Cathode electrode including a porous conductive material coated and/or filled with sulfur and/or a sulfur-containing organic compound and lithium battery containing the same
US7361431B2 · kind B2 · utility
35Cited by
12References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 19, 2002 |
| Grant date | Apr 22, 2008 |
| Priority date | — |
| Expiry date | May 9, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Disclosed is a cathode electrode having a cathode active material layer stacked on a current collector. The cathode active material layer includes a porous conductive material having a surface coated with sulfur and/or a sulfur-containing organic compound and/or pores filled with sulfur and/or a sulfur-containing organic compound. A lithium secondary battery employing the cathode electrode also is disclosed. The cathode electrode is structurally stable during charging and discharging since the structure of the cathode active material layer can be maintained even at the phase transition of sulfur during charging and discharging.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.