Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1519048 | Journal of Physics and Chemistry of Solids | 2006 | 5 Pages |
Abstract
We present a continuous static 7Li Nuclear Magnetic Resonance (NMR) experiment on a lithium/carbon battery while it is being charged and discharged. Two kinds of batteries are tested: one with a graphite electrode, the other with a carbon/carbon composite electrode. With graphite, all the intercalation stages give a NMR signature, even the early stages, difficult to isolate usually. The random, initial stage 1′ seems to occur all over the intercalation process. The response of the carbon/carbon composite electrode is quite different: it confirms the lack of a regular graphene structure and shows a slower diffusion for most of the lithium. The carbon black added for conductivity improvement does not appear to store lithium.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
Michel Letellier, Frédéric Chevallier, François Béguin,