Article ID Journal Published Year Pages File Type
1295198 Journal of Power Sources 2006 7 Pages PDF
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
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