Fig. 3: Characterization of Cu-SACs. | Nature Communications

Fig. 3: Characterization of Cu-SACs.

From: Substrate strain tunes operando geometric distortion and oxygen reduction activity of CuN2C2 single-atom sites

Fig. 3

a–c TEM images, corresponding SAED patterns (insets in a–c) and (d–f) spherical aberration corrected HAADF-STEM images of Cu/G (a, d), Cu/CNT-8 (b, e) and Cu/CNT-4 (c, f), (g) Cu 2p and Cu LMM Auger XPS spectra of the Cu-SACs, (h) Cu K-edge XANES spectra of the Cu-SACs with Cu, Cu2O, and CuO as references, (i) R-space Cu K-edge EXAFS of the Cu-SACs.

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