Electrode composition and design for high energy density cells
US5322746A · kind A · utility
48Cited by
4References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 2, 1992 |
| Grant date | Jun 21, 1994 |
| Priority date | — |
| Expiry date | Oct 2, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Nonaqueous electrolyte rechargeable cells may contain an excess of negative electrode material to improve the rechargeability. This excess of negative electrode material can form brittle alloys with noncorrosive current collector metals in positive electrodes at low cell voltages. The invention discloses that an excess of current collector material in the positive electrode directly opposite to the negative electrode improves the safety characteristics of the rechargeable cells during overdischarge and multiple voltage reversal abuses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.