Spherical carbonaceous mesophase

The term spherical carbonaceous mesophase describes the morphology of carbonaceous mesophase which is formed in the isotropic pitch matrix. The spherical carbonaceous mesophase usually has a lamellar structure consisting of flat aromatic molecules arranged in parallel layers which are perpendicular to the sphere/isotropic phase interface as described by Brooks and Taylor. On coalescence this spherical mesophase loses its characteristic morphology and is converted to the bulk mesophase. 

Yazami et al. [128, 129] studied the mechanism of electrolyte reduction on the carbon electrode in polymer electrolytes. Carbonaceous materials, such as cokes from coal pitch and spherical mesophase and synthetic and natural graphites, were used. The change in with composi-... 

Yazami et al. [128, 129] studied the mechanism of electrolyte reduction on the carbon electrode in polymer electrol) es. Carbonaceous materials, such as cokes from coal pitch and spherical mesophase and synthetic and natural graphites, were used. The change in with composition on Lijj.C5 electrodes was studied for three ranges of x in an Li/POE-LiX/carbon cell [128]. The first step in the lithium intercalation (0intercalated lithium is irreversible in the 1.5-0.5 V range. In the second step, (Ax l), lithium intercalates mainly into the coke and the film does not grow significantly, so a slow increase in is observed. In the third step, excess lithium is formed on the surface of the coke, and this induces a further increase in the film thickness and its resistance. 

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