Silicon-silicon oxide-lithium composite, making method, and non-aqueous electrolyte secondary cell negative electrode material
US7776473B2 · kind B2 · utility
39Cited by
6References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 22, 2007 |
| Grant date | Aug 17, 2010 |
| Priority date | — |
| Expiry date | Mar 22, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A silicon-silicon oxide-lithium composite comprises a silicon-silicon oxide composite having such a structure that silicon grains having a size of 0.5-50 nm are dispersed in silicon oxide, the silicon-silicon oxide composite being doped with lithium. Using the silicon-silicon oxide-lithium composite as a negative electrode material, a lithium ion secondary cell having a high initial efficiency and improved cycle performance can be constructed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.