Self-heating gas sensor, gas-sensitive material, preparation method for same, and applications thereof
US12253486B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jan 26, 2021 |
| Grant date | Mar 18, 2025 |
| Priority date | — |
| Expiry date | Oct 8, 2041 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2006/40
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A gas-sensitive material, a preparation method therefore and an application thereof, and a gas sensor using the gas-sensitive material are provided. The gas-sensitive material is a carbon material-metal oxide composite nanomaterial formed by compounding a carbon material and metal oxides. The content of the carbon material is 0.5˜20 wt. % and the content of the metal oxides is 80˜99.5 wt. %; the metal oxides contain tungsten oxide and one or more selected from tin oxide, iron oxide, titanium oxide, copper oxide, molybdenum oxide, and zinc oxide; the metal oxides are formed on the carbon material in the form of nanowires, and the nanowires are tungsten oxide-doped nanowires. The gas-sensitive material has reduced resistance, is capable of responding to various gases at a reduced working temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.