Research / 2019 / Article / Fig 1

Research Article

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

Figure 1

Synthesis and morphological characterization of the NCAC-Zn/Fe carbon aerogel. (a) Schematic representation of the synthesis of the NCAC-Zn/Fe carbon aerogel. (b) SEM image of the freeze-dried CSSi-Zn/FePM hydrogel. Inset is a digital photo of the sample. (c) Bright-field STEM image of the NCAC-Zn/Fe aerogel. Red circles indicate single Fe atoms. Inset is a digital photo of the sample. (d) Dark-field STEM image of the NCAC-Zn/Fe aerogel. Red circles indicate single Fe atoms. Inset is a TEM image of the NCAC-Zn/Fe aerogel, and the scale bar is 30 nm. (e) Elemental maps of NCAC-Zn/Fe aerogels. The scale bar is 10 nm. AFM images of NCAC-Zn/Fe aerogels: (f) adhesion force image and (g) current flow image.