13 results about "Titanium sulfide" patented technology

This invention relates to a method for preparing ultra-pure smelting of high-strength and high-toughness special steel at ultra-low temperatures. The chemical composition (wt%) is controlled as follows: C≤0.01%, Si≤0.05%, Mn≤0.05%, S≤0.005%, P≤0.005%, Ni: 17.5~18.5%, Co: 8.0~9.0%, Mo: 3.0~3.8%, Al: 0.05~0.15%, Ti: 0.20~0.35%, H≤1.0 ppm, O≤16 ppm, N≤15 ppm, with the balance being Fe and other unavoidable impurities. Core Technology: A five-element synthetic slag system of CaO-SiO2-Al2O3-MgO-CaF2 is introduced during the VIM stage. Utilizing the high-speed directional solidification effect of VAR steady-state remelting, and through matching the smelting environment and cooling rate, the coarse, brittle titanium sulfide phase is transformed into finely dispersed Al-Mg-Ti-S-O multiphase composite oxides. This achieves composite modification of inclusions and reduces their number density from 45 inclusions / mm². 2 Reduced to 8.5 pieces / mm 2 It effectively eliminates the hazards of large particles >4μm. The average grain diameter of the original austenite is refined from 42.37μm to 26.38μm, the elongation of the material reaches 21.06%, and the impact energy is as high as 143.63J, significantly improving the resistance to brittle fracture and possessing extremely high engineering application value.

The invention belongs to the field of aqueous batteries, and particularly relates to a sulfur-rich phase titanium disulfide material as well as a preparation method and application thereof. The preparation method comprises the following steps: mixing a titanium source and a sulfur source, and sintering by a solid phase method to prepare titanium disulfide powder; preparing the titanium disulfide powder into an electrode plate; taking the electrode plate as a positive electrode, and jointly assembling the electrode plate, a negative electrode, electrolyte and a diaphragm into a battery; and charging the assembled battery to obtain the activated titanium disulfide electrode material. According to the invention, a sulfur-rich titanium disulfide material is obtained as an electrode material through a strategy of carrying out electrochemical activation through charging, and the existence of high-valence sulfur ions can activate an oxidation-reduction reaction based on anions in TiS2, so that the charge storage capacity of TiS2 is greatly improved, and excellent cycling stability is shown.

The embodiment of the invention provides a semiconductor structure, a forming method thereof and a semiconductor device. The semiconductor structure comprises a dielectric layer, an adhesion barrier layer and a metal interconnection layer are deposited in a through hole formed in the dielectric layer, and the adhesion barrier layer is only located on the side wall of the through hole and is an amorphous tantalum sulfide or titanium sulfide film. The adhesion barrier layer can be obtained by adopting an inhibitor-assisted atomic layer deposition process to form a tantalum sulfide or titanium sulfide thin film and then annealing the tantalum sulfide or titanium sulfide thin film. In the semiconductor structure, the adhesion barrier layer is adopted to replace a conventional stacked structure of a barrier layer and an adhesion layer, so that the volume ratio of a metal interconnection material in the through hole interconnection structure is large, the adhesion barrier layer does not exist at the bottom of the through hole of the through hole interconnection structure, the volume ratio of the metal interconnection material can be further increased, and the performance of the semiconductor structure is improved. And the problem that the resistance value of the interconnection structure is large due to the adhesion barrier layer at the bottom of the through hole is solved.

The present invention discloses a negative electrode material modified with a polymer, a preparation method and an application thereof, wherein the negative electrode material comprises titanium disulfide and a polymer embedded between titanium disulfide layers; the polymer is polypyrrole, polyaniline or polythiophene. Traditional zinc ion batteries generally use metallic zinc as the negative electrode. Although metallic zinc has the characteristics of good conductivity, low toxicity and high specific energy, it is easy to form dendrites during the charge and discharge cycle of the battery, piercing the diaphragm and causing the battery to short-circuit, thereby affecting the cycle life of the battery. The negative electrode material provided by the present invention is obtained by modifying the titanium disulfide interlayer with a polymer. When used in aqueous zinc ion batteries, it not only avoids the zinc dendrite problem caused by using metallic zinc as the negative electrode material, but also can effectively improve the battery's specific capacity, cycle stability and rate capability, thereby extending the service life of the aqueous zinc ion battery and expanding the scope of application of the aqueous zinc ion battery.

