10 results about "Ti doping" patented technology

This invention relates to the field of materials science, specifically to a method for preparing a high-bonding, ultrahard nanolayered thin film, the film itself, and its applications. The film comprises a Cr / Ti metal bonding layer, a CrTiN intermediate layer, a TiNC transition layer, and an a-C:Ti nanocomposite surface layer sequentially deposited on a substrate surface. The a-C:Ti ultrahard nanolayered thin film prepared by this invention achieves multi-layer stacking at the microscale by controlling the periodic modulation structure of the bonding layer, intermediate layer, and transition layer, effectively suppressing dislocation and crack propagation. Through Ti doping modification and gradient periodic modulation structure design, the internal stress of the film is reduced, improving its bonding strength, wear resistance, and toughness, reducing the risk of coating cracking or peeling, and enhancing the film's service stability. The a-C:Ti ultrahard nanolayered thin film of this invention is particularly suitable for applications such as precision machining tool coatings, surface strengthening of aero-engine gears and bearings, and wear protection of microelectromechanical systems (MEMS).

This invention provides a titanium-doped sodium iron pyrophosphate precursor, its preparation method, and a battery. The preparation method includes the following steps: introducing a mixed iron-titanium metal source solution, a phosphorus source solution, a pyrophosphate source solution, an oxidant solution, and a pH adjuster into a base solution to perform a co-precipitation reaction, thereby obtaining the titanium-doped sodium iron pyrophosphate precursor. The mixed iron-titanium metal source solution includes an iron source, a titanium source, a bimetallic complexing agent, and a titanium anchoring agent. The bimetallic complexing agent includes an alkanolamine compound, and the titanium anchoring agent includes an organophosphonic acid compound. The preparation method of this invention introduces titanium during the co-precipitation reaction, simultaneously adding specific metal complexing agents and titanium anchoring agents to achieve uniform bulk phase doping of titanium. This fundamentally regulates the electronic structure of the material, improves its electronic conductivity, and solves the problems of poor battery rate performance due to the poor conductivity of sodium iron pyrophosphate, as well as the problems existing in solid-state synthesis.

This invention provides a high-conductivity, ultrathin carbon layer high-compact lithium iron phosphate processing method, relating to the field of lithium-ion battery material preparation technology. The method includes: firstly, mixing and carbonizing asphalt, phenolic resin, and sodium chloride using wet ball milling; using sodium chloride as a pore-forming template to prepare a first carbon source with a porous structure; then mixing iron phosphate, lithium source, phosphorus source, and titanium citrate as a second carbon source, and adjusting the pH to 8-10 to induce structural changes in titanium citrate to achieve lattice titanium doping; finally, adding the first carbon source to the mixture, followed by grinding, drying, and sintering under an inert atmosphere to obtain the lithium iron phosphate cathode material. This invention effectively solves the problem of low compaction density caused by excessively thick carbon layers through the synergistic effect of dual carbon sources and pH control technology, significantly improving the material's conductivity and ion diffusion rate while achieving high compaction density and excellent electrochemical performance.

The invention discloses a titanium-doped zirconium MOF molecularly imprinted electrochemical luminescence sensor for high-sensitivity detection of HER2, and a preparation and detection method thereof, and belongs to the technical field of detection. A titanium-doped zirconium-based metal organic framework (Ti-Zr-TPE MOF) is dispensed on the surface of a working electrode to serve as a luminescent material, Ti-Zr-TPE realizes luminous intensity multiplication in an aggregation state compared with Zr-TPE by further enhancing an intra-molecular motion limited (RIM) mechanism, and a luminous body preparation process, co-reactant screening and detection parameters (such as potential scanning rate and pH value) are systematically optimized, so that the luminous intensity of Ti-Zr-TPE is improved. A set of stable Ti (at) Zr-TPE luminescent system is formed. Meanwhile, dopamine (DA) is used as a functional monomer, and HER2 is subjected to molecular imprinting through a molecular imprinting technology, so that the electrochemical luminescence sensor of a quenching system is constructed. The luminescent material based on the novel tetraphenyl ethylene (TPE) derivative has the advantages of high luminescent intensity, low background signal, high stability and specificity, simplicity and convenience in operation and the like, and has obvious advantages compared with a previously developed sensor for detecting HER2. According to the invention, quantitative detection of HER2 can be realized, and an innovative solution is provided for clinical early warning.

