Fig. 4

STEM images of the composite with Si, Li2O, and CuO particles. (a) Cross-sectional STEM image of the composite. (b), (c) Enlarged STEM images of the area encircled in red in (a). Black dots in (c) indicate Cu3Si alloy grains in the composite.
STEM images of the composite with Si, Li2O, and CuO particles. (a) Cross-sectional STEM image of the composite. (b), (c) Enlarged STEM images of the area encircled in red in (a). Black dots in (c) indicate Cu3Si alloy grains in the composite.