Fig. 2: The EXAFS, XANES, XPS and EELS characterization for comparing the local structure, valence state and spin state of Co, Ni, Cu and O in RS-0, RS-20 and Li-RS-16. | Nature Communications

Fig. 2: The EXAFS, XANES, XPS and EELS characterization for comparing the local structure, valence state and spin state of Co, Ni, Cu and O in RS-0, RS-20 and Li-RS-16.

From: Spin-related Cu-Co pair to increase electrochemical ammonia generation on high-entropy oxides

Fig. 2

EXAFS of (a) Co, (b) Ni, and (c) Cu. d XANES of Co with the reference of commercial CoO and Co3O4. e XPS of Co 2p3/2 results. f O K-edge EELS. g XPS of O 1 s results. The peak positions are marked by the vertical dash lines and the corresponding labels in panels. The square symbols and solid lines in (e) and (g) represent the raw data and fitted curves, respectively.

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