Material for negative electrode and nonaqueous-electrolyte battery incorporating the same
US6300013A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 13, 2000 |
| Grant date | Oct 9, 2001 |
| Priority date | — |
| Expiry date | Apr 13, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A material for a negative electrode capable of preventing change in the volume of an active material occurring when lithium is doped/dedoped to improve resistance against cycle operations. A material for a negative electrode contains a mixture of a non-carbon material and a carbon material, wherein when an assumption is made that the average particle size of the non-carbon material is R.sub.M and the average particle size of the carbon material is R.sub.C, the ratio R.sub.M /R.sub.C is not higher than one, and when an assumption is made that the weight of the non-carbon material is W.sub.M and the weight of the carbon is W.sub.C, the ratio W.sub.M /W.sub.C is not higher than one or a mixture of a silicon compound and a carbon material, wherein when an assumption is made that the average particle size of the silicon compound is R.sub.Si and the average particle size of the carbon material is R.sub.C, the ratio R.sub.Si /R.sub.C is not higher than one.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.