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(a) Schematic drawing showing the volume expansion of the Si anode on Si NW during lithium insertion and extraction; (b) Captured video frames of the in-situ TEM imaging during the lithium insertion and extraction processes in the SCP anode at different time; first row: 1st lithium insertion; second row: 1st lithium extraction; third row: 2nd lithium insertion (c) STEM image and elemental (Si, Li, Si + Li composite) maps obtained using EELS Si L edge and Li K edge during lithiation.
