Process for producing an activated oxygen gas sensor element
US4169777A · kind A · utility
12Cited by
1References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 13, 1978 |
| Grant date | Oct 2, 1979 |
| Priority date | — |
| Expiry date | Sep 13, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/50
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An activated oxygen gas sensor element having an increased voltage output under rich gas conditions, short switching response and reduced internal resistance is produced by chemically treating the inner conductive catalyst electrode of the sensor element with an inorganic acid or acid salt and current activating the outer conductive catalyst electrode by applying a direct current to the sensor element, with the outer electrode as an anode, while the outer electrode is at an elevated temperature and in the presence of a nonoxidizing atmosphere.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.