Fig. 2: Characterisation of the photo-SEI. | Nature Communications

Fig. 2: Characterisation of the photo-SEI.

From: Photochemically driven solid electrolyte interphase for extremely fast-charging lithium-ion batteries

Fig. 2

a Cs-TEM image of the photo-graphite with the photochemically driven SEI layer. b Low-magnification EDS elemental map of the photo-SEI inside the pores of the photo-graphite electrode. c High-magnification Cs-TEM image of the photo-SEI image and the corresponding EDS map (inset). d XPS profiles of the photo-SEI in the C 1s (left), O 1s (middle) and F 1s (right) bands. e Relative atomic contents of echem-SEI and photo-SEI. f Relative amounts of SEI components in echem-SEI and photo-SEI. The photo-SEI in this figure originates from 1 M LiTFSI in EC/DEC (50/50 = v/v).

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