45 results about "Structural transition" patented technology

The present invention relates to a method of preparing a positive active material for a rechargeable lithium battery, a positive active material prepared according to the method, and a rechargeable lithium battery including the same. This manufacturing method includes preparing a complex salt solution by mixing a solution including a metal source material and a chelating agent, disposing the complex salt on the surface of a lithium-included compound by adding a lithium-included compound to the complex salt solution, adding a solution including a fluorine source material to the solution including a lithium-included compound with the complex salt on the surface, and heat-treating the mixture. The present invention provides a simple method of economically preparing a positive active material in which structural transition on the surface is prevented and securing a uniform coating layer. In addition, the positive active material can have improved charge and discharge characteristics, cycle life characteristic, and rate characteristic. It also has improved ion conductivity, and accordingly can improve mobility of lithium ions in an electrolyte and thereby improve discharge potential of a battery. Furthermore, the positive active material can decrease the amount of a conductive material and increase density of a substrate.

The purpose of this invention is to provide a method for manufacturing capacitors free of polarization fatigue even when the treatment is performed at a low temperature.Amorphous layer 32 made of lead zirconate titanate and containing excess lead is formed on lower electrode 13 made of iridium. The amorphous layer is crystallized by a heat treatment to form PZT film 14. Structural transition layer 33 containing excess Pb formed on the surface of PZT film 14 during the aforementioned crystallization is removed by means of dry etching. In this way, a PZT capacitor is obtained.

The present invention provides a preparation method of gradate nanostructure transition metal oxide by a two phase solvent soft interface method which comprises the steps of that: metal salt or metal oxide is added into water, and the pH value of the solution is adjusted by acid or base, then the corresponding reactant precursor is obtained; another water insoluble organic solvent is added into the solution, and the whole mixture is subjected to solvothermal treatment, and then the solid product is obtained by pumping filter, finally, the corresponding gradate nanostructure transition metal oxide is obtained after scrubbing and drying. The transition metal oxide of the present invention has excellent gradate structure, for example, titanium dioxide has a main structure of micron order spheroidal particle which is formed by the ordered array of a plurality of nanorods. The titanium dioxide of the present invention has a high visible light photocatalysis activity, a simple synthetic route, an easy technology, available raw material, low cost and high yield, and is adapted to mass production.

This invention relates to the controlled two-dimensional structural transition of a dipole monolayer at a metal, semi-conducting or insulating interface. The dipole monolayer consists of objects / molecules with a permanent electric dipole moment. A transition between the structures of the molecular layer can be performed locally and reversibly by applying an electrical field and the structures / patterns can be reversibly switched many times between two different structures / states. Both of the two structures, the ordered and the disordered structures, are intrinsically stable without the presence of the switching electrical field. This controlled switch of the local layer structure can be used to change layer properties (i.e., mechanical, electrical, optical properties). The controlled reversible modifications of the dipole monolayer structures are usable as bit assignments in data storage applications for example.

The invention discloses a transition plate structure suitable for independent teleoperation of a first wall of a divertor. The transition plate structure is formed by welding a protective armor and asupport plate; tungsten is used as a protective armor material; chromium zirconium copper is used as a support plate material; the transition plate structure is connected with a first wall support structure through two connecting bolts; a water inlet / outlet pipe of the first wall structure and divertor first wall structure connecting bolts are located on the back surface of the transition plate; amultifunctional mechanical arm can enter a vacuum chamber from an upper window and a middle window; and the transition plate is detached, and a first wall structure is independently removed or installed. According to the invention, the first wall structure of the divertor can be automatically and quickly assembled or disassembled with high precision in a nuclear-related environment; the installation precision of the first wall structure of the divertor is improved, and installation steps are simplified; the first wall structure only needs to be independently maintained through the middle window or the upper window, so material waste is reduced; and the structure has the advantages of money saving, time saving, high efficiency and high precision.

The invention discloses a manufacturing method for a composite steel column of a transition section of a tower crown of a super high-rise building. The composite steel column comprises a steel columnwhich is vertically arranged, upper brackets and lower brackets, wherein the upper brackets and the lower brackets are arranged on the steel column at intervals, and the steel column is sequentially composed of an orthogonal H-shaped steel column section, a connecting H-shaped steel column section, an oblique-crossing H-shaped steel column section and a rhombic steel column section from bottom totop; center lines of webs of the orthogonal H-shaped steel column section, the connecting H-shaped steel column section and the oblique-crossing H-shaped steel column section are located in the same straight line; the lower brackets are arranged on the connecting H-shaped steel column section; and a left flange plate and a right flange plate are correspondingly arranged between an upper flange plate and a lower flange plate of the upper end of the oblique-crossing H-shaped steel column section, the two sides of the left flange plate and the right flange plate are correspondingly and fixedly connected with the edge of the lower flange plate and the edge of the corresponding upper flange plate, so as to close the left and right sides of the upper flange plate and the lower flange plate, andan inclination angle of the rhombic steel column section corresponds to that of the tower crown. According to the manufactured composite steel column, the transition from the main structure of a towerbuilding to the tower crown structure can be effectively achieved.

Protein-based photovoltaic cells and the manufacture and use of protein-based photovoltaic cells are described. In one embodiment, bacteriorhodopsin from Halobacterium salinarum, which undergoes structural transitions when irradiated with a given wavelength of light, is used as the protein in the protein-based photovoltaic cells. In another embodiment, mutant bacteriorhodopsin from H. salinarum is used. Exposure of the protein to sunlight causes proton transfer across a membrane resulting in the generation of an electrical charge. The protein can be oriented and / or layered on a substrate and modified by mutation to enhance transmembrane proton transfer, covalent binding to a substrate and layering. The protein-based photovoltaic cells sequentially or simultaneously generate hydrogen gas from water or salt, which also can be harnessed to produce electricity.

