Figure 6

SEM images of the pristine and discharge air cathodes (at 0.24 mAh cm−2 and cut off potential at 0.9 V) at two magnifications corresponding to H 23 (a–c); MGL 190 (d–f); Toray 090 (g–i) and BC 39 (k–m).

SEM images of the pristine and discharge air cathodes (at 0.24 mAh cm−2 and cut off potential at 0.9 V) at two magnifications corresponding to H 23 (a–c); MGL 190 (d–f); Toray 090 (g–i) and BC 39 (k–m).