Method for stripping two-dimensional material and synchronously producing high-purity lithium hydroxide by utilizing salt lake brine
A technology of two-dimensional materials and salt lake brine, applied in nanotechnology, electrodes, nanotechnology, etc. for materials and surface science, can solve the problems of small size of molybdenum disulfide sample, complicated operation, poor repeatability, etc., and achieve low price , high purity and uniform thickness
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Embodiment 1
[0038] 1) MoS 2 The powder and PVDF are uniformly mixed at a mass ratio of 5:1, then added to an NMP organic solvent to form a uniformly dispersed turbid solution with a mass fraction of 5% and stirred. After the stirring is completed, the turbid solution is evenly coated on the foamed nickel substrate, at 100°C MoS was obtained after drying under vacuum for 12 h at 2 electrode sheet.
[0039] 2) Mix and stir lanthanum lithium titanate powder, PVDF-HFP, and DMAC at a mass ratio of 1:2:6 to form a sol, and then coat it on a glass plate with a thickness of 20 μm, and dry it at 60°C, and the drying is completed After that, it was vacuum dried at 70° C. for 24 hours to obtain a lanthanum lithium titanate solid electrolyte membrane with a thickness of 13 μm.
[0040] 3) In the H-type electrolytic cell, the MoS 2 The electrode sheet is used as the cathode, and the solute added to the cathode electrolytic cell is LiPF 6 , the solvent is ethylene carbonate, the solute concentratio...
Embodiment 2
[0044] Will WS 2 The powder and PVDF are uniformly mixed at a mass ratio of 7:1, and then added to NMP organic solvent to form a uniformly dispersed turbid solution with a mass fraction of 2% and stirred. After the stirring is completed, the turbid solution is evenly coated on the foamed copper substrate, 70°C WS was obtained after vacuum drying at high temperature for 24 h 2 electrode sheet.
[0045] 2) Mix lithium titanium aluminum phosphate powder, PVDF-HFP, and DMAC at a mass ratio of 1:1:8 to form a sol, then coat it on a ceramic plate with a thickness of 50 μm, and dry it at a temperature of 50°C. After that, it was dried in vacuum at 100° C. for 24 hours to obtain a lithium titanium aluminum phosphate solid electrolyte membrane with a thickness of 42 μm.
[0046] 3) In the H-type electrolytic cell, the WS 2 The electrode sheet is used as the cathode, and the solute added to the cathode electrolytic cell is LiClO 4 , the solvent is diethyl carbonate and dimethyl carb...
Embodiment 3
[0050] Mix MoSe2 powder and PVDF uniformly at a mass ratio of 10:1, then add to NMP organic solvent to form a uniformly dispersed turbid solution with a mass fraction of 10% and stir. After the stirring is completed, the turbid solution is evenly coated on the foamed copper substrate. The MoSe2 electrode sheet was obtained after vacuum drying at 100° C. for 24 h.
[0051] 2) Mix and stir LLZO powder, PVDF-HFP, and DMAC at a mass ratio of 4:1:10 to form a sol, then coat it on a plexiglass plate with a thickness of 100 μm, and dry it at 30°C. Vacuum drying at 70° C. for 24 hours to obtain a LLZO solid electrolyte membrane with a thickness of 87 μm.
[0052] 3) In the H-type electrolytic cell, the MoSe2 electrode sheet is used as the cathode, and the solute added to the cathode electrolytic cell is LiBF 4 , the solvent is ethyl methyl carbonate and propylene carbonate in a ratio of 1:1, and the solute concentration is an electrolyte solution of 2mol / L, which is continuously fed ...
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