In situ tem investigation on ultrafast reversible lithiation and delithiation cycling of Sn@C yolk-shell nanoparticles as anodes for lithium ion batteries

TOC Graphic: (left two) a partially filled Sn@C yolk-shell NP before and after lithiation, the relationship of volume changes of the Sn core as the applied rectangle voltages are shown in the inset images; (right) the phase changes of the Sn core before (or after delithiation) and after lithiation that is verified by the selected area electron diffraction patterns.357