311results about How to "Improve structural stability" patented technology

An expandable interfusion cage comprising a cage body and a spacer. The cage body includes a seat part which is pierced by an orifice and a branch part which defines therein an inside space and has a plurality of elongate branches integrally formed at their proximal ends with the seat part. An opening is defined between two adjoining branches to communicate with the inside space. The spacer is movably assembled in the inside space of the cage body to expand the cage body radially outward. Inward projections are formed at distal ends, respectively, of the branches to project radially inward toward an axis of the cage body. The inside space of the cage body has substantially a circular or polygonal sectional shape. The spacer is engaged with the inward projections of the branches while expanding the cage body.

A radio controlled model rotorcraft implemented with features improving ease of flight and flight performance by increasing structural stability, increasing rotorcraft visibility and orientation awareness through the use of multifunctioning, configurable, and aesthetically pleasing components, while also increasing resistance to damage from crashes through use of impact and vibration absorbing components.

A device includes a first integrated circuit substrate including a plurality of first metal layers interconnected by first vias and a second integrated circuit substrate on the first integrated circuit substrate and including second metal layers interconnected by second vias. An insulation layer is disposed between the first and second substrates and a connection region is disposed in the insulation layer and electrically connects a first one of the first metal layers to a first one of the second metal layers. The device further includes a bonding pad on the second substrate and a through via extending from the bonding pad and into the second to contact a second one of the second metal layers. The through via is positioned so as to not overlap at least one of the first vias, the second vias and the connection region. Methods of fabricating such device are also described.

The invention discloses a modified spinel lithium manganate material used in anode material of lithium secondary battery, the lithium manganate is a kind of doped lithium manganate LiaMn2-bXbO4 with other metallic element X, wherein X is at least one element of chroumium, gallium, magnesium, titanium, cuprum, zincum, 0.97 <= a <= 1.07, 0 <= b <= 0.1; and the surface of the said doped lithium manganate LiaMn2-bXbO4 is provided with a coat which contains at least one kind of boron-lithium composite oxides, cobalt-lithium composite oxides, vanadium-lithium composite oxides or carbon layer. The invention also discloses a preparing method for the said material and the lithium secondary battery using the said material as anode material. The invention provided modified spinel lithium manganate material has relative good high rate deep discharge capacity in normal temperature or high temperature, in mean time, the preparing method is easy for control and operation and industrialisation, and production cost thereof is low.

A vertical memory device includes a substrate including a cell region and a peripheral circuit region, the peripheral circuit region including a gate structure comprising a transistor, a plurality of channels on the cell region, each of the channels extending in a first direction that is vertical with respect to a top surface of the substrate, a plurality of gate lines stacked in the first direction and spaced apart from each other, the gate lines surrounding outer sidewalls of the channels, and a blocking structure between the cell region and the peripheral circuit region, wherein a height of the blocking structure is greater than a height of the gate structure in the peripheral region.

The invention relates to a new carbon cathode, which comprises: graphite powder and the graphitized middle phase cover layer, wherein it is characterized in that: the average thickness of middle layer is 0.5-8 mum. And the invention also discloses a relative preparation, which comprises: (1) mixing 5-45% graphite powder and 95-55% pitch, adding the aggregation restrain agent at 0.5-5%, to polymerize at 380-480Deg. C; (2) separating; (3) drying; (4) carbonizing; (5) graphitizing. The invention covers graphitized middle phase layer over the graphite, to obtain better property, and it can restrain the solid particle aggregation, to control the diameter.

This invention relates to an improvement in battery packs. The present invention resides in a combination of an electric battery pack and a apparatus for making an electrical connection to the battery without involving the spot welding process. The present assembly method enables terminal blocks containing multiple battery packs joint in series having a “U-turn” configuration without external electrical connection. Any two battery packs are firmly locked together through the pressure plates (200) without being electrically connected together. The present embodiment uses two separate nickel or other conductive material plated copper sheets (113a or 113b) that are embedded between the battery cell holder (114a, 114b) and the silicone rubber pressure sheet (112a, 112b). The first end portion block of battery packs supported by an end pressure plate (300) can be connected together to the second end portion of the block battery packs by using a modified nickel or other conductive material plated copper sheet (113) that enable the two battery packs to be connected internally, thus, making the “U-turn” configuration possible. This method is one of the most cost efficient ways to connect internally, to avoid using any external wires or circuits, which eventually maintain the internal resistance of each of the battery packs.