This invention discloses a high-rate-performance titanium-sulfurized polyacrylonitrile (TSU) cathode material and its preparation method. Amorphous titanium polysulfide replaces elemental sulfur as the sulfur source for TSU. A portion of the titanium enters the bulk structure of the TSU via Ti-S bonds, while the remaining portion is in situ coated on the surface of the TSU cathode material as titanium disulfide, thereby improving the rate performance of the cathode material. The titanium disulfide@TISU cathode material exhibits excellent cycle stability, rate performance, and coulombic efficiency. At 1C, the material maintains a stable cycle capacity of 700 mAh / g, with an average coulombic efficiency greater than 99.9% after 300 cycles. Even at 30C, the material still maintains a cycle capacity of 430 mAh / g. This method significantly promotes the practical application of lithium-sulfur batteries.

The invention relates to a method for the preparation of titanium or tantalum sulfides comprising the following steps: a) Adding a titanium or tantalum precursor to an anhydrous solvent under inert conditions, b) Adding a sulfur source to the mixture of step a), c) optionally providing a substrate for heterogeneous growth, d) transferring the mixture of step b) and optionally the substrate of step c) into a suitable container, under inert conditions and sealing the container, e) heating the sealed autoclave of step d) to a temperature of between 170°C and 250°C, preferably between 200°C and 230°C, especially to 210°C, thereby applying autogenous pressure, and f) obtaining, optionally washing the titanium sulfide or tantalum sulfide particles with an organic solvent, and drying, and to the use of the titanium or tantalum sulfide thus prepared, as well as to a substrate with a layered crystal titanium or tantalum sulfide grown on the substrate according to the method above.

The invention relates to the technical field of wear-resistant materials, in particular to titanium monosulfide particles and a composite material thereof as well as preparation and application of the titanium monosulfide particles and the composite material thereof. The titanium monosulfide particles are of a layered approximately elliptical block structure formed by stacking two-dimensional nanosheets; the particle size of the titanium monosulfide particles is 20-30 microns, obvious gaps exist between the two-dimensional nanosheet layers, and the size of the gaps is 0.1-0.5 micron. The titanium monosulfide particles disclosed by the invention have good ultrahigh-temperature wear resistance and lubricity.

This invention provides a method for producing titanium-based metals that allows the Ca in the deoxidizing and desulfurizing agent to contribute effectively to the deoxidation reaction, thereby reducing the O content of the titanium-based metal raw material. [Solution] The present invention provides a method for producing a titanium-based metal from a titanium-based metal raw material containing oxygen, wherein the method includes an oxygen reduction step for reducing the oxygen content of the titanium-based metal raw material, the method comprising: a melting step of heating the titanium-based metal raw material together with a sulfur source containing elemental sulfur and / or titanium sulfide to obtain a melt; a deoxidation step in which the melt contains a deoxidizing and desulfurizing agent containing Ca, and in the melt, the Ca of the deoxidizing and desulfurizing agent reacts with at least a portion of the oxygen in the titanium-based metal raw material; and a desulfurization step in which, after the deoxidation step, the melt contains a deoxidizing and desulfurizing agent containing Ca, and in the melt, the Ca of the deoxidizing and desulfurizing agent reacts with at least a portion of the sulfur in the sulfur source.

The invention discloses a titanium tetrasulfide / carbon material composite positive electrode material for an all-solid-state lithium battery and a preparation method of the titanium tetrasulfide / carbon material composite positive electrode material, and belongs to the technical field of electrochemical energy storage. The composite positive electrode material is formed by compounding amorphous TiS4 nanospheres, reduced graphene oxide (rGO), carbon nanotubes (CNT) or vapor-grown carbon fibers (VGCF) through a liquid phase method, and the mass ratio of the carbon material is 5%-15%. In the preparation process, targeted surface modification processes are designed for different carbon materials, then a uniform mixing state is fixed through liquid phase dispersion and freeze drying, and finally, tight compounding of TiS4 and the carbon materials is achieved through inert atmosphere high-energy ball milling. The defects that pure TiS4 is low in electronic conductivity, high in charge-discharge volume expansion rate and large in interface impedance are effectively overcome, the composite positive electrode material is excellent in compatibility with sulfide solid electrolyte, and the assembled all-solid-state lithium battery has high energy density, long cycle stability and high safety and is suitable for large-scale production. The method is suitable for electric automobiles, wearable electronic equipment and energy storage systems.

