88 results about "Ti doping" patented technology

The invention discloses a lithium ion battery and a multi-element positive material thereof as well as a preparation method for the multi-element positive material. The chemical general formula of the multi-element positive material is LixNiaCobMncNyO2, wherein N is one of Ti, Mg and Al; x is more than or equal to 1.0 and less than or equal to 1.15; a is more than 0 and less than 1; b is more than 0 and less than 1; c is more than 0 and less than 1; y is more than or equal to 0.003 and less than or equal to 0.07; the sum of a, b, c and y is equal to 1. The multi-element positive material with a layered structure comprises a kernel pure phase layer containing lithium cobalt nickel manganese oxide, a surface doped layer containing a doped element Ti, an oxide surface cladding layer containing a cladding element Al and a shallow surface doped transitional layer which is positioned between the surface doped layer and the surface cladding layer and contains a doped element Mg. The preparation method of the multi-element positive material comprises the steps of synthesizing a multi-element precursor of which a body phase contains nickel, cobalt and manganese, then performing Ti doping and lithium treatment on the surface of a precursor liquid phase, and finally, doping Mg on the surface by a pyrogenic process and performing Al2O3 cladding treatment to obtain the composite modified multi-element lithium ion positive material.

The present invention relates to reflective masks and their use for reflecting extreme ultraviolet soft x-ray photons to enable the use of extreme ultraviolet soft x-ray radiation projection lithographic methods and systems for producing integrated circuits and forming patterns with extremely small feature dimensions. The projection lithographic method includes providing an illumination sub-system for producing and directing an extreme ultraviolet soft x-ray radiation lambd from an extreme ultraviolet soft x-ray source; providing a mask sub-system illuminated by the extreme ultraviolet soft x-ray radiation lambd produced by the illumination sub-system and providing the mask sub-system includes providing a patterned reflective mask for forming a projected mask pattern when illuminated by radiation lambd. Providing the patterned reflective mask includes providing a Ti doped high purity SiO2 glass wafer with a patterned absorbing overlay overlaying the reflective multilayer coated Ti doped high purity SiO2 glass defect free wafer surface that has an Ra roughness<=0.15 nm. The method includes providing a projection sub-system and a print media subject wafer which has a radiation sensitive wafer surface wherein the projection sub-system projects the projected mask pattern from the patterned reflective mask onto the radiation sensitive wafer surface.

The invention discloses a titanium-doped alpha-iron oxide photo-anode, and a preparation method and an application thereof. The method comprises the steps: coating the surface of a beta-FeOOH membrane with a titanium source solution, forming a TiO2 layer during high temperature annealing, and inhibiting grain coarsening of alpha-iron oxide; at the same time, in the process, diffusing titanium ions to the interior of alpha-iron oxide crystal lattices to realize titanium doping; and after annealing, using a hydrogen peroxide aqueous solution to remove the TiO2 layer, and thus obtaining the titanium-doped alpha-iron oxide photo-anode. The photo-anode has small particle size which is 30 nm-40 nm; the maximum photocurrent density can reach 3.62 mA/cm<2> under a 300 W xenon lamp light source and at the bias of 1.23 V[RHE]; compared with a un-doped alpha-iron oxide photo-anode without introduction of the TiO2 layer, the photocurrent is increased by 5 times, and a positive shift phenomenon of initial potential is not generated.

The invention relates to a high-nickel material coated with Li2TiO3 on the surface and doped with Ti on the surface layer and a preparation method and belongs to the field of chemical energy storage batteries. The material is prepared from, in percentage by total mass, 0.1%-10% of Ti in the surface coating layer Li2TiO3, 0.1%-10% of Ti doped on the surface layer and the balance of a high-nickel material, the thickness of the surface coating Li2TiO3 is 0.01-5 nm, and the surface layer refers to the layer from the surface of the high-nickel material to the depth smaller than or equal to 1 mu m. According to the method, NI-Co hydroxide is prepared with a hydroxide coprecipitation method, a TiO2 layer is formed on the surface of the material through hydrolysis of tetrabutyl titanate, the Li2TiO3 coating layer is formed on the surface after lithium mixing, meanwhile, the surface is doped with Ti, and the Li2TiO3 coating and Ti cooperate to improve the electrochemical performance and structural stability of the high-nickel material.

