915 results about "Aluminum element" patented technology

The invention discloses a method for preparing nickel cobalt aluminum serving as a cathodic material of a lithium ion battery, which comprises the following steps of: mixing nickel salt solution and cobalt salt solution uniformly, adding complexing agent solution, precipitant solution and the mixed solution into a reaction kettle with base solution in a parallel flow mode to perform precipitation reaction, performing solid-liquid separation after the reaction is performed fully, and washing; adding the washed solid material into the reaction kettle, dripping aluminum salt solution and the precipitant solution slowly to perform secondary precipitation reaction, so that an aluminum element is precipitated on the surface of the solid material gradually, stirring continuously in the integral process, performing solid-liquid separation after the reaction is finished, and washing and drying the solid material to a precursor of the cathodic material of the lithium ion battery; and mixing the precursor and a lithium source, performing two-section sintering under the condition of introducing oxygen, and crushing the calcined material which is subjected to the two-section sintering and performing subsequent processing to obtain the nickel cobalt aluminum serving as the cathodic material of the lithium ion battery. The method has the advantages of low requirement on equipment, high automation degree, environment friendliness, few wastes, high quality of products and the like and is easy to operate.

The invention discloses a method for preparing nickel-cobalt lithium aluminate as an anode material of a lithium ion battery. The method comprises the following steps: (1) mixing a nickel-cobalt metal salt water solution, a sodium metaaluminate solution, a complexing agent and a precipitant, regulating the pH value of a reaction system to be 9 to 12, and then maintaining a stirring state to carrying out a reaction at the temperature of 30 to 80 DEG C for 20 to 200 hours, thereby obtaining nickel-cobalt aluminum hydroxide precipitates; (2) washing the nickel-cobalt aluminum hydroxide precipitates by using pure water of 50 to 100 DEG C, drying, screening the part of precipitates capable of passing through a sieve being 300 meshes, adding a lithium source to the precipitates, mixing evenly, and sintering at the temperature of 600 to 1000 DEG C, wherein oxygen is filled during the sintering process; and finally sintering for 5 to 50 hours, thereby obtaining the nickel-cobalt lithium aluminate. According to the method, the sodium metaaluminate is adopted as the lithium source, so that the nickel-cobalt aluminum elements can evenly form a coprecipitation, so that the aluminum is evenly distributed in the nickel-cobalt lithium aluminate material. As a result, the electrical performance of the material is improved, and especially the cycling performance of the material is improved.

The invention provides a process for hydrothermally synthesizing fly ash into a highly-pure zeolite and a fly ash zeolite adsorbent, which comprises the following steps: adding alkali solution into fly ash, obtaining solution containing silicon elements and aluminum elements under the hydrothermal condition, adding a certain amount of base soluble Al2O3 or SiO2 in the solution containing the silicon elements and the aluminum elements, and then preparing the highly-pure zeolite after hydrothermal reaction is carried out for a certain time; and adding the fly ash or the fly ash which is not dissolved under the hydrothermal condition into sodium hydroxide or sodium carbonate to be mixed uniformly (be calcined at a certain temperature), carrying out the hydrothermal condition, and then obtaining the fly ash zeolite adsorbent. The invention has simple process; the purity of the prepared highly-pure zeolite can achieve above 90 percent; and the prepared fly ash zeolite adsorbent has stronger adsorption capacity for heavy metal ions or organic wastewater.

A method of manufacturing a first phosphor of which emission spectrum shape well matches with a color filter of three primary colors of light, a light-emitting device including the first phosphor, and an image display apparatus including the light-emitting device are provided. The light-emitting device includes a semiconductor light-emitting element emitting excitation light and the first phosphor absorbing the excitation light and emitting green light. The first phosphor contains a solid solution of aluminum element and a metal element M selected from the group consisting of Mn, Ce and Eu in crystals of an oxynitride having a β-type Si₃N₄ crystal structure, an amount of oxygen in the crystals being not higher than 0.8 mass %.

