Porous hollow shell WO3/WS2 nanomaterial and method of preparing same
US10183863B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 4, 2015 |
| Grant date | Jan 22, 2019 |
| Priority date | — |
| Expiry date | Sep 21, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Provided is a method for the preparation of a porous hollow shell WO3/WS2 nanomaterial, comprising: (1) adding a hexavalent tungsten salt to a sol A comprising mesocarbon microbeads, and stirring to obtain a sol B; (2) drying and grinding the sol B, and then heating a resulting powder at 200-500° C. for 0.5-2 hours to obtain a porous hollow shell WO3 nanocrystalline material; (3) placing the porous hollow shell WO3 nanocrystalline material obtained by Step 2 and a sulfur powder separately in a vacuum furnace, controlling such that a degree of vacuum is −0.01 to −0.1 MPa and a temperature is 200-500° C., and reacting for 0.5-3 hours to obtain a WO3/WS2 porous hollow shell nanocrystalline material. Also provided is a porous hollow shell WO3/WS2 nanocrystalline material obtained by the method.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.