Ceramic-ceramic nanocomposite electrolyte
US7618731B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 17, 2004 |
| Grant date | Nov 17, 2009 |
| Priority date | — |
| Expiry date | Aug 20, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A ceramic-ceramic nanocomposite electrolyte having enhanced conductivity is provided. The nancomposite electrolyte is formed from chemically stabilized zirconia such as yttria stabilized zirconia or scandia stabilized zirconia and a heterogeneous ceramic dopant material such as Al2O3, TiO2, MgO, BN, or Si3N4. The nanocomposite electrolyte is formed by doping the chemically stabilized zirconia with the ceramic dopant material and pressing and sintering the composite. The resulting electrolyte has a bulk conductivity of from about 0.10 to about 0.50 S/cm at about 600° C. to about 900° C. and may be incorporated into a solid oxide fuel cell.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.