Figure 3 (IMAGE)

Advanced Institute for Materials Research (AIMR), Tohoku University

Figure 3

Caption

Theoretical analyses of OER activity on W-CoOOH. (a) Projected density of states of CoOOH, W-CoOOH-1 and W-CoOOH-2 (EF: Fermi level; ɛCo-3d: Co 3d band center). (b) The white line intensities in the Co K-edge XANES spectra. (c) Illustration of the Co-O octahedron distortion in W-CoOOH and CoOOH. (d) Schematic band diagrams of CoOOH and W-CoOOH. (e) Stability of O* and HO* on W-CoOOH-2. (f) 2D surface Pourbaix diagram of W-CoOOH-2. (g) Optimized adsorption structures for HO* and O* (top view) on W-CoOOH-2 pre-covered by hydroxyls. (h) Microkinetic OER volcano at the current density of 10 mA cm-2, with the points indicating the OER potentials. 

Credit

©Yong Wang et al.

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