The invention belongs to the field of lithium ion cell and specifically relates to a LiNi0.6-xCo0.2Mn0.2AlxO2-yFy positive electrode material for the lithium ion cell and a preparation method thereof. X is more than 0 and y is less than or equal to 0.05. The positive electrode material is used for overcoming the defect of poor electrochemical performance of the Ni-Co lithium manganate ternary positive electrode material. According to the invention, a minute quantity of aluminum and fluorine are doped, so that the positive electrode material for the lithium ion cell has higher specific discharge capacity and excellent cycle performance; under a room temperature environment, when the voltage scope is 2.7-4.3V and the constant current charge-discharge multiplying power is 0.5C, the specific discharge capacity of the material at the first time can reach 187.9mAh g<-1>, and after circulation for 20 times, the specific discharge capacity still can reach 192.1mAh g1 and the capacity retention ratio reaches up to 102.2%; when the voltage scope is increased to 2.7-4.5V and the constant current charge-discharge multiplying power is 0.5C, the initial specific discharge capacity of the material can reach 225.8mAh g<-1>, and after circulation for 20 times, the specific discharge capacity still can reach 190.2mAh g<-1> and the capacity retention ratio reaches up to 84.2%. The preparation technique of the material is simple and controllable, the product purity is high, the chemical uniformity is high, the crystal quality is high, the product grain is small and the size distribution is uniform.

The invention discloses a graphene-based nano-pore monomolecular sensor and a medium identification method thereof. In the graphene-based nano-pore monomolecular sensor, conductive single-layer or multi-layer graphene is used as a radial electrode; the graphene electrode is clamped inside an insulation layer, so the structural strength is enhanced; a nano-pore channel is formed on the insulation layer; the cathode and the anode of the radial electrode are located at both ends of the nano-pore channel in the radial direction respectively; and an axial electrode is arranged along the axial direction of the nano-pore channel. During medium identification, both ends of the nano pore are connected with a fluid pool unit, and voltage is exerted between the axial electrode and the radial electrode respectively; and when a medium passes through the nano pore, the medium in the channel is identified by measuring weak change of axial and radial current. The sensor has a simple structure; meanwhile, by comprehensive analysis of the radial current and the axial current, higher sensitivity and identification rate can be obtained; moreover, due to analysis, the pore-passing medium can be detected and the pore-passing state is analyzed according to the tested medium; therefore, the property of the medium can be analyzed.

The invention discloses a composite material with silicon monoxide coated with a nitrogen doping carbon material. The silicon monoxide is used as a core; the nitrogen doping carbon material is used for coating the silicon monoxide to form a shell-core structure, wherein the nitrogen doping carbon material is a mixture of nitrogen doping graphene and nitrogen doping oxidized asphalt. The composite material with the silicon monoxide coated with the nitrogen doping carbon material is prepared from the following ingredients in percentage by weight: 70 to 90 percent of silicon monoxide, 5 to 20 percent of nitrogen doping graphene and 3 to 15 percent of nitrogen doping oxidized asphalt. The invention also discloses a preparation method of the composite material with silicon monoxide coated with the nitrogen doping carbon material. The silicon monoxide is used as the core; the nitrogen doping carbon material is used for coating the silicon monoxide to form the shell-core structure; the electron conductivity of a negative electrode material is improved; meanwhile, the volume change of the negative electrode material in the lithium embedding removal process can be buffered; the structure stability of the material in the circulation process is improved; the advantages of high reversible volume and good circulation performance are realized.

The invention discloses a high-nickel positive electrode material for a non-aqueous electrolyte secondary battery and a preparation method for the high-nickel positive electrode material. The high-nickel positive electrode material is represented by a general formula: Li<w>Ni<1-x-y>Co<x>Mn<y>M<z>O<2>, wherein an average particle diameter D50 is 8-15 [mu]m, and is formed by the small particle sizeD50 of 2-5 [mu]m and the small particle size D50 of 8-18 [mu]m, the Co content (metal molar ratio, SC) of the small particle diameter is higher than the Co content (metal molar ratio, LC) of the largeparticle diameter, and the Co concentration ratio (SC/LC) is preferably from the range of 1.2-2. According to the invention, the material structure of the high-nickel positive electrode material is stabilized through element doping and coating, and the crystal structure of the material is stabilized by increasing the cobalt content in the small particle size, and the cycle performance of the material is improved; and finally, the small particle size and the large particle size are mixed according to different proportions, so that the tap density of the positive electrode material and the compaction density of a pole piece are improved.

