Preparation method of electrochromic glass device

By using nanospherical silica templates to prepare hollow spherical WO3 electrochromic layer and NiO counter electrodes in electrochromic glass devices, the problems of discoloration unevenness and local defects are solved, and the improvement of long-term uniformity and stability is achieved.

CN120423787AActive Publication Date: 2025-08-05JIANGSU SILE TECH CO LTD
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Patent Information

Application Number
CN202510933733.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-07-08
Publication Date
2025-08-05
Estimated Expiration
2045-07-08

AI Technical Summary

Technical Problem

During the use of existing electrochromic glass devices, the discoloration is correspondingly uneven, and as the service life is extended, the local defect problem is aggravated.

Method used

Using nanospherical silicon dioxide as a template, a transparent conductive layer of indium tin oxide was deposited by magnetron sputtering to prepare a hollow spherical WO3 electrochromic layer, and a NiO counter electrode was deposited on its surface. It was encapsulated using liquid electrolyte and epoxy resin to form a uniform electrochromic glass device.

Benefits of technology

It improves the long-term uniformity and stability of electrochromic glass devices, reduces the response differences caused by uneven ion mobility rate, alleviates the conductive network fracture caused by particle rupture, and improves the wetting effect and electric field uniformity.

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Abstract

The invention belongs to the technical field of optical glass. The invention relates to an electrochromic glass device, in particular to a preparation method of the electrochromic glass device. The preparation method comprises the following specific preparation steps: cleaning the surface of a glass substrate, and depositing an indium tin oxide transparent conductive layer on the surface of the glass substrate by adopting magnetron sputtering; the preparation method comprises the following steps: by taking nano spherical silicon dioxide as a template, dispersing the nano spherical silicon dioxide in an ethanol solution, then adding a sodium tungstate solution, then adjusting the pH value to 2-3, carrying out a stirring reaction, and then cleaning with a sodium hydroxide solution to remove the template so as to obtain a hollow spherical precursor dispersion liquid; coating the hollow spherical precursor dispersion liquid on the surface of the transparent conductive layer in a spin coating mode, drying and annealing; preparing a liquid electrolyte: taking propylene carbonate as a solvent, and taking lithium perchlorate as an electrolyte lithium salt; niO is deposited on the surface of the WO3 electrochromic layer to serve as a counter electrode through magnetron sputtering; epoxy resin is adopted to package the edge, after liquid electrolyte is injected, internal residual bubbles are removed through hot pressing, and the product is obtained.
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