Lead oxide-coated electrode for use in electrolysis and process for producing the same
US4822459A · kind A · utility
5Cited by
2References
14Claims
0Family size
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Inventors
Key dates
| Filing date | Aug 31, 1987 |
| Grant date | Apr 18, 1989 |
| Priority date | — |
| Expiry date | Aug 31, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/3154
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A lead oxide-coated electrode for use in electrolysis is disclosed, which comprises a primary layer comprising platinum and/or platinum oxide, an intermediate layer comprising .alpha.-PbO.sub.2, and a coating layer comprising .beta.-PbO.sub.2 successively coated on a substrate comprising a corrosion resistant metal. The electrode has a strong and durable lead oxide coating firmly bonded to the substrate, does not suffer from passivation, resistance increase, etc. and can be used stably for a long time at high current density. A process for producing the electrode is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.