Optimizing carbon/LiMn2O4 rechargeable Li-ion cells: the effect of electrode fabrication and mass balance on cell performance

In this work we present first cycle charge/discharge performance of synthet ic graphite and petroleum coke and the influence of the binder used for the preparation of the electrodes on the irreversible capacity losses and an i nvestigation of LiMn2O4/graphite and LiMn2O4/petroleum coke cells in respec t to the cathode to anode electrode mass balance using three-electrode cell s. The irreversible capacity of synthetic graphite electrodes varies from a bout 85 to 215 mAh/g depending on the binder material. Li-ion cells assembl ed after the optimization of the cathode/anode material mass ratio r showed first discharge capacities of about 100 and 102 mAh/g, for LiMn2O4/graphit e and LiMn2O4/petroleum coke respectively. (C) 2000 Elsevier Science B.V. A ll rights reserved.