The invention relates to a low-loss stationary-phase coaxial radio-frequency cable and a manufacturing process thereof. A plurality of layers of microporous polytetrafluoroethylene film insulating layers are wrapped outside the core of a silver-plated copper alloy wire; a silver-plated copper bandlet inner shield is wrapped outside the plurality of microporous polytetrafluoroethylene film insulating layers; a layer of silver-plated copper wire outer conductor is woven outside the silver-plated copper bandlet inner shield; and a layer of fluorinated ethylene propylene jacket is wrapped outside the silver-plated copper wire outer conductor by pressing. The process comprises the following steps of: 1, plating silver on a copper alloy wire in-core conductor; 2, wrapping the microporous polytetrafluoroethylene film insulating layers; 3, wrapping the silver-plated copper bandlet inner shield; 4, weaving the silver-plated copper wire outer conductor; and 5, wrapping the fluorinated ethylene propylene jacket by pressing. The process has the characteristics of reducing the dielectric constant of an insulating medium, reducing the attenuation of the cable and guaranteeing the high shielding efficiency of the cable.

The invention discloses a steel latticed column combined-type tower crane infrastructure in a foundation pit. The steel latticed column combined-type tower crane infrastructure comprises the foundation pit and cast-in-place piles prefabricated at the bottom of the foundation pit, wherein the cast-in-place piles are sequentially connected with steel latticed columns, steel columns, bearing platforms and tower crane pre-embedded joint foundations from bottom to top, concrete core columns are arranged in the steel latticed columns, multiple in-pile longitudinal ribs forming a steel bar cage are arranged in the cast-in-place piles, the steel latticed columns are welded and fixed to the steel bar cage in the cast-in-place piles, detachable holding hoops are fastened to the sections, welded with the steel latticed columns, of the cast-in-place piles and are fixed through holding hoop bolts, the problems of large tower crane foundation construction difficulty and the like are solved by utilizing the characteristics of light weight, small material consumption, convenient construction operation and the like of an assembled hollow zigzag bearing platform, and the steel latticed column combined-type tower crane infrastructure has better technical and economic benefits. The sections, connected with a steel latticework, of the piles are reinforced by adopting post-mounted detachable holding hoops, and the structural stability is increased. The prefabricated concrete core columns are post-mounted in the steel latticed columns to increase rigidity.

The invention relates to a preparation method and application of a carbon coated titanium phosphate sodium material. The representing method of the material is NaTi2(PO4)3/C. By combining in-situ carbon coating and a sol gel method, the carbon coated titanium phosphate sodium material with uniformly-distributed particles and the nanoscale is prepared, and the material is adopted as a negative electrode in a lithium ion battery, and has the good electrochemical capacity. Compared with other negative electrode materials, the material has the advantages of being high in ion conductivity, safe, environmentally friendly, low in price and stable in electrochemical performance, and has the wide application prospect in the technology of high-performance power batteries and electrochemical energy storage batteries.

The invention belongs to the technical field of catalyst preparation, and particularly relates to a mesoporous and microporous MFI type nano molecular sieve with flaky pastry-shaped morphology and a preparation method and application thereof. The specific synthesis method is as follows: silicon source, aluminium source, mesoporous template, microporous template and water are mixed according to a proportion, the mixture is put into a reaction kettle and crystallized, the crystallized product is washed, dried and roasted and undergoes ion exchange, and thereby the mesoporous and microporous MFItype nano molecular sieve is obtained. The invention adopts Bola type tetra-head-group quaternary ammonium surfactant as the mesoporous template and tetrapropylammonium hydroxide as the microporous template, the guiding microporous structure can be assumed as a column, preventing the structural collapse of the roasted molecular sieve, consequently, the structural stability of the molecular sieve is remarkably enhanced, and the degree of crystallinity is high; the introduction of mesopores shortens the delivery path of micropores within unit volume, and decreases the mass transfer resistance ofmacromolecular catalytic reaction; and moreover, when applied in alkylation reaction (such as the heterogeneous reaction between sym-trimethylbenzene and phenylcarbinol), the mesoporous and microporous MFI type nanoscale molecular sieve has a good catalytic effect.

