Figure 7

(a) Schematic illustration of the irreversible Li2O converse to Li+ for the Fe2O3/MoS2 composite. Due to high electrochemical activity of Mo metal clusters and efficient contact between Mo metal clusters and the irreversible Li2O, the irreversible Li2O can converse to Li+ after the charging process, and (b) Schematic illustration of the irreversible Li2O converse to Li+ for the physical mixture Fe2O3+MoS2. The conversion of the irreversible Li2O to Li+ will be greatly suppressed because the efficient contact between Mo and Li2O is more difficultly available.