Lithium Sulfide as Cathode Materials for Lithium-Ion Batteries: Advances and Challenges

Figure 1

(a) Charge-discharge profile of the Li₂S electrode in the initial three cycles. (b) CV curves of the Li₂S electrode. (c) Initial potential barrier at different current. (d) Overpotential at different current rates. (e) Initial charging process of Li₂S [9].

(a)

(b)

(c)

(d)

(e)