Fig. 3: X-ray absorption spectroscopy characterization of CuNa-CF and other samples. | Nature Communications

Fig. 3: X-ray absorption spectroscopy characterization of CuNa-CF and other samples.

From: Main-group element-boosted oxygen electrocatalysis of Cu-N-C sites for zinc-air battery with cycling over 5000 h

Fig. 3

a Cu K-edge X-ray absorption near-edge structure spectra. b Fourier transformed extended X-ray absorption fine structure (EXAFS) spectra in R space. c Wavelet transformed EXAFS spectra for Cu foil, CuPc-CF, CuNa-CF, CuO, CuPc, and CSCC. d, e Fourier transformed EXAFS fitting curves for CuPc-CF and CuNa-CF, respectively. Insets in d and e show schematic models of the CuPc-CF catalyst and CuNa-CF catalyst, respectively (Cu atom is green, Na atom is purple, O atoms are pink, N atoms are blue, C atoms in the layer where the Cu site is located are dark gray, and C atoms in the layer below Cu site are light gray).

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