Method for producing hexagonal tungsten oxide and method for producing electrochromic device including the same
US11873232B2 · kind B2 · utility
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Key dates
| Filing date | Sep 16, 2021 |
| Grant date | Jan 16, 2024 |
| Priority date | — |
| Expiry date | Jan 12, 2042 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2006/60
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Provided is a method for producing hexagonal tungsten oxide, the method including preparing an alkaline solvent having a pH of 8 to 9, which contains at least one of water or alcohol, adding tungsten chloride to the alkaline solvent to form a first reaction solution, adding an additive to the first reaction solution to form a second reaction solution, and adding strong acid to the second reaction solution to form nanoparticles. The additive includes any one of an amine compound having 1 to 8 carbon atoms or an aliphatic hydrocarbon derivative having 10 or more carbon atoms.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.