Fig. 2 | Communications Chemistry

Fig. 2

From: In situ observation of solid electrolyte interphase evolution in a lithium metal battery

Fig. 2

Cycling curve and SEM images obtained during cycling. a Cycling curve showing the times at which the SEM images bi were obtained (red circles), corresponding to Supplementary Movie 1 (straight lines indicate the times at which cycling was stopped). SEM image b at the beginning of cycling (at 3.25 V); c after 13 h of cycling, showing a change in the SPE close to the anode edge (at 3.43 V); d after 14.5 h of cycling, showing dendrites on the anode edge (at 3.49 V); e after 3 days of cycling, showing further growth of dendrites and more pronounced grain boundaries (at 3.42 V); f after 5 days of cycling, showing more activity on the grain boundaries (yellow dashed lines indicate the thickness of the Li consumed on the anode edge) (at 2.93 V); g after 7 days of cycling, showing isolated regions on the anode and close to the edge (isles) and the beginning of the formation of a new anode edge (at 3.49 V); h after 8 days, showing Li depletion in the vicinity of the isles and formation of a new anode edge (at 3.14 V); and i after 14 days of cycling, showing dendrites on the newly formed edge, high activity at the grain boundaries and isles and the coverage of dendrites formed at the beginning by SPE (at 3.55 V). Scale bars represent 100 µm

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