This invention, entitled "A Preparation Method and Application of Titanium-Doped Iron Oxide Red," belongs to the field of lithium-ion battery cathode material technology. The preparation method involves: controlling the titanium content of ferrous sulfate, a byproduct of titanium dioxide production; precipitating and removing impurities from it with Fe and Ti elements; adjusting the pH; and adding Fe... 2+ Heating, filtration, washing, and drying yield titanium-doped iron oxide red precursor powder. This invention uses ferrous sulfate, a byproduct of titanium dioxide production, as the iron source and utilizes its titanium impurities for in-situ titanium doping, thus producing high-purity titanium-doped iron oxide red with adjustable titanium content, high purity, and low impurity content. Furthermore, the entire preparation process of titanium-doped iron oxide red is simple, has a short production time, and is low in cost.

The application discloses modified sodium iron pyrophosphate phosphate, a preparation method, application, slurry, an electrode piece and a battery. The preparation method of the modified sodium iron pyrophosphate phosphate comprises the following steps: performing gas phase deposition of powder on an Al2O3 nano layer oriented growth (010) crystal face to obtain the modified sodium iron pyrophosphate phosphate; and the powder is manganese and titanium doped sodium iron pyrophosphate phosphate powder containing a fluorinated layer on the surface. Through the triple synergy of Mn / Ti double site doping, crystal face selective Al2O3 coating and gas phase fluorination, the effects of improving electronic conductivity, inhibiting electrolyte interface side reactions and improving the low-temperature performance of the battery are achieved.

The present invention relates to a method for producing a conductive, Ti-doped MoOx coating, with 2 ≤ x ≤ 3, a Ti:Mo ratio from 1 to 99 mol%, on a particulate substrate by gas phase deposition, comprising the steps: a. Providing the particulate substrate; b. contacting it with vaporised Ti and Mo precursors, thereby forming precursor material layer; c. contacting the precursor layer with a vaporized oxidant and react with the precursor layer at a temperature T1 allowing for removal of ligands from the precursor(s), yielding a Ti-doped MoOx layer on the substrate surface; d. carrying out steps b. - c. for multiple cycles to stack layers of the coating until a coating thickness d1 between 0.1 and 50 nm is obtained; and e. annealing the coating at elevated temperatures T2.

The invention discloses a high-titanium-doped lithium niobate target material, a preparation method thereof and a sensor, and the preparation method comprises the following steps: adding an acidic lithium-containing solution into a mixed solution of titanium and niobium, and reacting to obtain gel; performing heat treatment on the gel to obtain powder; and preparing the high-titanium doped lithium niobate target material according to the powder. The invention provides a wet chemical method for preparing the Ti-doped LiNbO3 target material, a high-density and fine-grain target material microstructure is easy to obtain, elements are uniformly distributed, and a relatively high Ti element proportion can be doped. Besides, the Ti-doped LiNbO3 piezoelectric coating obtained on the basis of the high-titanium-doped lithium niobate target material is extremely high in substance purity and has very excellent piezoelectric performance, and the piezoelectric constant d33 is greatly increased and reaches 12.4 pC / N.

The application discloses a high-stability sodium-based Ni x Fe y Mn z O2 positive electrode material and a preparation method thereof, and belongs to the technical field of sodium ion battery positive electrode materials. The positive electrode material comprises a NaNi x Fe y Mn z O2 matrix, Ti elements doped in the matrix and a composite layer coated on the surface of the matrix. The preparation method adopts a sol-gel method combined with a segmented sintering process: nickel source, iron source and manganese source are dissolved, and titanium source is added, and a crystal boundary strengthening layer is formed through gelation, drying and calcination; subsequently, titanium source and silicon source are added for ball milling, and a surface coating layer is formed through sintering, and finally, annealing is performed under nitrogen protection. Through the three-in-one synergistic modification of bulk Ti doping, Na2TiO3 strengthening of the crystal boundary and surface coating, lattice distortion and particle cracking are effectively inhibited, the cycle capacity retention rate reaches 88-93%, the initial specific discharge capacity is high, the interface impedance is low, the process is compatible with the existing large-scale production process, and the positive electrode material has excellent industrial application prospect.