6results about How to "Good particle shape" patented technology

The lithium nickel manganese oxide positive electrode material, the preparation method thereof and the electrochemical device are characterized in that the lithium nickel manganese oxide positive electrode material provided by the embodiment of the invention comprises a base material and a coating layer located on the surface of the base material, the general formula of the base material is Li (LiaNixMnyMbO4), the element M comprises at least one of Ti, Zr, Al, Nb and Mo, and a is more than or equal to 0.02 and less than or equal to 0.06; 0.45 < = x < = 0.55, 1.4 < = y < = 1.6; 0.05 < = b < = 0.55; a + x + y + b = 2, and the coating layer contains phosphate. According to the lithium nickel manganese oxide positive electrode material, through doping and coating technologies, under the condition that the capacity is not sacrificed, the gas production phenomenon is effectively reduced, the cycling stability of the lithium nickel manganese oxide positive electrode material is improved, and the service life of an electrochemical device applying the lithium nickel manganese oxide positive electrode material is prolonged.

This invention discloses a compound traditional Chinese medicine powder inhaler for respiratory tract infections and its preparation method, relating to the field of pharmaceutical formulation technology. The compound traditional Chinese medicine powder inhaler for respiratory tract infections is composed of polysaccharide composite gel microspheres, forsythia, scutellaria, honeysuckle, and isatis root. The polysaccharide composite gel microspheres are composed of seaweed sulfated polysaccharide, lentinan, calcium chloride, and curcumin. Seaweed sulfated polysaccharide, lentinan, curcumin, and calcium chloride cross-link to form a three-dimensional network spherical structure, improving the particle morphology and flowability of the micropowder. Furthermore, due to its good hygroscopic and moisturizing properties, it competitively reduces the moisture absorption of the micropowder, preventing aggregation and further improving flowability. In addition, the gel microspheres have excellent adhesion, adhering to the infection site after entering the respiratory tract, reducing expulsion losses due to respiration, maintaining an effective drug concentration at the infection site, and improving therapeutic efficacy.

The invention discloses an aluminum alloy and a preparation method and application thereof. The aluminum alloy, in an Al-Mg alloy system, simultaneously contains Mn, Cr, Cu, Zn and X element (at least two of Sr, Mo and Zr) by optimizing the alloy formula, and further controls their contents. The combination can weaken the damage of coarse second phase particles to strength and forming performance, and improve the tolerance of the alloy to impurity elements such as Fe and Si and Mn element. Therefore, recycled materials can be used for production, and the proportion of original aluminum used is reduced. The aluminum alloy itself has very good recyclability, is economical, low-carbon and energy-saving. During preparation, the aluminum alloy is first made into an ingot, and then subjected to homogenization treatment, hot rough rolling, hot finish rolling, cold rolling and annealing treatment. Practice shows that the aluminum alloy of the invention at least achieves a balance of alloy properties such as tensile strength, yield strength and elongation after fracture, and can be used in the fields of preparing automobile body parts.

The invention belongs to the field of sodium-ion batteries, and particularly relates to a sodium-ion battery positive electrode material and a preparation method and application thereof. The preparation method comprises the following steps: S1, carrying out first mixing on a nickel source, a manganese source, a tellurium source and water to obtain a mixed solution, adding a precipitator and a chelating agent, and carrying out reaction, aging and first drying to obtain a precursor; and S2, carrying out second mixing on the precursor, a sodium source and a calcium source, carrying out second drying, compacting, and sintering to obtain the sodium ion battery positive electrode material, the tellurium element is introduced to regulate and control the particle morphology of a precursor microstructure and realize an in-layer Te-Ni-Ni-Te ordered upper layer structure, the ligand level structure is adjusted, and lattice oxygen loss is inhibited; the calcium element is added to maintain the cation content in the sodium layer and relieve O2-O2-rejection in the sodium extraction process, so that the prepared sodium ion battery positive electrode material can maintain a pure P2 type structure and has excellent capacity performance and cycle performance.

The invention discloses a wet-process sandstone powder activity excitation diagenesis agent and application thereof in preparation of recycled aggregate. The stone powder activity excitation diagenesis agent comprises 5-10 parts by mass of a flocculant degradation component, 1-3 parts by mass of a surface active component and 15-20 parts by mass of a stone powder inorganic cementing component, the flocculating agent degradation component is a NaOH or KOH solution with the molar concentration of 2 mol / L to 5 mol / L; the surface active component is lauryl sodium sulfate or octylphenol polyoxyethylene ether with the molar concentration of 0.01 mol / L to 0.1 mol / L; the stone powder inorganic cementing component is a solution prepared from sodium silicate with the modulus being 1.0-1.5, superfine slag powder with the specific surface area being larger than or equal to 600 m < 2 > / kg, the activity index being larger than or equal to 120% and the fineness D90 being smaller than 10 microns and water according to the mass ratio of (3-5): (0.5-1): (8-10). The rock forming agent is utilized to fully excite the activity of the stone powder, the stone powder is used as a cementing material to prepare the recycled aggregate, the particle morphology of the recycled aggregate is more excellent than that of traditional machine-made aggregate due to the fact that the stone powder is coagulated, hardened and formed in the agglomeration process, the firmness of the recycled aggregate is smaller than or equal to 8.0%, and the single-stage maximum crushing index is smaller than or equal to 25%.

The invention provides injection ferrite magnetic powder, a preparation method, an injection ferrite material and application, the chemical formula of the injection ferrite magnetic powder is Sr < 1-x-y > LaxCayFe < 12-z > CozO19, the D50 size is 1.5-2.5 [mu] m, and the average length-diameter ratio L / D is 1.2-3.0; wherein 0 lt; x is less than or equal to 0.4, 0lt; y is less than or equal to 0.4, 0lt; z < = 0.25, 1.3 < = x / z < = 1.6. The injection ferrite magnetic powder provided by the invention not only has relatively large particle size, but also has good particle morphology due to the average length-diameter ratio L / D of 1.2-3.0, so that the injection ferrite magnetic powder has relatively excellent flowability; in addition, due to doping of La and Co, the injection ferrite magnetic powder also has excellent magnetic performance.