Fig. 2: Synthesis and characterization of WSA-W2C@NC and WSA-W2C@NC/S. | Nature Communications

Fig. 2: Synthesis and characterization of WSA-W2C@NC and WSA-W2C@NC/S.

From: Optimizing potassium polysulfides for high performance potassium-sulfur batteries

Fig. 2

a Schematic synthesis process of WSA-W2C@NC and WSA-W2C@NC/S. b HAADF-STEM image of WSA-W2C@NC. c–d XANES (c) and EXAFS (d) spectra of W L3-edge for WSA-W2C@NC and W foil, WO2, WO3 references. e HRTEM images of WSA-W2C@NC and WSA-W2C@NC/S. f High-resolution W 4 f XPS spectra for WSA-W2C@NC and WSA-W2C@NC/S. g HAADF-STEM image and corresponding EDS mapping of WSA-W2C@NC/S. Source data are provided as a Source Data file.

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