33results about How to "Hypoxic" patented technology

The invention belongs to lithium battery materials, and specifically relates to a method for preparing a lithium titanate material, comprising the following steps: step 1, adding tetrabutyl titanate into absolute ethanol and stirring evenly to form a titanium alcohol solution; step 2, adding acetic acid Lithium is added to the titanic acid solution and stirred evenly to form a mixed solution; step 3, the titanium monoxide powder is added to the mixed solution by low-temperature ultrasound for 1-2 h to obtain a suspension; step 4, the suspension is sprayed to the constant temperature reaction kettle In the process, the coated titanium monoxide particles are obtained after sealing deposition and pressure relief cooling; step 5, the coated titanium monoxide particles are placed in the sealed reaction kettle for 1-3 hours under constant pressure, and then water vapor is introduced to carry out the sealed and pressurized reaction 2- 3h, after the pressure was released, it was sealed and sintered to obtain lithium titanate particles. The invention solves the problem of poor electrical conductivity of the existing lithium titanate material, uses titanium monoxide as the inner core, and uses lithium titanate as the surface coating layer to ensure that the prepared material has oxygen deficiency, improves the mobility of electrons, and thus improves the the conductivity.

The invention relates to novel preparation technology for a mixture taking water as a grinding medium. The novel preparation technology contains working procedures such as batching, wet grinding, unloading, slurry drying and the like, wherein in the working procedure of the wet grinding, distilled water is adopted as the grinding medium, and 2 to 3 percent of antioxidant substance is added into the distilled water; in the working procedure of unloading, the mixture is unloaded from a wet grinder and passes through a 320-mesh sieve, and the wet grinder is washed for 6 times by water; and in the working procedure of slurry drying, an open type spray drying tower is adopted for drying, slurry is output to a nozzle for atomization by a pump, fog drops move from the bottom up, encounter the hot air which moves from the top down, and then are dried and a material flows out of the tower and is loaded into a material barrel after the automatic cooling. The preparation technology can effectively eliminate potential safety hazard, and save a large amount of energy sources; and the preparation technology does not need fire prevention and explosion prevention, adopts open type spray drying equipment, saves one half of equipment investment, does not need chilled water and nitrogen, and greatly reduces the cost for production operation.