Figure 5
From: Amorphous iron phosphate: potential host for various charge carrier ions
Ex situ TEM studies. The (a) bright- and (b) dark-field TEM images of the cathode sample extracted after one complete Na-insertion cycle. The (c) bright- and (d) dark-field TEM images of the cathode sample extracted after one complete Li-insertion cycle. The corresponding SAED patterns of the recovered cathode samples are shown in the insets of (b) and (d).