The invention discloses a high-speed-extrudable wrought magnesium alloy and a preparation method thereof. The high-speed-extrudable wrought magnesium alloy comprises the following components in percentage by mass: 2wt%-10wt% of Bi, 0.5wt%-5wt% of Al, 0.1wt%-2wt% of Zn, 0.1wt%-1.0wt% of Mn and the balance of magnesium. According to the high-speed-extrudable wrought magnesium alloy, the element Bi is taken as a main alloy element, lots of Mg3Bi2 phases are formed by virtue of a simple alloying measure, and a small quantity of aluminum elements and zinc elements are supplemented, so that the plasticity of the alloy is improved; and by combining a manganese element, the corrosion resistance is improved, and the high-speed-extrudable high-strength magnesium alloy is developed from the alloy series and can be applied to high speed extrusion with the extrusion speed which is not less than 20m/min.

An aluminum electric wire with crimp-type terminal includes a coated electric wire including a conductor having a plurality of twisted aluminum element wires made of an aluminum alloy, a conductor portion where the plurality of aluminum element wires exposed by stripping an insulating coating of the coated electric wire are integrally formed into a solid wire, a crimp-type terminal made of a copper alloy having a conductor crimping portion crimped to couple to the conductor portion formed into the solid wire, and a water-repellent agent provided for a front side exposed conductor portion and a rear side exposed conductor portion 49 exposed to outside air without being covered by the conductor crimping portion of the crimp-type terminal.

The invention provides a capacitor electrode member in which layers constituting the electrode member are highly adhesive. The capacitor electrode member comprises aluminum material (1), a carbon-containing layer (2) formed on the surface of the aluminum material (1), and further an interposition layer (3) containing an aluminum element and a carbon element, the interposition layer being formed between the aluminum material (1) and the carbon-containing layer (2). The interposition layer (3) constitutes a first surface portion which is formed on at least a part of the region of the surface of the aluminum material (1) and contains a carbide of aluminum. The carbon-containing layer (2) constitutes a second surface portion (21) formed so as to extend outward from the first surface portion (3). The carbon-containing layer (2) further contains carbon particles (22) and the second surface portion (21) is formed between the first surface portion (3) and the carbon particles (22) and contains a carbide of aluminum.

The invention discloses a method for secondary aluminum ash harmless use. The method comprises the following steps: mixing water with secondary aluminum ash, heating, stirring, leaching, and carryingout solid-liquid separation after water leaching so as to obtain primary filtrate and primary filter residues; heating and evaporating the primary filtrate so as to obtain a soluble salt; mixing the primary filter residues with an acid, heating and stirring to achieve leaching; after acid leaching, and carrying out solid-liquid separation so as to obtain secondary filtrate and secondary filter residues; manufacturing bricks with the secondary filter residues; adjusting the pH value of the secondary filtrate within 2.5-3.0; heating and aging the secondary filtrate after the pH value is adjusted, thereby obtaining aluminum polychlorid. By adopting the method, the aluminum element in secondary aluminum ash can be utilized to the maximum extent, aluminum nitride which is hard to react with theacid can be converted into aluminum hydroxide which is easy to react with the acid through high-temperature water leaching, dissolution of the aluminum element in the secondary aluminum ash can be improved, and the content of aluminum oxide in a prepared aluminum polychlorid product can be increased; in addition, a salt solvent and a nitrogen element in the secondary aluminum ash can be recycled,and damage of leaching residues upon the environment can be reduced.

