Negative active material, method of preparing the same, negative electrode for lithium secondary battery including negative active material, and lithium secondary battery including negative electrode
US9306216B2 · kind B2 · utility
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20Claims
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Key dates
| Filing date | Nov 6, 2012 |
| Grant date | Apr 5, 2016 |
| Priority date | — |
| Expiry date | Oct 19, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/70
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A negative active material for a rechargeable lithium battery includes a Si—Al—Fe alloy represented by Formula 1. The Si—Al—Fe alloy includes a Si phase and an alloy phase, and the alloy phase includes Si, Al, and Fe in a ratio of atomic percentages of about 3:3:2:xSi-yAl-zFe Formula 1wherein 50 at %≦x≦90 at %, 5 at %≦y≦30 at %, 5 at %≦z≦30 at %, and x+y+z=100 at %.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.