Fig. 3: Ex/in-situ characterization of as-prepared NiFe-Boride catalyst. | Nature Communications

Fig. 3: Ex/in-situ characterization of as-prepared NiFe-Boride catalyst.

From: Boride-derived oxygen-evolution catalysts

Fig. 3: Ex/in-situ characterization of as-prepared NiFe-Boride catalyst.

a In-situ SRXRD patterns of the catalyst during the OER test in 1 M KOH electrolyte; The in-situ Ni and Fe K-edge XANES (b) and (c) and EXAFS (d) and (e) data of NiFe-Boride during the LSV process in 1 M KOH aqueous electrolyte. The in-situ applied voltages before and during the OER are 1.2 and 1.4 V vs. RHE, respectively. f Ni 2p and (g) Fe 2p XPS spectra for fresh and post-OER samples.

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