Figure 2

(a) Overview SEM image of MnO@CNT (BSE mode); (b) SEM image of an individual Mn3O4@CNT (SE mode); (c) corresponding BSE mode image of the individual Mn3O4@CNT; (d,e) TEM images of different individual Mn3O4@CNT.

(a) Overview SEM image of MnO@CNT (BSE mode); (b) SEM image of an individual Mn3O4@CNT (SE mode); (c) corresponding BSE mode image of the individual Mn3O4@CNT; (d,e) TEM images of different individual Mn3O4@CNT.