Negative electrode for a nonaqueous battery
US6998192B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 28, 2003 |
| Grant date | Feb 14, 2006 |
| Priority date | — |
| Expiry date | Oct 11, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A negative electrode for use in secondary battery with nonaqueous electrolyte having a high voltage and energy density and a superior cycle property, characterized in that the active material comprises composite carbon materials containing massive ball-shaped graphite particles, carbon fibers, and graphite flakes. The massive ball-shaped graphite particles provide porosity to the composite, the carbon fibers improve packing density, conductivity, and stiffness to prevent the body made thereof from swelling and decomposing, and the graphite flakes reduce friction in the mixture. An aqueous, non-fluorine-containing binder is used, along with a titanium negative substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.