Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1295198 | Journal of Power Sources | 2006 | 7 Pages |
Abstract
We found anomalous behaviors during lithium electrochemical intercalation into graphite in the entropy curve and the crystal structure, especially, during the stages from 2 to 1 transition at x = 0.5 in LixC6. The entropy first decreases monotonously, then re-increased sharply at the transition. The average interlayer spacing displays a hysteresis during intercalation and de-intercalation and departs from linearity. The results are discussed in relation with a contribution of the vibrational entropy and possible occurrence of intermediary phase(s) between the two lithium-rich intercalation stages.
Related Topics
Physical Sciences and Engineering
Chemistry
Electrochemistry
Authors
Rachid Yazami, Yvan Reynier,