Figure 3 (IMAGE)

Advanced Institute for Materials Research (AIMR), Tohoku University

Figure 3

Caption

Theoretical analyses of the OER active phase and activity of Er-doped Co3O4 surfaces. (a) Calculated 1D surface Pourbaix diagram. (b) Calculated 2D surface Pourbaix diagram. (c) Microkinetic OER activity volcano model at 10 mA cm−2 as a function of GO-GHO. The theoretical predictions of FeNi-Ni, FeNi-Fe, and CoO were obtained from the existing literature Inset shows the identified surface coverage of Er−Co3O4 (311) under OER operating conditions. The Er, Co, and O are indicated as green, purple, and red, respectively. 

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Hao Li et al.

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