Method of producing an electrode layer on a solid oxide electrolyte of a solid state fuel cell
US5803934A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 20, 1996 |
| Grant date | Sep 8, 1998 |
| Priority date | — |
| Expiry date | Feb 20, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49115
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Vanadium doping has been found to increase the sinterability of La.sub.x Ca.sub.y CrO.sub.3 (x+y=1) while retaining its high temperature electrical and chemical properties. Specimens of La.sub.x Ca.sub.y CrO.sub.3 with about 2 mol % V were sintered at 1,300.degree. to 1,450.degree. C. for 2 to 8 hours to achieve more than 92% theoretical density, as compared to less than 75% for those specimens not containing V. The electrical conductivity of La.sub.0,76 Ca.sub.0,26 CrO.sub.3 +2 mol % V in 10.sup.-16 and 1 atm of O.sub.2, was measured to be 12 and 30 S/cm, respectively. Preliminary experiments with tape cast laminates and spray coated specimens give indication that La.sub.x Ca.sub.y CrO.sub.3 +V can be sintered on YSZ with good adherence between the two materials.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.