fig4
From: Atomistic engineering of Ag/Pt nanoclusters for remarkably boosted mass electrocatalytic activity
![Atomistic engineering of Ag/Pt nanoclusters for remarkably boosted mass electrocatalytic activity](https://image.oaes.cc/72939d40-bf0d-4c0b-83b6-605aa59d8273/4681.fig.4.jpg)
Figure 4. DFT calculation results. (A) Structure diagram of Pt8Ag4 clusters on CNTs. (Dark blue, light blue, grey, red and white atoms represent Pt, Ag, C, O and H, respectively.) (B) Free energy profiles for hydrogen adsorption at different active sites of Pt8Ag4 clusters/CNTs and Pt/CNTs. (C) ORR activities of Pt8Ag4 clusters/CNTs and Pt/CNTs predicted by the calculated oxygen adsorption energy (△EO*) based on the theoretical volcano relationship. DFT: Density functional theory; CNT: carbon nanotubes; ORR: oxygen reduction reaction.