Imaging, understanding and controlling of Li dendrite growth.

• Imaging, understanding and controlling of Li dendrite growth. Li nanogranular growth was achieved by coating the electrodes in a liquid cell with a cationic (PDDA) polymer film. Liquid cell TEM is remarkable in revealing the mechanisms of Li dendrite suppression. In situ EDS chemical analysis of solid electrolyte interphase (SEI) on an individual nanograin was achieved for the first time. EES 13, 1832 (2020).