaly manganese-doped phosphorus / molybdenum sulfide nanosheet array electrolyzed water catalyst is prepared. The flaky manganese-doped phosphorus / molybdenum sulfide nanosheet array electrolyzed water catalyst is obtained, the overpotential of electrolyzed water of the catalyst is fully reduced by utilizing the synergistic effect of the manganese-doped phosphorus / molybdenum sulfide nanosheet array electrolyzed water catalyst, the stability is relatively high, and meanwhile, the problems of high preparation cost and complicated preparation process of transition metal molybdenum-based binary oxide in the prior art are effectively solved; and the positive effect is achieved on water electrolysis hydrogen production commercialization.

The invention relates to a cobalt-free ultra-high nickel positive electrode material and a preparation method and application thereof, the preparation method comprises the following steps: ball-milling and mixing a nickel source, a lithium source and a dopant to obtain powder, and drying and sintering the obtained powder to obtain the cobalt-free ultra-high nickel positive electrode material, the doping agent comprises an aluminum-containing doping agent and a manganese-containing doping agent; the nickel source, the lithium source and the doping agent are mixed according to the molar ratio of the nickel element to the lithium element to the total doping element being (0.90-0.98): (1.03-1.06): (0.02-0.10). The Al and Mn elements are uniformly doped in the positive electrode material substrate through a solid-phase reaction method, the material performance is synergistically improved by utilizing the unique action mechanism of the doped elements, the electrochemical performance is synergistically improved on the premise of not depending on the cobalt element, and high initial discharge capacity, cycling stability and rate capability are kept in a wide voltage interval; and excellent capacity retention capability is shown in a wide multiplying power range.

The invention provides a preparation method of manganese-doped iron phosphate, and relates to the technical field of lithium ion battery positive electrode materials, the preparation method comprises the following steps: S1, preparing a phosphoric acid solution, a ferrite solution, a phosphorus-oxygen mixed solution containing a phosphorus source and an oxidizing agent, a divalent manganese salt solution and an oxidizing agent solution; s2, adding a base solution, and pumping the ferrite solution and the phosphorus-oxygen mixed solution while stirring to obtain slurry A; s3, filtering and washing the slurry A to obtain a filter cake; s4, mixing and pulping the filter cake and water, sequentially adding a divalent manganese salt solution, an oxidant solution and phosphoric acid, heating to 80-100 DEG C, and carrying out conversion reaction for 1-3 hours to obtain slurry B; s5, filtering, washing and drying the slurry B to obtain manganese-doped iron phosphate dihydrate, and calcining the iron phosphate dihydrate to obtain manganese-doped anhydrous iron phosphate; the manganese salt solution is added in the precursor preparation stage, so that the manganese element is doped into iron phosphate crystal lattices in the form of ions, and the bulk phase doping effect can be better improved.

The invention relates to the technical field of positive electrodes of hydrogen fuel cells, in particular to a method for preparing a positive electrode of a hydrogen fuel cell by using a waste manganese-based sodium-ion battery, which comprises the following steps: placing the waste manganese-based sodium-ion battery in a NaCl solution for discharging to obtain an electroless manganese-based sodium-ion battery; the method comprises the following steps of: crushing the waste carbon into manganese-based sodium-ion battery slag, blowing the slag to obtain manganese-based sodium-ion battery slag without a diaphragm and a plastic skin, soaking the manganese-based sodium-ion battery slag into an organic solvent, completely separating the waste carbon of the negative electrode from a current collector under the assistance of ultrasonic waves to obtain a clear solution, and preparing graphene oxide from the waste carbon of the negative electrode by utilizing a Hummers method; adjusting the pH value of the clarified solution, filtering to obtain sodium carbonate filter residues and manganese ion-containing filtrate, mixing graphene oxide and the filtrate, stirring, heating and drying to obtain the manganese-doped graphene catalyst, and applying the manganese-doped graphene catalyst to the positive electrode of the hydrogen fuel cell. The method can realize controllable full recovery of positive and negative electrode waste materials; selected materials are cheap and easy to control; and the prepared manganese-doped graphene catalyst has a good application effect.

This invention discloses a method for preparing 1,3-propanediol by hydrogenation of methyl 3-hydroxypropionate. Using manganese-doped layered copper silicate prepared by deposition precipitation as a precursor, a highly dispersed and stable copper-based catalyst is obtained through reduction. The manganese doping and layered copper silicate species enhance the interaction between copper and the support, improving the dispersion of active copper species. Simultaneously, the layered copper silicate increases the difficulty of copper species reduction, thereby improving the Cu content of the catalyst. + / Cu 0 The strong metal-support interaction and the dispersing effect of manganese can effectively inhibit the migration and aggregation of active copper species during the reaction, thus improving the stability of the catalyst. The copper-based catalyst prepared in this invention exhibits high conversion and 1,3-propanediol selectivity in the hydrogenation reaction of methyl 3-hydroxypropionate, with high catalytic activity and stability, and few byproducts, showing good prospects for industrial application.

