15results about How to "Strong transmission ability" patented technology

The present invention discloses a bipolar plate for PEM water electrolysis hydrogen production and a preparation method thereof, belonging to the field of water electrolysis hydrogen production. The flow field structure is a combination of two shapes: a trapezoidal shape and a rectangular shape. Half of the flow field structure near the cathode or anode inlet is rectangular, and half of the flow field structure near the cathode or anode outlet is trapezoidal. The connection between the two flow fields is an array point-shaped multifunctional area, and the composite flow field structure is a two-layer structure of a macroporous titanium layer and a microporous titanium layer; the present invention also discloses a composite flow field preparation method for a multi-shape integrated water electrolysis metal bipolar plate, which uses a mold printing method to print different titanium slurries on an alloy steel plate to prepare a composite structure of a water electrolysis bipolar plate flow field.

The invention relates to the field of organic electroluminescent devices, and discloses an organic compound and application thereof and an organic electroluminescent device.The organic compound has a structure shown in A-L-B, A is a group shown in the formula (I-1), B is a group shown in the formula (I-2), and L is an integer greater than or equal to 1. L does not exist or L is at least one of linking groups formed by leaving any two H capable of leaving from a C3-30 aromatic compound containing or not containing A-type heteroatoms, and the linking groups optionally contain at least one substituent group selected from the combination A. When the organic compound is applied to the organic electroluminescent device, the driving voltage can be reduced, the luminous efficiency can be improved, and the service life can be prolonged. # imgabs0 #

The invention relates to the technical field of organic electroluminescent devices, and discloses a nitrogen heterocyclic organic compound and application thereof, an organic electroluminescent device and a perovskite solar cell. The organic compound has a structure as shown in a formula (I). When the organic compound is applied to the organic electroluminescent device, the performance of the device can be improved, the driving voltage is reduced, the luminous efficiency is improved, and the service life is prolonged. # imgabs0 #

The invention discloses a rare earth ion doped graphene / titanium dioxide composite material, and the preparation method thereof is as follows: firstly, rare earth ions are doped into graphene sheets at high speed to prepare rare earth ion doped graphene; then, a mixed solution of anhydrous ethanol and glacial acetic acid is mixed with tetrabutyl titanate and recorded as liquid A; anhydrous ethanol, deionized water and concentrated hydrochloric acid are stirred evenly so that the solution pH is less than 3, and then rare earth ion doped graphene is added, and the solution is cooled by ultrasonic oscillation in a water bath and recorded as liquid B; liquid A and liquid B are mixed and reacted, and gel is obtained after standing and aging, and the gel is dried, ground and calcined to obtain rare earth ion doped graphene / titanium dioxide composite material powder. Because rare earth ions are doped between graphene sheets, the conductive properties of graphene are significantly changed, and the synergistic effect of the three greatly improves the photocatalytic ability of titanium dioxide.

The invention relates to the technical field of organic electroluminescent devices, and discloses a nitrogen heterocyclic organic compound and application thereof, an organic electroluminescent device and a perovskite solar cell. The organic compound has a structure as shown in a formula (I). When the organic compound is applied to the organic electroluminescent device, the performance of the device can be improved, the driving voltage is reduced, the luminous efficiency is improved, and the service life is prolonged. # imgabs0 #

The application provides a triarylamine derivative and an organic electroluminescent device thereof, and particularly relates to the technical field of organic electroluminescence. In order to solve the problem of low performance of an organic electroluminescent device in the prior art, the application provides a triarylamine derivative and an organic electroluminescent device thereof. The triarylamine derivative provided by the application has good hole transport capacity, a suitable HOMO energy level, a high glass transition temperature, high thermal stability, good film-forming property and the like. When the triarylamine derivative is applied to an organic electroluminescent device as a hole transport layer material, the energy barrier of holes in the transport process can be reduced, the injection and transport of holes are facilitated, the recombination probability of carriers is improved, the generation of Joule heat in the device is reduced, and the luminous efficiency and service life of the device are improved.

This invention belongs to the field of organic electroluminescent materials, and discloses an organic electroluminescent material, an organic electroluminescent material containing two main bodies, and an organic electroluminescent device. The organic electroluminescent material containing two main bodies disclosed in this invention includes a first main body material and a second main body material. When the organic electroluminescent material of this invention or the organic electroluminescent material containing two main bodies is applied to an organic electroluminescent device, it has low driving voltage, high luminous efficiency, and long service life.

The present application provides a positive electrode active material and a preparation method thereof, a secondary battery, a battery module, a battery pack and an electric device. The positive electrode active material comprises a core, a first coating layer and a second coating layer, wherein the first coating layer is coated on the surface of the core, and the second coating layer is coated on the surface of the first coating layer. The core is LiNi x Co y A z O2, wherein A is Mn or Al, 0.6≤x<1, 0<y≤0.2, x+y+z=1, and the first coating layer is Ln x Zr 1‑x O 2‑δ , 0.08<x<0.2, 0.04<δ<0.1, wherein Ln is selected from one or more of Gd, Dy, Er, Yb, Y, the second coating layer is LiM2(PO4)3, wherein M is Ti or Zr, relative to the total weight of the positive electrode active material, the weight proportion of the first coating layer is set to A%, the thickness of the first coating layer is set to d1, unit: nm, the thickness of the second coating layer is set to d2, unit: nm, the positive electrode active material satisfies the following conditions: 0<d1 / (d1+d2+A)≤0.83, optionally, 0.3≤d1 / (d1+d2+A)≤0.6.

