Extended Data Fig. 3: Comparison of the type II SEI oxygen K-edge with reference spectra and an example of a bandpass-filtered spectrum. | Nature

Extended Data Fig. 3: Comparison of the type II SEI oxygen K-edge with reference spectra and an example of a bandpass-filtered spectrum.

From: Cryo-STEM mapping of solid–liquid interfaces and dendrites in lithium-metal batteries

Extended Data Fig. 3

a, The O K-edge of the type II dendrite appears to be consistent with a combination of Li2O and LiOH · H2O. Spectra are offset vertically for clarity. b, A 0.6-eV bandpass (BP) filter was applied to the O K-edge spectra acquired on the F20 to remove high-frequency noise. This preserved the main features of the edge while eliminating those below the energy resolution of the instrument.

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