The invention provides an anti-abrasion and anti-breakage long-service-life drain valve spring. The anti-abrasion and anti-breakage long-service-life drain valve spring comprises a main body structure and supporting rings at the two ends of the main body structure. The main body structure comprises a working ring and transition rings at the two ends of the working ring, the inner diameter of the working ring is larger than the outer diameter of the transition rings, and after the spring is pressed, even if the supporting ring retracts into the main body structure, the transition rings do not make contact with the main body structure. By means of the anti-abrasion and anti-breakage long-service-life drain valve spring, the structure of the working ring of the spring is improved, the outer diameter of the transition rings is smaller than the inner diameter of the working ring, it is guaranteed that when the spring is compressed to the limiting position, steel wires do not interfere with one another, the steel wires do not make contact with one another when the whole spring works, and the fatigue life is greatly prolonged; and materials are selected from conventional spring steel materials, so that the cost is also greatly reduced.

The invention relates to a double-limb pier bent cap which comprises a bent cap body. Two longitudinally separated stand columns are arranged at the bottom of the bent cap and arranged on a bearing platform, and a foundation is arranged below the bearing platform. The bent cap can be of a common reinforced concrete structure or a prestressed concrete structure. The stand columns have reinforced concrete solid structures, the side length of the cross section of each stand column in the transverse direction of the bridge is larger than that of the cross section in the longitudinal direction of the bridge, the stand columns are divided into two independent stand columns in the longitudinal direction of the bridge to form double-limb piers, and the centers of the two stand columns correspond to the upper structure supports in position. The double-limb piers and a group of pile foundations composed of cast-in-situ bored piles are in structural transition through the bearing platform, and the two ends of the double-limb piers should be fixedly connected with the bent cap and the bearing platform respectively. The anti-bending rigidity of the structure in the bridge direction can be greatly reduced, the structural anti-seismic property objective is achieved, the construction cost is saved, the under-bridge driving view is enlarged, and the structure is safe, reliable, economical and attractive.

The invention discloses an ordinary still life transparent model. The surface of a structural transition place is provided with auxiliary structure lines, and the whole is transparent. Particularly, ordinary still life transparent models are divided to a jar-kind ordinary still life transparent model, a fruit-kind ordinary still life transparent model and a vegetable-kind ordinary still life transparent model. According to the ordinary still life transparent model of the invention, through the design of the auxiliary structure lines and the design of the transparent state, a sketch beginner can effectively master the inner structure, the outer structure, the space and the perspective law of an ordinary still life during a learning process.

The present invention provides a preparation method of gradate nanostructure transition metal oxide by a two phase solvent soft interface method which comprises the steps of that: metal salt or metal oxide is added into water, and the pH value of the solution is adjusted by acid or base, then the corresponding reactant precursor is obtained; another water insoluble organic solvent is added into the solution, and the whole mixture is subjected to solvothermal treatment, and then the solid product is obtained by pumping filter, finally, the corresponding gradate nanostructure transition metal oxide is obtained after scrubbing and drying. The transition metal oxide of the present invention has excellent gradate structure, for example, titanium dioxide has a main structure of micron order spheroidal particle which is formed by the ordered array of a plurality of nanorods. The titanium dioxide of the present invention has a high visible light photocatalysis activity, a simple synthetic route, an easy technology, available raw material, low cost and high yield, and is adapted to mass production.

The invention relates to a method for preparing multilayer core-shell structure transition metal oxide at one step. The method comprises the following steps: dissolving a transition metal salt with a solvent, and then adding an organic additive to obtain a precursor solution; atomizing the precursor solution with an atomizer, and feeding the precursor solution into a vertical tube furnace with carrier gas for pyrolysis to obtain the multilayer core-shell structure transition metal oxide material. By adopting the method, the synthesized transition metal oxide is uniform in components, and is controllable in appearance and shell quantity; a high-purity and high-crystallinity multilayer core-shell structure transition metal oxide can be prepared without any separate subsequent burning process. Compared with the conventional method, the method has the advantages of easiness in operation, short flow, high efficiency, high suitability and the like.

The invention discloses a method for manufacturing a combined steel column in the crown transition section of a super high-rise building. The combined steel column includes a vertically arranged steel column, upper corbels and lower corbels arranged on the steel column at intervals, and the steel column From bottom to top, it consists of orthogonal H-shaped steel column section, connecting H-shaped steel column section, oblique H-shaped steel column section and diamond-shaped steel column section; orthogonal H-shaped steel column section, connecting H-shaped steel column section and oblique H-shaped steel column section The center line of the web plate of the section is located on the same straight line; the lower corbel is set on the connecting H-shaped steel column section; the left and right flange plates are respectively arranged between the upper and lower flange plates at the upper end of the oblique H-shaped steel column section. Both sides of the flange plate and the right flange plate are fixedly connected with the edge of the lower flange plate and the corresponding edge of the upper flange plate to respectively close the left and right sides of the upper and lower flange plates, and the inclination angle of the diamond-shaped steel column section corresponds to the inclination angle of the tower crown. The fabricated composite steel column can effectively realize the transition from the main structure of the tower to the crown structure.