The invention discloses a low voltage varistor ceramic material and a preparation method thereof. The low voltage varistor ceramic material is realized by adding V2O5 and TiO2 simultaneously into a ZnO-Bi2O3 base low voltage varistor ceramic and sintered by a traditional ceramics. A material proportion is as below: a molar ratio of V2O5 to TiO2 to ZnO-Bi2O3 base is 0.05-0.08:0.80-1.30:98.62-99.15, wherein the ZnO-Bi2O3 base comprises components of ZnO, Bi2O3, Co2O3 and MnCO3, and a molar ratio of ZnO to Bi2O3 to Co2O3 to MnCO3 is 97.40-98.20:0.60-0.80:0.80-1.20:0.40-0.60. The invention has advantages of : (1) Ti doping can increase a nonlinear coefficient of a varistor ceramic material and reduce a potential gradient; (2) V doping can reduce a sintering temperature of the ceramic material, save energy consumption and lower cost; (3) pre-burning can enhance powder activity; (4) a technology of segment heating and insulation can enhance quality and performance of the ceramic, reduce energy consumption and save cost.

The invention discloses a transmission cavity frequency stabilizing system and method for realizing long-term laser frequency stabilization and belongs to the field of precise laser frequency stabilization. The frequency stabilizing system mainly comprises a plurality of Ti-doped sapphire lasers, reference cavities, control boxes, a reference laser (helium-noon laser) with stable frequency, a polarization beam splitter, a Fabry-Perot transmission cavity, a photoelectric detector, a function signal generator, an adder, a data acquisition card, a computer and the like. The frequency stabilizing method comprises steps as follows: firstly, two Ti-doped sapphire lasers are locked on the respective reference cavities, and then the reference cavities are locked on the reference laser with stable frequency, so that two Ti-doped sapphire lasers with laser line width smaller than 100 kHz and long-term frequency drift smaller than plus/minus 1 MHz are obtained. The system and the method have the advantages that only one reference laser is used for locking the plurality of Ti-doped sapphire lasers with frequency to be stabilized simultaneously and can lock the Ti-doped sapphire lasers at any frequency within the tunable range, and the extensibility and the frequency stability are very high.

The invention provides a Si/Ti doped terbium aluminum garnet Faraday magneto-optical rotation transparent ceramic. The structural formula of the Si/Ti doped terbium aluminum garnet Faraday magneto-optical rotation transparent ceramic is Tb3Al5-xSiyTizO12, wherein y plus z is equal to x, and the numerical areas of x, y and z are as follows: x is greater than or equal to 0.01 and less than or equal to 0.06, y is greater than or equal to 0 and less than or equal to 0.06, and z is greater than or equal to 0 and less than or equal to 0.06. The preparation method of the Si/Ti doped terbium aluminum garnet Faraday magneto-optical rotation transparent ceramic comprises the following steps: proportioning raw materials according to the structural formula Tb3Al5-xSiyTizO12, adding 0.3wt%-0.7wt% of tetraethyl orthosilicate and performing ball milling, drying, sieving and tableting; and then applying isostatic cool pressure of above 150MPa for pressing into a green body; pre-sintering to remove organic components, and then putting the pre-sintered green body into a sintering furnace for sintering to obtain the Tb3Al5-xSiyTizO12 transparent ceramic. The Si/Ti doped terbium aluminum garnet Faraday magneto-optical rotation transparent ceramic has relatively high optical transmittance within the visible-near infrared waveband and is capable of maintaining the relatively high Verdet constant of the original matrix TAG; the transparent ceramic has the advantages of simple preparation process, low cost, short preparation period and the like.

A process for preparing the Mg and Ti doped Al2O3 crystal and its transparent laser ceramics includes such steps as proportionally mixing Al2O3, MgO and TiO2, adding distilled water, grinding for 24 hr, baking at 150 deg.C, adding polyvinyl alcohol, granulating, cold isostatic pressing to become sheet, precalcining at 1300 deg.C for 3 hr, and sintering in Mo-wire furnace at 1650-1800 deg.C for 1-15 hr.

The invention relates to a preparation method of a Sb2O5 adsorbent containing doped metal ions. The method comprises the steps of combining H2O2 oxidation and ultraviolet irradiation in a non-aqueous system which takes alcohol as a solvent to promote Sb (III) to be oxidized into Sb (V); further utilizing a small amount of water introduced by an H2O2 solution as a reactant to realize hydrolysis for the Sb (V) and metal ion Mn<+> (Si<4+> or Ti<4+>) and form metal ion partial substitution type Sb2O5; preparing a metal ion Si-doped Si/ Sb2O5 adsorbent with a cubic pyrochlore structure and forming metal ion Ti-doped Ti/ Sb2O5 adsorbent with a continuous solid solution structure within different Ti/ Sb proportional ranges. The prepared adsorbent material can be used for effectively removing radioactive isotope Sr ions and complexes of the radioactive isotope Sr ions as well as stable isotope Sr ions and complexes of the stable isotope Sr ions.

