Figure 3: Battery cycling stability.

(a) Discharge–charge curves of the Li-O2 cells with the P-HSC deposited onto CP cathode at different cycles. (b) Variation of voltage on the terminal of discharge of the Li-O2 cells with the P-HSC deposited onto CP cathode. (c) Discharge–charge curves of the Li-O2 cells with the HSC deposited onto CP cathode at different cycles. (d) Variation of voltage on the terminal of discharge of the Li-O2 cells with the HSC deposited onto CP cathode. (e) Discharge–charge curves of the Li-O2 cells with the conventional SP cathode at different cycles. (f) Variation of voltage on the terminal of discharge of the Li-O2 cells with the SP cathode.