fig3
![High hydrogen evolution activities of dual-metal atoms incorporated N-doped graphenes achieved by coordination regulation](https://image.oaes.cc/647b99ba-c13d-4529-9b84-58a369a9f683/jmi3034.fig.3.jpg)
Figure 3. Optimized structures (two views) and formation energies (Ef) of (A-C) MMN5-gra (M = Fe, Co, Ni) and (D-F) M1M2N5-gra. The first column gives the different active sites considered for each kind of catalyst.
Figure 3. Optimized structures (two views) and formation energies (Ef) of (A-C) MMN5-gra (M = Fe, Co, Ni) and (D-F) M1M2N5-gra. The first column gives the different active sites considered for each kind of catalyst.
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