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Figure 5: (a) Schematic illustration of the lithiation/delithiation processes for the Sn–Ni/G dual framework. (b, c) TEM images, (d) EDX spectrum, and (e) STEM-EDX elemental mappings of the Sn–Ni/G dual framework in a fully delithiated state (2 V vs. Li+/Li) after 200 cycles.