Process for forming a nickel foil with controlled and predetermined permeability to hydrogen
US4290858A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 23, 1980 |
| Grant date | Sep 22, 1981 |
| Priority date | — |
| Expiry date | Sep 23, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S204/13
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The present invention provides a novel process for forming a nickel foil having a controlled and predetermined hydrogen permeability. This process includes the steps of passing a nickel plating bath through a suitable cation exchange resin to provide a purified nickel plating bath free of copper and gold cations, immersing a nickel anode and a suitable cathode in the purified nickel plating bath containing a selected concentration of an organic sulfonic acid such as a napthalene-trisulfonic acid, electrodepositing a nickel layer having the thickness of a foil onto the cathode, and separating the nickel layer from the cathode to provide a nickel foil. The anode is a readily-corrodible nickel anode. The present invention also provides a novel nickel foil having a greater hydrogen permeability than palladium at room temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.