A kind of gel electrolyte and its preparation method and application
A gel electrolyte and electrolyte technology, which is applied in instruments, nonlinear optics, optics, etc., can solve the problems of no electrochromic performance parameters and complex gel electrolyte components, and achieve uniform gel electrolyte and adhesion. Good, fast color change effect
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Embodiment 1
[0057] Use LiClO 4 Prepare an electrolyte solution with a concentration of 1mol / L with PC. Add 10wt% polymethyl methacrylate and 0.5wt% hydrophobic nano fumed silica to the electrolyte solution, and use 1000r / min magnetic stirring for 45min in an oil bath at 90°C to mix into a gel electrolyte. After cooling to room temperature, add spacers on both sides of the ITO conductive glass, control the thickness to 100um, spread the gel electrolyte evenly on the surface of the ITO conductive glass, cover the ITO conductive glass with an electrochromic layer and apply pressure to it, Squeeze out excess gel electrolyte material and remove air bubbles in the gel electrolyte. After confirming that there are no air bubbles in the gel electrolyte, the electrochromic device is packaged with UV-curable glue. After the encapsulation operation is completed, it is placed in an oven at 80° C. for heat treatment for 30 minutes to prepare an electrochromic device.
[0058] Electrochemical workst...
Embodiment 2
[0062] Use LiClO 4 Prepare an electrolyte solution with a concentration of 1mol / L with PC. Add 20wt% polymethyl methacrylate and 0.5wt% hydrophobic nano fumed silica to the electrolyte solution, and use 1000r / min magnetic stirring for 45min in an oil bath at 90°C to mix into a gel electrolyte. The same method as in Example 1 was used to prepare an electrochromic device containing a gel electrolyte.
[0063] Electrochemical workstation (Shanghai Chenhua, CHI760D) was used to characterize the electrochemical performance of the electrolyte, according to the calculation formula of electrical conductivity σ=L / R b A, the thickness of the electrolyte is 1.4cm, and the contact area between the electrolyte sample and the electrode is 4cm 2 , the bulk resistance of Example 2 is 76.49Ω, and the ion conductivity is 4.58mS / cm. Gel electrolyte at 20°C, 300s -1 The absolute viscosity at the shear rate is 2.21Pa·s; the absolute viscosity at 30°C and 300s-1 shear rate is 1.07Pa·s. The co...
Embodiment 3
[0065] Use LiClO 4Prepare an electrolyte solution with a concentration of 1mol / L with PC. Add relative electrolyte content 5wt% polyvinylidene fluoride-hexafluoropropylene and 5wt% polymethyl methacrylate and 0.5wt% hydrophobic nano fumed silica in the electrolyte solution, in the oil bath of 105 ℃ Use 1000r / min magnetic stirring for 45min to mix into a gel electrolyte. The gel-containing electrolyte was prepared by the same method as in Example 1.
[0066] Electrochemical workstation (Shanghai Chenhua, CHI760D) was used to characterize the electrochemical performance of the electrolyte, according to the calculation formula of electrical conductivity σ=L / R b A, the thickness of the electrolyte is 1.4cm, and the contact area between the electrolyte sample and the electrode is 4cm 2 , the bulk resistance of Example 3 is 73.22Ω, and the ion conductivity is 4.78mS / cm. Gel electrolyte at 20°C, 300s -1 The absolute viscosity at the shear rate is 2.55 Pa·s. The absolute viscosi...
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