Figure 2: The first two cycles of capacity-controlled voltage profiles.

(a–c) of Li–O2 cells using Ag3-, Ag9- and Ag15-based cathode materials; and (d) their first discharge profiles with a cut-off voltage of 2.5 V.
(a–c) of Li–O2 cells using Ag3-, Ag9- and Ag15-based cathode materials; and (d) their first discharge profiles with a cut-off voltage of 2.5 V.