47results about How to "Suitable for commercial applications" patented technology

The invention discloses a preparation method of an amphoteric ion exchange membrane and relates to a preparation method of an amphoteric ion exchange membrane for an all-vanadium redox flow battery. According to the scheme, the preparation method comprises the following steps of: performing irradiation grafting on polymer powder poly(vinylidene fluoride); transforming the irradiation-grafted polymer powder into a membrane material; and sulfonating the membrane material, hydrolyzing, introducing a sulfonate radical group with a cationic exchange function, putting the membrane material into a hydrochloric acid aqueous solution for undergoing a protonation reaction and introducing basic nitril with an anion exchange function to obtain the amphoteric ion exchange membrane. In the method, commercial poly(vinylidene fluoride) resin with low price is taken as a raw material, so that the membrane making cost can be lowered; a C-F bond has large bond energy, so that the membrane can keep high chemical stability in a strong acid and high oxidizing electrochemical environment; and meanwhile, the problem of non-uniform distribution of grafted chains of the conventional heterogeneous irradiation-grafted membrane in the vertical direction of the membrane is solved.

The present invention provides a solar cell backboard. The solar cell backboard comprises in order from bottom to top: a ground layer inorganic matter weather-proof layer, a first polymer weather-proof layer, a second polymer weather-proof layer, a first structure enhancement layer, a second structure enhancement layer, a third structure enhancement layer, a third polymer weather-proof layer, a fourth polymer weather-proof layer and a top layer inorganic matter weather-proof layer, wherein the thickness of the first polymer weather-proof layer is larger than the thickness of the second polymerweather-proof layer, the thickness of the fourth polymer weather-proof layer is larger than the thickness of the third polymer weather-proof layer, the thicknesses of the first structure enhancementlayer, the second structure enhancement layer and the third structure enhancement layer are the same. The solar cell backboard is low in cost, good in weatherability, high in endurance and good in mechanical properties.

The invention provides a polyurethane microcellular elastomer. The elastomer adopts polyether polyol as a reaction raw material and is matched with other components. The obtained polyurethane microcellular elastomer has a lower density and simultaneously It has excellent tensile strength, tear strength, elongation at break, wear resistance and folding resistance. The present invention also provides a preparation method of the elastomer.

The invention provides a carbon-sulfur double doped nickel-cobalt double hydroxide electrode material, a preparation method and a supercapacitor prepared therefrom. The electrode material comprises carbon-sulfur double doped nickel-cobalt double hydroxide electrode material. According to the preparation method, nickel salt and cobalt salt are deposited on a conductive substrate by a constant voltage cathode electrochemical deposition method. The electrode material is directly connected with the conductive substrate without adding adhesive, so the resistance is effectively reduced, and the highperformance double doped nickel-cobalt double hydroxide electrode material is obtained, which overcomes the disadvantage of poor rate performance of the traditional double hydroxide electrode material. The preparation method has the advantages of simple preparation process, low cost and short period, and is suitable for commercial application. The supercapacitor prepared with the electrode material as the positive electrode and the activated carbon as the negative electrode has good charge-discharge performance and high power density and energy density and conforms to the development trend ofsupercapacitors with both high energy density and high power density.