A kind of preparation method of titanium series lithium ion sieve
A technology of lithium ion and titanium series, applied in the field of preparation of titanium series lithium ion sieve, can solve the problems of slow adsorption rate, unfavorable industrial application, poor adsorption capacity, etc., and achieve the effect of increasing adsorption capacity and enriching lithium ion channels
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Embodiment 1
[0015] The commercially available 0.1-0.2 μm TiO 2 Take 2 g of the powder, press it into a test piece with a diameter of 20 mm and a thickness of 3 mm under 8 MPa, and sinter it at 600 °C for 3 hours in an argon atmosphere to obtain TiO 2 Audition. After tightly wrapping the test piece with molybdenum mesh, the thin molybdenum wire was wound on the long molybdenum wire as the working electrode, the graphite rod was used as the counter electrode, and the mixture of LiCl and NaCl with a molar ratio of 2:1 was used as the electrolyte. In the atmosphere, the temperature is 500°C, the voltage is 3.2V, the cathodic polarization is 5 hours, and after the cathodic polarization is completed, the working electrode is anodically polarized, the voltage is 2.6, and the polarization time is 0.5 hours. After cooling to room temperature in the electrolytic cell, the product was taken out, washed with distilled water, dried in vacuum at 60°C, calcined in air at 750°C for 2 hours, and soaked i...
Embodiment 2
[0017] The commercially available 0.1-0.2 μm TiO 2 Take 5 g of the powder, press it into two test pieces with a diameter of 20 mm and a thickness of 5 mm under 5 MPa, and sinter at 600° C. for 2 hours in an argon atmosphere. After the test piece was tightly wrapped with stainless steel mesh, the stainless steel wire was wound on the long stainless steel wire as the working electrode, the graphite rod was used as the counter electrode, and the mixture of LiCl and KCl with a molar ratio of 1:1 was used as the electrolyte. In the atmosphere, the temperature is 600°C, the voltage is 2.8V, the cathodic polarization is 4 hours, and after the cathodic polarization is completed, the working electrode is anodically polarized, the voltage is 2.0V, and the polarization time is 1 hour. After the liquid level was cooled to room temperature in the electrolytic cell, the product was taken out, washed with distilled water, dried in vacuum at 60°C, calcined in air at 600°C for 3 hours, and soa...
Embodiment 3
[0019] The commercially available 0.1-0.2 μm TiO 2 , take 0.5 g, press it into a test piece with a diameter of 5 mm and a thickness of 1 mm under 10 MPa, and sinter at 600 ° C for 3 hours in an argon atmosphere. The test piece was wound with molybdenum wire to make a working electrode, a graphite rod was used as the counter electrode, and a mixture of LiCl, KCl and NaCl in a molar ratio of 1:1:1 was used as the electrolyte. In an argon atmosphere, the temperature was 400 °C, and the voltage It is 3.2V, and the cathode is polarized for 5 hours. After the cathodic polarization is completed, the working electrode is anodically polarized. The voltage is 1.5V, and the polarization time is 1.5 hours. The product was taken out at room temperature, washed with distilled water, dried in a vacuum at 60°C, calcined at 850°C in air for 1 hour, and soaked in 0.5mol / L hydrochloric acid for 24 hours to obtain a titanium-based lithium ion sieve material. The above materials were put into 20 ...
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