The invention discloses an underground heater insulating material capable of improving the insulating property through manganese doping and a preparation method thereof. The insulating material is an insulating ceramic material prepared from a mixed material containing magnesium oxide, a doping material containing a manganese element and a modifying reagent through ball milling, drying granulation, aging forming and plastic removal sintering. The doping material containing the manganese element and magnesium oxide can form a solid solution, so that crystal lattices of magnesium oxide crystals are activated, the compact degree and strength of the material are improved, and the insulating property is improved; the modification reagent reduces the vacancy defect of MgO crystal grains, moisture absorption is not easy to form an MgO-OH structure, and the volume resistivity is improved; compared with a high-purity magnesium oxide ceramic material, the prepared insulating ceramic material has good high-temperature insulating property and can be used as an insulating material for an underground high-power heater.

The invention discloses a strontium chloride-assisted method for improving the fluorescence quantum yield of manganese-doped CsPbCl3 quantum dots, which comprises the following steps: adding cesium carbonate into octadecene, heating and stirring until uniform mixing, and injecting oleic acid to obtain a cesium oleate solution; the preparation method comprises the following steps: adding different amounts of strontium chloride auxiliary dopant, manganese chloride dopant, lead chloride, oleylamine and oleic acid into octadecene, heating and stirring to uniformly mix to obtain a precursor mixed solution; injecting the cesium oleate solution into the precursor mixed solution, reacting for a certain period of time, and cooling in ice water to room temperature to form a CsPbCl3 quantum dot stock solution; a certain proportion of a flocculating agent is added into the stock solution, and a CsPbCl3 quantum dot solution is obtained through centrifugal treatment. According to the preparation method disclosed by the invention, the quantum yield of Mn-emitted fluorescence of the Mn-doped CsPbCl3 quantum dot is improved by regulating and controlling the addition amount of the doping agent, and finally, the quantum yield of Mn-emitted fluorescence of the Sr and Mn co-doped CsPbCl3 quantum dot reaches up to 100%.

The invention discloses a preparation method of a manganese-doped CsPbBr3 single crystal, and belongs to the field of inorganic perovskite preparation. The preparation method specifically comprises the following steps: dissolving cesium bromide, lead bromide and manganese bromide in a DMSO (dimethyl sulfoxide) solvent, adding bromohexanoic acid, and fully mixing in a water bath to obtain a mixed solution I; then methanol, cyclohexanol and DMF (N, N-dimethylformamide) are fully mixed, and a mixed solution II is obtained; mixing the mixed solution I and the mixed solution II, fully stirring in a water bath, and filtering by using a filter to obtain a precursor solution; and putting a seed crystal into the precursor solution, putting the precursor and the container into silicone oil, and obtaining the manganese-doped CsPbBr3 single crystal by adopting an inverse temperature crystallization method. The manganese-doped CsPbBr3 single crystal prepared by the invention has excellent photoelectric properties and stability, and can be used for low-temperature semiconductor radiation detectors.

The invention provides a photoelectrochemical photoanode based on sensitization of environment-friendly manganese-doped copper-indium-gallium-sulfur quantum dots and a preparation method and photoelectrochemical application of the photoelectrochemical photoanode. The photoelectrochemical photoanode is a quantum dot sensitized titanium dioxide film photoelectrode, and the preparation method of the photoelectrochemical photoanode comprises the following steps: (1) preparing a transparent titanium dioxide barrier layer on conductive glass through a spin coating method, coating a titanium dioxide mesoporous layer through a blade coating method after the transparent titanium dioxide barrier layer is dried, and performing high-temperature calcination to obtain a mesoporous titanium dioxide film photoelectrode; (2) synthesizing a high-quality copper-indium-gallium-sulfur quantum dot by adopting a co-heating method, and doping a manganese element in a high-temperature nucleation stage to obtain a manganese-doped copper-indium-gallium-sulfur quantum dot with high charge separation / transfer efficiency; and (3) soaking the mesoporous titanium dioxide film photoelectrode in a quantum dot / toluene solution, depositing a quantum dot solution by using an electrophoretic deposition method, drying the quantum dot solution, and carrying out ZnS passivation treatment on the surface of the quantum dot solution to obtain the quantum dot sensitized titanium dioxide film photoelectrochemical cell photoanode. According to the invention, an electrode is packaged, and the quantum dot sensitized titanium dioxide film photoelectrode is used as an anode and is assembled with a Pt counter electrode and an Ag / AgCl reference electrode to form the quantum dot photoelectrochemical cell. According to the invention, the environment-friendly quantum dot photoelectrochemical cell without heavy metal components is realized, the photo-generated charge separation / transfer transportation efficiency of the quantum dots is improved through element doping, and high-performance environment-friendly quantum dot photoelectrochemical solar conversion application is further realized.

