Negative active material for rechargeable lithium battery and method of preparing same
US6395427B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 29, 2000 |
| Grant date | May 28, 2002 |
| Priority date | — |
| Expiry date | Aug 29, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A negative active material for a rechargeable lithium battery which exhibits good discharge capacity and charge and discharge efficiency, and enables the use of all types of electrolytes. The active material includes a crystalline carbon core and a semi-crystalline carbon shell. The semi-crystalline carbon shell includes at least one element or a compound of at least two different types of elements, and has a turbostratic or half onion-sheath. The compound includes only element. The element serves graphitization catalyst and causes a change in a structure of surrounding carbon. In particular, the negative active material includes metal boride.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.