31results about How to "Fast reaction kinetics" patented technology

A V-doped Ni coated with V-doped NiO 3 S 2 Preparation method of core-shell structure. Add vanadium chloride and urea into ultrapure water to obtain solution A; place solution A and nickel foam in the reaction liner and seal it, then put it into a homogeneous reactor for hydrothermal reaction, wash and dry to obtain in-situ growth in NiV‑LDH / NF on nickel foam; put the thioacetamide solution NiV‑LDH / NF in a hydrothermal kettle for hydrothermal reaction and cool to room temperature; place the reaction kettle at room temperature for 20‑24h and take out the nickel foam After washing and drying, V-doped Ni coated with V-doped NiO was obtained 3 S 2 Electrocatalytic materials with core-shell structure. In the present invention, nickel foam is used as nickel source, vanadium chloride and urea are respectively vanadium source and alkali source, and the NiV-LDH / NF precursor grown on the surface of foam nickel is obtained in situ, and the presence of vanadium ions accelerates the nickel ions in foam nickel The release of NiV-LDH also regulates the morphology of NiV-LDH, and the obtained in-situ NiV-LDH / NF structure is extremely stable. The prepared final core-shell composite material has excellent electrocatalytic oxygen evolution and hydrogen evolution performance and stability, as well as fast reaction kinetics.

The invention relates to the field of a fuel cell electrolyte and discloses a proton conductor material, a preparation method and application thereof, and an intermediate temperature fuel cell. The chemical formula of the proton conductor material is (NH4)2A1-xBxP4O13, wherein A is one, two or more than two elements of Y, Ti, Nb, Ta, Mo and W; B is one, two or more than two elements of Al, In, Si, Ge and Sn; and x is greater than or equal to 0 and less than or equal to 0.4. When the proton conductor material provided by the invention works in an intermediate temperature (150 to 400 DEG C) range, the proton conductivity is obviously higher than 4*10<-2>S / cm, and application of the proton conductor material to the intermediate temperature fuel cell can be realized.

The invention discloses a novel tellurium-based electrode and an application thereof in a sodium-tellurium battery and a sodium-ion battery. The electrode material is selected from elemental tellurium and a tellurium-bearing composite material; the sodium-ion battery comprises a cathode, an anode and an electrolyte; and an anode active material is selected from a tellurium-based material. The sodium-ion battery disclosed by the invention has the characteristics of good safety, high specific capacity and cycling stability.

The present invention provides a fluorescent coded microsphere, an array and a preparation method, wherein the coded microsphere includes a microsphere carrier, the microsphere carrier is a mesoporous microsphere, and at least one kind of fluorescent light is arranged inside the microsphere carrier. Markers, the fluorescent markers are formed by connecting fluorescent dyes with intermediary substances, and the central emission wavelengths of the fluorescent dyes corresponding to each of the fluorescent markers are different, so that each fluorescent dye defines one of the encoded microspheres Encoding information for the dimension.