Understanding oxygen reactions in aprotic Li-O2batteries |
FESEM images at a magnification of 20000 of (a) the pristine cathode and after full discharge at (b) 5 mA/cm2, (c) 10 mA/cm2, (d) 25 mA/cm2, (e) 50 mA/cm2, and (f) 100 mA/cm2, with the corresponding discharge curves shown as insets. Scale bar = 400 nm.[ |