63results about How to "Increase the interface contact area" patented technology

A process for performing a chemical reaction between a plurality of chemical reactants in the presence of a catalyst, with at least a first reactant in a liquid phase and at least a second reactant in a gas phase, the first and second reactants mixing at least by interdiffusion. The process comprises supplying the reactants to a passage defined by a first surface and a second surface and optionally moving at least one of the first surface and second surface relative to each other. The reactants their mixture or reaction products form respective boundary layers against the first and second surfaces and the radial spacing between the first surface and second surface is equal to or less than the back-to-back radial thicknesses of the boundary layers.

The invention provides a perovskite type electroluminescent device and a preparation method thereof; the perovskite type electroluminescent device comprises a hole transport layer and a light-emittinglayer in sequence, wherein the light-emitting layer is arranged on the hole transport layer; the hole transport layer comprises an upper hole transport layer and a lower hole transport layer, whereinthe lower hole transport layer is a porous structure layer; and the upper hole transport layer adopts a material of a traditional hole transport layer, and the hole transport layer composed of the material and the porous structure layer has a high specific surface area, so that the interface contact area between the hole transport layer and the light-emitting layer can be effectively increased, the hole injection and transmission rate is improved, the injection and transportation balance of electrons and holes is facilitated, and the external quantum conversion efficiency of the perovskite light-emitting device is further improved.

The invention belongs to the technical field of multi-acid-based composite new materials, and provides a phosphomolybdic acid-polymer composite conductive hydrogel, a preparation method thereof, and an application in an all-solid flexible supercapacitor. In a one-step in situ polymerization process, negatively charged phosphomolybdic acid and positively charged polymer conductive hydrogel are formed through electrostatic self-assembly and physical adsorption, and phosphomolybdic acid nanoparticles are uniformly anchored or embedded in each other. Connected 3D mesh structures on the surface or interior of polymer conductive hydrogels. Directly used as a binder-free supercapacitor electrode material to realize electrochemical energy storage. The uniform loading of phosphomolybdic acid improves the conductivity of the composite material, which is beneficial to the PMo 12 The uniform pinning and exposure of reactive active sites not only accelerates electron transport, but also the excellent ductility and swelling properties facilitate its application in flexible devices. When bent at a large angle, the flexible device shows a very high capacitance retention rate, which shows great practicability in the field of integrated flexible electronic devices.

The invention belongs to the technical field of multi-acid based composite hydrogel new materials, and provides a phosphomolybdic acid / polymer / carbon nanotube composite conductive hydrogel, a preparation method and an application in an all-solid flexible supercapacitor. Using the positively charged polymer conductive hydrogel as a bridge, the negatively charged phosphomolybdic acid is loaded on the negatively charged acidified carbon nanotubes in one step, and the construction of the ternary composite hydrogel is realized through electrostatic self-assembly. Phosphomolybdic acid nanoparticles are uniformly anchored or embedded on the surface of acidified carbon nanotubes wrapped by a polymer conductive hydrogel with a 3D grid structure. It can be directly used as a binder-free supercapacitor electrode material to realize electrochemical flexible energy storage. Good for PMo 12 The uniform pinning and exposure of reactive sites accelerates electron transport, and the excellent ductility and swelling properties facilitate its application in flexible devices. When bent at a large angle, it shows a very high capacitance retention rate, which shows great practicability in the field of integrated flexible electronic devices.