The invention provides an in-vivo controlled degradable bacteriostatic Mg-Ag-Zn-Mn magnesium alloy implant material and a preparation method thereof. The material has an in-situ bacteriostasis function and comprises the following components in percentage by weight: 0.05-8.0% of Ag, 0.005-6.5% of Zn, 0.1-2.0% of Mn and the balance of Mg. The in-vivo controlled degradable bacteriostatic Mg-Ag-Zn-Mn magnesium alloy implant material not only can be used for solving the problem that the current clinic titanium and stainless steel metal implant materials are non-degradable in vivo, but also can be used for solving the problem that potential toxic elements such as rare earth or an aluminum element and the like exist in the traditional degradable biomedical magnesium alloy technology, has favorable biocompatibility and the mechanics and corrosion degradation matching performance, and also has a remarkable in-situ bacteriostasis effect so that the infection probability of an implanted part is effectively reduced.

The invention relates to the technical field of lithium ion batteries, in particular to a preparation method of large-particle narrow-distribution aluminum doped tricobalt tetroxide. The method includes a stage of continuously synthesizing large-particle narrow-distribution aluminum doped cobalt carbonate, and a stage of calcining the large-particle narrow-distribution aluminum doped cobalt carbonate. A large-particle cobalt carbonate precursor prepared by continuous centrifugation to improve the solid content, the continuous synthesis method and a special aluminum salt method in the cobalt carbonate wet-process synthesis stage is dense, narrow in particle size distribution, good in sphericity and uniform in aluminum element distribution. Through a three-step calcination method, the temperature in the first step is 180-250 DEG C and the cobalt carbonate is partially decomposed to form a micropore channel; the cobalt carbonate is completely decomposed in the second step in which the temperature is 300-500 DEG C; in the third step, the temperature is 650-800 DEG C, particle surfaces are densified, the content of the cobaltous phase is lower, the crystal form is more complete, and thelarge-particle narrow-distribution aluminum doped tricobalt tetroxide is formed. .

There are provided aluminum elements covered on their surfaces with a coating film free from harmful hexavalent chromium compounds and fluorine compounds. Particularly, aluminum dicast and aluminum cast materials having excellent paint adherence and corrosion resistance are provided. The coating film for aluminum elements comprises (i) chromium, (ii) zinc and (iii) cobalt and/or titanium with 95% by mass or more of said chromium being a trivalent chromium.

The invention provides a lithium-manganese-aluminum oxygen anode material, which has the atomic ratio of LiaMn2-x-yAlxMyO4; the concentration of A1 is in a gradient distribution presenting gradually risen from the inner part of the lithium-manganese-aluminum oxygen anode material to the surface; the concentration of Mn is in a gradient distribution presenting gradually decreased from the inner part of the lithium-manganese-aluminum oxygen anode to the surface. The invention further provides a preparation method of lithium-manganese-aluminum oxygen anode material. By adding solution or turbid liquid of aluminum source compound in the precipitation process, the aluminum element replaces the position of a manganese element in the formed lithium-manganese-aluminum material, so that the spinel structure of the lithium-manganese-aluminum material is stabilized, the forming of the lattice defect is avoided and the well high-temperature circulating performance of the lithium-manganese-aluminum material is guaranteed, the dissolution of manganese in the electrolyte is reduced and the high-temperature circulating performance of the lithium-manganese-aluminum oxygen anode material is further improved.

The invention provides a capacitor electrode member in which layers constituting the electrode member are highly adhesive. The capacitor electrode member comprises aluminum material (1), a carbon-containing layer (2) formed on the surface of the aluminum material (1), and further an interposition layer (3) containing an aluminum element and a carbon element, the interposition layer being formed between the aluminum material (1) and the carbon-containing layer (2). The interposition layer (3) constitutes a first surface portion which is formed on at least a part of the region of the surface of the aluminum material (1) and contains a carbide of aluminum. The carbon-containing layer (2) constitutes a second surface portion (21) formed so as to extend outward from the first surface portion (3). The carbon-containing layer (2) further contains carbon particles (22) and the second surface portion (21) is formed between the first surface portion (3) and the carbon particles (22) and contains a carbide of aluminum.