The invention discloses a chemical preparation method of a multiferroic BiFeO3 doped film. The method comprises the following eight steps of: firstly, preparing a basic solvent by using ethylene glycol monomethyl ether and propionic acid according to the volume ratio of 3:1; secondly, preparing parent-phase BiFeO3 (BFO) sol; thirdly, preparing doping phase BaTiO3 (BTO) sol; fourthly, cleaning and treating a Pt/Ti/SiO2/Si substrate; fifthly, placing the Pt/Ti/SiO2/Si substrate on a uniform sol coating machine, spin-coating a layer of BFO sol and drying; sixthly, spin-coating a layer of BTO sol on a wet BFO film and drying; seventhly, repeating the fifth and sixth steps to obtain BFO films with different Ba and Ti doping contents; and eighthly, sputtering platinum poles on the BFO films with different Ba and Ti doping contents. The way that cation salt of a doped element is directly added into a parent-phase solution to form entire sol to be spin-coated to form a film is not adopted; but the way that a dopant phase and a parent are respectively prepared into the sols, the sols are separately spin-coated, and solid solution doping is formed through the mutual movement of ions in the thermal treatment process. The chemical preparation method has a better application prospect in the technical field of new materials.

The invention relates to a piston with a Ti-doping diamond multi-layer thick heat-insulating film on the top face and a preparation method and application of the piston. The piston comprises a piston substrate, a transitional layer, n layers of TiC/DLC film layers and m buffer layers, wherein the outermost layer of the top face of the piston is the last TiC/DLC film layer. According to the preparation method of the piston, the transitional layer is prepared on the top face of the piston substrate; then the first TiC/DLC film layer is prepared; one buffer layer is formed on the first TiC/DLC film layer; the TiC/DLC film layers and the buffer layers are formed alternately, so that a middle layer is obtained, and then the last TiC/DLC film layer is prepared. According to the piston with the Ti-doping diamond multi-layer thick heat-insulating film on the top face has excellent abrasion resistance and thermal impact resistance and can meet the requirement of modern engines for high efficiency and low emission.

The invention discloses a magnesium alloy surface blue self pore sealing ceramic layer which consists of a Ti-doped magnesium oxide, the thickness of the layer is 5-30 [mu]m, and the content of Ti is0-10 at.%. A preparation method comprises steps of regulating and controlling the contents of coloring agents and electric parameters of micro-arc oxidation electrolyte to realize regulation and control of the contents of doped metal elements in a micro-arc oxidation ceramic layer, a blue micro-arc oxidation ceramic layer is formed by virtue of the light interference action of metal elements, thedoping content of the metal elements is 0-10 at.%, and the thickness of the ceramic layer is 5-30 [mu]m. The ceramic layer has the advantages that the blue ceramic layer has the self pore sealing characteristic, the corrosion resistance and the mechanical properties of the ceramic layer are greatly improved when being compared with those of a conventional magnesium alloy surface white micro-arc oxidation ceramic layer, the ceramic layer is relatively well applicable to industrial popularization and can be applied to fields such as 3C products, decoration, military projects and optical equipment.

The invention discloses a titanium-doped mesoporous material Ti-SBA-15, and a preparation method and application thereof. Titanium doping is carried out on the basis of the preparation of an SBA-15 mesoporous material by taking lactic acid as a metal ion complexing agent, a complex after complexing with Ti(SO4)2 as a titanium source and tetraethoxysilane as a silicon source, so that the titanium-doped mesoporous material Ti-SBA-15 is prepared. The stable complex is generated by using complexing of lactic acid and Ti(SO4)2, so that the problem that the prepared Ti-SBA-15 is non-uniform in structure and non-uniform in titanium distribution caused by the fact that Ti(SO4)2 is extremely easily hydrolyzed in a water solution to generate TiO2. The Ti-SBA-15 prepared in the invention can serve as an adsorbing material for adsorbing and processing dye wastewater.

The invention belongs to the field of surface modification of materials, and particularly relates to a modified thin film containing a Ti transition layer and Ti-doped diamond deposited on the surfaceof a matrix and a method. By using the technology of plasma-enhanced unbalanced magnetron sputtering physical vapor deposition (PEUMS-PVD) integrated with plasma-enhanced chemical vapor deposition (PECVD), the modified thin film containing the Ti transition layer and the Ti-doped diamond is deposited on the surface of the matrix. The modified film has a dense surface, is high in wear resistance and corrosion resistance and particularly suitable for the marine atmospheric corrosion environment, and has good protective effects on precise instruments, mini radiators and other instruments in themarine atmospheric environment.

