LITHIUM-ION RECHARGEABLE CELLS WITH POLYACENIC SEMICONDUCTOR (PAS) AND LICOO2 ELECTRODES

Polyacenic semiconductor (PAS), heat-treated at 700 degrees C, has a l ithium intercalation capacity as high as 438 mAh g(-1) which is higher than the theoretical capacity of 372 mAh g(-1) for graphite. The elec trochemical behaviour of PAS is examined by studying Li/PAS and Li/gra phite cells. In a PAS or graphite anode, three reactions are distingui shed: (i) reaction of lithium with the Teflon binder; () decomposition of electrolyte, and (iii) intercalation of Li+ ions. Two laboratory c ells with liquid organic electrolyte or polymer electrolyte and PAS as the anode demonstrate that PAS is a promising anode material for lith ium-ion batteries.