Anode for lithium secondary battery and lithium secondary battery using the anode
US8728664B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 30, 2004 |
| Grant date | May 20, 2014 |
| Priority date | — |
| Expiry date | Feb 21, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/70
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An anode for a lithium secondary battery contains an active material and a binder mixture. The active material can occlude or liberate lithium. The binder mixture includes a synthetic rubber-based latex-type binder, a cellulose-based thickener, and an acrylamide-based water-soluble polymer. The adhesive forces among electrode materials and between the electrode materials and a current collector are greatly increased. As a result, the number of battery defects, which are caused by low adhesive forces in the electrode plate manufacturing process, in particular, a rolling process, can be unexpectedly decreased. At the same time, high-rate discharge characteristics can be improved by decreasing the resistance at the interface between the electrode materials and the current collector.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.