The invention discloses a heat-conducting aluminum alloy and application thereof. The heat-conducting aluminum alloy comprises alloying elements, unavoidable impurities and the balance aluminum element. By taking the total weight of the heat-conducting aluminum alloy as a benchmark, the alloying elements comprise 5.0-11.0% of Si, 0.4-1.0% of Fe, 0.2-1.0% of Mg, less than 0.1% of Zn, less than 0.1%of Mn, less than 0.1% of Sr and less than 0.1% of Cu. According to the prepared heat-conducting aluminum alloy, the tensile strength is not less than 250 MPa, the yield strength is not less than 150MPa, the ductility is not less than 3.5%, and the heat conducting coefficient is not less than 150 W/(m.K); and the mechanical property is high, the flow forming performance is good, and good heat conductivity can further be maintained through repeated recycling.

The invention belongs to the field of lithium ion batteries, provides a lithium ion battery positive electrode material with ultrahigh energy density, and aims to overcome the defects that nickel cobalt lithium manganite is poor in electrochemical performance and low in specific capacity and energy density. A molecular expression of the lithium ion battery positive electrode material is Li(Ni0.6Co0.2Mn0.2)1-xAlxO2-yFy, wherein x is greater than 0, and y is smaller than or equal to 0.05; a small amount of aluminum element replaces part of nickel element, and a fluorine element partially replaces an oxygen element, so that an internal structure of the material is stabilized, and structure collapse under a high-proportion lithium-removing state is inhibited; by co-doping aluminum with fluorine, specific discharge capacity and comprehensive electrochemical properties of the material are greatly improved; energy density is remarkably improved; besides, according to the lithium ion battery positive electrode material disclosed by the invention, a precursor material of which nickel elements are gradually distributed is prepared by adopting a gradient coprecipitation method; the concentration of the precursor material is gradually increased from inside to outside, so that the specific discharge capacity of the positive electrode material is favorably improved; a prepared product is high in purity, high in chemical uniformity and high in crystallization quality; products are small in particles, uniform in distribution, excellent in electrochemical performance and lower in manufacturing cost.

A metal manganese modified silicon-aluminum molecular sieve material Mn-SSZ-13 is provided. The material comprises 0.1-10% of manganese, 0-15% of aluminum, 75-100% of silicon and 0-25% of copper. Two materials have CHA type topological structures, and the specific surface area measured by a BET process after calcination at 600 DEG C for 4 h is not less than 500 m<2>/g. A preparing process includes fully mixing a copper source (may be none), a template, an aluminum source, sodium hydroxide, a silicon source and water according to a certain sequence to obtain an initial gel solution, crystallizing, performing ammonium chloride ion exchange, calcinating and performing manganese ion exchange to obtain a product. The prepared molecular sieve material has advantages of high MTO diolefin selectivity and long catalytic service lifetime, and can be used for nitrogen oxide selective reduction (SCR catalysts).

The invention belongs to the technical field of porous ceramics, and discloses high-strength porous ceramics and a low-temperature preparation method thereof. The method comprises the steps: (1) mixing raw materials, wherein the raw materials include solid waste, low-grade minerals and an additive, and the raw materials also include an aluminum source when an aluminum element in the raw materialsis insufficient; (2) molding the mixed raw materials into green bodies; (3) firing the green bodies at the temperature of 800-1300 DEG C to obtain the high-strength porous ceramics, wherein the additive is one or more of alumina, nitrate, carbonate, sulfate, phosphate, fluoride and borax. The solid waste and the low-grade minerals are used as a part of the raw materials, the recovery and utilization of resources are realized, and the method is environmentally friendly and economical; the method has the advantages of wide range of the raw materials, simple process (one-step in-situ preparationof a whisker skeleton structure), and low production cost, and is suitable for industrial production. At the same time, the method has less energy consumption, and the prepared porous ceramics have the whisker skeleton structure and have the advantages of high porosity, low density and high mechanical strength.