Metal air cathode and electrochemical cells made therewith
US6248476A · kind A · utility
Inventors
Key dates
| Filing date | Jun 25, 1999 |
| Grant date | Jun 19, 2001 |
| Priority date | — |
| Expiry date | Jun 25, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A novel air cathode and the metal air cells made therewith are provided. With a conductive air diffusion layer of carbon black and polymeric materials, the current collecting substrate is disposed on one side of the air diffusion layer while the active layer is on the other side of the air diffusion layer. The current collecting substrate is in good contact with both the air diffusion layer and the cathode can of the cell, and it has absolutely no direct contact with the active layer. The performance of cells made therewith are significantly improved in high drain discharge situations and the internal impedance of the cells is reduced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.