45results about How to "Relieve contraction" patented technology

The invention discloses a manufacturing method for a lithium ferric phosphate battery adopting a compound conductive agent. The manufacturing method comprises the following steps of: dissolving anode binder polyvinylidene fluoride in N-methyl pyrrolidone and stirring, thereby obtaining anode glue; adding a carbon nano-tube/conductive polymer compound material into the anode glue and scattering; adding anode active matter LiFePO4 and stirring, thereby obtaining anode slurry; uniformly coating the anode slurry on two surfaces of an aluminum foil, drying, and then rolling and slicing, thereby obtaining anode plates; uniformly mixing cathode active matter graphite, the carbon nano-tube/conductive polymer compound material, a cathode binder and de-ionized water, thereby obtaining cathode slurry; uniformly coating the cathode slurry on two surfaces of a copper foil, drying, and then rolling and slicing, thereby obtaining cathode slices; coiling, flatly pressing and banding, and then drying for 8 hours in vacuum at 65 DEG C; filling electrolyte into a dried battery; and forming an end product of the lithium ferric phosphate battery after filling the electrolyte. According to the manufacturing method provided by the invention, the capacity, multiplying power, circulation and safety property of the battery are greatly improved.

The invention belongs to the field of computer application, three-dimensional reconstruction and registration, and aims to process the deformation of large action of a three-dimensional target object. The technical scheme employed by the invention is that according to a global non-rigid registration and reconstruction method of a deformable object, n view models are assumed and are denoted by U1, U2 to Un. For any model p, Up={u[1]

, u[2]

,***, u[N]

} , N is the number of points of the model p, u[i]

=(x[i]

,y[i]

,z[i]

,1 ) is the homogeneous coordinates of a point u[i]

, for pair of adjacent models Up and U(p+1), for a last model Un, an adjacent model is U1, the initial mapping relation (shown in specification) among the models is found by humans or solving a corresponding relation algorithm, namely a corresponding point, then the non-rigid transformation Xp among the models is solved, Xp={X[1]

,X[2]

, ***, X[N]

}, and X[i]

is a 3*4 transformation matrix. The method is mainly applied to an occasion of processing the deformation of the large action of a three-dimensional target object.

The present invention relates to a hexagonal vanadium pentoxide nano-material as well as a preparation method and an application thereof. The vanadium pentoxide nano-material is hexagonal, and the thickness of each angle is about 100-300 nm. The preparation method comprises the following steps: using vanadium pentoxide powder, benzyl alcohol, and isopropanol as raw materials, preparing vanadium oxide collosol through reflux condensation and distillation concentration, mixing the collosol, ethanol and deionized water to obtain a vanadium pentoxide nano-material through a hydrothermal reaction and post sintering treatment. The prepared vanadium pentoxide nano-material is extremely suitable for an anode material of lithium-ion batteries. Compared with the prior art, the nano-material has the advantages of simple process, low manufacturing costs and excellent electrochemical performance and the like.

The embodiment of the invention provides a silicon-carbon composite material, which comprises an inner core and a carbon layer coated on the surface of the inner core, wherein the inner core comprisesa graphite skeleton, amorphous carbon filled in the graphite skeleton structure, and a silicon material uniformly distributed in the amorphous carbon, the silicon-carbon composite material only has apore structure with a pore diameter of less than or equal to 50nm inside, and a pore structure with the pore diameter of greater than 50nm does not exist. The silicon-carbon composite material is small in internal pore size, the contact area of the silicon material and electrolyte can be effectively reduced, side reactions are reduced, and the service life of a battery is prolonged; and meanwhile, the silicon material is uniformly dispersed around the graphite skeleton without agglomeration, so that the volume expansion and shrinkage of the silicon material can be effectively relieved by thegraphite skeleton, and the structural stability and energy density of the composite material are improved. The embodiment of the invention also provides a preparation method of the silicon-carbon composite material and a lithium ion battery containing the silicon-carbon composite material.

The invention discloses preparation and application of a nitrogen-doped composite planar metal lithium anode. The nitrogen-doped composite planar metal lithium anode is composed of a flat plate current collector, nitrogen-doped hollow carbon nanocages, adhesive active layers and metal lithium, wherein the nitrogen-doped hollow carbon nanocages and the adhesive active layers uniformly cover two sides of the planar metal current collector, and metal lithium exists in the nitrogen-doped hollow carbon nanocages. The nitrogen-doped composite planar metal lithium anode has the advantages that the existence of the hollow carbon nanocages with high specific surface area effectively reduces the overpotential in during the nucleation and deposition of lithium metal, and the doping of nitrogen atomsprovides uniform nucleation and deposition sites, so that the lithium metal intends to grow into the hollow carbon nanocages, thereby achieving uniform deposition and dissolution in the continuous cycle process of the lithium metal. In addition, the ultrathin carbon wall effectively prevents the interface reaction from happening, and the cycle life of the lithium metal battery is greatly prolonged.

