We have studied the relationship between reversible capacity (Q(rev)) of gr
aphite materials for lithium ion battery anode and their fundamental physic
al properties, such as interlayer spacing d(infinity 2), crystalline sizes
along the c-axis and the a-axis, Le and La, respectively, obtained by X-ray
diffraction (XRD), particle size, R value (intensity ratio of a peak inten
sity around 1360 cm(-1) and that around 1600 cm(-1)) by Raman spectroscopy
and the amount of impurities. The Q(rev) decreased with increasing current
density and in charge-discharge measurement. The capacity ratio (Q(ratio))
to Q(rev) for lithium extraction depends on the Raman R value. We have foun
d that the rate capability for the Q(rev) was influenced by the structure o
f graphite defined by Raman parameter (R value).