Discharge characteristics of lithium-ion accumulators with carbon electrodes

Lithium-ion accumulators in which fulleride-lithium composite films of hexagonal graphite and turbostratic graphite (TG) plates were used as negative electrodes are the subject for research, described in the article. The metallic lithium plates were used as positive electrodes in all the accumulators. Wile using turbostratic graphite as anode, the maximum value of discharge current was observed, which 1,5 times excided the maximum current for hexagonal graphite. By results of X-ray photoelectron spectroscopy it was determined that the thickness of active layer (the layer of anode which was intercalated lithium ions) for turbostratic graphite was 600 nm. The maximum value of the specific capacity was observed underthe use of turbostratic graphite as anode and came up to 244 mA•h/g.