Fig. 2: Interaction between NaPSs and Fe3N-NMCN. | Nature Communications

Fig. 2: Interaction between NaPSs and Fe3N-NMCN.

From: A Fe3N/carbon composite electrocatalyst for effective polysulfides regulation in room-temperature Na-S batteries

Fig. 2

a Optical images of the blank Na2S6 solution and solutions with Fe3N-NMCN, BC-NH3, BC-Ar, GO, and Super P after 10 min and 24 h. b UV–Vis spectra of the blank solution and solutions with Fe3N-NMCN, BC-NH3, and Super P after 24 h. c, d Na 1s (c) and S 2p (d) XPS spectra after infiltrated with Na2S6. e Comparison of Fe 2p XPS spectra before and after Na2S6 adsorption. f, g CV curves (f) and EIS spectra (g) of symmetric cells with Fe3N-NMCN, BC-NH3, and Super P as cathodes. h, i Comparison of voltage-capacity curves at 167.5 mA g−1 (h) and CV curves at 0.2 mV s−1 (i) between S@Fe3N-NMCN and S@BC-NH3.

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