36results about How to "Promote commercial development" patented technology

The invention relates to a producing method of anode supporting yttrium oxide stable zirconium oxide electrolyte membrane. It relates to the producing method of electrolyte membrane used in solid oxygen compound fuel battery. It is produced following the steps: making multi-hole anode supporting; making YSZ electrolyte membrane on the surface of the supporting; forming ethyl cellulose terpilenol solution; adding YSZ powder into the solution and grinding for over two hours to form electrolyte stuff; spreading the stuff on the surface of supporting; sintering the dried anode supporting and the electrolyte membrane to gain anode supporting YSZ electrolyte membrane. The electrolyte membrane produced following the invention is equality and compact. Its thickness is between 10-30mucrometer. The cost of the device is low, and the operation is easy and fast. Meanwhile the ideal output power density of fuel cell is ensured.

The invention belongs to the field of electric power system technology and especially relates to a small signal stability analysis method for a wind storage isolated network system. The method improves the operation reliability of the wind storage isolated network system. The method comprises the steps: step1, determining constitution of the wind storage isolated network system, step2, establishing a mathematical model of the wind storage isolated network system according to the constitution of the wind storage isolated network system, step3, establishing a wind storage isolated network system small signal linearization matrix equation according to the established mathematical model of the wind storage isolated network system, step4, calculating a characteristic constant of the small signal linearization matrix equation, and step5, judging the small signal stability of the wind storage isolated network system according to Lyapunov linear system stability criterion.

The invention discloses a quasi-solid tungsten trioxide electrochromic device and a preparation method thereof. The quasi-solid tungsten trioxide electrochromic device comprises a working electrode, an electrolyte layer, a counter electrode and a transparent conducting layer, wherein the working electrode is tungsten oxide, the electrolyte layer is a choline chloride ethylene glycol gel containinglithium salt, and the counter electrode is nano cerium oxide. A tungsten trioxide electrochromic film electrode and a cerium oxide counter electrode are prepared by adopting a spraying method, gel electrolyte is taken as pseudo ionic liquid, the gel electrolyte has the advantages of being low in cost, green and environment-friendly, highly transparent, not easy to leak, and high in ionic conductivity, so that the device prepared by the electrolyte has the characteristics of high response speed, large optical density difference and low cost.

The invention relates to an ionic composite proton exchange membrane containing POSS block copolymer and a preparation method thereof, which is characterized in that the the membrane comprises components of 70-99wt% polymer matrix and 1-30wt% ionic POSS-containing block copolymer; through phase separation method for making holes, dipping, multilayer scratching or dissolving and fusion mixing, thePOSS block copolymer is used as a function coating or blended phase to be composite with multiple kinds of commercial proton exchange membranes to prepare various kinds of ionic POSS-containing blockcopolymer composite proton exchange membranes with different micro structures. This method effectively solves the problem of size instability or low proton conductivity caused by the swelling of commercial proton exchange membranes at high temperature. The preparation method has the advantages of strong universality, good structure control, convenient operation and high efficiency.

The invention relates to a fuel cell technology, and aims to provide preparation of a monatomic palladium catalyst and application of the monatomic palladium catalyst in a direct formic acid fuel cell. The preparation method comprises the following steps of: preparing an o-phenylenediamine cyclodextrin inclusion compound from o-phenylenediamine and [beta]-cyclodextrin, adding the o-phenylenediamine cyclodextrin inclusion compound into a chloropalladic acid solution, and performing stirring to obtain a palladium coordinated o-phenylenediamine cyclodextrin inclusion compound solution; adding sodium chloride, carrying out liquid nitrogen flash freezing, and performing drying to obtain a precursor; carbonizing the precursor under the protection of nitrogen atmosphere, performing cooling, washing and drying to obtain the monatomic palladium catalyst. The technical route is simple, universality is achieved, and generation of impure phases can be avoided. The monatomic palladium catalyst hashigher electrocatalytic activity, and the cost can be effectively reduced. The co-catalytic application of the monatomic palladium catalyst and the cocatalyst (VO)SO4 provides a new thought for the design and performance improvement of the direct formic acid fuel cell, and is beneficial to the commercial development of the fuel cell.

The invention discloses the technical field of communication, and particularly relates to an underwater image transmission system based on visible light communication. The visible light communication technology has the advantages of high-speed transmission and real-time application realization, such as high-speed video transmission, which is a requirement which cannot be met by other wireless communication modes; low link delay: the transmission speed of the light in the water is far higher than that of the sound wave, so that the visible light communication system link is not influenced by the link delay. In addition, compared with an acoustic method and a radio frequency method, the visible light communication technology has higher communication safety; and the optical underwater transceiver with relatively small volume and lower cost can be realized, and the economic benefit is higher, so that the commercial development of large-scale visible light communication in the future can be improved.

The invention belongs to the field of solar cells, and discloses a high-performance environment-friendly lead-based perovskite solar cell and a preparation method thereof. According to the preparationmethod, a certain amount of a chelating agent disodium ethylene diamine tetraacetate or 2, 3-dimercaptosuccinic acid is introduced into a lead-based perovskite precursor solution so that the crystallinity and the crystal orientation of a lead-based perovskite thin film layer can be effectively optimized, the grain boundary of a perovskite thin film is passivated, and the energy conversion efficiency of the perovskite thin film is improved. Meanwhile, when the device is decomposed, the chelating agent can be combined with lead ions in time to form a stable and soluble complex, the complex canbe smoothly metabolized by a human body and discharged along with urine after being absorbed by the human body accidentally, and finally harm to the human body is remarkably reduced. Commercial development of the perovskite solar cell is facilitated, and particularly application of perovskite indoor photovoltaic as energy supply of the smart home terminal in the Internet of Things era is promoted.

