Lithium peroxide primary element
US4504561A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 18, 1980 |
| Grant date | Mar 12, 1985 |
| Priority date | — |
| Expiry date | Jul 18, 2000 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01M12/04
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In a galvanic primary element of the system Li/H.sub.2 O.sub.2, the aqueous cathode depolarizer H.sub.2 O.sub.2 is fixated as a polyurethane gel. It can thereby be controlled and caused to react with the anode metal in accordance with the current drain requirements. This is accomplished using a ram to press the gel toward a conductor which covers the lithium anode, which may take the form of a metal grid and/or a gas diffusion electrode. The oxygen which forms in the working layer through catalytic decomposition of hydrogen peroxide creates a gas bubble when the current is interrupted or the ram is stopped, thereby interrupting the further supply of hydrogen peroxide to the catalyst.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.