A manganese-doped mesoporous silica nanomaterial, and a preparation method therefor and the use thereof. The nanomaterial comprises a manganese-doped mesoporous silica nanosphere, an anti-angiogenic drug and a surface delivery system. The anti-angiogenic drug is adsorbed in the pores of the manganese-doped mesoporous silica nanosphere, and the surface delivery system is coated on the surface of the manganese-doped mesoporous silica nanosphere, wherein metal manganese ions are doped on the surface and in the framework of the mesoporous silica nanosphere. The anti-angiogenic drug is an HIF-2α inhibitor. After targeted degradation at a tumor site, the nanomaterial releases the manganese ions and the anti-angiogenic drug to realize the dual anti-tumor effects of activating local anti-tumor immunity and inhibiting angiogenesis within the tumor at a targeted tumor site; and the manganese ions and the anti-angiogenic drug have a synergistic effect. In addition, the nanomaterial has no potential toxic effect, has good biosafety, and provides a new choice for the treatment of tumors, especially pVHL-deleted tumors.

The invention discloses a preparation method of a manganese-doped iron selenium tellurium superconducting material, and the preparation method comprises the following steps: mixing iron powder, selenium powder and tellurium powder to obtain first mixed powder; grinding the first mixed powder to obtain ground first mixed powder; performing pressing treatment on the ground first mixed powder to obtain a pressed block; carrying out first sintering on the briquette, then carrying out multi-stage sintering, and then cooling to obtain an iron selenium tellurium superconducting block; grinding the iron-selenium-tellurium superconducting block into iron-selenium-tellurium superconducting powder, and mixing the iron-selenium-tellurium superconducting powder with manganese powder to obtain second mixed powder; and repeating the operation on the second mixed powder to obtain the manganese-doped iron selenium tellurium superconducting material. According to the superconducting material, the manganese element is added in the sintering process, catalytic phase formation is promoted, loss of selenium and tellurium elements is prevented, and the texture orientation and superconducting performance of the superconducting material are improved.

The invention provides a light generating system (1000) configured to provide system light (1001), wherein the light generating system (1000) comprises a first light generating device (110), a second light generating device (120), a third light generating device (130), and a luminescent element (200); wherein: (A) the first light generating device (110) comprises a first solid state light source (10), and wherein the first light generating device (110) is configured to generate first device light (111) having a first centroid wavelength (λc1), wherein the first centroid wavelength (λc1) is selected from the range of 440-460 nm; (B) the second light generating device (120) comprises a second solid state light source (20), and wherein the second light generating device (120) is configured to generate second device light (121) having a second centroid wavelength (λc2), wherein the second centroid wavelength (λc2) is selected from the range of 485-505 nm; (C) the third light generating device (130) comprises a third solid state light source (30), and wherein the third light generating device (130) is configured to generate third device light (131) having a third centroid wavelength (λc3), wherein the third centroid wavelength (λc3) is selected from the range of 520-570 nm; (D) the luminescent element (200) comprises a first luminescent material (210) configured to convert at least part of the first device light (111) received by the first luminescent material (210) into first luminescent material light (211); wherein the first luminescent material (210) comprises a luminescent material of the type M'xM2-2xAX6 doped with tetravalent manganese, wherein M' comprises an alkaline earth cation, wherein M comprises an alkaline cation, and x is in the range of 0-1, wherein A comprises a tetravalent cation, wherein X comprises a monovalent anion, at least comprising fluorine; and (E) the light generating system (1000) is configured such that (a) the luminescent element (200) is configured in the transmissive mode, wherein less than 5% of the first device light (111) is transmitted through the luminescent element (200), (b) the second device light (121) and the third device light (131) are transmitted by the luminescent element (200); and (c) in an operational mode the system light (1001) is white light having a correlated color temperature selected from the range of 1500-6500 K and a color rendering index of at least 80.

This invention relates to the field of lithium battery technology, and discloses a manganese-doped lithium iron phosphate material, its preparation method, a positive electrode, a lithium-ion battery, and electrical devices thereof. The chemical formula of the manganese-doped lithium iron phosphate material is LiMn. x Fe 1‑x PO4, where 0