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. 2023 Apr 29;6:84. doi: 10.1038/s42004-023-00875-9

Fig. 5. XPS spectra of the [BMIM][CO2CH3] electrolyte and working electrode after test.

Fig. 5

a Ag3d high resolution XPS spectra for the electrode before (upper panel) and after (lower panel) the electrochemical test. b N1s high resolution XPS spectra of the pure [BMIM][CO2CH3] IL (upper panel) and the tested electrode (lower panel).