The invention relates to a composite nanocapsule phase-change material and a preparation method thereof. The material is a nanocapsule which takes oil-phase paraffin as a core and a polymethyl methacrylate and silica composite material as a shell, wherein the primary particle size of the nanocapsule is 50 to 150 nm and the average particle size of nanocapsule is 50 to 400 nm. The polymethyl methacrylate has high cladding efficiency and a thick cladding shell layer is favorable for improving the heat stability and the structure stability of the material; the silica has the characteristics of high structural strength, heat stability, mechanical stability, chemical stability, high heat conductivity and the like and remedies the defect that the polymethyl methacrylate has relatively low stability, and the polymethyl methacrylate remedies the defects that the silica has low elasticity and compactness, so stability improvement is promoted; the nanocapsule has small particle size and large specific surface area, so the heat conduction efficiency can be further improved, the damage of the capsule structure caused by large volume change in a phase change process is reduced, and the stability is improved.

The invention belongs to the field of lithium ion battery preparation, and particularly relates to a lithium ion battery piezoelectric positive electrode composite pole piece and a lithium ion battery application thereof. The positive electrode compound pole piece consists of a positive electrode pole piece and a piezoelectric ceramic composite layer, and the positive electrode piezoelectric composite pole piece is prepared through electric field polarization treatment. The piezoelectric positive electrode composite pole piece disclosed by the invention is applied to the lithium ion battery; when the battery pole piece is extruded, the battery discharges so as to improve the safety performance of the battery; meanwhile, the transmission rate of lithium ions in the lithium ion charging and discharging process of the battery is improved; and the fast charge capability and the multiplying power performance of the lithium ion battery can be improved.

A fire resistant panel includes a first sheet and a second sheet of non-combustible material positioned in parallel spaced relation to define a sandwich structure with a central cavity. The sandwich structure has a top, a bottom and opposed ends. Cement posts are positioned in spaced relation in the central cavity, in a substantially vertical orientation extending between the top and the bottom. A cement beam is positioned along the top of the central cavity, supported by the cement posts. Rigid foam insulation fills a remainder of the central cavity, with the cement posts and cement beam providing enhanced structural stability to the sandwich structure.

The invention discloses a metal base subjected to surface treatment and a preparation method thereof. The metal is aluminum or an aluminum alloy. The metal base comprises a metal base and a micro-arc oxidation film layer adhering to at least one part of the surface of the metal base. The surface of the micro-arc oxidation film layer is provided with first etch pits. The invention also provides a metal-resin compound. The metal is aluminum or an aluminum alloy. The metal-resin compound comprises the metal base subjected to surface treatment and a resin layer coating at least one part of the surface of the metal base, wherein a part of resin in the resin layer extends downward and fills the etch pits of the metal base. In the metal-resin compound, bonding strength between the resin and the metal base is high and the resin layer does not easily fall from the metal base surface so that the metal-resin compound has high structural stability, satisfies high structural stability requirements of a use field and can be used as an electronic product housing.

The invention discloses propylene glycol amine derivate cationic liposome nano particles and a preparation method thereof. The nano particles are iodated 2,3-dialkoxy-1-(N,N,N-trimethyl)propanaminium or bromized 2,3-dialkoxy-1-(N,N-dimethyl-N-(2-hydroxyethyl))propanaminium, wherein the alkoxy includes n-octyloxy, n-dodecyloxy, n-myristyloxy, n-hexadecyloxy and n-octadecyloxy. The propylene glycol amine derivatecationic liposome nano particles have the advantages of good structural stability, moderate particle size, narrow particle size distribution, moderate surface charges, low preparation cost and the like, can meet the basic requirements of a DNA (deoxyribonucleic acid) transfer carrier, and have potential in combining and transferring gene medicines through electrostatic effect.

