Layered silicate-containing colloidal electrolyte for storage batteries and preparation method thereof
A colloidal electrolyte and layered silicate technology, applied in the field of electrolytes, can solve problems such as low glue filling efficiency, poor battery performance, and difficult glue filling, and achieve the effects of increasing glue filling speed, improving fluency, and improving wettability
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Embodiment 1
[0023] Mix 2.0g with a specific surface area of 500m under constant stirring 2 / g gas phase nano-SiO 2 Gradually added to 92.95g of dilute sulfuric acid solution with a concentration of 35%, heated up to 50°C and stirred vigorously for 2 hours to obtain dispersion A; under constant stirring, 0.05g of montmorillonite with a size of 0.1 micron was added to dispersion A , continue vigorously stirring at 50°C for 12 hours, lower to room temperature, and obtain dispersion B; under stirring conditions, dissolve 1 g of polyvinyl alcohol 1799, 0.5 g of sodium sulfate, and 3.5 g of phosphoric acid into dispersion B, and continue stirring for 2 hours, a colloidal electrolyte with good thixotropic fluidity and gel stability was obtained. The viscosity of the control colloid without montmorillonite is 1073mPa.s, and the viscosity of the colloid after adding montmorillonite is 219mPa.s.
Embodiment 2
[0025] Mix 10g with a specific surface area of 200mm under constant stirring 2 / g gas phase nano-SiO 2 Gradually added to 78.37g of dilute sulfuric acid solution with a concentration of 40%, heated to 50°C and stirred vigorously for 4 hours to obtain dispersion A; under constant stirring, 0.5g of montmorillonite with a size of 2 microns was added to dispersion A , continue to stir vigorously at 50°C for 6 hours, lower to room temperature, and obtain dispersion B; under stirring conditions, dissolve 2.5g of tartaric acid, 3.0g of sodium sulfate, 0.13g of cobalt sulfate, and 5.5g of phosphoric acid into dispersion B, Stirring was continued for 2 hours to obtain a colloidal electrolyte with good thixotropic fluidity and gel stability. The viscosity of the control colloid without montmorillonite is 2465mPa.s, and the viscosity of the colloid after adding montmorillonite is 438mPa.s.
Embodiment 3
[0027] Under constant stirring, 5.0g specific surface area is 300m 2 / g gas phase SiO 2 Gradually added to the 82.6g dilute sulfuric acid solution with a concentration of 45%, the temperature was raised to 55° C. and stirred vigorously for 8 hours to obtain a dispersion A; under constant stirring, 0.4 g of kaolin with a size of 0.5 microns was added to the dispersion A, in Continue to vigorously stir at 55°C for 8 hours, cool down to room temperature, and obtain dispersion B; under stirring conditions, dissolve 5.0 g of glucose, 2.5 g of sodium sulfate, and 4.5 g of phosphoric acid into dispersion B, and continue stirring for 3 hours to obtain Colloidal electrolyte with good thixotropic fluidity and gel stability. The viscosity of the control colloid without adding kaolin is 1574mPa.s, and the viscosity of the colloid after adding kaolin is 392mPa.s.
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