5 results about "Rubidium compound" patented technology

The present invention relates to a rubidium fluoro-scandium borate compound, a rubidium fluoro-scandium borate nonlinear optical crystal, and a preparation method and application thereof. The rubidium fluoro-scandium borate compound has a chemical formula Rb2ScB3O6F2, does not contain a symmetry center and has a molecular weight of 382.33 g / mol. The rubidium fluoro-scandium borate nonlinear optical crystal belongs to the monoclinic crystal system, and belongs to the non-centrosymmetric space group P21, and the unit cell parameters are: a=4.0372(10) Å, b=11.800(3) Å, c=8.823(2) Å, α=γ=90°, β=98.327(11)°, Z=2. The present invention adopts a high-temperature vacuum packaging method or a solid-state synthesis method to prepare rubidium fluoro-scandium borate compounds. The present invention adopts a fluxing agent method to prepare a rubidium fluoro-scandium borate nonlinear optical crystal, which have the advantages of short absorption cutoff edge, large nonlinear optical effect, good thermal stability, and stable physical and chemical properties. The rubidium fluoro-scandium borate nonlinear optical crystal of the present invention can be used to fabricate nonlinear optical devices, which have important applications in fields such as optics, military, laser lithography, and communication, etc.

The invention discloses a method for extracting lithium and rubidium in mica ore through low-temperature roasting of organic acid. The lithium and the rubidium in the mica ore are selectively extracted through low-temperature ore phase directional transformation of organic acid co-roasting. The preparation method comprises the following steps: adding organic acid into fine-grain mica ore, sufficiently and uniformly mixing, and then roasting and curing at low temperature, so that the mica ore is subjected to ore phase reconstruction, and four elements of lithium, rubidium, aluminum and iron are subjected to phase transfer to be converted into soluble salt to obtain a cured and roasted product; carrying out secondary heating roasting on the cured roasting product, carrying out element phase transfer again, and converting organic acid salt in the cured roasting product into water-insoluble aluminum oxide, iron oxide and a soluble organic acid lithium rubidium compound to obtain a secondary roasting product; and finally, lithium and rubidium can be selectively leached through water leaching treatment. The whole process is simple, the lithium and rubidium leaching rate is high, follow-up complex impurity removal treatment is not needed, efficient leaching and impurity removal are synchronously achieved, and a new strategy with prospects is expected to be provided for efficient utilization of mica ore resources.

The application discloses a method for extracting lithium and rubidium in mica ore by low-temperature calcination with organic acid, and the method is characterized by the following steps: adding organic acid into fine-grained mica ore, mixing thoroughly, and then performing low-temperature calcination and curing to make the mica ore perform mineral phase reconstruction, so that the phase transition of lithium, rubidium, aluminum and iron is realized to form soluble salts, and a cured calcination product is obtained; the cured calcination product is subjected to secondary temperature-raising calcination, and the phase transition of elements is performed again to convert the organic acid salt in the cured calcination product into water-insoluble aluminum oxide, iron oxide and soluble organic acid lithium rubidium compound, and a secondary calcination product is obtained; and finally, lithium and rubidium can be selectively leached by water immersion treatment. The whole process is simple, the leaching rate of lithium and rubidium is high, and subsequent complex impurity removal treatment is not needed, so that the efficient leaching and impurity removal are simultaneously realized, and a promising new strategy for efficient utilization of mica ore resources is provided.

The invention discloses a tellurium rubidium tungstate compound, a tellurium rubidium tungstate nonlinear optical crystal and a preparation method and application of the tellurium rubidium tungstate nonlinear optical crystal. The tellurium rubidium tungstate nonlinear optical crystal is prepared by adopting a fluxing agent method, the chemical formula of the tellurium rubidium tungstate nonlinear optical crystal is Rb2TeW3O12, the tellurium rubidium tungstate nonlinear optical crystal is of a non-centrosymmetric structure, the tellurium rubidium tungstate nonlinear optical crystal belongs to a trigonal system, the space group is P31c, and unit cell parameters are alpha = beta = 90 degrees, gamma = 120 degrees and Z = 2. The nonlinear optical crystal has the characteristics of wide transmission wave band range, perfect coverage of 1-5 [mu] m on a high-transmission wave band, large laser damage resistance threshold, large frequency doubling effect, moderate birefringence and the like, so that the nonlinear optical crystal has wide application prospects in mid-infrared laser output and photoelectric device preparation.

This invention discloses a rubidium / cesium-containing low-temperature battery electrolyte and its battery. The electrolyte comprises cesium and / or rubidium compounds, film-forming additives, lithium or sodium salts, and an organic solvent; the total molar concentration of the cesium and / or rubidium compounds is 0.3-1 mol / L; the content of the film-forming additives is 0.5-5 wt%; and the content of the lithium or sodium salts is 0-15 wt%. This invention fully utilizes the positive effects of rubidium and cesium compounds. By adding cesium and / or rubidium compounds, it effectively suppresses the side reactions of carbonate solvent co-intercalation at the negative electrode, reduces the barrier to desolvation of active ions, and extends the cycle life of the battery under low-temperature conditions. Furthermore, the addition of high concentrations of rubidium / cesium compounds lowers the glass transition temperature of the electrolyte, improves its fluidity and viscosity, increases its conductivity, and provides better migration performance of active ions, suppressing dendrite formation, thereby improving the low-temperature rate performance of the battery.