The invention discloses a method for preparing a coaxially-composite nano material by using a carbon nano tube as a core. The composite nano material using the carbon nano tube as the core comprises the carbon nano tube, manganese oxide, and amorphous carbon from the inside to the outside in sequence, that is to say, the amorphous carbon/manganese oxides/the carbon nano tube (C/MnOx/CNTs) coaxially compound the nano material, wherein the manganese oxides are MnO2, Mn3O4 and MnO, and are abbreviated to MnOx. The method uses the carbon nano tube as the core to prepare the one-dimensional amorphous carbon/manganese oxides/the carbon nano tube (C/MnOx/CNTs) coaxially-compounded nano material, so that the preparation technology is simple, the device requirement is low, and the prepared material is large in specific surface area, and high in stability, capacity and conductivity, and has huge application potentiality in the field of lithium secondary battery negative electrode materials.

The invention provides a two-dimensional reticular hairline nanometer fiber material used for air filtration and a preparation method of the material. The preparation method is characterized in that a high-molecular-weight polymer is selected, a polymer solution low in mass concentration is prepared, then in the electrostatic spraying process, a spinning nozzle is vibrated in situ by using external force, and the generation of charged droplets is promoted; meanwhile, by regulating the vapor concentration of a solvent in a closed spinning environment, the droplets form the two-dimensional reticular hairline nanometer fiber air filtration material on the surface of a receiving substrate after phase separation, wherein a punctiform adhesion structure is formed between the material and the substrate. The material is continuously and seamlessly stacked, the average diameter of the fibers in the net is 3-50 nm, meshes have a stable Steiner minimal-tree structure, the average mesh diameter is 10-500 nm, the porosity is equal to or larger than 75%, the filtering efficiency of the material to the particulate matter with the partical size of 0.01-5 micrometers is larger than 99.999%, and the resistance pressure drop is smaller than 50 Pa. the preparation process is simple, few materials are limited, and the reticular hairline nanometer fiber air filtration material has a tiny mesh structure and good channel connectivity, and shows a great application prospect in the field of air filtration.

The invention relates to an anti-seismic type stereoscopic underground parking garage. The anti-seismic type stereoscopic underground parking garage comprises a garage entering and exiting safety room, a multilayered stereoscopic parking space and a car parking and getting execution system, wherein the car parking and getting execution system is composed of a hoisting system, a rotary platform and a car transportation device; the car transportation device is movably arranged on the rotary platform; the multilayered stereoscopic parking space is composed of a steel-structured framework; each layer of space is provided with a plurality of parking stalls; the steel-structured framework is externally provided with a continuous anti-seismic wall formed by a static-pressure planting pile; the hoisting system is a machine-room-free traction system; the car transportation device comprises a driving device, a clamping wheel device and a combing tooth device. The continuous anti-seismic wall is formed by setting the static-pressure planting pile, so that the structural stability and the anti-seismic function of the underground parking garage can be extremely improved; temporary setting is not needed in a construction process, no vibration and no noises are caused, bad influences on the environments are not caused and a construction speed is rapid; a car fixing manner combining the double-drive car transportation device, combing teeth and clamping wheel mechanisms is adopted, so that the car parking and getting efficiency and the action accuracy can be greatly improved.

A photoalignment material includes a photoalignment polymer having a photosensitive portion represented by the following Chemical Formula 1,

The invention provides a battery replacing robot. The battery replacing robot comprises a hanging bracket, a moving bracket and a pickup part; the moving bracket is movably arranged on the hanging bracket in the first horizontal direction and penetrates through the hanging bracket in the second horizontal direction, and a preset angle is formed between the first horizontal direction and the second horizontal direction; and the pickup part is movably hung on the moving bracket in the second horizontal direction, and comprises a lifting appliance, and the height of the lifting appliance is adjustable. According to the battery replacing robot, a battery box to be replaced only needs to be lifted by a certain height and moves in the width direction of an electric vehicle with the battery box to be replaced, the situation that in the prior art, the bottom of the battery box needs to be higher than the electric vehicle for rotary battery replacing is avoided, and therefore the overall height of the battery replacing robot is reduced, and the occupied space is smaller; and meanwhile, the pickup part is arranged on the moving bracket, and the moving bracket is movably embedded in a portal frame, so that the weight of the battery box in the moving process is borne by the moving bracket and the hanging bracket at the same time, better rigidity is achieved, and the structural stability is higher.