The invention discloses conotoxin and collagen fusion protein as well as a preparation method and application thereof, and relates to the technical field of biological genes. The amino acid sequence of the fusion protein is as shown in SEQ. ID. No.5. The fusion protein disclosed by the invention is proved to be capable of effectively reducing the cytotoxicity of the conotoxin and improving the biological safety of raw materials on the premise of not influencing the effect of the conotoxin by collagen fusion; meanwhile, transdermal peptide is added during molecular design, the wrinkle removing and moisturizing capacities are verified by efficacy, and it is proved that the transdermal absorption capacity of fusion protein can be effectively improved by adding the transdermal peptide, and transdermal absorption of conotoxin is promoted.

The invention provides a fast-positioning low-shrinkage UV moisture dual-curing polyurethane hot melt adhesive and a preparation method thereof, and relates to the field of adhesives, flexible polyurethane modified dihydric alcohol with acrylate double bonds is prepared, the double bonds capable of being subjected to free radical photopolymerization are introduced into a polyurethane prepolymer, and UV illumination is carried out to obtain the fast-positioning low-shrinkage UV moisture dual-curing polyurethane hot melt adhesive. The prepolymer side chain with double bonds can be subjected to free radical photopolymerization to form a certain degree of crosslinking, so that the cohesion of the colloid is rapidly improved, the rapid positioning effect is achieved, and the main chain segment reaches the final strength through later moisture curing. In addition, the polyurethane modified polyether glycol is good in molecular chain flexibility and high in molecular adjustable degree, the flexible long chain can relieve shrinkage caused by colloidal crystallization formed by main chain crystalline polyester polyol, the cohesion strength of the colloid is guaranteed, the impact resistance of the colloid is improved, and the polyurethane modified polyether glycol has a great application prospect in the aspect of intelligent wearing.

The invention discloses an electrocatalytic oxidation filler, a preparation method thereof and a three-dimensional electrocatalytic oxidation device. The electrocatalytic oxidation filler is preparedby mixing a mixture of clay minerals and a curing agent and a mixed solution of Cu < 2 + >/Mn < 2 + > and roasting. The three-dimensional electrocatalytic oxidation device comprises an anode, a cathode and an electrocatalytic oxidation filler filled between the anode and the cathode. The electrocatalytic oxidation filler provided by the invention has the advantages of good conductivity, low energyconsumption, high stability, strong catalytic activity, no need of supporting electrolyte and the like, is widely applied to treatment of industrial wastewater as a filler of a three-dimensional electrocatalytic oxidation device, can realize effective removal of organic pollutants in the wastewater, and has relatively high use value and relatively good application prospect. The preparation methodof the filler has the advantages of being simple in process, convenient to operate, easy to control, low in raw material cost, low in energy consumption, short in consumed time, environmentally friendly and the like, is suitable for continuous large-scale batch production, facilitates industrial utilization and shows a good application prospect.

The invention discloses a preparation method of a flexible spinning hollow carbon self-supporting electrode, which comprises the following steps: carbonizing phenolic resin at high temperature to obtain solid carbon spheres, etching with hydrofluoric acid to obtain hollow carbon spheres, uniformly mixing the hollow carbon spheres with polyacrylonitrile, obtaining a flexible spinning composite material through an electrostatic spinning technology, and finally, preparing the flexible spinning hollow carbon self-supporting electrode. The flexible spinning composite material is subjected to pre-oxidation and high-temperature carbonization to obtain the flexible self-supporting electrode. The prepared flexible spinning composite material is mainly formed by compounding hollow carbon spheres and polyacrylonitrile, the pore size distribution and the specific surface area of the flexible spinning composite material can be effectively changed by controlling the proportion of the hollow carbon spheres, and then the electrochemical performance of the flexible spinning composite material is regulated and controlled; meanwhile, polyacrylonitrile can provide a good three-dimensional flexible conductive framework after high-temperature carbonization, so that the conductivity is improved, the cycling stability of the self-supporting electrode is improved, and the volume expansion and shrinkage performance of the self-supporting electrode in the ion transmission process is relieved.

The invention discloses a zinc oxide microsphere, an electrode and a preparation method thereof, and the preparation method of the zinc oxide microsphere comprises the following steps: 1) preparing a mixed solution; 2) reacting the mixed solution to prepare zinc-based glycerate; and 3) calcining the zinc-based glycerate to prepare zinc oxide microspheres. The zinc oxide microspheres which are controllable in size, controllable in internal structure and uniform in size are prepared through a simple solvothermal method by utilizing the reaction of the zinc salt, the glycerol and the isopropanol which are low in price. When the zinc oxide microsphere is used as a lithium ion battery negative electrode material, an electrochemical test result shows that the zinc oxide microsphere has high specific discharge capacity and excellent cycle performance. According to the method, expansion and shrinkage of zinc oxide in the charging and discharging process are effectively relieved, the problem of capacity fading caused by the volume effect can be effectively solved, and good cycle performance is achieved.

