Fig. 6: Practical application prospect of unsaturated Fe–Nx positive electrodes in Na||S batteries. | Nature Communications

Fig. 6: Practical application prospect of unsaturated Fe–Nx positive electrodes in Na||S batteries.

From: Unsaturation degree of Fe single atom site manipulates polysulfide behavior in sodium-sulfur batteries

Fig. 6

a and b SAED patterns (a), SEM images, and corresponding EDS mapping (b) of post-cycled Fe–N1/S, Fe–N2/S, Fe–N4/S, and NC/S positive electrodes. c and d Rate performance (c) and corresponding GCD profiles (d) of Na||S pouch cell employing Fe–N1/S positive electrode. Inset: Digital image of the assembled Na||S pouch cell configuration. e Sulfur utilization comparison between Fe–N1/S positive electrode-based Na||S pouch cell and the state-of-the-art Na||S coin cells. Source data are provided as a Source Data file.

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