The invention relates to a NiS2 mesoporous nanosphere material and a preparation method thereof. The material can serve as a long-life and high-rate sodium-ion battery negative electrode active material, a plurality of NiS2 subunit nano-particles are regularly stacked to form mesoporous nanosphere structures with uniform shapes, mesopores are formed among the NiS2 subunit nano-particles, the sizes of the mesopores are mainly distributed within the range of 3-4 nanometers, mesoporous nanospheres are free from agglomeration and good in dispersity, the diameters of the NiS2 subunit nano-particles are 150-200 nanometers, and the specific surface area of each mesoporous nanosphere is 49.1m<2>g<1>. The material has the advantages that the NiS2 mesoporous nanosphere material is successfully synthesized and shows excellent high-rate performance, cycling stability and long service life when serving as the sodium-ion battery negative electrode active material, and the material is a potential applied material for a high-power and long-life sodium-ion battery.

The invention relates to the technical field of fabrication of a lithium ion secondary battery, and provides a high-voltage and wide-temperature amplitude polymer lithium battery for a 3C digital camera and a fabrication method of the polymer lithium battery. The battery comprises a positive plate, a negative plate, a diaphragm, an electrolyte, a tab and a battery shell, wherein the positive plate comprises a positive active substance, a conductive agent, a binding agent and an aluminum foil, and the negative plate comprises artificial graphite, a conductive agent, a binding agent and a copper coil. A battery paste is synthesized by a high-viscosity stirring process, the paste is monitored by using a Turbiscan paste stability tester, the paste synthesis time is effectively shortened, paste dispersion is promoted, and the paste stability is improved. Meanwhile, with the combination of heating and formation, the energy density of the fabricated polymer battery is improved, the formation time of the polymer lithium ion battery is also greatly shortened, and the production efficiency of a factory is improved.

The invention discloses a preparation method of a composite negative electrode material for a lithium ion battery. The method is characterized in that the m-Si@G composite negative electrode material is prepared through the combination of a surface modification method and a hydrothermal reduction method. The method specifically includes the following steps of firstly, conducting surface modification on nanometer silicon, adding the nanometer silicon together with a reducing agent to dispersion liquid of graphite oxide, conducting hydrothermal reaction after dispersion is uniform, shifting into a water solution to conduct ion exchange after suction filtration is conducted, and obtaining the composite negative electrode material after suction filtration and freeze drying are conducted. The prepared m-Si@G composite negative electrode material is stable in structure and excellent in circulating performance and rate capability.

The invention discloses an o-phenylphenol catalyst prepared by dehydrogenating cyclohexanone dimer, and a preparation method thereof. A carrier of the catalyst is alumina modified with rare earth oxide, and the catalyst consists of alkali oxide and precious metal which are loaded on the carrier. The invention has the most remarkable characteristic of using the alumina modified with rare earth oxide as the carrier, and another remarkable characteristic of the invention is the preparation method of the catalyst, and the method adopts an isopyknic fractional-step impregnation process, avoids competitive adsorption among components, increases the bonding strength between the components and the carrier, and the like. The catalyst has the advantages of high selectivity to o-phenylphenol, few byproducts, simple preparation process, good stability and capability of simple activation and regeneration after coking deactivation, and is an excellent high-selectivity catalyst with industrial practical value.

The invention relates to a soil-reinforcement component used for ecological restoration of steep rock slopes. The soil-reinforcement component comprises an irrigation system, soil-reinforcement bricksand a cover plate that are arranged from bottom to top along a slope, wherein first and second grooves of two adjacent soil-reinforcement bricks correspond to each other to form first cavities and second cavities that are fixed on the slope through anchoring assemblies; in the irrigation system, water collection troughs are arranged on the flat bottom on the top of the slope or the flat bottom onthe bottom of the slope, a water pipe is arranged in the first cavities, and a water pump provides power to perform underground infiltration irrigation for the slope vegetation; planting holes are distributed in the surface of the cover plate, and pins are arranged perpendicular to the surface of the cover plate and correspondingly inserted into second through holes to fix the cover plate above the slope. The invention seals a certain amount of soil on the surface of the rock slope through the soil-reinforcement bricks. The first cavities on the soil-reinforcement bricks are combined with theirrigation system, and the second cavities are combined with the cover plate, which realizes the expansion of soil space on the surface of the rock slope, and can accommodate the growth of more kindsof plants. The invention has the advantages of a flexible structure and strong adaptability.