The invention discloses a metal doping method of a lithium iron phosphate anode material. The method comprises the following steps of: (1) first grinding and mixing; (2) first sintering: carrying out first sintering on a dried material obtained in the step (1), wherein the sintering temperature is 300-600 DEG C; (3) second grinding and mixing: adding the material obtained after the first sintering in the step (2) to an ethanol dispersing agent with purity of not less than 85%; carrying out the second grinding and mixing in a grinding machine; adding a carbon source compound, which accounts for 20% of the mass of a Li source compound in the step (1) to the grinder; and continuing to grind the mixture for 2 hours; and then drying the mixture under an oxygen free condition at 100-120 DEG C so as to finish the second adding of the carbon source compound; (4) second sintering: carrying out the second sintering on the dried material obtained in the step (3); and (5) third sintering: carrying out the third sintering on the sintered material obtained in the step (4) so as to obtain Zn and Ti doped lithium iron phosphate anode material.

The invention provides a titanium doping modification method of a vanadium battery graphite felt electrode material, which belongs to the field of green energy materials. The preparation method comprises the steps of ultrasonically cleaning polyacrylonitrile-based graphite felt with deionized water; and drying in a drying oven, soaking the graphite felt in an alkalescent aqueous solution of butyltitanate, performing ultrasonic oscillation, standing, taking out the graphite felt after gel is formed, calcining in a vacuum furnace, performing air cooling, cleaning with deionized water, and drying to obtain the vanadium battery titanium-doped graphite felt modified electrode material with high hydrophilicity, large specific surface area and high electrochemical activity. After the vanadium battery graphite felt electrode material is subjected to titanium doping modification, the titanium doping amount is 1.3 to 2.8%, the water absorption rate is improved by 325 to 413%, the specific surface area is improved by 43 to 65%, and the energy efficiency is improved to 68 to 81% under the current density of 230 mA/cm <2>.

The invention discloses a preparation method of a titanium-doped iron oxide photo-anode with a high photoelectric water decomposition performance. The preparation method comprises the following steps:generating beta-FeOOH on a conductive substrate through hydrothermal synthesis, and carrying out butyl titanate solution soaking and heat treatment to obtain a titanium-doped iron oxide (Fe2O3:Ti) photo-anode; then carrying out solvothermal treatment on the obtained titanium-doped iron oxide electrode to obtain Fe2O3:Ti-M; and finally, carrying out hydrothermal treatment on the Fe2O3: Ti-M through an acid solution. After two-step treatment, oxygen vacancies and other surface defects are introduced to the surface of the Fe2O3:Ti photo-anode, the surface hydrophilicity of the Fe2O3:Ti photo-anode is remarkably improved, the photoelectric water decomposition reaction performance of the Fe2O3:Ti photo-anode obtained through the method is remarkably improved, and the titanium-doped iron oxidephoto-anode has high application value in the future industrial aspect.

The invention discloses a titanium-doped high-nickel ternary lithium ion battery positive electrode material and a preparation method thereof. The preparation method of a titanium-doped high-nickel ternary lithium ion battery positive electrode material comprises the following steps: by taking aluminum salt and titanium salt as raw materials, coating the surface of a nickel-cobalt binary precursor with AlOOH and TiO(OH)2 through hydrolysis, obtaining a ternary precursor after the hydrolysis is completed, mixing the ternary precursor with lithium salt, respectively generating an aluminum compound and a titanium compound through high-temperature calcination and AlOOH and TiO(OH)2, and finally obtaining the titanium-doped high-nickel ternary lithium ion battery positive electrode material. According to the preparation method provided by the invention, the crystal structure of the material is stabilized by means of Al and Ti elements in the shell and the bulk phase, and the dissolution of transition metal ions in the active material in a long-term circulation process is avoided, so that the comprehensive electrochemical performance of the material is improved.

The invention belongs to the technical field of lithium ion battery positive electrode materials, and discloses continuous concentration gradient aluminum-titanium doped cobaltosic oxide. The total doping amount of an aluminum element is 4000-8000 ppm, the total doping amount of a titanium element is 2000-4000 ppm, and the doping amount of the aluminum element and the doping amount of the titaniumelement are both increased in a continuous concentration gradient from inside to outside. The invention further discloses a preparation method and application of the continuous concentration gradientaluminum-titanium doped cobaltosic oxide. The continuous concentration gradient aluminum-titanium doped cobaltosic oxide has relatively high tap density, and concentration gradient doping integratesdoping and coating, so that the stability of the surface and grain boundary of the material is enhanced, and after the cobaltosic oxide disclosed by the invention is sintered into lithium cobalt oxide, the lithium cobalt oxide still has high specific capacity and excellent cycle performance under high voltage. In addition, the preparation method disclosed by the invention is simple in process andconvenient for large-scale production.