In order to solve the problems that a steel ladle is large in weight, short in service life, frequent in maintenance and the like, the invention provides a steel ladle furnace lining which mainly comprises a heat preservation layer, a permanent layer and a working layer which are sequentially distributed from outside to inside. An anchoring part is further fixedly connected to the inner wall of a steel ladle shell, one end of the anchoring part is fixedly connected with the steel ladle, the other end of the anchoring part sequentially penetrates through the heat preservation layer and the permanent layer to be located in the working layer, the heat preservation layer is made of a composite silicate heat preservation material, and the working layer is made of a ceramic fiber high-temperature fireproof coating. The overall structure is light in weight, the heat preservation effect is good, thermal shock resistance is achieved, erosion resistance is achieved, and maintaining is easy.

The invention provides a TiO2 and CuO composite porous material for a supercapacitor and a preparation method thereof, belonging to the technical field of electrode materials. The composite porous material has an ordered porous structure, and as the electrode material of the supercapacitor, can effectively reduce the expansion and contraction generated in the charging and discharging process, andkeep the structure stable. The preparation method of the composite porous material comprises the following steps: placing a slide in an ethanol solution of polystyrene microspheres, evaporating ethanol to form a polystyrene film by self-assembly; P123 is stirred and dissolved in ethanol, isopropyl titanate and hydrochloric acid are added, titanium tetrachloride is added dropwise, and cupric chloride dihydrate is added to obtain composite precursor solution of titanium dioxide and cupric oxide; The glass slide loaded with polystyrene film was inserted into the composite precursor solution obliquely, and the ethanol was evaporated to induce the self-assembly of the composite precursor on the polystyrene film. TiO2 and CuO composite porous materials were obtained by calcination in muffle furnace.

The invention relates to the field of pharmaceuticals and particularly relates to a preparation method of eye drops. The preparation method comprises the following step: soaking raw material pedicularis verticillata in a sodium chloride isotonic solution for treatment, wherein when the osmotic pressure of the sodium chloride solution is equal to that of cells of pedicularis verticillata, the osmotic pressures inside and outside the cells are balanced, matter exchange is avoided, and component loss is avoided; the active components are fully extracted, a phenylpropanoid glycoside compound is extracted therefrom, so that on one hand, the eye drops have relatively strong antibacterial and anti-inflammatory activities, achieve the effect of transcriptional activation of tissue inflammation genes, and are capable of alleviating inflammation of eyes; on the other hand, the eye drops also contain antioxidant active matters for alleviating fatigue, so that muscle contraction caused by fatiguecan be alleviated, and the eye drops play roles of preventing fatigue and protecting eyeballs.

The invention discloses a wooden door leaf which comprises a pool plate and an edge purlin. The pool plate is formed by splicing a plurality of subplates. Each subplate comprises base plates in a right trapezoid shape and assembly plates in a parallelogram shape, and the base plates and the assembly plates are spliced into the rectangular pool plate. Splicing seams are formed at the junctions between the base plates and the assembly plates or between the assembly plates. Drying grooves are formed between the base plates and the assembly plates or between the assembly plates on the upper side and the lower side of the splicing seams. The drying grooves are hidden in the pool plate. Drying agents are arranged in the drying grooves. The splicing seams are arranged obliquely. Threaded holes are formed in the head end and the tail end of each splicing seam. The threaded holes lead to the drying grooves. The threaded holes are formed in the two sides of the drying grooves. Metal rings are arranged in the threaded holes. Plug columns are arranged in the metal rings. The wooden door leaf provided by the invention has the characteristics of being good in damp-proof effect, small in deformation and long in service life.

The invention relates to an NCM ternary positive electrode material with a lithium vacancy structure on the surface, and belongs to the field of chemical energy storage batteries. The method comprises the following steps: adding a weak oxidant into an organic solvent, and uniformly stirring and mixing to obtain a mixed solution; then adding an NCM ternary positive electrode material with micron-sized secondary particles into the mixed solution, and carrying out heat preservation at 20-60 DEG C for 12-24 hours to obtain a turbid liquid; and carrying out solid-liquid separation, and carrying out heat treatment on the collected solid material in an oxygen atmosphere at 200-600 DEG C for 1-10 hours to obtain the NCM ternary positive electrode material with a lithium vacancy structure on the surface, so that formation of lithium vacancies is beneficial to reducing the migration energy when Li < + > migrates among octahedral positions, and diffusion of Li < + > in the material is accelerated. Increase of the migration rate of Li < + > is beneficial to improving the rate capability of the material and reducing the polarization phenomenon at the same time. In addition, rapid movement of Li < + > also helps to improve the uniformity of Li distribution in the material and improve the cycling stability of the material.