34results about How to "Ease of widespread commercial application" patented technology

The invention discloses a silver nanowire and M-phase vanadium dioxide nanoparticle composite film and a preparation method thereof. The film is prepared from silver nanowire film with the film thickness of 80-120 nm and an M-phase vanadium dioxide nanoparticle film with the film thickness of 100-1000 nm, which are sequentially coated on a substrate, wherein the linear diameter of the silver nanowire for forming the silver nanowire film is 40-100 nm, and the wire length is 50-100 microns; the particle size of the M-phase vanadium dioxide nanoparticle for forming the M-phase vanadium dioxide nanoparticle film is 20-100 nm. The preparation method comprises the following steps: spin coating or blade coating the substrate with silver nanowire isopropanol solution with the concentration of 0.3-1.5 wt%, drying the substrate, spin coating or blade coating the substrate coated with the silver nanowire film with M-phase vanadium dioxide nanoparticle aqueous solution with the concentration of 2-5 wt% or ethanol solution, and at last preparing the target product. The silver nanowire and M-phase vanadium dioxide nanoparticle composite film is low in phase transformation voltage; the preparation method is convenient and low in cost; the composite film can be widely applied to the fields such as energy-saving windows, gas sensors, optoelectronic switches, thermistors, infrared remote sensing receivers and uncooled focal plane radiation detectors.

The invention discloses a magnesium hydroxide-calcium alginate composite fire retardant and a preparation method thereof. The fire retardant is prepared from magnesium hydroxide and calcium alginate with the molar ratio being (1 to 3) to 1. The method comprises the following steps of calcining dolomite mineral powder to obtain dolomite ash powder, then adding the dolomite ash powder into water forstirring to obtain a digestive juice, then dropwise adding a sodium alginate aqueous solution into the digestive juice under stirring, performing stirring and foaming to obtain a foamed gel, then performing dryness finalization treatment on the foamed gel to prepare a target product, wherein dryness finalization treatment is spray drying finalization, spinning drying finalization, coating dryingfinalization or die formation drying finalization. The magnesium hydroxide-calcium alginate composite fire retardant has a limit oxygen index of 40 percent, is not decomposed with heat still at high temperature of 250 DEG C and is very easy to be widely and commercially applied to the fields of degradable fire-retardant fabrics, fire-retardant coating layers for decoration, non-combustible children toys and the like.

The invention discloses a preparation method of porous graphene. The preparation method comprises the following steps: dissolving ammonium salt and glucose into deionized water according to a weight ratio of the ammonium salt to the glucose to the deionized water being (0.6 to 1.2) to (0.4 to 0.8) to 5, thus obtaining mixed liquor, then adding a 1.8 to 2.2g / L graphene oxide water solution into the mixed liquor according to a weight ratio of the graphene oxide water solution to the ammonium salt in the mixed liquor being 10 to (0.6 to 1.2), stirring, drying to form a paste shape at 30 to 50 DEG C, thus obtaining a pasty mixture, then putting the pasty mixture into a protective atmosphere, heating the pasty mixture to 900 to 1000 DEG C from room temperature through 2 to 4h, and preserving heat for 1 to 2h, thus preparing a target product, wherein the ammonium salt is ammonium chloride or ammonium carbonate or ammonium nitrate, and the protective atmosphere is an argon atmosphere or helium atmosphere or neon atmosphere. The target product prepared by the preparation method can be directly used, is higher in electrical conductivity, and is very easily and widely commercialized and applied to fields such as environmental governance and energy utilization.

The invention discloses a colorful solar cell and a preparation method thereof. The battery is an ordered silicon nanowire array with a PN junction formed on the surface on a silicon substrate, wherein the diameter of the silicon nanowire is 50-120nm, the period is 500-1500nm, and the surface is covered with a dielectric layer with a thickness of 1-200nm; method In order to make an ordered mask on the surface of the silicon substrate using the nanosphere template method or electron beam exposure method or nanoimprint technology, the ordered nanometers are etched on it using a wet process or a Bosch process of reactive ion etching. line array, and then use the diffusion process to do the boron element on the surface of the silicon substrate with the ordered silicon nanowire array on it, and then, the obtained ordered silicon nanowire array with the PN junction formed on the surface After the dielectric layer is made by chemical vapor deposition method, electron beam evaporation method, atomic layer deposition technology or spin coating method on the silicon substrate, electrodes are made on it to obtain the target product. It can be easily and widely commercially applied to photovoltaic power generation systems in cities.