Niobium-doped titanium membranes
US5028568A · kind A · utility
30Cited by
4References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 5, 1989 |
| Grant date | Jul 2, 1991 |
| Priority date | — |
| Expiry date | Jul 5, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2111/00801
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A metal oxide particulate membrane is made more electrically conductive, and thus more suitable for electrochemical cells by the incorporation into the membrane of a dopant element. The dopant is dissolved in an alcohol and then incorporated in the sol-gel process used to form the particulate metal oxide membrane. The invention is exemplified by a niobium doped titanium dioxide ceramic membrane which has good porosity while having a conductivity several orders of magnitude higher than a similar membrane made without incorporating the niobium dopant.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.