30results about How to "Does not dissolve" patented technology

The present invention provides a high-voltage lithium cobaltate positive electrode material, which is a compound structure of a doped lithium cobaltate substrate and a surface coating layer, wherein the general formula of the doped lithium cobaltate substrate is Li1+zCo1-x-yMaxMbyO2, x is more than or equal to 0 and is less than or equal to 0.01, y is more than or equal to 0 and is less than or equal to 0.01, z is more than or equal to -0.05 and is less than or equal to 0.08, Ma is a doped element with unchanged valence, and is at least one selected from Al, Ga, Hf, Mg, Sn, Zn and Zr, Mb is adoped valence-changing element, and is at least one selected from Ni, Mn, V, Mo, Nb, Cu, Fe, In, W and Cr, and the surface coating layer is a high-voltage (more than 4.5 V) positive electrode material. According to the present invention, the element with unchanged valence is doped through substitution, such that the layered structure distortion caused by lithium removing can be minimized; the valence-changing element is subjected to gap doping, such that the Co<3+> oxidation is blended and delayed during the charging; and the surface coating layer has the stable structure at the voltage of more than 4.5 V, can separate the electrolytic solution from the lithium cobaltate substrate, can reduce the side reaction between the electrolytic solution and the lithium cobaltate substrate, can suppress the dissolution of the transition metal, and further can provide electrochemical energy.

The invention provides a preparation method of electromagnetic composite hollow microspheres, relates to a preparation method of a composite hollow material and aims to solve the problems of poor conductivity, high density and high falling possibility of magnetic particles of the existing composite hollow material. The preparation method comprises the following steps: 1, preparing polystyrene microspheres; 2, dispersing the polystyrene microspheres in concentrated sulfuric acid, and sulfonating; 3, preparing a magnetic Fe3O4 nano particle suspension; 4, adding the sulfonic-group-containing SPS microspheres and the Fe3O4 nano particle suspension into a water solution; 5, adding ethanol and ammonia water, and dropwisely adding ethyl orthosilicate; 6, adding into a PVP-containing ethanol solution, and stirring; and 7, mixing an aniline solution with the PVP modified magnetic microspheres, dropwisely adding ammonium persulfate, drying, adding N,N-dimethylformamide, and soaking. For the prepared hollow microspheres, the conductivity is 0.01-1.0 S/cm, the density is low, and the magnetic particles are less prone to fall; and the hollow microspheres are mainly used in the fields of light-weight electromagnetic materials, photonic crystals, wave-absorbing materials and the like.

The invention relates to an electrochemical battery and a manufacture method thereof. The electrochemical battery using a small-size exterior package container discharges on high current. The electrochemical battery is composed of the exterior container, a battery core (7) and electrolyte, wherein the exterior container is composed of a seat (1) and a cover (6), the battery core (7) is mounted in the seat (1), the electrochemical battery comprises at least one lining membrane (2) and a connection terminal (4), the lining membrane (2) is formed on the inner side surface of the seat (1) and composed of an electronic pipe metal, the connection terminal (4) is arranged on the outer side surface of the seat (1) and electrically connected with the lining membrane (2), and a battery core lead (8) being an extension part of the battery core is welded with the lining membrane (2).

A precoated aluminum plate (1) has a precoated film (3) on an aluminum plate (2), wherein the precoated film includes molecular cross-linked base resin (4) and particles (5), wherein said precoated film (3) includes 50% or more of gel fraction and has a surface roughness of 0.25 micrometers or more in the arithmetic average (Ra).

The invention relates to a honeycomb film made of a biodegradable polymer which has biodegradation properties as an anti-adhesion membrane for preventing adhesion after an operation, is excellent in handling properties, and exhibits a satisfactory adhesion preventive effect stably over a desired period of time, and to a production process of the same. Above all, the invention provides an anti-adhesion membrane of a honeycomb film made of polylactic acid as a biodegradable polymer and a phospholipid and a production process of the same.

Disclosed is an oxide- and/or nitride-based carrier for an electrode catalyst, which is used for an electrode of a solid polymer fuel cell (PEFC). The carrier for an electrode catalyst is characterized by being composed of a fused body of primary particles of oxides of one or more metals selected from among rare earth elements, alkaline earth elements, transition metals, niobium, bismuth, tin, antimony, zirconium, molybdenum, indium, tantalum and tungsten. The carrier for an electrode catalyst is also characterized in that at least 80% of the primary particles of metal oxides having a size of 5-100 nm are fused and bonded together, thereby forming chain-like or tufted structures each of which is composed of 5 or more of the primary particles.

The invention relates to the technical field of mouthwash bottles, in particular to a sodium bicarbonate mouthwash bottle which comprises a containing bottle body. A threaded water pouring pipe whichis vertically arranged is integrally formed at the top end of the containing bottle body, a sealing cover is in threaded connection with the threaded water pouring pipe, a vertical connecting rod which is vertically arranged is arranged at the central position of the top wall of an annular threaded groove, and an annular groove is formed in the portion close to the top end of a rod body of the vertical connecting rod. Two mutually symmetrical inverted puncture bodies are integrally formed at the bottom end of the vertical connecting rod, a sealing separation membrane is arranged on the portionclose to the bottom end of the rod body of the vertical connecting rod, and left and right mutually symmetrical suspension hanging rings are also integrally formed on the portions close to the top end of the bottle body of the containing bottle body. A user can carry out a large number of sodium bicarbonate mouthwash bottles to go out, instant assembly and use are realized, and convenience is brought to the user.

Characters of the invention are that LiFePO₄ prepared through method of high temperature solid phase is olivine type structured active material of battery; the anode material of lithium ion battery in use for miner's lamp gives full play to features of simple preparing technique, low cost, high safety performance and environment friendly. With LiFePO₄ being as anode material and packed by aluminum-plastic, lithium ion battery for miner's lamp can pass each security testing. The material possesses foreground applicable to anode material of lithium ion battery in use for miner's lamp.

The invention provides threaded hole protection glue and a preparation method and application thereof. The threaded hole protection glue is prepared from the following components in percentage by mass: 15 to 20 percent of 2-acrylamide-2-methylpropanesulfonic acid, 16 to 23 percent of amide monomer, 15 to 20 percent of acrylate, 5 to 8 percent of trehalose, 10 to 20 percent of transparent powder, 0.5 to 2 percent of fumed silica and 2 to 3 percent of initiator. The preparation method comprises the following steps: mixing 2-acrylamide-2-methylpropanesulfonic acid, trehalose and water to obtain a mixture A; mixing the mixture A, fumed silica and transparent powder to obtain a mixture B; then mixing the mixture B, an amide monomer and acrylate to obtain a mixture C; and mixing the mixture C with an initiator to obtain the threaded hole protection glue. The threaded hole protection glue provided by the invention is resistant to high temperature, odorless, non-toxic, environment-friendly and safe, and can meet the processing requirements of surface treatment of structural parts of precise electronic products.