The invention relates to the field of alkaline redox flow battery energy storage, in particular to a preparation method of an alkaline redox flow battery system with high energy density and low cost,and aims to solve the problems of low energy density, high cost and the like of an existing all-vanadium redox flow battery. Carbon felt is used as a positive electrode material of a flow battery, anda zinc sheet or a zinc plate is used as a negative electrode material of the flow battery. An alkaline aqueous solution of permanganate (such as KMnO4, NaMnO4 and the like) is used as a positive electrode electrolyte; an alkaline aqueous solution of strong base (such as KOH, NaOH and the like) is used as a negative electrolyte, and a perfluorosulfonic acid proton exchange membrane (such as Nafion117, Nafion212 and the like) subjected to ionization treatment is used as an ion exchange membrane of the flow battery to assemble the battery. Thus, an alkaline redox flow battery system having low cost and high energy density is obtained. The redox flow battery system researched and developed by the invention has the advantages of the high energy density, the low cost, the long cycle life and the like, and can be widely applied to the field of redox flow battery energy storage.

The invention relates to the technical field of wind driven generators, in particular to an active output fluctuation stabilizing method based on an operating working condition of a wind driven generator. The invention provides the active output fluctuation stabilizing method based on the operating working condition of the wind driven generator. The method stabilizes power at high frequency deviation and at low frequency deviation, that is, the method comprises the steps of storing energy effectively by means of a rotating part of a fan to inhibit active output fluctuation at high frequency deviation and releasing energy to a power grid effectively by means of the rotating part of the fan to inhibit the active output fluctuation at low frequency deviation, so that a double-fed wind drivengenerator unit takes part in power stabilization actively to smooth the frequency fluctuation of the system, thereby reducing the starting number of times of primary frequency modulation of a synchronous generator.

The invention relates to a sandwich structure composite material as well as a preparation method and application thereof. The composite material comprises Nb2C and nitrogen-doped carbon nanotubes (N-CNTs), the Nb2C is in a two-dimensional organ shape, and the N-CNTs are clamped between Nb2C lamellas. The conductivity of Nb2C is improved. With the insertion of the N-CNT, the stacking between Nb2C lamellar structures is avoided, the ion transmission capacity of Nb2C is improved by the N-CNTs, and the electrochemical reaction area is increased. The preparation method comprises the following steps: etching Nb2AlC to obtain Nb2C; dispersing Nb2C into water to obtain an Nb2C colloidal solution; and mixing the NCNT solution and the Nb2C colloidal solution, and carrying out a self-assembly reaction to obtain the sandwich structure composite material. And the electrical property is excellent.

The invention provides a low-temperature preparation method of a zirconium-based ceramic electrolyte membrane for a fuel cell. The low-temperature preparation method comprises the following steps: preparing a zirconium source precursor, which is obtained by mixing raw materials according to the ratio, into slurry; pressing and molding the ceramic slurry into a pointed cone array shape; carrying out copper ion and zinc ion doping, and sintering through microwave plasmas; after sintering for 0.5 to 1h, obtaining the electrolyte membrane. According to the low-temperature preparation method provided by the invention, plasmas are generated through microwave ionized gas, and are gathered on a micro-tip to form a point discharge effect, so that the ceramic membrane is rapidly heated; the doped copper ions and zinc ions can be used for effectively lowering the sintering temperature; meanwhile, added borane gas is added and is cracked, and the surface is densified, so that the uniform and denseceramic electrolyte membrane is obtained at low temperature, and furthermore, the disadvantages of a traditional zirconium-based ceramic electrolyte membrane that the sintering density under a low-temperature condition is low and the sintering time is long are solved. Furthermore, the low-temperature preparation method has very important practical significance of reducing the sintering temperature and the sintering time of zirconium-based ceramic electrolyte and improving the density.

The invention relates to the technical field of wind driven generator frequency control, in particular to a controllable short-term frequency supporting method for a wind driven generator suitable forlow-frequency disturbance. According to the method, droop control is added to fan rotor side control, and the active loss of a system is compensated by temporarily releasing the rotational kinetic energy stored in a fan; a self-defined droop parameter is calculated by considering the participation frequency modulation potential of the fan; rapid system frequency response is actively provided; thesystem frequency support control of a controllable wind turbine generator is realized under different fan operation conditions; that is to say, when the rotating speed of a fan rotor is high, rotating kinetic energy is fully released to compensate for active power loss and provide response time for a conventional generator set to participate in regulation, and when the rotating speed of the rotoris low, a proper amount of rotating kinetic energy is released to compensate for system active power loss, and the fan rotating speed instability problem and severe secondary frequency drop are not caused. A guarantee is provided for high-wind-power grid connection, and the use of an energy storage device for frequency modulation is reduced; and commercial development of the fan can be promoted.

The invention discloses a method for producing acid whey by using whey water. The method is characterized by comprising the following steps: acid whey fermentation strains are activated in a culture medium; then the activated acid whey fermentation strains are inoculated into sterilized whey water; closed fermentation is performed to quickly obtain the acid whey; the acid whey with all fermentation conditions controlled is utilized as a subculture fermentation agent, and thus, performing strain activation and inoculation, and then performing fermentation again are not needed. According to themethod, lactic acid bacteria screened from whey are selected and are easy to adapt to grow and propagate in the whey, so that the time for the whey to become sour is greatly shortened; fermentation isstable and industrial production is facilitated; selecting the whey water as a product obtained after a dairy fan or a dairy cake is convenient and fast, and lactobacillus fermentum and lactobacillusbulgaricus have a synergistic effect on fermentation of the whey.