Research / 2019 / Article / Fig 3

Research Article

Nanowrinkled Carbon Aerogels Embedded with FeN Sites as Effective Oxygen Electrodes for Rechargeable Zinc-Air Battery

Figure 3

Atomic model and DOS of metal sites; Gibbs free energy diagrams of ORR. (a, c) Side/top view and simulated STM image (at a bias of -1.0 V) of normal FeN4 doped graphene sheets. (b, d) Side/top view and simulated STM image (at a bias of -1.0 V) of Stone-Wales FeN4- (FeN4 SW-) doped graphene sheets. (e) Density of state (DOS) of normal FeN4 and FeN4 SW-doped graphene sheets. (f) DOS of FeN4 SW and Fe 3d. (g) Free energy diagrams of ORR processes on normal FeN4, normal FeN3, FeN4 SW, and FeN3 SW at the applied potential of +0.9 V vs. RHE.