Dispersing mixer system used in producing slurry containing carbon and producing method of slurry containing carbon
A manufacturing method and mixing system technology, applied in the direction of mixing methods, mixers, fluid mixers, etc., can solve the problems of coating voids, difficulty, poor dispersion and solubility, etc., to reduce the mixing of air bubbles and simplify degassing Process effect
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[0192] [Example 1]
[0193] (High rate discharge test)
[0194] Table 1 shows that LiFePO was used as the slurry material used in the production of electrodes for non-aqueous electrolyte secondary batteries, that is, a material that adsorbs and releases alkali metal ions. 4 (91wt%), carbon (carbon black (2wt%), carbon (carbon nanotubes) (2wt%) with an aspect ratio of 10 to 1000 fibrous carbon powder and an average fiber diameter of 1 to 500 nm) and water-based binder (CMC (carboxymethyl cellulose) (5 wt%)) (solid content ratio: 31 wt%), using water as the solvent R, and using the dispersion mixing system 100 equipped with the dispersion mixing pump Y to produce a slurry.
[0195] In addition, Figure 10(a) and Figure 10(b) show electron micrographs of the electrode surface and electrode cross section coated with carbon-containing paste (Figure 10(a) is based on a conventional batch-type multi-axis mixer Figure 10(b) is a photo of the method of manufacturing carbon-containing paste ba...
Example Embodiment
[0203] [Example 2]
[0204] (High rate discharge test)
[0205] Table 2 shows that LiFePO was used as the slurry material used in the production of electrodes for non-aqueous electrolyte secondary batteries, that is, a material that adsorbs and releases alkali metal ions. 4 (89wt%), carbon (carbon black (1.5wt%), fibrous carbon powder with an aspect ratio of 10 to 500, carbon nanotubes with an average fiber diameter of 150nm (1.5wt%), activated carbon (3wt%) ) And an aqueous binder (acrylate (5 wt%)) (solid content ratio: 37 wt%), water was used as the solvent R, and the dispersion mixing system 100 equipped with the dispersion mixing pump Y described above was used to produce a slurry.
[0206] The test electrode (positive electrode) coated the obtained slurry on an aluminum foil with a thickness of 20 μm and dried, then the aluminum foil and the coating film were adhered and bonded by a roll press, and then heated (in a reduced pressure state, 150 ℃ for more than 12 hours) to obta...
Example Embodiment
[0224] [Example 3]
[0225] Table 3 shows that as the slurry material used in the production of the electrode for the non-aqueous electrolyte secondary battery, that is, the material that adsorbs and releases alkali metal ions, LiMn is used 0.33 Ni 0.33 Co 0.33 O 2 (91wt%), carbon (carbon black (2wt%), fibrous carbon powder with an aspect ratio of 10 to 500, carbon (carbon nanotubes) (2wt%) with an average fiber diameter of 150nm) and water-based binder (acrylic acid) Ester (5wt%)) (solid content ratio: 32wt%), water was used as the solvent R, and the dispersion mixing system 100 equipped with the dispersion mixing pump Y described above was used to produce a slurry.
[0226] [table 3]
[0227]
[0228] The test electrode (positive electrode) coated the obtained slurry on an aluminum foil with a thickness of 20 μm and dried, then the aluminum foil and the coating film were adhered and bonded by a roll press, and then heated (in a reduced pressure state, 150 ℃ for more than 12 hours)...
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