The invention relates to the technical field of preparation of carbon nanotubes by a catalytic pyrolysis method, in particular to a titanium disulfide / iron nitrogen doped carbon nanotube composite material as well as a preparation method and application thereof. The preparation method is divided into two parts, wherein in the first part, the iron-nitrogen-doped carbon nanotubes (FeNCNTs) loaded iron nanoparticles are prepared through a high-temperature cracking method in combination with an acid treatment measure; the first part is titanium disulfide / iron nitrogen doped carbon nanotube composite material (TiS2 atFeNCNTs), the second part is titanium disulfide / iron nitrogen doped carbon nanotube composite material (TiS2 atFeNCNTs) obtained through a solvothermal method and a high-temperature solid-phase synthesis method, the titanium disulfide / iron nitrogen doped carbon nanotube composite material can replace expensive carbon nanotubes, the use specific capacity of titanium disulfide under high power is improved, and the titanium disulfide / iron nitrogen doped carbon nanotube composite material has the advantages of being low in cost, easy to put into production and easy to implement.

The invention discloses a method for preparing a macro-micro directional structure through variable-diameter fused deposition, and belongs to the technical field of additive manufacturing. The preparation method comprises the following specific steps: adding part of titanium trisulfide nanorods into polyether-ether-ketone powder, carrying out high-energy ball milling, adding the rest of filler and antistatic agent, carrying out low-energy ball milling, carrying out multi-stage sequential blending to obtain composite powder, and carrying out screw segmented heating, melting and extrusion and gradient slow cooling and shaping to obtain the titanium trisulfide / polyether-ether-ketone composite material. And finally, the ratio Vp / f of the printing speed to the wire feeding speed in the forming process is controlled, ordered stacking deposition is conducted on a fused deposition path in the single direction, and the macro-micro orientation structure with the titanium trisulfide nanorod orientation consistent with the polyether-ether-ketone printing path direction is prepared. The method is easy to operate, the process is flexible and controllable, and the prepared titanium trisulfide nanorod / polyether-ether-ketone macro-micro orientation structure has the advantages of being good in orientation, high in heat conductivity, high in electrical conductivity, good in wear resistance, large in tensile strength and the like and can be widely applied to the fields of aerospace, electronic chips, medical instruments, transportation and the like as a supporting structure.

A positive electrode composite material comprising: a titanium sulfide TiSx (2lt; xlt; 10) and / or a discharge product of the titanium sulfide; and a sulfide solid electrolyte having a diffraction peak in which 2 [theta] is 20.1 + / -0.4 DEG in X-ray diffraction using a CuK [alpha] ray.

The present invention discloses a method for preparing a modified lithium-rich manganese-based single crystal material. The present invention uses alumina heterogeneous nucleation as the core to prepare a lithium-rich manganese-based precursor by a co-precipitation method, then reacts with a concentrated alkali solution, dries the powder, and crushes the powder to prepare a lithium-rich manganese-based single crystal precursor; titanium tetrachloride vapor and hydrogen sulfide gas are mixed and heated to react, and titanium disulfide crystals are collected on the cooling wall, and then a soluble salt is added to the titanium disulfide dispersion, stirred, and the lamellar structure of titanium disulfide is restricted to the structure of the salt by heating, the solvent is volatilized, water is added to dissolve the salt, and titanium disulfide with a lamellar structure is obtained by filtration; finally, the lithium-rich manganese-based single crystal precursor, lithium salt, and lamellar titanium disulfide are mixed and sintered to obtain the material. The modified lithium-rich manganese-based single crystal material prepared by this method has a structurally stable single crystal morphology, excellent electronic conductivity and ionic conductivity, so the material has excellent rate, capacity and cycle stability.