The invention provides a confinement conductive composite membrane, a preparation method thereof and an electrochemical method for in-situ hydrolysis of extracellular polymeric substances based on the confinement conductive composite membrane, and relates to the technical field of sewage treatment. The confinement conductive composite membrane comprises an ultrafiltration membrane carrier and a conductive layer formed on the surface of the ultrafiltration membrane carrier, the conductive layer is made of a carbon nano tube material, and at least one of nano Ni, Co, Fe and Mo catalysts is selectively loaded on the inner wall of a hollow tube or between two-dimensional layers of the carbon nano tube material. The structure effectively prevents agglomeration and loss of the catalyst through a confinement effect, and the dispersity and stability of the catalyst are improved; meanwhile, a continuous conductive network formed by the carbon nanotubes has excellent electron transmission capability, and electrons can be quickly transmitted to catalytic active sites. When the composite membrane is used as a cathode to work, the loaded nano-metal catalyst can remarkably reduce the overpotential of hydrogen evolution reaction, an interface can be induced to construct an alkaline microenvironment in situ under low voltage, and EPS attached to the surface of the membrane is promoted to be hydrolyzed and degraded.

The invention relates to a preparation method of a positive electrode active material, the positive electrode active material, a positive plate and a battery in the technical field of lithium battery production, the method comprises the following steps: S1, uniformly mixing a manganese-containing precursor, a lithium source, a W source, an Nb source and a metal source M to obtain a mixture; and S2, roasting the mixture to obtain the positive electrode active material. According to the method, doping and coating can be combined through one-step calcination, the process is simple, the cost is low, and the method is suitable for industrial production; the doping of metal elements can stabilize the lattice structure of lithium manganate, and prevents lattice distortion and structural collapse of lithium manganate in the charging and discharging process; in the sintering process, W and Nb elements are diffused and uniformly enriched on the surface of the material for surface doping of the material, and LiNbO3 and Li2WO4 coating layers are uniformly formed on the surface of the material, so that residual Li on the surface of the material is effectively eliminated, the capacity of the battery is effectively improved, and the cycle performance of the battery is improved.

The utility model discloses an RJ45 connector and an electrical assembly thereof, the electrical assembly comprises a pcb printed board, a first reed group located at the front side of the pcb printed board, and a wire clamping reed group located at the rear side of the pcb printed board, and by improving the layout of connecting holes on the pcb printed board, the layout of the first reed group and the layout of the wire clamping reed group, the wiring of the pcb printed board is improved. The electrical performance of the pcb printed board, the anti-interference performance and the conductivity of the front-end reed and the anti-interference performance and the conductivity of the rear-end wire clamping reed are improved respectively, so that the transmission performance and the anti-interference capability of the electrical assembly and the connector on the whole are stronger, the structure is simple, and the manufacturing is easier.

The invention relates to the field of organic light-emitting devices, and discloses an organic compound, application thereof and an organic light-emitting device, and the organic compound has a structure as shown in a formula (I). When the organic compound is applied to the organic electroluminescent device, the performance of the device can be improved, the driving voltage is reduced, the luminous efficiency is improved, and the service life is prolonged. # imgabs0 #

The invention discloses a CsCu2I3 perovskite thin film with a quasi-circular structure and an ultraviolet photoelectric detector, the CsCu2I3 thin film is composed of quasi-circular crystal grains which are closely stacked, no gap exists between the crystal grains, the crystal grains are uniformly distributed in the whole thin film, the diameter of the crystal grains is 0.01-100 microns, and the thickness of the thin film is 80-2000 nm. Compared with existing nanocrystals and microwires, the thin film has the advantages that the preparation process is simpler, the repetition rate is higher, a thin film sample can more easily meet preparation of large-area and flexible devices, and the thin film has wider application scenes and potential, can be used for electric arc imaging, optical measurement, missile guidance, night vision systems, machine vision, flexible wearable detection equipment and the like, and has wide application prospects. The method has a good application prospect in the fields of image sensing, military supervision, weather monitoring, information communication and the like.

The invention belongs to the technical field of sodium ion batteries, and relates to a laminated quick-charge and quick-discharge sodium ion battery. Layered oxide and hard carbon are mainly used as main materials of a positive electrode and a negative electrode, activated carbon black SP and carbon nanotubes CNT are used as conductive agents, traditional sodium carboxymethyl cellulose CMC, styrene-butadiene rubber SBR, polyvinylidene fluoride PVDF and a newly added acrylic acid copolymer aqueous binder PAA are used as binders, ethylene sulfate DTD is additionally added to an electrolyte, and the lithium ion battery is prepared. And the laminated sodium ion battery prepared in a laminated manner is excellent in quick charging and discharging performance, and meanwhile, the stability of long-period circulation is ensured. The high-temperature-resistant low-temperature-resistant cable has excellent low-temperature resistance and also shows good performance advantages in a high-temperature environment.

The present application relates to a kind of measurement device of spatial coordinate and temperature information synchronous acquisition, including temperature measurement part and spatial coordinate measurement part, spatial coordinate measurement part is composed of target ball and bolt target seat matched with laser tracker;Temperature measurement part is composed of upper end cover, lithium battery, power supply and parameter switch, PCB circuit board, antenna interface, rotatable rubber stick antenna, aviation plug interface, surface mount sensor, cap shell contact sensor, lower end cover, bottom plate, paste composition.The present application has two kinds of temperature measurement mode, temperature data is transmitted by wireless communication, device temperature measurement part is connected with target seat thread, target ball is adsorbed to target seat by magnetic force, can simultaneously obtain the temperature data of measurement point spatial coordinate and its area.The present application is modular design as a whole, compact structure, the characteristics of cylindrical shape structure of modular assembly, wireless communication, multi-mode temperature measurement are widely applicable in large component assembly site environment, and strong reliability.