Carbon negative electrode materials and lithium secondary cells containing the same
US5658692A · kind A · utility
5Cited by
5References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 11, 1995 |
| Grant date | Aug 19, 1997 |
| Priority date | — |
| Expiry date | Aug 11, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Disclosed is a carbon negative electrode material containing microparticles of hard carbon. The pores in the carbon microparticles have an inlet diameter such that an organic solvent in an electrolyte of a lithium secondary cell is substantially impermeable and that lithium ions are permeable. Use of such carbon negative electrode material as a negative electrode enables to provide a lithium secondary cell with excellent cell capacity, in which charge capacity and discharge capacity are improved and irreversible capacity is minimized.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.