Fig. 3: Degradation mechanisms. | Nature Communications

Fig. 3: Degradation mechanisms.

From: Extreme fast charging of commercial Li-ion batteries via combined thermal switching and self-heating approaches

Fig. 3

Representative a–c optical images, d–f SEM images, and g–i X-ray tomography images of uncycled and aged negative electrodes for cooling and switch, respectively (see text for discussion). From the tomography images, the reduction of pore size on the negative electrode surface (e.g., fewer large pores with volume >1000 μm3) indicates pore clogging.

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