fig12
From: Recent advances in alloying anode materials for sodium-ion batteries: material design and prospects
Figure 12. (A) (a) A schematic illustration of in-situ TEM setup. (b) STEM image series captured in real-time showing Pred volume expansion during sodiation (scale bar: 200 nm). (c) Simulated SOS according to the Pred morphological evolution of the region labeled with a blue rectangle in image (b). (d) EDS maps of phosphorus (green), sodium (yellow), and carbon (red) elements of the region labeled with a red rectangle in image (b) (scale bar: 200 nm). (e) Length changes of four Pred segments marked in image (b) as a function of time during the sodiation process. (B) Extended cycling of the Pred@CNF anodes with variable current densities. Reproduced with permission from[157]. Copyright © 2020 Springer Nature Limited.
