Carbon product rich in lithium for use as negative electrode in a lithium cell
US6403260B1 · kind B1 · utility
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8Claims
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Key dates
| Filing date | May 8, 2000 |
| Grant date | Jun 11, 2002 |
| Priority date | — |
| Expiry date | May 8, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/70
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The invention relates to a lithium-rich carbonaceous substance which can be used as a negative electrode in a lithium accumulator.This substance has the following formula:LiNaxCyOz  (I)in which x, y and z are such that0.4≦x≦0.62.5≦y≦3.50.2≦z≦1It can be prepared by the insertion of lithium electrochemically in a graphite-sodium-oxygen compound.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.