Fig. 5: Theoretical calculation of the ORR.
From: Precisely designing asymmetrical selenium-based dual-atom sites for efficient oxygen reduction
a‒c Atomic configurations of SeFe‒C2N, Fe‒C2N and Se‒C2N, respectively. Brown, grey, purple and green atoms represent carbon, nitrogen, iron and selenium, respectively. d Gibbs free energy diagram of the ORR on SeFe‒C2N, Fe‒C2N, and Se‒C2N. e Gibbs free energies of *OH absorbed on SeFe‒C2N, Fe‒C2N, and Se‒C2N.
