Figure 6. (a–c) are post-mortem cross-sectional SEM images of Si-CNT anodes which were not prelithiated (500× magnification). The anodes have been (a) equilibrated for 50 h, then subsequently (b) charged to 4.3 V and (c) discharged to 2.5 V. (d–f) Corresponding images for Si-CNT anodes that have been prelithiated with SLMP.