Fig. 3: Coordination environment and electron transfer analysis. | Nature Communications

Fig. 3: Coordination environment and electron transfer analysis.

From: Lanthanum-assisted lattice anchoring of iridium in Co3O4 for efficient oxygen evolution reaction in low-iridium water electrolysis

Fig. 3

Fourier transforms of the EXAFS spectra at the Co K-edge (a) of LaIr-Co3O4, Ir-Co3O4 and Co3O4 and Ir L3-edge (b) of LaIr-Co3O4, Ir-Co3O4 and Co3O4. EXAFS fitting coordination number at the Co K-edge (c) of LaIr-Co3O4, Ir-Co3O4 and Co3O4. EXAFS fitting coordination number at the Ir L3-edge (d) of LaIr-Co3O4, Ir-Co3O4 and Co3O4.WT-EXAFS of LaIr-Co3O4 (e) and Ir-Co3O4 (f) at the Ir L3-edge. High-resolution XPS spectra of Co 2p (g) and Ir 4f (h) for LaIr-Co3O4 and Ir-Co3O4. Normalized XANES spectra of Co K-edge (i) and Ir L3-edge (j) for LaIr-Co3O4 and Ir-Co3O4.

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